{"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": "The flight from Boston to Lisbon is about 3,180 miles, with a typical nonstop duration of 6 hours and 25 minutes. The return from Lisbon to Boston is longer at around 7 hours and 40 minutes, due to prevailing winds. Delta and TAP Air Portugal both offer daily nonstop service on this route.", "methodology": "Carrier service, flight times and distances for this route come 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). We report the days of the week and the departure times each carrier operates. The typical flight time is the median scheduled block time, given both per carrier and across all carriers on the route; where a schedule does not publish an elapsed time, it is derived from the scheduled departure and arrival times converted to UTC. Outbound and return times are computed by the same method, so the difference between them is directly comparable and reflects prevailing winds rather than any change in derivation. Distance is the great-circle distance between the two specific airports named, so an actual flown track is typically 2-5% longer. Where shown, on-time departure and arrival rates and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; where a typical fare is shown, it comes from the U.S. DOT Airline Origin and Destination Survey (DB1B), a quarterly 10% sample of tickets sold.", "toolsUsed": ["flight_schedule"]}, "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 daily. Together they offer up to 65 weekly flights, with TAP operating about 37 and Delta about 28; departures are spread across the afternoon and late evening, and typical flight time is around 6.5 hours eastbound.", "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, flight times and distances for this route come 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). We report the days of the week and the departure times each carrier operates. The typical flight time is the median scheduled block time, given both per carrier and across all carriers on the route; where a schedule does not publish an elapsed time, it is derived from the scheduled departure and arrival times converted to UTC. Outbound and return times are computed by the same method, so the difference between them is directly comparable and reflects prevailing winds rather than any change in derivation. Distance is the great-circle distance between the two specific airports named, so an actual flown track is typically 2-5% longer. Where shown, on-time departure and arrival rates and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; where a typical fare is shown, it comes 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"]}, "q3": {"question": "What are the ground transportation options in Lisbon?", "answer": "From Lisbon Airport, the Aerobus shuttle (Lines 1 and 2) is the most-used and fastest direct option to the city center, taking 20–40 minutes and costing €4 for a 24-hour pass. Public buses (numbers 5, 22, 44, 45, 83) are the cheapest way to reach various Lisbon neighborhoods. Taxis are available at arrivals and departures with a meter plus airport surcharge, while ride-share services also operate. There is no direct train from the airport, but nearby stations like Gare do Oriente can be reached by taxi to connect to the metro. Car rentals are available at the airport, though driving and parking in central Lisbon can be difficult.", "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 and November, with average fares around $650, while June and May are the most expensive, averaging over $900.", "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 typically found when booking 6 to 9 weeks ahead, with an average price around $830 during that window. The absolute lowest fare appears about 55 days out at $826, while last-minute bookings can spike to over $1,100. For peak summer (June–August) and holiday periods like Christmas, demand pushes prices higher, so aiming for the earlier end of that window or even a bit further out is wise.", "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": "Yes, overnight red‑eye flights are available nonstop from Boston to Lisbon. Delta and TAP Air Portugal operate daily red‑eyes, with Delta departing between roughly 8:35 PM and 11:25 PM and TAP departing between about 10:10 PM and 11:10 PM. These flights arrive in Lisbon the next morning.", "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 fly nonstop from Boston to Lisbon. TAP operates up to 37 weekly flights with a median fare around $909, while Delta offers up to 28 weekly flights. Both carriers run daily service, with departures spread across the evening.", "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 layovers include Ponta Delgada in the Azores, Dublin, and Madrid. Ponta Delgada offers a unique mid‑Atlantic stop with visa‑free transit, while Dublin provides US pre‑clearance on the return and efficient connections. Madrid is a major hub with broad onward flights."}, "q10": {"question": "Which months have the best weather for traveling to Lisbon?", "answer": "May to June and September to October offer pleasant temperatures and fewer tourists than the 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 stay, proof of onward or return travel, a payment method for baggage, and any required visa or ETIAS travel authorization when implemented."}, "q12": {"question": "Which airport should I use in Lisbon?", "answer": "Lisbon has only one airport, Humberto Delgado Airport, located about 7 km from downtown and close to attractions like the historic centre."}, "q13": {"question": "How do I get to Logan Intl Airport from the city center?", "answer": "From downtown Boston, the Blue Line subway offers a fast, direct connection to the airport shuttle, while the Silver Line bus provides a one-seat ride from South Station. Logan Express buses run from Back Bay and several suburban park-and-ride lots. Ride-share, taxis, and driving with on-site parking are also available, with public transit being the most popular and economical choice during peak traffic.", "toolsUsed": [], "references": [{"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": "http://www.massport.com/logan-airport/to-from-logan/", "title": "How to Get to Logan Airport | Massport", "time_published": "2026-04-07T00:00:00Z"}, {"url": "https://faa.gov/air_traffic/publications/atpubs/ntap_aug_18/NE10001.html", "title": "Massachusetts. Boston-Logan International Airport (KBOS) Land & Hold Operations", "favicon": "https://faa.gov/air_traffic/publications/atpubs/ntap_aug_18/assets/img/apple-touch-icon.png"}, {"url": "https://faa.gov/air_traffic/publications/atpubs/ntap_feb_18/NE17000.html", "title": "Massachusetts. Prototype Runway Status Lights (RWSL) at Boston Logan International Airport (BOS)"}, {"url": "https://en.wikipedia.org/wiki/Logan%20Express", "title": "Logan Express", "time_published": "2026-04-03T22:49:32Z"}]}, "q14": {"question": "Are there hotels or sleeping facilities at Lisbon airport?", "answer": "Lisbon Airport does not have on-site hotels, capsule hotels, or sleeping pods inside the terminals, but there are several nearby hotels connected by free shuttle, including options like the Meliá Lisboa Aeroporto and Tryp Lisboa Aeroporto Hotel. The airport has two terminals (Terminal 1 for traditional airlines and Terminal 2 for low-cost carriers), with a free 24/7 shuttle bus linking them on the landside. Travelers can also find some benches and couches for resting in Terminal 1's food court and near certain gates.", "toolsUsed": [], "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"}]}, "q17": {"question": "What aircraft are typically used on flights from Boston to Lisbon?", "answer": "The most common nonstop aircraft on flights from Boston to Lisbon are the Airbus A321-200 Neo, A330-900 Neo, and A321-100, operated by TAP Air Portugal and Delta. The exact type varies by day and airline, and connecting itineraries often use Airbus A330-200s, A321-200 Neos, or A330-300s via hubs like Ponta Delgada, New York, Newark, or Montreal. Wi‑Fi and seatback entertainment are widely available on these aircraft, though the specific features depend on the carrier 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 (Star Alliance) and Delta Air Lines (SkyTeam) operate nonstop flights between Boston and Lisbon. No oneworld carrier flies this route nonstop, though oneworld members may offer 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"]}, "q20": {"question": "What are the best airport lounge options when departing from Boston?", "answer": "At Boston Logan, Terminal E offers the Air France Lounge (open 8:00 AM–1:30 PM, accessible with Priority Pass or business-class tickets on SkyTeam airlines) and the Lufthansa Lounge (across from gate E11, open to Lufthansa Group passengers and Amex Platinum cardholders, with a bar, bistro, and harbor views). Terminal C houses The Lounge (6:00 AM–10:30 PM, available via Priority Pass or day pass), while the Chase Sapphire Lounge by The Club in Terminal B (5:00 AM–11:00 PM) welcomes Chase Sapphire Reserve cardholders and Priority Pass members. Delta Sky Club is also present, though specific location details weren't retrieved.", "toolsUsed": [], "references": [{"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", "favicon": "https://my.prioritypass.com/icon.png?a4ff481221414a5c", "time_published": "2024-11-05T16:20:09Z"}, {"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://my.prioritypass.com/en-GB/lounges/united-states-of-america/logan-international/bos8-air-france-lounge", "title": "Air France Lounge BOS AIRPORT Terminal E Boston MA Logan International | Priority Pass", "favicon": "https://my.prioritypass.com/icon.png?a4ff481221414a5c"}, {"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://www.americanexpress.com/en-us/travel/lounges/the-centurion-card-idc-en/BOS/Lufthansa-Lounge-Terminal-E-DPm6RHJhaY/", "title": "Lufthansa Lounge at Logan International Airport | Amex US", "time_published": "2026-01-01T00:00:00Z"}]}, "q21": {"question": "What is the baggage allowance on this route from Boston to Lisbon?", "answer": "Baggage rules on Boston–Lisbon flights depend on the airline and fare class. Basic economy usually excludes a checked bag but typically permits a carry‑on and personal item. Standard international economy fares generally include one free checked bag along with a carry‑on."}, "q22": {"question": "What cabin and seat options are typical from Boston to Lisbon?", "answer": "On Boston to Lisbon routes, you can typically choose Economy, Premium Economy, or flat‑bed Business class, with First class being rare."}, "q23": {"question": "Are same‑day changes or standby possible on this route?", "answer": "Policies differ by airline and fare; flexible and premium tickets often allow same‑day changes or standby, while Basic Economy rarely does."}}}}