{"response": {"Key": "BOS-TYO", "orig": {"code": "BOS", "type": "airport", "city": "Boston", "fullCity": "Boston, Massachusetts", "airport": "Logan Intl Airport"}, "dest": {"code": "TYO", "type": "airport", "city": "Tokyo", "fullCity": "Tokyo, Japan", "airport": "Narita Intl Airport"}, "faq": {"q0": {"question": "What is the typical flight duration from Boston to Tokyo?", "answer": "The flight from Boston to Tokyo covers about 6,690 miles. A typical nonstop flight takes 14 hours, while the return leg is about 12 hours 50 minutes, making the outbound journey longer by roughly 70 minutes.", "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 Tokyo?", "answer": "Japan Airlines flies nonstop from Boston to Tokyo Narita daily, with five departures clustered around midday. There are about 35 weekly flights on this single-carrier route, all operated with Boeing 787-9 aircraft. The flight typically takes about 14 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. 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": ["route_airlines", "flight_schedule", "route_aircraft", "redeye_flights"]}, "q3": {"question": "What are the ground transportation options in Tokyo?", "answer": "From Narita International Airport, the fastest and most popular way to reach central Tokyo is the Narita Express (N'EX) train, which takes 55–60 minutes and costs ¥2,870 one way. The Keisei Skyliner is a competing express train, while airport limousine buses, taxis, and rental cars are also available. Taxis are convenient but expensive for the roughly 60-kilometer trip, and ride-share services are limited in Japan. Mass transit via regular JR or Keisei trains is cheaper but slower. Most travelers use the Narita Express for its speed, comfort, and direct connections to major stations like Tokyo and Shinjuku.", "toolsUsed": [], "references": [{"url": "https://en.wikipedia.org/wiki/Narita%20Express", "title": "Narita Express", "time_published": "2026-03-01T17:13:38Z"}, {"url": "http://www.narita-airport.jp/en/service/transportation/", "title": "Transportation / Accommodation / Refreshment Space | NARITA INTERNATIONAL AIRPORT", "time_published": "2016-01-01T00:00:00Z"}, {"url": "https://en.wikipedia.org/wiki/Narita_Express", "title": "Narita Express", "time_published": "2026-06-09T19:28:20Z"}, {"url": "https://www.narita-airport.jp/en/faq/access/", "title": "Frequently Asked Questions list of Airport Access | NARITA INTERNATIONAL AIRPORT", "time_published": "2016-01-01T00:00:00Z"}, {"url": "https://www.mlit.go.jp/kankocho/en/siryou/toukei/syouhityousa.html", "title": "International Visitor Survey | Statistical Information | Statistics/White Paper | Japan Tourism Agency", "time_published": "2026-04-15T00:00:00Z"}]}, "q4": {"question": "When is the cheapest time to fly from Boston to Tokyo?", "answer": "The cheapest months to fly from Boston to Tokyo are September, November, and February, with average fares around $1,079 to $1,139, while June and May are the most expensive, averaging $1,726 and $1,621 respectively.", "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 Tokyo?", "answer": "For flights from Boston to Tokyo, the best fares are typically found when booking 23 to 26 weeks in advance, with an average price around $1,527. Booking exactly 180 days out can yield the lowest fare of about $1,488, while last-minute purchases within a week of departure can cost over $1,700. For summer and holiday periods, booking even earlier — up to 6 to 7 months ahead — is advisable to secure the best deals.", "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 Tokyo?", "answer": "No overnight (red-eye) flights are available from Boston to Tokyo — neither nonstop nor connecting itineraries with a red-eye long leg operate on this route.", "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 Tokyo?", "answer": "Japan Airlines operates the only nonstop service from Boston to Tokyo, with 35 weekly flights to Narita. Other carriers may also serve the route, often via a connection.", "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 Tokyo?", "answer": "Common layover cities between Boston and Tokyo include Chicago, Los Angeles, San Francisco, and Dallas. These hubs offer broad domestic and international connections, efficient transfer processes, and often feature single-terminal or streamlined connections for passengers traveling on a single ticket."}, "q10": {"question": "Which months have the best weather for traveling to Tokyo?", "answer": "Late March to early May for cherry blossoms and mild temperatures, and October to early November for pleasant autumn weather and fewer crowds."}, "q11": {"question": "What documents should I bring with me to the airport when flying from Boston to Tokyo?", "answer": "Bring a passport valid for the duration of your stay, a visa or travel authorization if required by your nationality, proof of onward or return travel, a payment method for baggage, and any vaccination or health documents Japan requires."}, "q12": {"question": "Which airport should I use in Tokyo?", "answer": "Narita handles most long‑haul international flights and is about 60 km east of central Tokyo. Haneda is much closer to the city centre, serves many domestic and an increasing number of international routes, and is often more convenient for business travellers."}, "q13": {"question": "How do I get to Logan Intl Airport from the city center?", "answer": "Getting to Boston Logan from downtown is straightforward: the MBTA's Blue Line and free Silver Line SL1 bus are the most economical and popular public transit options, while the Logan Express Back Bay bus offers a direct, comfortable ride at a low fare. Ride-share services like Uber and Lyft provide door-to-door convenience, and taxis are readily available, both taking about 15–25 minutes depending on traffic, though they cost more than transit. Driving yourself is possible, but on-airport parking is pricey and often congested, so it's generally the least recommended choice unless you need a car at your destination.", "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 Tokyo airport?", "answer": "Tokyo Narita Airport has on-site sleeping facilities including day rooms in Terminals 1 and 2, and a 24-hour capsule hotel called Nine Hours Narita Airport located in Terminal 2's Cary Park. These are inside the airport, so no shuttle is needed. Nearby hotels connected by shuttle are also available.", "toolsUsed": [], "references": [{"url": "https://sleepinginairports.net/guides/tokyo-narita-airport-guide.htm", "title": "Tokyo Narita Airport Guide (NRT) - 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": "2018-10-02T00:00:56Z"}, {"url": "https://www.sleepinginairports.net/sleep-guide/sleeping-in-tokyo-narita-airport.htm", "title": "Sleeping in Tokyo Narita Airport", "time_published": "2024-04-29T00:00:00Z"}, {"url": "https://activities.marriott.com/asia/japan/tokyo/activities/private_one_way_transfer_narita_airport_to_tokyo-XBHJ84", "title": "Private One-way Transfer Narita Airport To Tokyo", "time_published": "2026-02-23T00:00:00Z"}, {"url": "http://activities.marriott.com/asia/japan/ginza/activities/private_departure_transfer_central_tokyo_city_to_narita_international_airport-XARSOP?property=TYOAR", "title": "Private Departure Transfer : Central Tokyo City to Narita International Airport", "time_published": "2026-04-01T00:00:00Z"}, {"url": "https://all.accor.com/a/en/destination/place/hotels-narita-international-airport-ci242.html?pageIndex=2", "title": "Hotels near Narita International Airport – Book on all.accor.com", "time_published": "2026-04-22T00:00:00Z"}, {"url": "http://www.narita-airport.jp/en/service/transportation/capsule-hotel/", "title": "Capsule Hotel | NARITA INTERNATIONAL AIRPORT", "time_published": "2016-01-01T00:00:00Z"}]}, "q15": {"question": "Are there currency exchange offices, prayer rooms and Wi‑Fi at Narita Intl Airport?", "answer": "Tokyo Narita International Airport has currency exchange counters in Terminals 1 and 2, including on the basement 1st floor, 1st floor (arrivals), and 3rd floor (after passport control) of Terminal 1, and the basement 1st floor and 1st floor (arrivals) of Terminal 2. Prayer rooms are located on the 3rd floor of Terminal 1, both before and after outbound passport control. Free Wi‑Fi is available, with rental and SIM card counters in the 1st floor arrivals area of Terminal 1 and basement 1st floor of Terminal 2, and free internet access on the 4th floor of Terminal 1.", "toolsUsed": [], "references": [{"url": "http://www.narita-airport.jp/en/service/ud/guide/", "title": "Narita Airport Facility Layout | NARITA INTERNATIONAL AIRPORT", "time_published": "2016-01-01T00:00:00Z"}, {"url": "http://www.narita-airport.jp/en/service/transportation/", "title": "Transportation / Accommodation / Refreshment Space | NARITA INTERNATIONAL AIRPORT", "time_published": "2016-01-01T00:00:00Z"}, {"url": "https://en.wikipedia.org/wiki/Narita%20Express", "title": "Narita Express", "time_published": "2026-03-01T17:13:38Z"}, {"url": "https://en.wikipedia.org/wiki/Narita_Express", "title": "Narita Express", "time_published": "2026-06-09T19:28:20Z"}, {"url": "http://www.mlit.go.jp/koku/15_hf_000032.html", "title": "Narita International Airport - MLIT Japan", "time_published": "2006-01-01T00:00:00Z"}]}, "q17": {"question": "What aircraft are typically used on flights from Boston to Tokyo?", "answer": "The nonstop Boston–Tokyo flights are operated by Japan Airlines using the Boeing 787-9. On connecting itineraries, the most common long-haul aircraft are the Boeing 777-300ER (via Chicago, San Francisco, or Newark on ANA and United), the Boeing 787-9 (via Los Angeles, Seattle, or Denver on ANA, JAL, and United), and the Airbus A350-1000 (via Dallas/Fort Worth, New York JFK, or Los Angeles on JAL). The exact aircraft on any given day can vary, and both Wi-Fi and seatback entertainment are widely available across these long-haul fleets.", "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 Tokyo?", "answer": "Japan Airlines (JAL), a Oneworld member, is the only carrier flying nonstop from Boston to Tokyo. Other alliances may serve the route via connections, but no Star Alliance or SkyTeam airline operates it nonstop.", "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"]}, "q21": {"question": "What is the baggage allowance on this route from Boston to Tokyo?", "answer": "On Boston–Tokyo flights, allowance depends on the airline and fare. Basic economy often excludes checked bags, while standard international economy typically includes one checked bag and a carry‑on. Premium cabins provide more generous allowances."}, "q22": {"question": "What cabin and seat options are typical from Boston to Tokyo?", "answer": "Flights from Boston to Tokyo typically offer Economy and flat-bed Business class; Premium Economy is common on many carriers, while First class is limited."}, "q23": {"question": "Are same‑day changes or standby possible on this route?", "answer": "Policies depend on the airline and fare class; premium cabins and flexible tickets often allow same‑day changes or standby, while deeply discounted economy fares generally do not."}}}}