{ "response": { "Key": "DEN-MAD", "orig": { "code": "DEN", "type": "airport", "city": "Denver", "fullCity": "Denver, Colorado", "airport": "Denver Intl Airport" }, "dest": { "code": "MAD", "type": "airport", "city": "Madrid", "fullCity": "Madrid, Spain", "airport": "Adolfo Suárez Barajas Airport" }, "faq": { "q0": { "question": "What is the typical flight duration from Denver to Madrid?", "answer": "A nonstop flight from Denver (DEN) to Madrid (MAD) typically takes about 9 hours 30 minutes. With one stop, total travel time often ranges from 12 to 15 hours, depending on the layover city. The return flight from Madrid to Denver is usually slightly longer, averaging around 10 hours 30 minutes nonstop." }, "q1": { "question": "Are there any direct flights from Denver to Madrid?", "answer": "There are no nonstop flights from Denver to Madrid. The shortest one-stop routings typically connect via Dallas/Fort Worth (DFW) on American or Iberia, with a total travel time around 11–12 hours including the layover. Other common connecting points include London Heathrow (LHR) on British Airways and Frankfurt (FRA) on Lufthansa, though those add a couple of extra hours.", "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" ] }, "q2": { "question": "Are there visa requirements to travel from Denver to Madrid?", "answer": "Yes, visa requirements apply for travel between Denver (USA) and Madrid (Spain). U.S. citizens can enter Spain and the Schengen Area for up to 90 days within any 180-day period without a visa for tourism or business. From 2025, U.S. citizens will need an ETIAS travel authorization. Spanish citizens can travel to the U.S. under the Visa Waiver Program with a valid ESTA authorization. Other nationalities should check specific visa rules for both the U.S. and the Schengen Area." }, "q4": { "question": "When is the cheapest time to fly from Denver to Madrid?", "answer": "The cheapest months to fly from Denver to Madrid are October, November, and April, with average fares around $783–$791, while June, July, and May are the most expensive, averaging $967–$1,142.", "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 Madrid?", "answer": "For the best fares from Denver to Madrid, aim to book 13 to 16 weeks before departure, when prices average around $802. Booking about 175 days out can yield the lowest fare near $788, while waiting until two weeks before travel typically pushes prices above $950.", "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 Madrid?", "answer": "There are no nonstop red‑eye flights from Denver to Madrid, but connecting itineraries whose long leg is an overnight flight are available. For example, British Airways and Iberia both offer a Denver–London Heathrow overnight leg departing at 18:40 and arriving at 10:35 (next morning), connecting onward to Madrid. Other one‑stop red‑eye options route through Chicago O'Hare (Iberia, departing 16:55, arriving 08:20), Dallas/Fort Worth (American or Iberia, departing 16:45, arriving 09:05), Frankfurt (Lufthansa, departing 17:40, arriving 11:15), Munich (Lufthansa, departing 16:15, arriving 10:00), and several other US and Canadian gateways.", "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 Madrid?", "answer": "No airline operates nonstop from Denver to Madrid. The most common one‑stop routings are on Iberia via Chicago O’Hare (up to 6 daily connections, with 4 on Iberia metal) or Dallas/Fort Worth (up to 5 daily, a mix of American and Iberia), British Airways via London Heathrow (6 daily), Air Canada via Toronto (4 daily), and Lufthansa via Frankfurt (4 daily). Typical per‑carrier fares are not provided in the schedule 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 Madrid?", "answer": "Common layover cities include New York (JFK), Atlanta, Dallas/Fort Worth, and Miami, which offer frequent connections and keep total travel time competitive. These U.S. hubs provide broad domestic feeds and efficient transfers before the transatlantic leg, though they are entirely domestic connections so visa-free transit is irrelevant." }, "q9": { "question": "How reliable are on‑time departures on this route from Denver to Madrid?", "answer": "On‑time reliability is generally good, though afternoon thunderstorms in Denver can cause delays. Morning departures, particularly on United, tend to be more punctual." }, "q10": { "question": "Which months have the best weather for traveling to Madrid?", "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 Madrid?", "answer": "Bring a passport valid for at least three months beyond your planned stay, any required Schengen visa or ETIAS authorization, proof of onward or return travel, a payment method for baggage, and any necessary vaccination certificates." }, "q12": { "question": "Which airport should I use in Madrid?", "answer": "Madrid has one primary airport, Adolfo Suárez Madrid–Barajas, which serves all commercial flights to the city." }, "q13": { "question": "How do I get to Denver Intl Airport from the city center?", "answer": "The University of Colorado A Line commuter train is the fastest and most popular option, running directly from Denver Union Station downtown to the airport Transit Center in about 37 minutes. Public buses, including RTD regional routes, also serve the airport at a lower cost but with longer travel times. Ride‑share services like Uber and Lyft, along with taxis, offer door‑to‑door convenience for a higher fare, and driving yourself is possible with on‑site parking available at various price levels.", "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 Madrid airport?", "answer": "Madrid Airport has an on-site hotel called Air Rooms in Terminal 4, which offers private rooms for overnight stays or 3-6 hour blocks during the day and includes shower facilities. There are no capsule hotels or sleeping pods, but comfortable rest zones with padded reclining chairs are available in Terminal 4S near Gate 17. Nearby hotels like the ibis Madrid Aeropuerto Barajas are connected by shuttle, though service may be limited.", "toolsUsed": [], "references": [ { "url": "https://all.accor.com/a/en/destination/place/hotels-adolfo-suarez-madrid-barajas-airport-ci266.html", "title": "Hotels near Adolfo Suárez Madrid-Barajas Airport, Madrid: book with all.accor.com", "time_published": "2026-04-21T00:00:00Z" }, { "url": "https://sleepinginairports.net/guides/madrid-barajas-airport-guide.htm", "title": "Madrid-Barajas Airport Guide (MAD) - 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": "2018-10-02T00:00:28Z" }, { "url": "https://activities.marriott.com/europe/spain/community-of-madrid/madrid/activities/private_shuttle_transfer_from_city_centre_to_airport-X54GOE?property=MADCO", "title": "Private Shuttle Transfer from City Centre to Airport", "time_published": "2026-02-28T00:00:00Z" }, { "url": "https://serviciosvip.aena.es/vip/en/aeropuertos/adolfo-suarez-madrid-barajas/servicios-asistencia-pasajaros/meet-and-assist", "title": "Assistance services at Madrid Barajas Airport", "time_published": "2026-02-02T00:00:00Z" }, { "url": "https://www.sleepinginairports.net/sleep-guide/sleeping-in-madrid-barajas-airport.htm", "title": "Sleeping in Madrid Barajas Airport", "time_published": "2024-09-12T00:00:00Z" }, { "url": "https://all.accor.com/gb/place/hotels-adolfo-suarez-madrid-barajas-airport-ci266-v2418.shtml", "title": "Hotels near Adolfo Suárez Madrid-Barajas Airport, Madrid: book with all.accor.com", "time_published": "2024-09-25T00:00:00Z" } ] }, "q16": { "question": "Are there accessible services or children's facilities at the Denver and Madrid airports?", "answer": "Denver International Airport (DEN) advises travelers to contact their airline at least 48 hours before departure to arrange wheelchair assistance, and service animals are permitted throughout the terminal. Madrid‑Barajas Airport (MAD) offers a premium Meet & Assist escort service that must be booked at least 72 hours in advance, providing personalized support through departures, arrivals, or connections. While DEN does not advertise dedicated children’s play areas, MAD’s terminals include family‑friendly amenities, though a specific play zone is not mentioned in available information.", "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://serviciosvip.aena.es/vip/en/aeropuertos/adolfo-suarez-madrid-barajas/servicios-asistencia-pasajaros/meet-and-assist", "title": "Assistance services at Madrid Barajas Airport", "time_published": "2026-02-02T00:00:00Z" }, { "url": "http://www.aena.es/en/madrid-barajas-adolfo-suarez/airport-services/shops-and-restaurants/madrid-duty-free.html&t=t2", "title": "Madrid Duty Free | Adolfo Suárez Madrid-Barajas Airport | Aena", "time_published": "2026-01-01T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Madrid%E2%80%93Barajas%20Airport", "title": "Madrid–Barajas Airport", "time_published": "2026-04-23T21:26:07Z" }, { "url": "https://en.wikipedia.org/?diff=178292758", "title": "Madrid–Barajas Airport: Difference between revisions - Wikipedia", "time_published": "2007-12-16T14:38:20Z" }, { "url": "http://www.aena.es/en/madrid-barajas-adolfo-suarez/airport-services/shops-and-restaurants/madrid-arrivalshop.html&t=t2", "title": "El Mercado Madrid Duty Free | Adolfo Suárez Madrid-Barajas Airport | Aena", "time_published": "2026-01-01T00:00:00Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Denver to Madrid?", "answer": "There's no nonstop service from Denver to Madrid, so flights connect through European or North American hubs. On the long-haul leg, you'll most often see the Airbus A330-300, with the A350-1000, Boeing 777-200, and A380 also making appearances; the exact aircraft varies by airline and day. Short connecting segments within North America typically use Airbus A320-family or Boeing 737 variants. Wi-Fi and seatback entertainment are widely available on these long-haul aircraft, though specifics depend on the carrier.", "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 Madrid?", "answer": "Denver to Madrid has no nonstop service, but one-stop connections are offered by oneworld carriers American, Iberia, and British Airways; Star Alliance carriers United, Lufthansa, Air Canada, and Turkish Airlines; and SkyTeam's Air Europa. JetBlue also operates connecting itineraries on this route but is not a member of any 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. 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": "At Denver International Airport (DEN), the two primary lounge options are The Centurion Lounge in Concourse C and the Delta Sky Club in the Main Terminal, Concourse A. The Centurion Lounge is accessible to American Express Platinum and Centurion cardholders, and offers premium food, a full bar, and workstations. The Delta Sky Club admits Delta One or SkyTeam premium cabin passengers, elite members, and those with an eligible Delta credit card or day pass; it features premium food, beer and wine, and flight monitors. Both lounges provide Wi‑Fi and comfortable seating, but access is subject to capacity limits.", "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®ionId=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 Madrid?", "answer": "Baggage allowances on Denver to Madrid flights depend on the airline and fare type. Basic economy tickets are restrictive and often do not include a checked bag, while standard international economy fares typically allow 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 Madrid?", "answer": "Flights from Denver to Madrid usually provide Economy, often Premium Economy, and flat-bed Business class; First class is uncommon." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary by carrier and fare class; flexible tickets and premium cabins typically allow same‑day changes or standby, while restrictive fares rarely do." } } } }