{
  "response": {
    "Key": "DEN-SAN",
    "orig": {
      "code": "DEN",
      "type": "airport",
      "city": "Denver",
      "fullCity": "Denver, Colorado",
      "airport": "Denver Intl Airport"
    },
    "dest": {
      "code": "SAN",
      "type": "airport",
      "city": "San Diego",
      "fullCity": "San Diego, California",
      "airport": "San Diego Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Denver to San Diego?",
        "answer": "The flight from Denver to San Diego is about 850 miles and typically takes 2 hours and 25 minutes nonstop. The return flight also takes about 2 hours and 25 minutes, so there is no meaningful difference in duration between the two directions.",
        "methodology": "Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in San Diego?",
        "answer": "San Diego International Airport (SAN) offers several ground transportation options to the city center: ride-hailing apps and taxis provide quick, safe, and reliable service, while the Metropolitan Transit System (MTS) operates bus Route 992 and the free San Diego Flyer shuttle connecting to the Trolley's Blue and Green lines. Rental cars are available from a dedicated Rental Car Center with a 24-hour shuttle, and the COASTER and Amtrak trains serve downtown via the Santa Fe Depot, from which Route 992 reaches the airport. Ride-hailing and taxis are the fastest and most commonly used options for most travelers, while public transit via Route 992 or the San Diego Flyer offers an economical alternative. The San Diego Flyer also runs daily from 4:50 a.m. to 12:20 a.m. to the Old Town Transit Center.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.san.org/before-you-go-travel-tips/public-transportation/",
            "title": "Public Transportation - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-e0be6d1/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-07-17T19:30:17Z"
          },
          {
            "url": "https://www.san.org",
            "title": "San Diego International Airport | SAN.org",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-e0be6d1/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-09-17T03:47:04Z"
          },
          {
            "url": "https://www.san.org/before-you-go-travel-tips/courtesy-shuttles/",
            "title": "Airport Courtesy Shuttles - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-e0be6d1/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-07-09T15:02:21Z"
          },
          {
            "url": "https://www.san.org?Command=Core_Download&EntryId=15731&PortalId=0&TabId=225&language=en-US",
            "title": "San Diego International Airport | SAN.org",
            "favicon": "https://www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-08-14T23:17:40Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Transportation_in_San_Diego",
            "title": "Transportation in San Diego",
            "time_published": "2026-02-27T03:32:46Z"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Denver to San Diego?",
        "answer": "Average fares from Denver to San Diego bottom out around $174 in late January, making that the cheapest stretch to fly. Overall, the cheapest months are February ($176 average), January ($177), and September ($189), while the most expensive period is late June when average fares peak around $244. July and June are the priciest months overall, with averages of $240 and $237 respectively.",
        "methodology": "Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.",
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Denver to San Diego?",
        "answer": "For Denver to San Diego, the best fares typically come when booking 6 to 9 weeks before departure, with the absolute lowest around 55 days out at about $134. Booking too early (170 days or more) can push prices up to $241, so aim for roughly two months ahead for the best deal.",
        "methodology": "Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.",
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Denver to San Diego?",
        "answer": "Yes, overnight red-eye flights are available from Denver to San Diego. Southwest operates up to 25 red-eyes per week departing between 9:35 PM and 10:00 PM, and Frontier flies about 14 per week departing between 9:36 PM and 10:43 PM. These flights land in San Diego the same night, typically just before midnight.",
        "methodology": "Red-eye flights are identified from scheduled local departure and arrival times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes — flagging services that depart late at night and arrive the following morning; for connecting itineraries the red-eye is based on the timing of the overnight long-haul leg.",
        "toolsUsed": [
          "redeye_flights"
        ]
      },
      "q7": {
        "question": "Which airlines usually operate this route from Denver to San Diego?",
        "answer": "Southwest, United, Frontier, and Alaska Airlines all fly nonstop from Denver to San Diego. Southwest operates the most flights, with 194 weekly departures, followed by United at 69, Frontier at 31, and Alaska at 21 (including one daily flight operated by SkyWest). Typical median fares are around $342 on Southwest, $352 on United, and $365 on Alaska, though no median fare is listed for Frontier.",
        "methodology": "Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Denver and San Diego?",
        "answer": "Common layover cities include Phoenix, Las Vegas, Salt Lake City, and Los Angeles, offering efficient transfers and frequent flights to San Diego."
      },
      "q9": {
        "question": "How reliable are on‑time arrivals on this route from Denver to San Diego?",
        "answer": "On the Denver to San Diego route, Alaska Airlines has the best on-time arrival performance at 81% with a 1% cancellation rate. United follows at 78% on time and 0% cancellations, Frontier at 75% on time with 0% cancellations, and Southwest at 68% on time with no cancellations.",
        "methodology": "On-time arrival and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; a flight counts as on time when it arrives within 15 minutes of schedule. Carriers are ranked by arrival on-time rate on this route, and the carrier list itself comes from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI).",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q10": {
        "question": "Which months have the best weather for traveling to San Diego?",
        "answer": "March through May and September through November offer sunny, mild weather and fewer tourists than summer."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Denver to San Diego?",
        "answer": "For a domestic flight from Denver to San Diego, you need a Real ID or other acceptable ID like a passport. Bring a payment method for baggage and any required vaccination or health documents."
      },
      "q12": {
        "question": "Which airport should I use in San Diego?",
        "answer": "San Diego International Airport is the only commercial airport serving the city. It is located just three miles from downtown, making it very convenient for reaching the city centre and attractions like the Gaslamp Quarter and Balboa Park."
      },
      "q13": {
        "question": "How do I get to Denver Intl Airport from the city center?",
        "answer": "From downtown Denver, the RTD A Line train is the most popular and affordable option, running every 15 minutes from Union Station to the airport in about 37 minutes. Ride-share services like Uber and Lyft, as well as taxis, offer door-to-door convenience and take roughly 25–35 minutes, though they cost significantly more than the train. Shared vans provide a mid-range option for hotel drop-offs, and driving yourself is possible with on-site parking, but the train remains the fastest and most cost-effective choice for most travelers.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/",
            "title": "Getting To and From | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-05-15T18:36:33Z"
          },
          {
            "url": "https://flydenver.com/parking-and-transportation/to-and-from/public-bus-or-train-rtd",
            "title": "Public Bus or Train | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-05-15T18:47:06Z"
          },
          {
            "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/airport-transit-center/",
            "title": "Airport Transit Center | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-05-15T18:45:07Z"
          },
          {
            "url": "https://faa.gov/air_traffic/publications/domesticnotices/dom25010_af.html",
            "title": "DENVER INTERNATIONAL AIRPORT (KDEN) standard taxi routes",
            "favicon": "https://faa.gov/air_traffic/publications/domesticnotices/assets/images/favicon.ico"
          },
          {
            "url": "https://www.fly.faa.gov/fly/flyfaa/flyfaaindex?ARPT=DEN&p=1",
            "title": "Denver International Airport"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at San Diego airport?",
        "answer": "San Diego International Airport has no directly connected on-site hotel, so there is no hotel you can reach without leaving the terminal. Nearby hotels like the Sheraton San Diego Resort, TownePlace Suites San Diego Airport, Hampton Inn & Suites San Diego Airport Liberty Station, and Hilton San Diego Airport are located within about a mile of the airport. Sleeping inside the terminal is possible in a few quiet landside spots, but there are no dedicated rest zones or cots, so sleeping options at the airport are limited.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://sleepinginairports.net/guides/san-diego-airport-guide.htm",
            "title": "San Diego Airport Guide (SAN) - Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/nitropack_static/oBWrHkPujHTPIaVWqdDSDhClXUyrYhhb/assets/images/optimized/rev-b853180/www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png",
            "time_published": "2018-08-06T08:49:44Z"
          },
          {
            "url": "https://www.sleepinginairports.net/usa/sandiego.htm",
            "title": "San Diego Airport Guide (SAN) - Sleeping in Airports",
            "time_published": "2026-05-29T21:56:08Z"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at San Diego Intl Airport?",
        "answer": "San Diego International Airport offers free, fast Wi-Fi throughout Terminal 1, Terminal 2, and the Rental Car Center, with 2-hour sessions that can be renewed by reconnecting to #Official SAN Wi-fi. Currency exchange offices and prayer rooms or chapels are not part of the airport's listed amenities.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.san.org/services-and-facilities/",
            "title": "Services and Facilities - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-81a117e/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-07-08T18:38:01Z"
          },
          {
            "url": "https://www.san.org/media-resources/new-terminal-1-opens-at-san-diego-international-airport/",
            "title": "New Terminal 1 Opens at San Diego International Airport - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-1838794/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2025-09-24T18:59:59Z"
          },
          {
            "url": "https://www.san.org",
            "title": "San Diego International Airport | SAN.org",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-e0be6d1/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-09-17T03:47:04Z"
          },
          {
            "url": "https://www.san.org/airlines/",
            "title": "Airlines & Terminal Locations | San Diego International Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-81a117e/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2025-10-10T18:05:46Z"
          },
          {
            "url": "https://www.san.org/contact/",
            "title": "Contact - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-81a117e/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2025-08-27T16:10:48Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Denver and San Diego airports?",
        "answer": "Denver International Airport provides electric carts to transport elderly or disabled passengers to airline gates, accessible parking in all airport-owned facilities, and a Hidden Disabilities Sunflower Lanyard Program for travelers with non-visible disabilities. San Diego International Airport offers the SAN Assist program with personalized travel guides and familiarization tours for passengers with non-visible disabilities, plus wheelchair services arranged through your airline and TSA Cares support. To arrange mobility assistance on this route, contact your airline at least 48 hours before your flight, and for SAN Assist travel guides request them at least three business days in advance.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flydenver.com/at-the-airport/services-and-amenities/accessibility-services",
            "title": "Accessibility and Mobility | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-10T20:24:04Z"
          },
          {
            "url": "https://www.flydenver.com/event/61719/",
            "title": "Accessibility Resource Fair | Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-07-22T17:07:58Z"
          },
          {
            "url": "https://flydenver.com/about-den/facilities",
            "title": "Airport Facilities and Grounds | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-03T22:42:42Z"
          },
          {
            "url": "https://airporttech.tc.faa.gov/Products/Databases/Denver-Instrumentation/Browse-Database/Weather",
            "title": "AirportTech > Products > Databases  > Denver Instrumentation > Browse Database > Weather",
            "favicon": "https://airporttech.tc.faa.gov/Portals/0/favicon-FAA.ico?ver=L21jzf-llJYYjFtxLcsyqg%3d%3d"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Denver_International_Airport",
            "title": "Denver International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-09-11T12:43:01Z"
          },
          {
            "url": "https://www.san.org/media-resources/san-diego-international-airport-launches-san-assist-program-to-support-travelers-with-non-visible-disabilities/",
            "title": "San Diego International Airport Launches SAN Assist Program to Support Travelers with Non-Visible Disabilities - SAN Airport",
            "time_published": "2026-02-25T00:38:38Z"
          },
          {
            "url": "https://www.san.org/accessibility/",
            "title": "Accessibility - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-401cf88/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-01-09T17:53:37Z"
          },
          {
            "url": "https://www.san.org",
            "title": "San Diego International Airport | SAN.org",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-e0be6d1/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2026-09-17T03:47:04Z"
          },
          {
            "url": "https://www.san.org/contact/",
            "title": "Contact - SAN Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-81a117e/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2025-08-27T16:10:48Z"
          },
          {
            "url": "https://www.san.org/airlines/",
            "title": "Airlines & Terminal Locations | San Diego International Airport",
            "favicon": "https://cdn-iledcni.nitrocdn.com/MENtWJRLkriAtmpQmYbUxvjofqTlAYUZ/assets/images/optimized/rev-81a117e/www.san.org/wp-content/uploads/2025/09/faviconArtboard-1.png",
            "time_published": "2025-10-10T18:05:46Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Denver to San Diego?",
        "answer": "Southwest Airlines operates the Denver to San Diego route most frequently, using the Boeing 737-700 and Boeing 737 family. Alaska Airlines flies the Boeing 737-800, United Airlines uses the Boeing 737 family and Airbus A321neo, Frontier Airlines operates the Airbus A320 family, and Alaska Airlines also has Embraer E175 regional service operated by SkyWest.",
        "methodology": "Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.",
        "toolsUsed": [
          "flight_schedule"
        ]
      },
      "q18": {
        "question": "Which airline alliances serve flights from Denver to San Diego?",
        "answer": "United (Star Alliance) and Alaska Airlines (Oneworld) are the alliance carriers flying nonstop from Denver to San Diego. Southwest and Frontier also operate the route but belong to no alliance. No SkyTeam carrier flies it nonstop, though SkyTeam members may serve it via connections.",
        "methodology": "Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.",
        "toolsUsed": [
          "route_airlines"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Denver?",
        "answer": "Denver International Airport offers several lounge options when departing, including an American Airlines Admirals Club near Gate C-32, an American Express Centurion Lounge near Gate C-46, a Capital One Lounge near Gate A-34, a Delta Sky Club at the north end of Concourse A, and multiple United Club locations at Gates A-25, B-44, B-32, and B-60. There is also a USO Denver lounge on Level 4 above the Concourse A mezzanine, plus a free Rest and Recharge area with recliners on the Concourse A mezzanine.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://flydenver.com/at-the-airport/lounge-areas",
            "title": "Denver Airport Lounges | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2026-08-03T22:37:03Z"
          },
          {
            "url": "https://www.flydenver.com",
            "title": "Denver International Airport | DEN",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-09-08T14:54:34Z"
          },
          {
            "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/DEN",
            "title": "American Express Lounges at Denver International Airport | Amex US",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          },
          {
            "url": "https://my.prioritypass.com/en-GB/lounges/united-states-of-america/denver-international",
            "title": "Denver International Airport DEN Lounges - DEN Airport Guide and lounges. | Priority Pass",
            "favicon": "https://my.prioritypass.com/icon.png?a4ff481221414a5c"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Denver to San Diego?",
        "answer": "Baggage allowance varies by airline and fare. Basic economy on this domestic route typically does not include a free checked bag, though a carry-on is usually permitted. Standard economy fares may still charge for checked bags, so check your specific airline's policy."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Denver to San Diego?",
        "answer": "On Denver to San Diego flights, Economy is standard with extra‑legroom options, Premium Economy is uncommon, and Business class typically has recliner seats rather than flat‑beds."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies depend on the airline and fare type; flexible and premium tickets generally allow same‑day changes or standby, while Basic Economy typically does not."
      }
    }
  }
}