{ "response": { "Key": "BOS-LIS", "orig": { "code": "BOS", "type": "airport", "city": "Boston", "fullCity": "Boston, Massachusetts", "airport": "Logan Intl 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 Boston to Lisbon?", "answer": "A nonstop flight from Boston (BOS) to Lisbon (LIS) typically takes about 6 hours 15 minutes. With one stop, depending on the layover city, total travel time often ranges from 8 to 10 hours. The return flight is slightly longer, usually around 7 hours 15 minutes nonstop." }, "q1": { "question": "Are there any direct flights from Boston to Lisbon?", "answer": "Yes, TAP Air Portugal and Delta both fly nonstop from Boston to Lisbon, each operating daily. Together they offer up to 65 weekly flights, with TAP running 37 and Delta 28, spread across morning, afternoon, and evening departures.", "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 Boston to Lisbon?", "answer": "Yes, there are travel-authorization requirements for a flight from Boston to Lisbon, depending on your citizenship. If you are a U.S. citizen, you do not need a visa for short stays (up to 90 days in any 180-day period) in Portugal, as it is part of the Schengen Area. However, starting in mid-2025, you will need to obtain an ETIAS authorization before travel. If you are a Portuguese or other non-U.S. national, whether you need a visa depends on your nationality. For the return from Lisbon to Boston, if you are a citizen of a Visa Waiver Program country, 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, the Aerobus shuttle is the most popular and direct option to the city center, with two lines running every 20–25 minutes; a 24-hour pass costs €4. Taxis are readily available at ranks outside arrivals, taking about 15–20 minutes to downtown, though you should confirm the fare and expect a small airport surcharge. Public city buses (routes 5, 22, 44, 45, 83) are the cheapest choice but can be slower. There is no direct train from the airport, but a short taxi ride to Gare do Oriente or Parque das Nações connects you to the Lisbon Metro. Ride-share services like Uber and Bolt also operate, and car rentals are available, though driving in central Lisbon is not recommended due to traffic and narrow streets.", "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 Boston to Lisbon?", "answer": "The cheapest months to fly from Boston to Lisbon are October, November, and September, with average round-trip fares dropping to $673, $675, and $722 respectively. The most expensive months are June, May, and July, where average prices climb to $986, $929, and $903.", "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 Boston to Lisbon?", "answer": "For flights from Boston to Lisbon, the best fares are generally found when booking 6 to 9 weeks ahead, with the absolute lowest price around $821 about 55 days before departure. During summer and holiday periods, demand pushes prices higher, so aiming for the earlier end of that window or even a bit further out can help avoid steep last-minute increases.", "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 Boston to Lisbon?", "answer": "Red‑eye flights are available nonstop from Boston to Lisbon. Delta and TAP Air Portugal operate overnight departures, with Delta offering late‑evening flights around 8:35 PM to 11:25 PM and TAP departing between about 10:10 PM and 11:10 PM. These flights land in Lisbon the next morning, typically arriving in the early to mid‑morning hours.", "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 Boston to Lisbon?", "answer": "TAP Air Portugal and Delta Air Lines fly nonstop from Boston to Lisbon, with TAP operating up to 37 weekly flights and Delta running 28 per week. TAP's typical median fare is around $884. Delta's schedule includes daily flights, though no specific median fare is listed for its service.", "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 Boston and Lisbon?", "answer": "Common layover cities include Dublin, Reykjavik, London, and Madrid. Dublin and London offer extensive connections and US preclearance on return, while Reykjavik provides efficient, single-terminal transfers. Madrid is a major hub for Iberia with smooth connections to Lisbon." }, "q9": { "question": "How reliable are on‑time departures on this route from Boston to Lisbon?", "answer": "On‑time performance is generally reliable, though afternoon and evening flights face higher risk of delay. Booking morning departures, such as those operated by TAP Air Portugal, improves your chances of leaving on schedule." }, "q10": { "question": "Which months have the best weather for traveling to Lisbon?", "answer": "April to June and September to October offer pleasant temperatures and fewer tourists than the busy summer peak." }, "q11": { "question": "What documents should I bring with me to the airport when flying from Boston to Lisbon?", "answer": "Bring a passport valid for at least three months beyond your planned stay, proof of onward or return travel, a payment method for baggage, and check if a visa or ETIAS authorization is needed based on your nationality." }, "q12": { "question": "Which airport should I use in Lisbon?", "answer": "Lisbon has one airport, Humberto Delgado Airport, located about 7 km from downtown. It serves as a hub for TAP Air Portugal and handles both full-service and low-cost carriers, making it convenient for all travel purposes." }, "q13": { "question": "How do I get to Logan Intl Airport from the city center?", "answer": "From downtown Boston, the most popular and fastest option is the MBTA Silver Line SL1 bus, which runs from South Station directly to all terminals for free. The Logan Express Back Bay route also provides a convenient shuttle from the Back Bay area for $3 each way. Ride-share services like Uber and Lyft offer door-to-door convenience, while taxis are available at set rates. Driving and parking at the airport is possible but generally the most expensive choice.", "toolsUsed": [], "references": [ { "url": "https://massport.com/logan-airport/getting-to-logan", "title": "How to Get to Logan Airport | Massport", "favicon": "https://massport.com/themes/custom/massport/favicon.ico", "time_published": "2026-07-16T04:58:05Z" }, { "url": "https://massport.com/logan-airport", "title": "Boston Logan International Airport | Massport", "favicon": "https://massport.com/themes/custom/massport/favicon.ico", "time_published": "2026-05-18T12:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Logan%20Express", "title": "Logan Express", "time_published": "2026-04-03T22:49:32Z" }, { "url": "https://faa.gov/regulations_policies/orders_notices/index.cfm/go/document.information/documentID/4412", "title": "Order AT 7210.6A - Arrival Metering to Boston-Logan Airport (Cancelled)", "time_published": "2026-04-10T00:00:00Z" }, { "url": "https://en.wikipedia.org/wiki/Logan%20International%20Airport", "title": "Logan International Airport", "time_published": "2026-04-22T19:25:41Z" } ] }, "q17": { "question": "What aircraft are typically used on flights from Boston to Lisbon?", "answer": "The nonstop flights from Boston to Lisbon are typically operated with Airbus A321-200 Neo, Airbus A330-900 Neo, and Airbus A321-100 aircraft, flown by TAP Air Portugal and Delta. The exact aircraft can vary by day, with the A321neo and A330neo being the most common types on this route. Wi-Fi and seatback entertainment are widely available on these modern aircraft, though specific amenities depend on the airline and configuration.", "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 Boston to Lisbon?", "answer": "TAP Air Portugal (TP), a Star Alliance member, and Delta Air Lines (DL), a SkyTeam member, fly nonstop from Boston to Lisbon. Both carriers belong to alliances, so every nonstop option is alliance-affiliated; other alliances may serve the route via connections.", "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 Boston?", "answer": "At Boston Logan, Delta Sky Clubs are available in Terminals A (Gates A6 and A18) and E, offering complimentary food, drinks, and Wi-Fi for eligible flyers. Terminal B houses the Chase Sapphire Lounge by The Club, accessible to Sapphire Reserve cardholders and Priority Pass members, featuring craft cocktails and locally inspired dining. The Lufthansa Lounge in Terminal E near Gate E11 provides premium food, a full bar, and runway views, primarily for Lufthansa Group business/first class passengers and certain elite members. An Air France Lounge is also located in Terminal E, and The Lounge BOS in Terminal C is open to Priority Pass holders and paying guests.", "toolsUsed": [], "references": [ { "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/BOS", "title": "American Express Lounges at Logan International Airport | Amex US", "time_published": "2026-05-03T00:00:00Z" }, { "url": "https://www.delta.com/us/en/airports/united-states/boston-sky-club-airport-map", "title": "Boston Logan (BOS) Airport Map & Lounges | Delta Air Lines", "time_published": "2024-07-17T00:00:00Z" }, { "url": "https://americanexpress.com/en-us/travel/lounges/the-platinum-card/BOS/lufthansa-lounge-terminal-e-DPm6RHJhaY", "title": "Lufthansa Lounge at Logan International Airport | Amex US", "favicon": "https://www.americanexpress.com/apple-touch-icon-152x152.png" }, { "url": "https://prioritypass.com/lounges/usa/boston-ma-logan-international", "title": "Logan International Airport BOS Lounges - BOS Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z" }, { "url": "https://my.prioritypass.com/en-GB/lounges/united-states-of-america/logan-international", "title": "Logan International Airport BOS Lounges - BOS Airport Guide and lounges. | Priority Pass", "time_published": "2024-11-05T00:00:00Z" } ] }, "q21": { "question": "What is the baggage allowance on this route from Boston to Lisbon?", "answer": "On Boston–Lisbon flights, Basic Economy fares may exclude checked bags entirely. Standard economy usually includes one checked bag and a carry‑on, while premium cabins offer increased allowances." }, "q22": { "question": "What cabin and seat options are typical from Boston to Lisbon?", "answer": "On this route, you'll find Economy and flat‑bed Business class as standard; Premium Economy is available on select airlines like TAP Air Portugal and Delta." }, "q23": { "question": "Are same‑day changes or standby possible on this route?", "answer": "Policies differ by airline and fare class; flexible tickets and premium cabins typically allow same‑day changes or standby, while Basic Economy and restrictive fares often do not." } } } }