{ "response": { "Key": "LIS-ORD", "orig": { "code": "LIS", "type": "airport", "city": "Lisbon", "fullCity": "Lisbon, Portugal", "airport": "Humberto Delgado Airport" }, "dest": { "code": "ORD", "type": "airport", "city": "Chicago", "fullCity": "Chicago, Illinois", "airport": "O'Hare Intl Airport" }, "faq": { "q0": { "question": "What is the typical flight duration from Lisbon to Chicago?", "answer": "A nonstop flight from Lisbon (LIS) to Chicago (ORD) typically takes about 8 hours 40 minutes to 9 hours 15 minutes. With one stop, depending on the connection city, the total travel time often ranges from 11 to 14 hours. The return flight from Chicago to Lisbon usually takes about 7 hours 30 minutes to 8 hours due to prevailing tailwinds." }, "q1": { "question": "Are there any direct flights from Lisbon to Chicago?", "answer": "Yes, TAP Air Portugal flies non‑stop from Lisbon to Chicago O'Hare with 11 weekly flights, operating Wednesday through Sunday. The service is not daily — there are no flights on Mondays or Tuesdays — and departures are spread across the late morning and early afternoon. TAP is the only airline offering a direct connection on 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. 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 Lisbon to Chicago?", "answer": "Yes, visa requirements depend on your nationality. For Portuguese citizens traveling to Chicago: under the U.S. Visa Waiver Program, you may visit for up to 90 days without a visa, but you must obtain an approved ESTA before departure. For U.S. citizens traveling to Lisbon: no visa is required for stays in the Schengen Area of up to 90 days within any 180-day period. However, from mid-2025, U.S. citizens will need to secure an ETIAS authorization before travel. Non-citizens of either country should check both U.S. and Schengen requirements based on their passport." }, "q3": { "question": "What are the ground transportation options in Chicago?", "answer": "Chicago O'Hare offers taxis, rideshare, rental cars, and public transit. The CTA Blue Line 'L' train connects the airport directly to downtown in about 40–45 minutes and is the most used and economical option. Taxis and rideshares provide door‑to‑door service and are the fastest, especially outside rush hours. Shuttles and regional buses also serve the airport for city and suburban travel.", "toolsUsed": [], "references": [ { "url": "https://flychicago.com/ohare/tofrom/pages/default.aspx", "title": "Getting To and From O'Hare International Airport | Chicago O’Hare International Airport (ORD)", "favicon": "https://flychicago.com/_catalogs/masterpage/favicon.ico" }, { "url": "https://www.flychicago.com/ohare/map", "title": "Map | Chicago O’Hare International Airport (ORD)", "time_published": "2026-05-27T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Transportation_in_Chicago", "title": "Transportation in Chicago", "favicon": "https://en.wikipedia.org/static/apple-touch/wikipedia.png", "time_published": "2026-05-15T02:56:07Z" }, { "url": "https://en.wikipedia.org/wiki/Transportation%20in%20Chicago", "title": "Transportation in Chicago", "time_published": "2026-04-13T06:59:09Z" }, { "url": "https://faa.gov/regulations_policies/orders_notices/index.cfm/go/document.information/documentID/6111", "title": "Order 3330.39 - Chicago/o'hare Airport Traffic Control Tower (ATCT) Staffing PChicago/o'hare Airport Traffic Control Tower (ATCT) Staffing Plan (Cancelled)", "time_published": "2026-04-10T00:00:00Z" } ] }, "q4": { "question": "When is the cheapest time to fly from Lisbon to Chicago?", "answer": "The cheapest months to fly from Lisbon to Chicago are October, November, and April, with average fares around $734, $754, and $757 respectively. The most expensive months are June, July, and May, where average prices climb to $1,210, $1,083, and $1,036.", "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 Chicago?", "answer": "For the best fare from Lisbon to Chicago, book 9 to 11 weeks ahead, when the average price is around $820. The absolute cheapest day is 75 days before departure at $814, while prices rise notably if you book more than 15 weeks out or less than 3 weeks out.", "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 Chicago?", "answer": "No overnight red‑eye flights are scheduled from Lisbon to Chicago — neither nonstop nor connecting itineraries with a red‑eye long leg turned up in the schedule. If you need to fly this route, you'll be looking at daytime or early‑evening departures rather than a late‑night red‑eye.", "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 Chicago?", "answer": "TAP Air Portugal flies nonstop from Lisbon to Chicago with up to 11 weekly flights on Wednesdays through Sundays, and its typical median fare is around $1,681.", "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 Chicago?", "answer": "Common layover cities between Lisbon and Chicago include Madrid, Dublin, London, and New York. Madrid offers broad connections across the Iberian Peninsula and efficient transfers within a single terminal. Dublin enables US preclearance, saving time upon arrival. London provides extensive transatlantic options, and New York serves as a major hub with frequent onward flights to Chicago." }, "q9": { "question": "How reliable are on‑time departures on this route from Lisbon to Chicago?", "answer": "On‑time performance is generally good, though afternoon and evening flights may be more prone to delays. Early departures on TAP Air Portugal often have better punctuality." }, "q10": { "question": "Which months have the best weather for traveling to Chicago?", "answer": "May, June, and September offer pleasant temperatures and fewer tourists than summer." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Lisbon to Chicago?", "answer": "Bring a passport valid for your stay, a valid ESTA or U.S. visa, proof of onward travel, a payment method for baggage, and any required vaccination certificates." }, "q12": { "question": "Which airport should I use in Chicago?", "answer": "O'Hare is Chicago's primary international gateway, located 17 miles northwest of downtown, with extensive global connections as a major hub for United and American Airlines. Midway is closer to the city center, about 10 miles southwest, and mainly serves domestic low-cost carriers like Southwest, ideal for regional travel." }, "q13": { "question": "How do I get to Humberto Delgado Airport from the city center?", "answer": "From downtown Lisbon, the metro’s red line (Vermelha) runs directly to Humberto Delgado Airport and is the fastest and most popular option, taking about 20–25 minutes. The Aerobus shuttle also serves the city center and major hotels, while public buses 705, 722, 744, and 783 offer additional connections. Taxis and ride‑share services are readily available for a door‑to‑door trip; driving is possible but parking at the airport can be expensive and is best reserved in advance.", "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 Chicago airport?", "answer": "Chicago O'Hare does not have an on-site hotel, capsule hotel, or sleeping pods inside the terminals. The closest option is the Hilton Chicago O'Hare Airport, which is connected to the domestic terminals via underground walkways and does not require a shuttle. Several nearby hotels like the SpringHill Suites and Chicago Marriott Suites O'Hare offer complimentary shuttle service from the airport.", "toolsUsed": [], "references": [ { "url": "https://sleepinginairports.net/guides/chicago-ohare-airport-guide.htm", "title": "Chicago O'Hare Airport Guide (ORD) - 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": "2018-08-08T19:18:20Z" }, { "url": "https://www.marriott.com/en-us/hotels/chico-springhill-suites-chicago-ohare/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "Hotel near O'Hare Airport with Free Shuttle | Springhill Suites", "time_published": "2025-02-19T00:00:00Z" }, { "url": "https://www.marriott.com/en-us/hotels/chico-springhill-suites-chicago-ohare/overview/", "title": "Hotel near O'Hare Airport with Free Shuttle | Springhill Suites Chicago O'Hare", "time_published": "2023-08-11T00:00:00Z" }, { "url": "https://www.sleepinginairports.net/sleep-guide/sleeping-in-chicago-ohare-airport.htm", "title": "Sleeping in Chicago O’Hare Airport", "time_published": "2024-09-12T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/O%27Hare%20International%20Airport", "title": "O'Hare International Airport", "time_published": "2026-04-30T12:30:58Z" }, { "url": "https://www.marriott.com/en-us/hotels/chist-chicago-marriott-suites-ohare/overview/?scid=f2ae0541-1279-4f24-b197-a979c79310b0", "title": "Hotels Near O'Hare Airport in Chicago | Chicago Marriott Suites O'Hare Hotel", "time_published": "2023-08-11T00:00:00Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Lisbon to Chicago?", "answer": "The only nonstop service between Lisbon and Chicago is on TAP Air Portugal, which typically flies the Airbus A330-900neo on this route. For connecting itineraries, common long-haul aircraft include the Boeing 787-10 (via Newark, Frankfurt, or London), the Boeing 777-300ER (via Toronto or Zurich), and the Airbus A330-300 (via Montreal, Madrid, or Dublin), with short-haul feeder legs on Embraer 175s, Airbus A320-family jets, or Boeing 757s. The exact aircraft can vary by day and airline, and Wi-Fi and seatback entertainment are widely available across these carriers.", "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 Chicago?", "answer": "TAP Air Portugal, a Star Alliance member, is the only airline operating nonstop from Lisbon to Chicago. Other alliances may serve the route via connections, but no specific connecting carriers appear 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 main lounge is the ANA Lounge Lisbon in Terminal 1, accessible after security and passport control near Gate 22 on Floor 6. It’s open daily from 04:00 to 23:00 and accepts Priority Pass, with complimentary standard alcoholic drinks (up to three) and a smoking room. Business class passengers on TAP Air Portugal and other partner airlines, as well as elite status holders, can access it, while others may purchase a day pass. Note that the Business Center inside the lounge is subject to an additional fee.", "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 Chicago?", "answer": "On Lisbon–Chicago flights, Basic Economy may exclude checked bags. Standard international economy usually includes one checked bag and a carry‑on, while premium cabins allow two checked bags and larger carry‑ons." }, "q22": { "question": "What cabin and seat options are typical from Lisbon to Chicago?", "answer": "Flights from Lisbon to Chicago usually offer Economy, Premium Economy (on many carriers), and flat-bed Business class; First class is generally not available on this route." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies vary by airline and fare class; flexible and premium cabin tickets typically allow same‑day changes or standby, while basic economy fares generally do not." } } } }