{
  "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 (PHL) offers several ground transportation options to Center City, about 7 miles away. The SEPTA Airport Line provides direct rail service every 30 minutes, taking roughly 25 minutes and being the most-used transit link. Taxis are available with a flat rate of $32 to Center City, while rideshares like Uber and Lyft operate from designated pickup zones. Major rental car companies are on-site, and shared shuttle vans also serve the airport. The Airport Line is generally the fastest and most reliable option for avoiding traffic.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.phl.org/Pages/HomePage.aspx",
            "title": "PHL Philadelphia International Airport | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2026-07-14T18:42:29Z"
          },
          {
            "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": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Northeast_Philadelphia_Airport",
            "title": "Northeast Philadelphia Airport",
            "time_published": "2026-07-06T00:50:56Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Philadelphia%20International%20Airport",
            "title": "Philadelphia International Airport",
            "time_published": "2026-05-01T12:23:05Z"
          },
          {
            "url": "https://www.phl.org/media/1869",
            "title": "City Mask Mandate | PHL.org",
            "time_published": "2026-01-01T00:00:00Z"
          }
        ]
      },
      "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": "The fastest and most popular way to reach Denver International Airport from downtown is the RTD A‑Line commuter train, which runs from Denver Union Station to the airport in about 37 minutes. Public buses, including the RTD SkyRide, offer a lower‑cost alternative. Ride‑share services like Uber and Lyft, taxis, and shared‑van shuttles provide door‑to‑door convenience, while driving and parking on‑site is also an option.",
        "toolsUsed": [
          "article_lookup"
        ],
        "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 Philadelphia airport?",
        "answer": "Philadelphia International Airport (PHL) has a micro-hotel airside in the Terminal A-B connector and a traditional hotel connected to Terminal B, both accessible without leaving the airport. There are no capsule hotels or sleeping pods at PHL. Free shuttles also serve several nearby hotels for additional options.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.sleepinginairports.net/guides/philadelphia-airport-guide.htm",
            "title": "Philadelphia Airport Guide (PHL) - Sleeping in Airports",
            "time_published": "2026-01-16T18:04:50Z"
          },
          {
            "url": "https://www.phl.org/Pages/HomePage.aspx",
            "title": "PHL Philadelphia International Airport | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://sleepinginairports.net/airport-hotels/transit-hotels.htm",
            "title": "Transit Hotels – 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": "2026-06-22T14:15:16Z"
          },
          {
            "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": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Northeast_Philadelphia_Airport",
            "title": "Northeast Philadelphia Airport",
            "time_published": "2026-07-06T00:50:56Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Philadelphia_Municipal_Airport",
            "title": "Philadelphia Municipal Airport",
            "time_published": "2026-07-06T02:22:07Z"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Philadelphia Intl Airport?",
        "answer": "Philadelphia International Airport (PHL) offers currency exchange services through Travelex kiosks located in Terminals A‑West, A‑East, and B/C, though hours may vary and it's advisable to check availability. A multi‑faith prayer room is available pre‑security in the connector between Terminals B and C, providing a quiet space for reflection. Free Wi‑Fi is available throughout all terminals, and travelers can connect by selecting the \\\\\"PHL Free Wi‑Fi\\\\\" network.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "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": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://www.phl.org/Pages/HomePage.aspx",
            "title": "PHL Philadelphia International Airport | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Philadelphia%20International%20Airport%20stations",
            "title": "Philadelphia International Airport stations",
            "time_published": "2026-02-08T03:51:35Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Airport_Terminal_stations_(SEPTA)",
            "title": "Airport Terminal stations (SEPTA)",
            "time_published": "2026-03-05T22:10:17Z"
          },
          {
            "url": "https://phl.org/about/news/press-releases/node/487",
            "title": "Hotel Association Recognizes Philadelphia International Airport | PHL.org",
            "time_published": "2026-01-01T00:00:00Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Denver and Philadelphia airports?",
        "answer": "At Denver International Airport, passengers can arrange wheelchair assistance by contacting their airline at least 48 hours before departure, and the airport features a 24/7 Automated Guideway Transit System that connects concourses with the terminal, though specific children’s play areas are not highlighted in the available data. Philadelphia International Airport offers a range of accessibility services and programs through its 'AccessPHL' initiative, with all SEPTA Airport Line stations being fully handicapped accessible via elevators and escalators, but dedicated children’s facilities are not mentioned in the provided information. Both airports recommend coordinating mobility assistance directly with your airline in advance.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.flydenver.com/traveler_services/accessibility",
            "title": "Accessibility and Mobility | Denver International Airport",
            "time_published": "2026-04-02T20:29:43Z"
          },
          {
            "url": "https://www.flydenver.com/event/61719/",
            "title": "| Denver International Airport",
            "favicon": "https://www.flydenver.com/apple-touch-icon.png",
            "time_published": "2026-07-09T15:14:02Z"
          },
          {
            "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"
          },
          {
            "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": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://www.phl.org/Pages/HomePage.aspx",
            "title": "PHL Philadelphia International Airport | PHL.org",
            "favicon": "https://www.phl.org/themes/basic/apple-touch-icon.png",
            "time_published": "2026-07-14T18:42:29Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Philadelphia%20International%20Airport%20stations",
            "title": "Philadelphia International Airport stations",
            "time_published": "2026-02-08T03:51:35Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/International_airport",
            "title": "International airport",
            "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png",
            "time_published": "2026-07-21T20:56:20Z"
          },
          {
            "url": "https://phl.org/about/news/press-releases/node/487",
            "title": "Hotel Association Recognizes Philadelphia International Airport | PHL.org",
            "time_published": "2026-01-01T00:00:00Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Denver to Philadelphia?",
        "answer": "On nonstop flights from Denver to Philadelphia, the Boeing 737-800 is the most common aircraft, operated by Southwest, United, and American. The Boeing 737 MAX 8 also appears frequently on this route, alongside occasional Airbus A320-100 and Boeing 737 MAX 9 service. Specific aircraft can vary by day and airline, and some Frontier and Southwest flights do not publish their equipment type.",
        "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"
        ]
      },
      "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 has two major lounges: the Delta Sky Club in Concourse A and the Centurion Lounge in Concourse C. The Delta Sky Club offers premium food, a full bar, and workstations, and is accessible with a Delta Sky Club membership, same-day Delta One or SkyTeam business class ticket, or certain American Express cards. The Centurion Lounge provides chef-inspired dining, craft cocktails, and a family room, and is available to American Express Platinum and Centurion cardholders, with day passes not sold. Both lounges require a same-day boarding pass and have capacity limits.",
        "toolsUsed": [
          "article_lookup"
        ],
        "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"
          }
        ]
      },
      "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."
      }
    }
  }
}