{
  "response": {
    "Key": "DEN-PHL",
    "orig": {
      "code": "DEN",
      "type": "airport",
      "city": "Denver",
      "fullCity": "Denver, Colorado",
      "airport": "Denver Intl Airport"
    },
    "dest": {
      "code": "PHL",
      "type": "airport",
      "city": "Philadelphia",
      "fullCity": "Philadelphia, Pennsylvania",
      "airport": "Philadelphia Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Denver to Philadelphia?",
        "answer": "The flight from Denver to Philadelphia is about 1,550 miles and typically takes 3 hours 36 minutes. The return flight is longer at 4 hours 10 minutes, a difference of 34 minutes due to prevailing winds.",
        "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 Philadelphia?",
        "answer": "Philadelphia International Airport offers several ground transportation options to Center City, including SEPTA Regional Rail trains every 30 minutes, SEPTA bus routes, taxis with a flat $32 rate to Center City, ride shares, rental cars, and limousine/van services. The SEPTA Airport Line is the most used and often fastest option, taking about 25 minutes to Center City stations like 30th Street and Suburban. Taxis and ride shares are readily available and convenient, while rental car shuttles and hotel shuttles serve other needs.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.phl.org/to-and-from/ground-transportation",
            "title": "Ground Transportation | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://phl.org/getting-around/public-transportation",
            "title": "Public Transportation | PHL.org",
            "favicon": "https://phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/ACI-NA-2026/navigate-phl",
            "title": "Navigate PHL | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/getting-around/taxis-and-limousines",
            "title": "Taxis, Limousines and Shuttle Services | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/faqs",
            "title": "FAQs | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Denver to Philadelphia?",
        "answer": "Average fares from Denver to Philadelphia bottom out around $273 in late January, the cheapest stretch of the year. The cheapest months overall are January ($278), February ($285), and September ($300), while the most expensive period is late December, when average fares climb to $382 — with December ($353) and June ($346) the priciest months overall.",
        "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 Philadelphia?",
        "answer": "For flights from Denver to Philadelphia, the sweet spot is booking 4–6 weeks before departure, when fares average about $239, with the absolute lowest price around $237 at 35 days out. Booking much earlier (over 100 days) pushes fares above $280, and last-minute purchases within two weeks can cost over $300. For summer and major holidays, demand is higher, so aim for the earlier end of that window or even slightly sooner to lock in the best price.",
        "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 Philadelphia?",
        "answer": "Yes, overnight red-eye flights are available nonstop from Denver to Philadelphia. United and Frontier both operate daily red-eyes on this route, with departures typically between 11:30 PM and midnight. These flights arrive in the early hours — around 4:30 AM to 5:00 AM local time 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 Philadelphia?",
        "answer": "Southwest, United, American, and Frontier all fly nonstop from Denver to Philadelphia. Southwest offers the most frequent service with 75 weekly flights, followed by United at 72, American at 47, and Frontier at 21. Typical per‑carrier fares are not available for this route, so I can’t quote median prices.",
        "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 Philadelphia?",
        "answer": "Common layover cities for Denver to Philadelphia include Chicago O'Hare, Dallas/Fort Worth, and Charlotte. Chicago O'Hare offers extensive connections and frequent flights, Dallas/Fort Worth provides efficient transfers and broad network access, and Charlotte is a major hub with quick connections."
      },
      "q9": {
        "question": "How reliable are on‑time arrivals on this route from Denver to Philadelphia?",
        "answer": "On the Denver to Philadelphia route, American Airlines is the most reliable for on-time arrivals, with 78.9% of flights landing within 15 minutes of schedule and a 2.2% cancellation rate. United follows at 75.7% on-time with a 0.1% cancellation rate, Southwest at 61.9% on-time with a 0.3% cancellation rate, and Frontier at 56.1% on-time with a 0.8% cancellation rate.",
        "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 Philadelphia?",
        "answer": "April to June and September to October offer pleasant temperatures and fewer tourists."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Denver to Philadelphia?",
        "answer": "Bring a REAL ID-compliant driver’s license or passport, a payment method for baggage fees, and any required vaccination certificates. Since this is a domestic flight, no visa or proof of onward travel is needed."
      },
      "q12": {
        "question": "Which airport should I use in Philadelphia?",
        "answer": "Philadelphia International Airport is the only commercial airport serving the city. It is located about 7 miles southwest of downtown and is a focus city for American Airlines, offering extensive domestic and international flights."
      },
      "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 budget-friendly option, taking about 37 minutes to reach the airport from Union Station with trains every 15 minutes. Ride-share services like Uber and Lyft, as well as taxis, offer quicker door-to-door trips in about 25–35 minutes for a higher cost, with designated pickup areas on Level 5. Shared-ride shuttles provide hotel drop-off service at moderate cost, while driving yourself is possible with on-site parking, though it's generally the most expensive for short trips. The A Line is the fastest public transport choice, while ride-share is fastest overall and most convenient for solo 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 Philadelphia airport?",
        "answer": "Yes, Philadelphia International Airport has both a hotel connected to the terminal and sleep suites inside the airport. The Philadelphia Airport Marriott is connected to Terminal B by a skybridge, and Minute Suites offers private sleep cabins on the airside of the Terminal A-B connector. Rates for Minute Suites start at $65 per hour, with an overnight option of $215 for eight hours.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://sleepinginairports.net/guides/philadelphia-airport-guide.htm",
            "title": "Philadelphia Airport Guide (PHL) - 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": "2018-08-08T21:09:17Z"
          },
          {
            "url": "https://sleepinginairports.net/lounges/philadelphia-airport-lounges.htm",
            "title": "Philadelphia   Airport Lounges (PHL) – Sleeping in Airports",
            "favicon": "https://www.sleepinginairports.net/wp-content/uploads/2018/09/cropped-sia-logo-180x180.png"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/phlsa-sheraton-suites-philadelphia-airport/overview/",
            "title": "Sheraton Suites Philadelphia Airport - Free Shuttle to PHL",
            "time_published": "2024-10-11T00:00:00Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/phlar-philadelphia-airport-marriott/overview/",
            "title": "Philadelphia Airport Marriott | PHL Hotel with Skywalk & Event Venues",
            "favicon": "https://cache.marriott.com/Images/Mobile/MC_Logos/MarriottApple57x57.png"
          },
          {
            "url": "https://ihg.com/philadelphia-pennsylvania/hotels-near-philadelphia-international",
            "title": "38 Hotels Near PHL Philadelphia International (PHL) Airport | IHG",
            "favicon": "https://digital.ihg.com/is/image/ihg/app-web-chiclet-ihg?fmt=png-alpha"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Philadelphia Intl Airport?",
        "answer": "Philadelphia International Airport offers free Wi-Fi throughout its terminals, as listed among its services and amenities. The airport also provides ATM locations for cash access, though specific currency exchange offices are not explicitly mentioned in the available information. PHL includes a Liberty USO Lounge and other lounges, but prayer rooms or chapels are not listed among the standard amenities described.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://phl.org/at-phl/services-and-amenities",
            "title": "Services and Amenities | PHL.org",
            "favicon": "https://phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://phl.org/newsroom/guide-to-PHL-Terminals",
            "title": "Making the Most of Your Time at the Airport: A Guide to PHL’s Terminals | PHL.org",
            "favicon": "https://phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2024-11-25T00:00:00Z"
          },
          {
            "url": "https://www.phl.org/",
            "title": "PHL Philadelphia International Airport | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2026-09-17T20:58:41Z"
          },
          {
            "url": "https://www.phl.org/faqs",
            "title": "FAQs | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://phl.org/about/news/fast-facts",
            "title": "PHL Fast Facts | PHL.org",
            "favicon": "https://phl.org/themes/basic/apple-touch-icon.png"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Denver and Philadelphia airports?",
        "answer": "Denver International Airport provides accessible parking, electric carts to gates, a Hidden Disabilities Sunflower program, and wheelchair assistance with 48-hour advance notice recommended for some ground transportation. Philadelphia International Airport offers wheelchair assistance through your airline (request when booking), free Aira visual/ASL interpretation, quiet rooms, accessible restrooms, mother's rooms, and a children's play area with family-friendly activities. Both airports support travelers with disabilities and families, though advance requests for mobility help are best made at least 48 hours before travel.",
        "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.phl.org/at-phl/accessibility",
            "title": "Accessibility | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/at-phl/accessibility/wheelchair-assistance",
            "title": "Wheelchair Assistance | AccessPHL",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/at-phl/accessibility/accessible-parking",
            "title": "Accessible Parking | AccessPHL",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/faqs",
            "title": "FAQs | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png"
          },
          {
            "url": "https://www.phl.org/",
            "title": "PHL Philadelphia International Airport | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2026-09-17T20:58:41Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Denver to Philadelphia?",
        "answer": "Southwest Airlines flies the most frequent service between Denver and Philadelphia, typically on the Boeing 737-700. American Airlines uses the Airbus A321 and Boeing 737-800, United operates a mix of Boeing 737 MAX 8, MAX 9, 737-800, 737-900, and Airbus A320, and Frontier flies the Airbus A320 family.",
        "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 Philadelphia?",
        "answer": "Southwest, United, American, and Frontier all operate nonstop flights from Denver to Philadelphia. United and American are members of Star Alliance and Oneworld, respectively, while Southwest and Frontier are not affiliated with any major global alliance.",
        "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 for departing travelers, including American Airlines Admirals Club near Gate C-32, American Express Centurion Lounge near Gate C-46, Capital One Lounge near Gate A-34, Delta Sky Club on the bridge from Jeppesen Terminal to Concourse A, United Club locations at A-25, B-44, and B-32 (the B Gates West location is temporarily closed), and United Club Fly near Gate B-60. A USO Denver lounge is also available on Level 4 above the Concourse A mezzanine. For free relaxation, the Rest and Recharge area on the Concourse A mezzanine offers comfortable seating and recliners.",
        "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"
          }
        ]
      },
      "q22": {
        "question": "What cabin and seat options are typical from Denver to Philadelphia?",
        "answer": "Flights from Denver to Philadelphia generally offer Economy and standard domestic First class; flat‑bed Business and Premium Economy are not typical on this route."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies depend on the airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy generally does not."
      }
    }
  }
}