Exceptional1 stop · 17.5h
BOS to BKKThailand
Bangkok
$506
usually $1,140
−56%
Most monthly lows $915–$1,187. Cheaper than every other month on record (5).
- Travel dates
- 7 Mar '27 – 17 Apr '27 · 41 nights
- Airline
Turkish Airlines· $18 per 1,000 km
Flights · BOS → TYO
Boston to Tokyo
Best fare, round trip
$910
−47%
below its usual $1,730
you keep $820
RareFound
- Depart
- Mon 1 Feb
- Return
- Sat 6 Feb
- Stay
- 5 nights
- Flight
- 1 stop · 17h
- Airline
Alaska Airlines
Most of this route’s monthly lows fall between $1,262 and $1,730. The drop beats 94% of measured fares on the board, over 4 observed months.
Cached fare — the booking search re-prices live before you pay.
JapanTokyoNeon canyons, 3am ramen, and the world’s most polite chaos. The yen is kind to visitors right now.Best windowMar–May · Oct–NovAirportsNarita (NRT) · Haneda (HND)Every route into TokyoFare seasonality
When this route gets cheap.
Fares bottom out in February around $910 and peak in December near $1,935, 113% dearer, across the 4 months we track. The cheapest itinerary we are tracking makes one stop and takes about 17 hours outbound, on a 5-night trip — ticketed under Alaska Airlines, which on a connecting fare need not operate every leg. At $910 for 10,794 km each way, that works out to about $42 per 1,000 km flown. That is about the $44 per 1,000 km typical of long-haul fares here. Across the 31 departure cities we track at a similar distance from Tokyo, this fare ranks 26th — 54% above the $592 from Milan. That puts it in the cheaper half of the 22 routes of similar length we watch out of Boston, where the middle fare is $1,090. The best time to be in Tokyo: Mar–May · Oct–Nov.
The 2 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 41% higher than when tracking began on 8 Aug — $1,301 then versus $1,832 now, across 16 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $810, on 16 Sep.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cached fares · checked 15 Oct 2026
Cheapest in Feb, around $910
47% below the $1,730 typical fare
$1728Nov, around the usual price. Compare November fares.$1935Dec, above the usual price. Compare December fares.$910Feb ’27, the cheapest month. Compare February fares.$1262Jun, below the usual price. Compare June fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, Boston to Tokyo, from cached prices.
Route facts
- Airports
- Logan (BOS) ↔ Narita (NRT) · Haneda (HND)
- Flight time
- ≈17 hours outbound
- Distance
- ≈10,794 km each way
- Typical price
- $1,730 round-trip (seasonal median)
- Airlines on the board
- Alaska Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Mar–May · Oct–Nov
Good to know
BOS → TYO, answered.
Is $910 a good price for Boston to Tokyo?
Yes — the seasonal median for this route is around $1,730 round-trip. At $910 you're 47% below that, which we rate rare for this route.
What is the cheapest month to fly from Boston to Tokyo?
Across 4 months of cached-fare history, Feb comes out cheapest on this route. The best months to actually be in Tokyo are Mar–May · Oct–Nov — when those overlap, that's your window.
How far in advance should I book BOS → Tokyo?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 4 months of cached fares, Feb comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
Are there nonstop flights from Boston to Tokyo?
The current cheapest fares involve a connection, ticketed under Alaska Airlines. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 17 October). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Tokyo?
Lock the flight first — then compare stays for 1–6 Feb '27 · 5 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → TYO drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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