{ "response": { "Key": "DTT-LIS", "orig": { "code": "DTT", "type": "airport", "city": "Detroit", "fullCity": "Detroit, Michigan", "airport": "Detroit Metro Airport" }, "dest": { "code": "LIS", "type": "airport", "city": "Lisbon", "fullCity": "Lisbon, Portugal", "airport": "Humberto Delgado Airport" }, "faq": { "q0": { "question": "What is the typical flight duration from Detroit to Lisbon?", "answer": "There are no nonstop flights from Detroit (DTW) to Lisbon (LIS). With one stop, the most common layover is in a European hub like Amsterdam, Paris, or London, resulting in a total travel time of roughly 10 to 13 hours. The return flight from Lisbon to Detroit often takes a similar duration, though eastbound flights may be slightly shorter due to prevailing winds." }, "q1": { "question": "Are there any direct flights from Detroit to Lisbon?", "answer": "There are no non‑stop flights from Detroit to Lisbon. The shortest one‑stop routings take about 10 to 11 hours total and typically connect through the US East Coast (Boston, Philadelphia, or Washington Dulles) or major European hubs like Amsterdam, Paris, or Lisbon itself on the return leg.", "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. 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_airlines", "flight_schedule", "route_aircraft" ] }, "q2": { "question": "Are there visa requirements to travel from Detroit to Lisbon?", "answer": "Yes, there are travel-authorization requirements for a flight from Detroit to Lisbon, depending on your citizenship. If you are a U.S. citizen, you can enter Portugal for short stays (up to 90 days within any 180-day period) without a visa for tourism or business, but you must ensure your passport is valid for at least three months beyond your planned departure from the Schengen area. Starting in 2025, U.S. citizens will also need to obtain an ETIAS travel authorization before traveling to Portugal. If you are a Portuguese or other non-U.S. national, whether you need a visa depends on your nationality; many non-U.S. citizens require a Schengen visa. For the return from Lisbon to Detroit, if you are a national of a Visa Waiver Program country (including Portugal), you can travel to the U.S. for short visits without a visa but must have an approved ESTA." }, "q3": { "question": "What are the ground transportation options in Lisbon?", "answer": "From Lisbon Airport, you can reach the city center by taxi, Aerobus shuttle, public bus, or rental car; there is no direct train from the terminal, but nearby metro stations are a short taxi ride away. The Aerobus (Lines 1 and 2) is the most popular choice, offering frequent service every 20–25 minutes for about €4 and reaching the center in 20–40 minutes. Public buses are the cheapest option, with several lines serving the airport. Taxis are readily available at arrivals and departures, though you should confirm the fare and expect a surcharge. Car rentals are also available for onward travel.", "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)" } ] }, "q4": { "question": "When is the cheapest time to fly from Detroit to Lisbon?", "answer": "The cheapest months to fly from Detroit to Lisbon are October (average $839) and November (average $840), followed by April (average $875). The most expensive months are June (average $1188) and July (average $1184), with May also high at $1085.", "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 Detroit to Lisbon?", "answer": "For flights from Detroit to Lisbon, the best time to book is roughly 2 to 5 weeks before departure, when average fares are around $927. Outside that window, prices tend to rise, especially more than 15 weeks out; while the data doesn't break out summer or holiday periods, booking very early (4+ months ahead) typically costs more.", "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 Detroit to Lisbon?", "answer": "No nonstop red-eye flights operate from Detroit to Lisbon, but connecting itineraries whose long leg is an overnight flight are available. From Detroit itself, Air France red-eyes via Paris (CDG) depart around 9:20 PM and arrive at 11:05 AM, while Delta red-eyes via Paris or Amsterdam (AMS) depart as early as 4:40 PM and as late as 6:45 PM, arriving between 6:00 AM and 8:40 AM. Other one-stop options connect through East Coast hubs: TAP Air Portugal via Boston departs Boston at 10:20 PM and arrives Lisbon at 9:45 AM, American Airlines via Philadelphia departs at 9:05 PM and arrives at 9:05 AM, and United via Washington Dulles departs at 10:25 PM and arrives at 10:30 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" ] }, "q8": { "question": "If I need a connection, what are common layover cities between Detroit and Lisbon?", "answer": "Common one-stop hubs include Newark, Boston, and Philadelphia, which offer frequent connections and efficient transfers for a competitive total travel time." }, "q9": { "question": "How reliable are on‑time departures on this route from Detroit to Lisbon?", "answer": "On-time performance is generally reliable, though afternoon and evening flights face higher delay risks due to cascading network issues. Morning departures on Delta, the main operator, offer the best odds for punctuality." }, "q10": { "question": "Which months have the best weather for traveling to Lisbon?", "answer": "May to June and September to early October offer warm, sunny days and fewer tourists than peak summer." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Detroit to Lisbon?", "answer": "You need a passport valid for at least three months beyond your planned departure from Portugal, any required visa or ETIAS authorization once implemented, proof of onward or return travel, and a payment method for bags. Vaccination certificates are not currently required but check for updates." }, "q12": { "question": "Which airport should I use in Lisbon?", "answer": "Lisbon has only one commercial airport, Humberto Delgado Airport, which is located just 7 km from the city centre and serves all flights to the region." }, "q13": { "question": "How do I get to Detroit Metro Airport from the city center?", "answer": "From downtown Detroit, the Detroit Air Xpress (DAX) bus provides a direct shuttle to both airport terminals with fares around $6–8, making it a popular and affordable choice. Ride‑share services and taxis are readily available and offer a faster door‑to‑door trip, though at a higher cost. SMART’s FAST Route 261 also connects downtown to the airport with frequent, limited‑stop service. Driving and parking on‑site is an option, but it’s generally the most expensive once long‑term fees are factored in.", "toolsUsed": [], "references": [ { "url": "https://metroairport.com/dtw/other-ground-transportation/public-transportation", "title": "Public Transportation | Wayne County Airport Authority", "favicon": "https://metroairport.com/themes/custom/wcaa/images/favicons/apple-touch-icon.png" }, { "url": "https://metroairport.com/about-dtw", "title": "About DTW | Wayne County Airport Authority", "favicon": "https://metroairport.com/themes/custom/wcaa/images/favicons/apple-touch-icon.png", "time_published": "2026-04-13T12:00:00Z" }, { "url": "https://www.faa.gov/air_traffic/publications/atpubs/ntap_feb_18/EC10000.html", "title": "Michigan. Detroit Metropolitan Wayne County Airport (DTW) Standard Taxi Routes", "time_published": "2018-02-01T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Detroit%20Metropolitan%20Airport", "title": "Detroit Metropolitan Airport", "time_published": "2026-04-30T20:15:38Z" }, { "url": "https://www.faa.gov/air_traffic/publications/atpubs/ntap_aug_18/EC10000.html", "title": "Michigan. Detroit Metropolitan Wayne County Airport (DTW) Standard Taxi Routes" } ] }, "q16": { "question": "Are there accessible services or children's facilities at the Detroit and Lisbon airports?", "answer": "At Detroit Metro Airport (DTW), wheelchair assistance is arranged through your airline at the ticket counter, and accessible features include braille signage, hearing loops, family restrooms, and a sensory-friendly tunnel with a pause button. For Lisbon Portela Airport (LIS), accessibility services are not detailed in the available data, but as a major European hub it generally offers assistance through airlines or the airport's special assistance service when requested at least 48 hours in advance; children's play areas are not mentioned for either airport.", "toolsUsed": [], "references": [ { "url": "https://metroairport.com/at-dtw/getting-around/accessibility-additional-assistance", "title": "Accessibility & Additional Assistance | Wayne County Airport Authority", "favicon": "https://metroairport.com/themes/custom/wcaa/images/favicons/apple-touch-icon.png" }, { "url": "https://metroairport.com/about-us/contact-us", "title": "Contact Us | Wayne County Airport Authority", "favicon": "https://metroairport.com/themes/custom/wcaa/images/favicons/apple-touch-icon.png" }, { "url": "https://www.faa.gov/air_traffic/publications/atpubs/ntap_feb_18/EC10000.html", "title": "Michigan. Detroit Metropolitan Wayne County Airport (DTW) Standard Taxi Routes", "time_published": "2018-02-01T00:00:00Z" }, { "url": "https://www.faa.gov/air_traffic/publications/atpubs/ntap_aug_18/EC10000.html", "title": "Michigan. Detroit Metropolitan Wayne County Airport (DTW) Standard Taxi Routes" }, { "url": "https://en.wikipedia.org/wiki/Detroit%20Metropolitan%20Airport", "title": "Detroit Metropolitan Airport", "time_published": "2026-04-30T20:15:38Z" }, { "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_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://www.lisbon-airport.net/", "title": "Lisbon Airport (LIS)" }, { "url": "https://lisbonairport.net", "title": "Lisbon Airport | Guide to Lisbon Airport (LIS)" }, { "url": "https://en.wikipedia.org/wiki/Lisbon%20Airport", "title": "Lisbon Airport", "time_published": "2026-04-30T23:41:16Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Detroit to Lisbon?", "answer": "There is no nonstop service between Detroit and Lisbon. On connecting itineraries, the long-haul leg is most often operated by a Boeing 787-9 (via Philadelphia on American, or Istanbul on Turkish), an Airbus A330-900neo (via Boston on TAP, or via Amsterdam and Paris on Delta), or an Airbus A330-300 (via Paris or Amsterdam on Delta). The exact aircraft can vary by day and airline, and Wi‑Fi and seatback entertainment are widely available on these long-haul types.", "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" ] }, "q20": { "question": "What are the best airport lounge options when departing from Detroit?", "answer": "Detroit Metropolitan Airport (DTW) offers several lounge options. In the McNamara Terminal, Delta operates five Sky Clubs: at Gates A43, A18, A38, A68, and one in Concourse C, accessible to Delta One passengers, SkyTeam Elite Plus members, and those with qualifying credit cards or day passes, featuring complimentary snacks, drinks, and Wi-Fi. The Warren C. Evans Terminal houses a Lufthansa Business Lounge near Gate D8, open daily in two windows (6:00 AM–12:00 PM and 5:00 PM–8:00 PM), granting access to business-class travelers, Star Alliance Gold members, and Priority Pass holders, with a restaurant voucher, showers, and a quiet workspace.", "toolsUsed": [], "references": [ { "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/DTW", "title": "American Express Lounges at Detroit Metropolitan Wayne County Airport | Amex US", "time_published": "2026-05-03T00:00:00Z" }, { "url": "https://americanexpress.com/en-th/travel/lounges/the-platinum-card/DTW", "title": "American Express Lounges at Detroit Metropolitan Wayne County Airport | Amex TH", "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png" }, { "url": "https://my.prioritypass.com/en-GB/lounges/united-states-of-america/detroit-metropolitan-wayne-county/dtw8-minute-suites", "title": "Detroit Metropolitan Airport DTW Lounges - DTW Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://my.prioritypass.com:443/en-GB/lounges/united-states-of-america/detroit-metropolitan-wayne-county/dtw5-lufthansa-business-lounge", "title": "Lufthansa Business Lounge DTW AIRPORT Warren C. Evans Terminal Detroit MI Metropolitan Wayne County | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://www.delta.com/us/en/airports/united-states/detroit-sky-club-airport-map", "title": "Detroit Metro (DTW) Airport Map & Lounges | Delta Air Lines", "time_published": "2023-01-01T00:00:00Z" } ] }, "q21": { "question": "What is the baggage allowance on this route from Detroit to Lisbon?", "answer": "On Detroit–Lisbon flights, baggage allowance depends on the airline and fare class. Basic economy often excludes a checked bag, while standard international economy usually includes one free checked bag and a carry-on. Premium cabins offer more generous allowances." }, "q22": { "question": "What cabin and seat options are typical from Detroit to Lisbon?", "answer": "Flights from Detroit to Lisbon usually offer Economy and flat‑bed Business class; Premium Economy is available on select itineraries." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary by airline and fare; flexible and premium cabin tickets usually permit same‑day changes or standby, while basic economy tickets typically do not." } } } }