{
  "response": {
    "Key": "LIS-DFW",
    "orig": {
      "code": "LIS",
      "type": "airport",
      "city": "Lisbon",
      "fullCity": "Lisbon, Portugal",
      "airport": "Humberto Delgado Airport"
    },
    "dest": {
      "code": "DFW",
      "type": "airport",
      "city": "Dallas",
      "fullCity": "Dallas, Texas",
      "airport": "Dallas Fort Worth Intl Airport"
    },
    "faq": {
      "q0": {
        "question": "What is the typical flight duration from Lisbon to Dallas?",
        "answer": "A nonstop flight from Lisbon (LIS) to Dallas (DFW) typically takes about 10 hours 30 minutes to 10 hours 50 minutes westbound, while the return flight eastbound is usually shorter at around 9 hours 15 minutes to 9 hours 30 minutes due to prevailing winds. With a layover, common connecting cities like Madrid or London extend total travel time to between 13 and 15 hours."
      },
      "q2": {
        "question": "Are there visa requirements to travel from Lisbon to Dallas?",
        "answer": "Yes, there are visa requirements for travel from Lisbon to Dallas depending on your nationality. If you are a U.S. citizen, you do not need a visa to enter the United States. If you are a Portuguese citizen, you may travel to the U.S. for short visits without a visa under the Visa Waiver Program, but you must obtain ESTA authorization in advance. For travel from Dallas back to Lisbon: if you are a U.S. citizen, you do not need a visa for short stays in Portugal and the Schengen Area (up to 90 days). If you are a Portuguese or other EU/EEA national, you do not need a visa to enter Portugal. Nationals of other countries should check specific visa requirements for both the U.S. and Schengen Area."
      },
      "q3": {
        "question": "What are the ground transportation options in Dallas?",
        "answer": "At Dallas/Fort Worth International Airport (DFW), ride‑share, taxis, rental cars, and public transit are all available directly from the terminals. The DART Orange Line light rail from Terminal A provides the most‑used and fastest link to downtown Dallas in about 50 minutes, while the new Silver Line and TEXRail offer quicker northern and Fort Worth connections. Taxis and ride‑shares are plentiful and more direct, though they cost significantly more and can be slowed by highway traffic. Rental cars are a strong option for exploring the wider Metroplex, with all major agencies on‑site. For most visitors heading to central Dallas, the DART train is the practical, high‑frequency choice.",
        "toolsUsed": [],
        "references": [
          {
            "url": "http://dfwairport.com/dfwnewsroom/dfw-is-ready-to-welcome-fifa-fans/",
            "title": "DFW International Airport | Official Website",
            "time_published": "2026-04-02T00:00:00Z"
          },
          {
            "url": "https://www.dfwairport.com/explore/transportation/publictransit/?utm_source=google&utm_medium=organic",
            "title": "DFW International Airport | Public Transit",
            "time_published": "2022-05-25T00:00:00Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/CentrePort%2FDFW%20Airport%20station",
            "title": "CentrePort/DFW Airport station",
            "time_published": "2025-12-07T14:04:09Z"
          },
          {
            "url": "https://en.wikipedia.org/wiki/CentrePort/DFW_Airport_station",
            "title": "CentrePort/DFW Airport station",
            "time_published": "2026-05-10T08:51:35Z"
          },
          {
            "url": "https://faa.gov/air_traffic/publications/atpubs/ntap_jan_31/SC17000.html",
            "title": "Texas. Prototype Runway Status Lights (RWSL) at Dallas/Fort Worth International Airport (DFW)",
            "favicon": "https://faa.gov/air_traffic/publications/atpubs/ntap_jan_31/assets/img/apple-touch-icon.png"
          }
        ]
      },
      "q4": {
        "question": "When is the cheapest time to fly from Lisbon to Dallas?",
        "answer": "The cheapest months to fly from Lisbon to Dallas are November (around $804), April ($805), and October ($828), while the most expensive are June and July (both around $1,050) and May ($989).",
        "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. For this route, fares for the requested travel direction were unavailable, so the pattern shown is derived from the reverse direction, which shares the same seasonal demand cycle.",
        "toolsUsed": [
          "seasonal_prices"
        ]
      },
      "q5": {
        "question": "How far in advance should I book tickets from Lisbon to Dallas?",
        "answer": "For flights from Lisbon to Dallas, the best fares are typically found when booking 9 to 11 weeks before departure, with average prices around $852 during that window. Last-minute deals can occasionally dip as low as $835 about 5 days out, but prices tend to rise sharply beyond 11 weeks, especially for summer and holiday travel when booking further ahead is advisable.",
        "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. For this route, fares for the requested travel direction were unavailable, so the pattern shown is derived from the reverse direction, which shares the same seasonal demand cycle.",
        "toolsUsed": [
          "booking_timing"
        ]
      },
      "q6": {
        "question": "Are overnight (red‑eye) flights available from Lisbon to Dallas?",
        "answer": "No overnight (red-eye) flights are available from Lisbon to Dallas — neither nonstop nor connecting itineraries with a red-eye long leg operate on this route.",
        "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 Lisbon to Dallas?",
        "answer": "There is no nonstop service from Lisbon to Dallas. Common one‑stop routings include Iberia via Madrid (around 16 daily connections on the search date), United via Newark and Washington Dulles, American via Madrid, Philadelphia, and London Heathrow, British Airways via London Heathrow, and Air Canada via Montreal and Toronto. Frequencies vary by carrier and day, with Iberia’s Madrid connection being the most frequent option. No per‑carrier fare data is available for these connecting itineraries.",
        "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 Lisbon and Dallas?",
        "answer": "Common layover hubs for the Lisbon to Dallas route include Madrid, London, and New York, which keep total travel times competitive. Madrid offers frequent connections and a short first leg, while London provides extensive onward flights. New York allows for pre-clearance or efficient transfers before the final domestic leg to Dallas."
      },
      "q9": {
        "question": "How reliable are on‑time departures on this route from Lisbon to Dallas?",
        "answer": "On‑time performance is generally fair, though afternoon departures can encounter delays. Early flights, particularly on American Airlines, tend to be more reliable."
      },
      "q10": {
        "question": "Which months have the best weather for traveling to Dallas?",
        "answer": "March to May and October to November offer pleasant temperatures and fewer tourists."
      },
      "q11": {
        "question": "What documents should I bring with me to the airport when flying from Lisbon to Dallas?",
        "answer": "Bring a passport valid for at least six months beyond your stay, a valid U.S. visa or ESTA authorization, proof of onward or return travel, a payment method for baggage, and any required vaccination certificates."
      },
      "q12": {
        "question": "Which airport should I use in Dallas?",
        "answer": "Dallas/Fort Worth International is the primary gateway, serving most international and domestic carriers with extensive connections. Dallas Love Field is closer to downtown and mainly handles Southwest Airlines domestic flights."
      },
      "q13": {
        "question": "How do I get to Humberto Delgado Airport from the city center?",
        "answer": "The fastest and most popular way to reach Humberto Delgado Airport from downtown Lisbon is the Aerobus shuttle, which offers two direct routes to the city center in 20–40 minutes with frequent departures. Public buses are the cheapest option, with several lines serving the airport, while taxis and ride‑shares provide door‑to‑door convenience at a higher cost. There is no direct train connection, but nearby metro stations can be reached by taxi. Driving and parking are available, though not typically recommended for short trips given the airport’s proximity to the city.",
        "toolsUsed": [],
        "references": [
          {
            "url": "http://lisbon-lis.airports-guides.com",
            "title": "Lisbon Portela Airport (LIS) Information: LIS Airport in Lisbon Area, Portugal"
          },
          {
            "url": "http://www.lisbon-lis.airports-guides.com/lis_airport_transport.html",
            "title": "Lisbon Portela Airport (LIS) Travel, Transport: Travel at Airports in Lisbon Area, Portugal",
            "time_published": "2016-03-03T00:00:00Z"
          },
          {
            "url": "https://www.lisbon-airport.net/",
            "title": "Lisbon Airport (LIS)"
          },
          {
            "url": "https://lisbonairport.net/lisbon-airport-transfers/bus/",
            "title": "Getting to Lisbon Airport by Bus",
            "time_published": "2019-03-02T00:00:00Z"
          },
          {
            "url": "https://lisbonairport.net",
            "title": "Lisbon Airport | Guide to Lisbon Airport (LIS)"
          }
        ]
      },
      "q14": {
        "question": "Are there hotels or sleeping facilities at Dallas airport?",
        "answer": "Dallas/Fort Worth International Airport has a Grand Hyatt hotel inside Terminal D, accessible via SkyLink train from any terminal without needing a shuttle, and Minute Suites with daybeds in Terminals A and D (the D location offers showers). Several nearby hotels like the DFW Airport Marriott and The Westin provide complimentary shuttle service.",
        "toolsUsed": [],
        "references": [
          {
            "url": "https://www.sleepinginairports.net/guides/dallas-fort-worth-airport-guide.htm",
            "title": "Dallas - Fort Worth Airport Guide (DFW) - 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": "2018-10-02T00:00:31Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/dfwap-dallas-fort-worth-airport-marriott/overview/",
            "title": "Dallas/Fort Worth Airport Marriott - Near DFW International Airport",
            "time_published": "2025-02-19T00:00:00Z"
          },
          {
            "url": "https://www.sleepinginairports.net/sleep-guide/sleeping-in-dallas-fort-worth-airport.htm",
            "title": "Sleeping in Dallas Fort Worth Airport",
            "time_published": "2024-10-05T00:00:00Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/dfwwa-the-westin-dallas-fort-worth-airport/overview/?EM=DNM_WESTINDALLASFORTWORTHAIRPORT.COM",
            "title": "Hotel Near DFW Airport with Shuttle Service | The Westin",
            "time_published": "2025-02-19T00:00:00Z"
          },
          {
            "url": "http://www.dfwairport.com/explore/plan/hotels/",
            "title": "Where to Stay Near the Airport | DFW Airport",
            "time_published": "2025-12-15T00:00:00Z"
          },
          {
            "url": "https://www.marriott.com/en-us/hotels/dfwel-element-dallas-fort-worth-airport-north/overview/?EM=DNM_ELEMENTDFWNORTH.COM",
            "title": "Dallas Fort Worth Airport Hotel | Element Dallas Fort Worth Airport",
            "time_published": "2025-02-19T00:00:00Z"
          }
        ]
      },
      "q17": {
        "question": "What aircraft are typically used on flights from Lisbon to Dallas?",
        "answer": "There is no nonstop service between Lisbon and Dallas. On typical one-stop connections, the long-haul leg is most often operated by Boeing 777-200s, 787-10s, 777-300ERs, or Airbus A330s (including A330-300s), with Madrid, Newark, and London Heathrow as common connecting points. The shorter connecting legs use a mix of Airbus A320-family and Boeing 737-family aircraft. Wi‑Fi and seatback entertainment are widely available on these long-haul types, though the exact aircraft can vary by day and airline.",
        "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 Lisbon to Dallas?",
        "answer": "The one-stop itineraries from Lisbon to Dallas are operated by oneworld carriers Iberia, American Airlines, and British Airways, and by Star Alliance carriers United Airlines, Air Canada, and TAP Air Portugal — so both oneworld and Star Alliance serve the route. No major unaligned airline appears in the schedule.",
        "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 Lisbon?",
        "answer": "At Lisbon Portela Airport, the primary lounge is the ANA Lounge Lisbon, located in Terminal 1 after passport control near Gate 22 on Floor 6, accessible to both Schengen and non-Schengen passengers. It is part of the Priority Pass network and also accepts eligible business-class, first-class, and elite-status travelers on Star Alliance and other partner airlines. The lounge features complimentary alcoholic drinks (up to three per guest), a smoking room, air conditioning, and a business center available for a fee. It operates daily from 4:00 AM to 11:00 PM, and children under two are admitted free.",
        "toolsUsed": [],
        "references": [
          {
            "url": "http://lisbon-lis.airports-guides.com",
            "title": "Lisbon Portela Airport (LIS) Information: LIS Airport in Lisbon Area, Portugal"
          },
          {
            "url": "https://my.prioritypass.com/en-GB/lounges/portugal/lisbon-portela",
            "title": "Lisbon Airport LIS Lounges - LIS Airport Guide and lounges.  | Priority Pass",
            "time_published": "2024-11-05T00:00:00Z"
          },
          {
            "url": "https://prioritypass.com/en-GB/lounges/portugal/lisbon-portela/lis6-ana-lounge-lisbon",
            "title": "ANA Lounge Lisbon LIS AIRPORT Terminal 1 Lisbon Portela | Priority Pass",
            "time_published": "2024-11-05T00:00:00Z"
          },
          {
            "url": "http://www.lisbon-lis.airports-guides.com/lis_airport_airlines.html",
            "title": "Lisbon Portela Airport (LIS) Airlines and Terminals: Airlines at Airports in Lisbon Area, Portugal",
            "time_published": "2016-03-03T00:00:00Z"
          },
          {
            "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/LIS",
            "title": "American Express Lounges at Lisbon Portela Airport | Amex US",
            "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png"
          }
        ]
      },
      "q21": {
        "question": "What is the baggage allowance on this route from Lisbon to Dallas?",
        "answer": "On Lisbon–Dallas flights, baggage rules depend on the airline and fare type. Basic economy often excludes a free checked bag but includes a carry-on. Standard economy usually allows one checked bag and a carry-on, while premium cabins offer more."
      },
      "q22": {
        "question": "What cabin and seat options are typical from Lisbon to Dallas?",
        "answer": "Flights from Lisbon to Dallas typically offer Economy, Premium Economy, and flat-bed Business class on most carriers."
      },
      "q23": {
        "question": "Are same‑day changes or standby possible on this route?",
        "answer": "Policies differ; flexible and premium tickets generally allow same‑day changes or standby, while Basic Economy typically does not."
      }
    }
  }
}