{
  "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": {
      "q2": {
        "question": "Are there visa requirements to travel from Denver to Madrid?",
        "answer": "For United States citizens traveling from Denver to Madrid, no visa is required for a short tourist visit, with visa-free entry permitted for up to 90 days within any 180-day period.\n\nThis is general guidance to help you plan, not official immigration advice — entry rules can change and can depend on your nationality and circumstances, so please confirm the current requirements with the relevant embassy or official government source before you travel.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://en.wikipedia.org/wiki/Visa_policy_of_the_Schengen_Area",
            "title": "Visa policy of the Schengen Area",
            "favicon": "https://en.wikipedia.org/static/favicon/wikipedia.ico"
          },
          {
            "url": "https://en.wikipedia.org/wiki/Visa_policy_of_Spain",
            "title": "Visa policy of Spain",
            "favicon": "https://en.wikipedia.org/static/favicon/wikipedia.ico"
          },
          {
            "url": "https://www.gov.uk/foreign-travel-advice/spain/entry-requirements",
            "title": "Spain entry requirements — GOV.UK",
            "favicon": "https://www.gov.uk/favicon.ico"
          }
        ],
        "preopenedReferences": true,
        "stageOnly": true
      },
      "q3": {
        "question": "What are the ground transportation options in Madrid?",
        "answer": "From Madrid-Barajas Airport, the most-used option is the Metro (Line 8) which connects directly to the city center via Nuevos Ministerios, while the Cercanías commuter train (C-1 and C-10 lines) from Terminal 4 offers a fast ride to Atocha, Chamartín, and Príncipe Pío. Taxis are readily available at all terminals with a flat fare of €33 to the city center, and ride-share services like Uber and Cabify operate with designated pickup points. The 24-hour Exprés Aeropuerto bus (line 203) runs from Atocha to the airport every 15–20 minutes, and local EMT buses (lines 101 and 200) serve nearby neighborhoods. Car rentals are available at the airport, but driving and parking in central Madrid is often impractical, so most travelers choose the Metro or train for speed and affordability. Overall, the Metro and Cercanías are the fastest and most-used public options for reaching the city center, with taxis preferred for door-to-door convenience.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/getting-there/trains.html",
            "title": "How to get here by train | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/getting-there/bus.html",
            "title": "How to get here by bus | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/airport-services/transport-between-terminals.html",
            "title": "Transport between terminals | Madrid-Barajas Airport | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/getting-there/taxi.html",
            "title": "How to get here by taxi | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "time_published": "2026-01-01T00:00:00Z"
          },
          {
            "url": "https://www.aena.es/es/adolfo-suarez-madrid-barajas/como-llegar/autobus.html",
            "title": "Cómo llegar en autobús | Aeropuerto Adolfo Suárez Madrid-Barajas | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Denver to Madrid?",
        "answer": "Flights from Denver to Madrid are cheapest in late January, when average fares bottom out around $368. The cheapest months overall are September ($375), January ($381), and October ($382), while the most expensive period is late December at an average of $498. December is the priciest month at $471, followed by June at $453.",
        "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 Madrid?",
        "answer": "For Denver to Madrid, the sweet spot is booking 4-6 weeks before departure, with the very best single-day fare appearing about 30 days out at $343. Booking much earlier (like 6 months ahead) tends to cost around $532, while last-minute fares also rise. Summer and holiday periods typically push that ideal window earlier, so aim closer to 6-8 weeks out for peak travel dates.",
        "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 Madrid?",
        "answer": "There are no nonstop red-eyes from Denver to Madrid, but several one-stop itineraries have an overnight long leg. The earliest red‑eye departure from Denver is a Lufthansa flight via Munich at 4:15 PM, arriving in Madrid at 10:00 AM the next morning. Another Lufthansa option departs Denver at 5:40 PM via Frankfurt and arrives at 11:15 AM. Other connecting red‑eyes route through Chicago (Iberia), Dallas/Fort Worth (American), Philadelphia (American), Newark (United), Washington Dulles (United), Boston (JetBlue), New York JFK (Delta), and Toronto (Air Canada), with long‑leg departures ranging from 4:45 PM to 10:30 PM and arrivals between 8:05 AM and 11:30 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 Madrid?",
        "answer": "There is no nonstop service from Denver to Madrid. Common one-stop routings include Iberia and American via Chicago O'Hare, American via Dallas/Fort Worth, United via Newark, Lufthansa via Frankfurt, Air Canada via Toronto, Air France via Paris Charles de Gaulle, and Delta via Atlanta. Iberia via Chicago O'Hare appears most frequently, with around 14 daily connections, followed by American via Dallas/Fort Worth with about 10.",
        "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 Madrid?",
        "answer": "Common one-stop hubs include Dallas/Fort Worth, Atlanta, Frankfurt, and London. Dallas and Atlanta offer broad U.S. connections with efficient transfers, while Frankfurt and London provide extensive European networks and visa-free transit for many nationalities."
      },
      "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 than the hot summer months."
      },
      "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 stay, and if a U.S. citizen, no visa is needed for short visits. Carry proof of onward travel, a credit card for baggage fees, and confirm any current health document requirements."
      },
      "q12": {
        "question": "Which airport should I use in Madrid?",
        "answer": "Madrid-Barajas is the only major airport serving Madrid, located about 12 km northeast of the city centre with excellent metro and bus links to downtown and popular attractions."
      },
      "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 economical option, offering direct service to the airport in about 37 minutes with departures every 15 minutes around the clock. Ride-share services like Uber and Lyft, as well as taxis, are faster at 25–35 minutes but cost more, with pickup on Level 5. Driving yourself is possible with on-site parking, though it's generally the most expensive option when factoring in daily rates. Shared shuttle vans provide a middle-ground cost and are convenient for hotel drop-offs, taking 45–60 minutes.",
        "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 Madrid airport?",
        "answer": "Madrid–Barajas Airport has an on-site transit hotel called Aerotel Madrid Airport, located inside Terminal 4 on Floor 1, landside, with rooms available for day use or overnight. There are also GettSleep sleeping pods in Terminal 4S, airside, with 32 soundproof capsules. Both provide sleeping facilities directly within the airport.",
        "toolsUsed": [
          "article_lookup"
        ],
        "references": [
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/airport-services/categories-and-terminals/air-rooms-and-sleeping-pods.html",
            "title": "Air Rooms and sleeping pods | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "time_published": "2026-01-01T00:00:00Z"
          },
          {
            "url": "https://www.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://www.aena.es/es/adolfo-suarez-madrid-barajas/servicios-del-aeropuerto/categorias-y-terminales/air-rooms-y-cabinas-de-descanso.html",
            "title": "Air Rooms | Aeropuerto Adolfo Suárez Madrid-Barajas | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://all.accor.com/a/tr/destination/place/hotels-adolfo-suarez-madrid-barajas-airport-ci266.html",
            "title": "Adolfo Suárez Madrid-Barajas Havalimanı, Madrid yakınındaki oteller: all.accor.com ile rezervasyon yapın",
            "time_published": "2026-03-14T00:00:00Z"
          },
          {
            "url": "https://www.melia.com/sq/hotels/spanje/madrid/madrid-airport-suites-by-melia",
            "title": "Madrid Airport Suites Affiliated by Meliá | Çmimi më i mirë online për apartamente 2-dhomëshe në Madrid | Melia.com",
            "favicon": "https://www.melia.com/favicon.ico"
          }
        ]
      },
      "q15": {
        "question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Adolfo Suárez Barajas Airport?",
        "answer": "Adolfo Suárez Madrid-Barajas Airport offers currency exchange offices in multiple terminals, including T1, T2, and T4, operated by various providers. Prayer rooms and chapels are available, with locations such as the chapel in Terminal 2 and multi-faith prayer rooms in T4. Free Wi-Fi is provided throughout all terminals, accessible by connecting to the 'AIRPORT FREE WIFI AENA' network.",
        "toolsUsed": [
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        ],
        "references": [
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/airport-services/categories-and-terminals/air-rooms-and-sleeping-pods.html",
            "title": "Air Rooms and sleeping pods | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "time_published": "2026-01-01T00:00:00Z"
          },
          {
            "url": "http://www.aena.es/es/aeropuerto-madrid-barajas/index.html",
            "title": "Página principal | Aeropuerto Adolfo Suárez Madrid-Barajas | Aena",
            "favicon": "http://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/vip-services/vip-lounges/salas-vip-t2.html",
            "title": "T2 VIP lounge | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/airport-services/categories-and-terminals/security.html",
            "title": "Security | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "time_published": "2026-01-01T00:00:00Z"
          }
        ]
      },
      "q16": {
        "question": "Are there accessible services or children's facilities at the Denver and Madrid airports?",
        "answer": "Denver International Airport offers electric carts to transport elderly or disabled passengers to airline gates, accessible parking at all airport-owned facilities, and a Hidden Disabilities Sunflower Lanyard Program for travelers with hidden disabilities. Adolfo Suárez Madrid-Barajas Airport provides a Meet & Assist personalized welcome and escort service for departures, arrivals, or transit, which must be purchased at least 72 hours in advance. To arrange mobility assistance at either airport, request it through your airline at least 48 hours before the flight.",
        "toolsUsed": [
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        ],
        "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.aena.es/en/adolfo-suarez-madrid-barajas/vip-services/meetassist.html",
            "title": "Meet & Assist | Adolfo Suárez Madrid-Barajas Airport | Aena",
            "favicon": "https://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "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/es/adolfo-suarez-madrid-barajas/conocenos/contacta.html",
            "title": "Contacta | Aeropuerto Adolfo Suárez Madrid-Barajas | Aena",
            "favicon": "http://www.aena.es/publica/assets/images/favico.svg"
          },
          {
            "url": "https://www.aena.es/en/adolfo-suarez-madrid-barajas/airport-services/categories-and-terminals/security.html",
            "title": "Security | 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 is no nonstop service from Denver to Madrid, so all flights connect. The most frequent connecting aircraft are the Airbus A330-300 via Toronto on Air Canada and the Airbus A330 via Chicago on Iberia, along with Boeing 777-200s via Dallas on American Airlines. Other long-haul options include Boeing 767-400s on United via Washington or Newark, Boeing 787 variants on American via Chicago or Philadelphia, Airbus A350s on Lufthansa via Frankfurt and British Airways via London, and an Airbus A321-200neo on JetBlue via Boston.",
        "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": [
          "route_aircraft"
        ]
      },
      "q20": {
        "question": "What are the best airport lounge options when departing from Denver?",
        "answer": "Denver International Airport offers several lounges when departing from Denver, including the American Airlines Admirals Club near Gate C-32, the American Express Centurion Lounge near Gate C-46, the Capital One Lounge (Plaza Premium) near Gate A-34, and the Delta Sky Club on the bridge from Jeppesen Terminal at the north end of Concourse A. United passengers can choose from United Club locations near Gates A-25, B-44, and B-32, with United Club Fly near Gate B-60; the B Gates West United Club is temporarily closed. The USO Denver lounge is located on Level 4 above the mezzanine of Concourse A, and a free Rest and Recharge area is available on the Concourse A mezzanine.",
        "toolsUsed": [
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        ],
        "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"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Denver to Madrid?",
        "answer": "Baggage allowance on Denver–Madrid flights depends on the airline and fare type. Basic economy often does not include a checked bag, while standard international economy usually includes 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 typically offer Economy and flat‑bed Business class, with Premium Economy available on select airlines."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies differ by airline and fare; flexible and premium tickets usually allow same‑day changes or standby, while Basic Economy generally does not."
      }
    }
  }
}