{"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": {"q3": {"question": "What are the ground transportation options in Lisbon?", "answer": "From Lisbon Airport, the most used and fastest option into the city center is the Aerobus shuttle, which runs every 20–25 minutes, takes about 20–40 minutes depending on the line, and costs €4 for a 24-hour pass. Public city buses are cheaper but slower, while taxis are available at ranks outside arrivals with a metered fare plus an airport surcharge. There is no direct train from the airport, but nearby metro stations like Gare do Oriente are a short taxi ride away and connect to the city’s four metro lines. Ride-share services operate in Lisbon, and car rentals are available at the airport, though driving and parking in the city center can be challenging.", "toolsUsed": ["article_lookup"], "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 and November, when average fares drop to around $839 and $845, while April and February also offer low-season pricing. The most expensive period is summer, with July averaging $1,202 and June $1,188, though late spring also sees elevated fares in May around $1,085.", "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 optimal booking window is 3 to 6 weeks before departure, when average fares are around $941. Booking too far in advance—more than 100 days out—tends to be pricier, with fares climbing toward $1,000, while last-minute deals can sometimes dip even lower, though they're riskier. For peak summer or holiday travel, it's wise to book on the earlier side of this window or slightly before, as prices are less likely to drop close to departure.", "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-eyes operate from Detroit to Lisbon, but connecting itineraries whose long leg is an overnight flight are available. For example, TAP Air Portugal offers a red-eye from Boston departing at 22:45 and arriving in Lisbon at 10:20 the next morning, with a JetBlue connection to Detroit; American runs a Philadelphia–Lisbon red-eye leaving at 21:05 and arriving at 09:05; and United operates an overnight leg from Washington Dulles departing at 22:25 and landing at 10:30.", "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 Detroit to Lisbon?", "answer": "There is no nonstop service from Detroit to Lisbon. Common one-stop routings include TAP Air Portugal via Boston, American Airlines via Philadelphia, and Turkish Airlines via Istanbul, with TAP via Boston offering the most frequent connecting itinerary at about eight daily departures. Other connecting carriers on this route include Air Canada via Toronto and United via Washington Dulles. Specific per-carrier fare data is not available for this route.", "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 Detroit and Lisbon?", "answer": "Common layover cities include New York (JFK), Boston, Amsterdam, and Paris. New York and Boston offer numerous daily flights from Detroit and competitive onward connections to Lisbon. Amsterdam and Paris provide efficient single-connection itineraries with broad European networks, often keeping total travel time around 10 to 13 hours. All these hubs have streamlined transfer processes for international passengers."}, "q10": {"question": "Which months have the best weather for traveling to Lisbon?", "answer": "May to June and September to October offer warm, sunny weather with fewer tourists than the busy summer months."}, "q11": {"question": "What documents should I bring with me to the airport when flying from Detroit to Lisbon?", "answer": "Bring a passport valid for at least three months beyond your stay, a visa or ETIAS authorization if required, proof of onward travel, a payment method for baggage, and any vaccination or health documents."}, "q12": {"question": "Which airport should I use in Lisbon?", "answer": "Lisbon has only one commercial airport, Humberto Delgado Airport, located about 7 km from the city centre. It serves as the primary gateway for all airlines, including TAP Air Portugal and low‑cost carriers like Ryanair and easyJet."}, "q13": {"question": "How do I get to Detroit Metro Airport from the city center?", "answer": "Detroit Metropolitan Airport (DTW) is about 18 miles southwest of downtown Detroit. The fastest public transit option is the Detroit Air Xpress (DAX) bus, which runs frequently from 3:30 a.m. to 11 p.m. daily and takes you directly to both terminals; tickets are $8 at the door or $6 in advance. SMART bus routes 125, 261, and 280 also serve the airport from downtown and suburbs, but they take longer and make more stops. Ride‑share services and taxis are readily available and offer a door‑to‑terminal trip in about 25–35 minutes, though they cost more than the bus. If you drive, on‑site parking is available at both the Evans and McNamara terminals, with rates that increase the closer you park to the terminal.", "toolsUsed": ["article_lookup"], "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"}]}, "q14": {"question": "Are there hotels or sleeping facilities at Lisbon airport?", "answer": "Lisbon Airport (LIS) does not have on-site hotels, capsule hotels, or sleeping pods inside the terminals, though Terminal 1 offers some benches and couches for resting. There are several hotels nearby connected by shuttle, such as the Meliá Lisboa Aeroporto, which is just a short walk from the terminal, and the TRYP Lisboa Aeroporto Hotel, which provides a free shuttle service. For a wider selection, the Star Inn Lisbon Airport and the Holiday Inn Lisbon-Continental are also easily reachable via shuttle.", "toolsUsed": ["article_lookup"], "references": [{"url": "https://www.sleepinginairports.net/guides/lisbon-airport-guide.htm", "title": "Lisbon Airport Guide (LIS) - 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": "2018-09-02T00:00:05Z"}, {"url": "https://www.sleepinginairports.net/hotels/lisbon-airport-hotels.htm", "title": "Lisbon Airport Guide (LIS) - Sleeping in Airports", "time_published": "2026-04-13T18:11:40Z"}, {"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_facilities.html", "title": "Lisbon Portela Airport (LIS) Facilities, Info: Services at Airports in Lisbon Area, Portugal", "time_published": "2016-03-03T00:00:00Z"}, {"url": "https://en.wikipedia.org/wiki/Lisbon_Airport", "title": "Lisbon Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-07-20T16:51:21Z"}, {"url": "https://en.wikipedia.org/wiki/Lisbon%20Airport", "title": "Lisbon Airport", "time_published": "2026-04-30T23:41:16Z"}]}, "q15": {"question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Humberto Delgado Airport?", "answer": "Humberto Delgado Airport (LIS) has currency exchange offices in the public and transit areas of Terminal 1, including several ATMs that dispense euros. There is a multi-faith prayer room (oratório) located in Terminal 1, near the departures area after security, open to all passengers. Free Wi‑Fi is available throughout the terminal; connect to the “VINCI Airports wifi” network and follow the on-screen registration.", "toolsUsed": ["article_lookup"], "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_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://en.wikipedia.org/wiki/Lisbon_Airport", "title": "Lisbon Airport", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-07-20T16:51:21Z"}, {"url": "https://www.lisbon-airport.net/", "title": "Lisbon Airport (LIS)"}, {"url": "https://lisbonairport.net", "title": "Lisbon Airport | Guide to Lisbon Airport (LIS)"}]}, "q17": {"question": "What aircraft are typically used on flights from Detroit to Lisbon?", "answer": "Detroit to Lisbon has no nonstop service, so travelers connect through a hub. On the long transatlantic leg, the most common aircraft are the Boeing 787-9 (especially via Philadelphia or Istanbul), the Airbus A321-200 Neo (via Boston), and the Boeing 777-300ER (via Toronto); Airbus A330 variants also appear via Florida gateways. The exact aircraft can vary by day and airline, and on these international flights Wi‑Fi and seatback entertainment are widely available.", "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": "Departing from Detroit Metropolitan Wayne County Airport (DTW), the best lounge options are concentrated in the McNamara Terminal, where Delta operates five Sky Clubs — near gates A18, A38, A43, A68, and one in Concourse C — accessible to Delta One, SkyTeam premium cabin passengers, and Delta Sky Club members, with day passes available for eligible cardholders. In the Evans Terminal, the Lufthansa Business Lounge near gate D8 offers a quieter space with a restaurant voucher and spa access, open to Lufthansa business class, Star Alliance Gold, and Priority Pass members during limited morning and evening hours. Note that no Priority Pass lounge is available in the McNamara Terminal, so travelers flying from A or C gates should plan on the Delta Sky Clubs or the Lufthansa lounge if they can access the Evans Terminal airside.", "toolsUsed": ["article_lookup"], "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": "Baggage rules depend on the airline and fare type. Basic economy is restrictive and may not include a checked bag, while standard international economy tickets typically allow 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": "Typical Detroit to Lisbon flights 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 depend on the airline and fare class; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy typically does not."}}}}