{
  "response": {
    "Key": "DEN-SJU",
    "orig": {
      "code": "DEN",
      "type": "airport",
      "city": "Denver",
      "fullCity": "Denver, Colorado",
      "airport": "Denver Intl Airport"
    },
    "dest": {
      "code": "SJU",
      "type": "airport",
      "city": "San Juan",
      "fullCity": "San Juan, Puerto Rico",
      "airport": "Luis Munoz Marin Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Denver to San Juan?",
        "answer": "A nonstop flight from Denver (DEN) to San Juan (SJU) typically takes around 5 hours 30 minutes to 5 hours 45 minutes. With one stop, depending on the layover city, total travel time often ranges from 7 to 10 hours. The return flight from San Juan to Denver may be slightly shorter due to tailwinds, often around 5 hours 15 minutes to 5 hours 30 minutes nonstop."
      },
      "q1": {
        "question": "Are there any direct flights from Denver to San Juan?",
        "answer": "United Airlines operates the only nonstop flight from Denver to San Juan, with daily service departing at 9:43 AM. That single daily flight is the sole nonstop option on this route.",
        "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. Carrier service and weekly frequencies are summarized from our flight-schedule database, which draws on published airline timetables, U.S. government schedule data, and observed operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). Where available, on-time and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, and typical fares from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.",
        "toolsUsed": [
          "route_airlines",
          "flight_schedule"
        ]
      },
      "q3": {
        "question": "What are the ground transportation options in San Juan?",
        "answer": "From Luis Muñoz Marín International Airport (SJU) you can reach San Juan by taxi, ride‑share (Uber, Lyft), rental car, or public bus. Taxis and ride‑shares are the fastest and most‑used options, with a 10–20 minute drive to Old San Juan or Condado. The AMA bus (route E40) is the only mass‑transit link and costs just $0.75, but it runs less frequently and takes longer. Rental cars are widely available if you plan to explore beyond the city.",
        "toolsUsed": [],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/Luis_Mu%C3%B1oz_Mar%C3%ADn_International_Airport",
            "title": "Luis Muñoz Marín International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-07-21T20:24:02Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/List%20of%20the%20busiest%20airports%20in%20Puerto%20Rico",
            "title": "List of the busiest airports in Puerto Rico",
            "time_published": "2025-09-20T07:52:17Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Luis_Mu%C3%B1oz_Marin_International_Airport",
            "title": "Luis Muñoz Marín International Airport - Wikipedia",
            "time_published": "2002-09-10T02:45:15Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/List_of_the_busiest_airports_in_Puerto_Rico",
            "title": "List of the busiest airports in Puerto Rico",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2025-09-20T07:52:17Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Puerto%20Rico%20Metropolitan%20Bus%20Authority",
            "title": "Puerto Rico Metropolitan Bus Authority",
            "time_published": "2026-01-08T02:20:19Z"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Denver to San Juan?",
        "answer": "The cheapest months to fly from Denver to San Juan are October, September, and August, with average fares around $627–$638. The most expensive months are December, March, and January, where average fares climb to $754–$807.",
        "methodology": "This 'good deal' estimate shows a representative best price for each departure date across roughly a 12-month window (about 3 months back and 9 months forward). It is built from real flight prices found by Priceline users searching this route, accumulated into a price history for each departure date. Rather than weighting all of that history equally, we apply exponential time decay so recent prices dominate — a price seen yesterday counts almost in full, one from about a month ago roughly a third, and prices from a few months back very little — giving a figure that tracks today's market instead of a stale long-run average. Clear price outliers are removed before any calculation, departure dates with no observations are filled in from nearby dates, and the resulting curve is lightly smoothed so it reads as a clean seasonal trend rather than day-to-day noise.",
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Denver to San Juan?",
        "answer": "For Denver to San Juan, the best fares typically appear when you book 9–12 weeks before departure, with the lowest price around $674 at roughly 80 days out. During peak summer and holiday periods, demand pushes fares higher, so aiming for the early side of that window or even a bit further out can help lock in a better rate.",
        "methodology": "This booking-window guidance is built from the same real flight prices found by Priceline users searching this route, re-grouped by how many days before departure each price was seen (from the departure day out to about 180 days ahead) across the route's price history. At each booking lead time we report the 25th-percentile price — the cheaper end of what travelers were quoted, rather than the rock-bottom minimum (which can be a fluke) or the average (which is pulled up by expensive last-minute fares). The buy-or-wait advice then applies a risk premium that grows as departure approaches, since seat availability shrinks and prices become less predictable; using that adjusted curve we flag windows where waiting is likely to save a meaningful amount (at least $20 or 5%) versus windows where booking now is the better call. Isolated single-day recommendations are filtered out, so the advice only reflects a window that holds for several days in a row.",
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Denver to San Juan?",
        "answer": "There are no nonstop red‑eye flights from Denver to San Juan, but connecting overnight itineraries are available where the long leg is a red‑eye. Options include Frontier via Orlando (departing DEN at 11:52 PM, arriving MCO at 5:31 AM), Frontier via Dallas‑Fort Worth (DFW→SJU departing 11:01 PM, arriving 5:02 AM), United via Houston (IAH→SJU departing 11:56 PM, arriving 5:29 AM), and American via Miami (DEN→MIA departing 11:55 PM, arriving 5:49 AM). All of these red‑eye legs land in the early hours (between 5:02 AM and 5:49 AM) the next morning.",
        "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 Juan?",
        "answer": "United Airlines operates a daily nonstop flight from Denver to San Juan, with a typical median fare around $821.",
        "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"
        ]
      },
      "q8": {
        "question": "If I need a connection, what are common layover cities between Denver and San Juan?",
        "answer": "Common layovers include Miami, Charlotte, Atlanta and Orlando. These hubs offer extensive connections to San Juan, efficient transfer processes and often provide single-stop itineraries with competitive total travel times."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Denver to San Juan?",
        "answer": "On‑time performance is generally good, though afternoon thunderstorms in Denver can cause delays. Early morning departures offer the best odds, and United and Southwest have solid reliability on this route."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to San Juan?",
        "answer": "Mid-December to April offers dry, sunny, and warm weather with lower humidity, avoiding the rainy season and peak hurricane risk."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Denver to San Juan?",
        "answer": "Since Puerto Rico is a U.S. territory, this is a domestic flight requiring a Real ID or passport. U.S. citizens do not need a visa or passport for entry, but bring a payment method for bags and any vaccination certificates if required."
      },
      "q12": {
        "question": "Which airport should I use in San Juan?",
        "answer": "San Juan has one main airport, Luis Muñoz Marín International Airport, which serves all commercial flights to the city."
      },
      "q13": {
        "question": "How do I get to Denver Intl Airport from the city center?",
        "answer": "The A Line commuter train is the fastest and most popular option, running from Denver Union Station to the airport in about 37 minutes for $10.50. Ride‑share services like Uber and Lyft offer door‑to‑door convenience, typically taking 30‑45 minutes and costing roughly $40‑$70. Taxis are also available with similar travel times and metered fares; driving yourself and parking on‑site is possible but generally the most expensive choice, especially for longer trips. Several regional bus routes serve the airport as well, providing a low‑cost alternative at around $10 or less, though travel times vary by route.",
        "toolsUsed": [],
        "references": [
          {
            "url": "https://www.flydenver.com/parking-and-transportation/to-and-from/airport-transit-center/",
            "title": "Airport Transit Center | Denver International Airport",
            "time_published": "2026-02-24T17:09:34Z"
          },
          {
            "url": "https://flydenver.com/connections/",
            "title": "Connections | Denver International Airport",
            "favicon": "https://flydenver.com/apple-touch-icon.png",
            "time_published": "2023-09-14T15:33:21Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Automated_Guideway_Transit_System_(Denver_International_Airport)",
            "title": "Automated Guideway Transit System (Denver International Airport)",
            "time_published": "2026-06-01T08:54:40Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Denver%20International%20Airport",
            "title": "Denver International Airport",
            "time_published": "2026-04-30T15:08:23Z"
          },
          {
            "url": "https://www.faa.gov/?action=searchForAirport&airportcode=PSR",
            "title": "Federal Aviation Administration",
            "favicon": "https://www.faa.gov/themes/custom/faa/favicon.png",
            "time_published": "2026-07-17T12:00:00Z"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at San Juan airport?",
        "answer": "San Juan Airport (SJU) has an on-site hotel located within the terminal complex, so no shuttle is required. For other nearby options, there are hotels in the Isla Verde district, like the Residence Inn, just a short drive away, though they are not directly connected by an airport shuttle.",
        "toolsUsed": [],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/Luis_Mu%C3%B1oz_Mar%C3%ADn_International_Airport",
            "title": "Luis Muñoz Marín International Airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-07-21T20:24:02Z"
          },
          {
            "url": "https://sleepinginairports.net/guides/san-juan-airport-guide.htm",
            "title": "San Juan Airport Guide (SJU) - 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": "2018-10-02T00:00:36Z"
          },
          {
            "url": "https://activities.marriott.com/north-america/puerto-rico/utuado/activities/departure_from_old_san_juan_to_san_juan_sju_airport_by_minibus-XPVY9Q?property=PSEAL",
            "title": "Departure from Old San Juan to San Juan SJU Airport by Minibus",
            "time_published": "2026-04-10T00:00:00Z"
          },
          {
            "url": "https://activities.marriott.com/north-america/puerto-rico/san-juan/activities/san_juan_luxury_private_round_trip_transfer_sju_airport_cruise_pier_hotel-X48MR8?property=SJUXR",
            "title": "San Juan Luxury Private Round-Trip Transfer: SJU Airport - Cruise Pier - Hotel",
            "time_published": "2026-05-04T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Luis%20Mu%C3%B1oz%20Mar%C3%ADn%20International%20Airport",
            "title": "Luis Muñoz Marín International Airport",
            "time_published": "2026-04-23T21:46:13Z"
          },
          {
            "url": "https://www.marriott.com/es/en-us/hotels/sjurv-residence-inn-san-juan-isla-verde/overview/",
            "title": "Hotels San Juan Isla Verde Carolina, Puerto Rico | Residence Inn",
            "time_published": "2025-02-19T00:00:00Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Denver to San Juan?",
        "answer": "United Airlines flies nonstop from Denver to San Juan using a Boeing 737 MAX 8. On connecting itineraries, the most common aircraft on the longer leg are the Boeing 737-800 and 737 MAX 8 (via Orlando or Baltimore on Southwest) and the Boeing 737 MAX 9 (via Houston on United), with Frontier connections typically showing unspecified aircraft types. The exact aircraft can vary by day and airline, and Wi‑Fi and seatback entertainment are widely available on these routes.",
        "methodology": "Aircraft types are taken from the equipment each operating carrier schedules on this route, drawn from published airline timetables and airline equipment schedules in our flight-schedule database. They describe typical scheduled aircraft and can vary with seasonal or day-of-week assignments and last-minute equipment swaps.",
        "toolsUsed": [
          "route_aircraft"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Denver?",
        "answer": "Denver International Airport has a Delta Sky Club in the Main Terminal, Concourse A (4th floor, center core), accessible up to 3 hours before departure with premium food, beer and wine, Wi‑Fi, and flight monitors. There is also a Centurion Lounge in Concourse C, available to American Express Platinum and Centurion cardholders, offering complimentary food and drinks, a bar, and workspaces. Access to the Sky Club requires a Delta Sky Club membership, same‑day Delta One or SkyTeam premium cabin boarding pass, or eligible Amex card; day passes are not sold. The Centurion Lounge does not offer day passes — entry is limited to cardholders with same‑day boarding passes.",
        "toolsUsed": [],
        "references": [
          {
            "url": "https://americanexpress.com/en-gb/travel/lounges/the-platinum-card/DEN",
            "title": "American Express Lounges at Denver International Airport | Amex GB",
            "time_published": "2026-05-03T00:00:00Z"
          },
          {
            "url": "https://www.flydenver.com/",
            "title": "Denver International Airport | DEN",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-06-02T21:34:27Z"
          },
          {
            "url": "https://flydenver.com/at-the-airport",
            "title": "Exciting Things to Do at Denver International Airport",
            "time_published": "2026-02-18T15:39:31Z"
          },
          {
            "url": "https://www.americanexpress.com/en-us/travel/lounges/the-centurion-card-idc-en/DEN/Delta-Sky-Club-Main-Terminal-Concourse-A-IgRTEiZDls/",
            "title": "Delta Sky Club at Denver International Airport | Amex US",
            "time_published": "2026-03-18T00:00:00Z"
          },
          {
            "url": "https://carsandstays.delta.com/Denver-Hotels-Sleep-Inn-Suites-Denver-International-Airport.h23533743.Hotel-Information?categorySearch=any_option&chkin=2026-07-06&chkout=2026-07-07&destType=MARKET&destination=Denver%2C+CO%2C+United+States+of+America+%28DEN-All+Airports%29&latLong=39.74483000000001%2C-104.94829500000002&pwa_ts=1782175590171&referrerUrl=aHR0cHM6Ly9jYXJzYW5kc3RheXMuZGVsdGEuY29tL0hvdGVsLVNlYXJjaA%3D%3D&regionId=6139084&rfrr=HSR&rm1=a2&searchId=b9103c12-38ab-46f5-86a7-f3447411bdbe&selectedRatePlan=383244565&selectedRoomType=218717901&sort=RECOMMENDED&top_cur=USD&top_dp=126&useRewards=false&x_pwa=1",
            "title": "Sleep Inn & Suites Denver International Airport",
            "favicon": "https://carsandstays.delta.com/favicon.ico",
            "time_published": "2026-06-23T09:32:24Z"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Denver to San Juan?",
        "answer": "Baggage rules vary by airline. Basic economy typically does not include a checked bag; standard economy usually allows one checked bag and a carry-on. Premium cabins offer more generous allowances."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Denver to San Juan?",
        "answer": "On flights from Denver to San Juan, you'll typically find Economy and flat-bed Business class; Premium Economy is uncommon, and First class is not typically offered on this route."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies vary by airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy typically does not."
      }
    }
  }
}