{
  "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": "A nonstop flight from Denver (DEN) to Philadelphia (PHL) typically takes about 3 hours 30 minutes to 3 hours 45 minutes. With one stop, depending on the connection city, total travel time often ranges from 5 to 7 hours."
      },
      "q1": {
        "question": "Are there any direct flights from Denver to Philadelphia?",
        "answer": "Yes, there are direct non‑stop flights from Denver to Philadelphia, operated daily by four airlines: Southwest, United, American, and Frontier. Together they offer roughly 215 weekly non‑stop departures spread throughout the day from early morning until late evening. Southwest runs the most flights (about 75 per week), while Frontier typically offers the lowest median fare around $107.",
        "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 Philadelphia?",
        "answer": "Philadelphia International Airport (PHL) is just 7 miles from Center City, with a range of ground transportation options. The SEPTA Airport Line train is the most-used public transit, offering a quick, affordable ride to downtown in about 25 minutes. Taxis and ride-shares like Uber and Lyft are readily available and provide door-to-door convenience, though they can be pricier during peak times. Rental cars are on-site from major agencies, ideal for exploring beyond the city. The SEPTA train is generally the fastest and most popular choice, avoiding traffic and delivering you straight to central stations.",
        "toolsUsed": [],
        "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": "The cheapest months to fly from Denver to Philadelphia are April, September, and May, with average fares around $330–$336. The most expensive months are October, June, and July, when average prices climb to $389–$473.",
        "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 Philadelphia?",
        "answer": "For flights from Denver to Philadelphia, the best fares generally appear when booking 10 to 30 days in advance, with the absolute lowest around 15 days out at roughly $202. Booking more than two months ahead tends to be significantly more expensive, and while this route doesn't show a sharp summer or holiday spike in the data, prices rise steeply beyond 100 days out.",
        "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 Philadelphia?",
        "answer": "Yes, overnight red‑eye flights are available nonstop from Denver to Philadelphia. United and Frontier both operate daily late‑night departures, typically pushing back between 11:30 PM and midnight. Frontier flight 23:30 lands around 4:47 AM the next morning, and United's 23:45 and 23:59 services arrive in the early hours around 5:05–5:19 AM.",
        "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 operate nonstop flights from Denver to Philadelphia. Southwest leads with 75 weekly flights, followed by United at 72, American at 47, and Frontier at 21. Typical median fares are not available for this route in the current data.",
        "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 Philadelphia?",
        "answer": "Common layover cities for Denver to Philadelphia flights include Chicago, Dallas, Atlanta, and Charlotte. These hubs offer broad domestic connections and efficient transfer processes, with minimal added travel time. As this is a domestic U.S. route, visa‑free transit is not applicable."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Denver to Philadelphia?",
        "answer": "On‑time departures are reasonably consistent, though afternoon thunderstorms at Denver can cause delays. Early flights, especially on United and Southwest, tend to depart closer to schedule."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Philadelphia?",
        "answer": "April to May 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": "For this domestic U.S. flight, bring a Real ID or passport, ensure the name matches your ticket, and carry a payment method for baggage and any required health documents."
      },
      "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 offers extensive domestic and international connections."
      },
      "q13": {
        "question": "How do I get to Denver Intl Airport from the city center?",
        "answer": "From downtown Denver, the most popular and often fastest option is the RTD A‑Line commuter train, which reaches the airport in about 37 minutes. Ride‑share services like Uber and Lyft, as well as taxis, provide door‑to‑door convenience in roughly 30‑40 minutes, while shared shuttle vans offer a middle ground on cost. Driving yourself and parking at the airport is also possible, with economy lots connected by shuttle, though it tends to be the priciest choice for longer trips.",
        "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 Philadelphia airport?",
        "answer": "Philadelphia International Airport (PHL) has a micro-hotel located airside in the Terminal A-B connector and a traditional hotel connected to Terminal B, offering convenient on-site sleeping options without needing a shuttle. Additionally, free shuttles provide transfers to other nearby hotels for more choices.",
        "toolsUsed": [],
        "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 provides free Wi‑Fi throughout all terminals, with no time limit. Currency exchange services are offered by Travelex at counters in Terminals A‑West, A‑East, and the B/C connector, as well as kiosks in several other locations. A multi‑faith prayer room is available pre‑security in Terminal E, and there is a chapel post‑security in the B/C connector.",
        "toolsUsed": [],
        "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, travelers can request wheelchair assistance by contacting their airline at least 48 hours before departure, and the airport features an accessible Automated Guideway Transit System to move between concourses. Philadelphia International Airport offers accessibility services and programs through its AccessPHL initiative, with fully wheelchair-accessible SEPTA train stations at each terminal. Both airports advise contacting your airline in advance to arrange specific disability accommodations or mobility support.",
        "toolsUsed": [],
        "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": "Boeing 737 MAX 8 and Boeing 737-800 are the most common aircraft on nonstop flights from Denver to Philadelphia, operated by Southwest, American, and United. Frontier also serves the route nonstop, though the specific aircraft type isn't publicly listed. The exact aircraft can vary by day and airline, and Wi-Fi and seatback entertainment are widely available on these flights.",
        "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": "Nonstop service on Denver–Philadelphia is operated by four airlines: United (Star Alliance), American (oneworld), Southwest (no alliance), and Frontier (no alliance). United and American bring their respective global alliances to the route, while Southwest and Frontier are independent carriers; other alliances 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. 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"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Denver?",
        "answer": "Denver International Airport has a United Club in Concourse B (near gate B44) and a Delta Sky Club in Concourse A (center core, 4th floor). The United Club welcomes United Club members, Star Alliance Gold travelers, and those in United Polaris or international business/first, plus day passes for $59; it features a full bar, complimentary snacks, and runway views. The Delta Sky Club is accessible with Delta Sky Club membership, select Amex cards, or a Delta One or SkyTeam premium cabin ticket, and offers premium food, a full bar, and Wi-Fi. An American Express Centurion Lounge is also in Concourse C, open to Amex Platinum and Centurion cardholders, with chef-driven cuisine, craft cocktails, and a family room.",
        "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"
          }
        ]
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Possibilities depend on the airline and fare type, with flexible and premium tickets typically offering same‑day change or standby privileges while Basic Economy usually excludes them."
      }
    }
  }
}