Rare1 stop · 17h
BOS to TYOJapan
Tokyo
$910
usually $1,730
−47%
Most monthly lows $1,262–$1,730. Cheaper than every other month on record (3).
Flights · BOS → BKK
Boston to Bangkok
Best fare, round trip
$506
−56%
below its usual $1,140
you keep $634
ExceptionalFound
- Depart
- Sun 7 Mar
- Return
- Sat 17 Apr
- Stay
- 41 nights
- Flight
- 1 stop · 17.5h
- Airline
Turkish Airlines
Most of this route’s monthly lows fall between $915 and $1,187. The drop beats 97% of measured fares on the board, over 6 observed months.
Cached fare — the booking search re-prices live before you pay.
ThailandBangkokThe backpacker cliché that still delivers: gold temples, boat noodles, $12 street-food feasts.Best windowNov–FebAirportsSuvarnabhumi (BKK) · Don Mueang (DMK)Every route into BangkokFare seasonality
When this route gets cheap.
Fares bottom out in March around $506 and peak in January near $1,241, 145% dearer, across the 6 months we track. The cheapest itinerary we are tracking makes one stop and takes about 17.5 hours outbound, on a 41-night trip — ticketed under Turkish Airlines, which on a connecting fare need not operate every leg. At $506 for 13,716 km each way, that works out to about $18 per 1,000 km flown. That is well under the $42 per 1,000 km that ultra-long-haul fares on this board typically run. Across the 13 departure cities we track at a similar distance from Bangkok, this fare ranks 2nd — 13% above the $448 from New York. It is also the cheapest of the 29 routes of similar length we watch out of Boston. The best time to be in Bangkok: Nov–Feb.
The 3 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 29% higher than when tracking began on 8 Aug — $918 then versus $1,187 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 $506, on 7 Mar '27.
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 13 Oct 2026
Cheapest in Mar, around $506
56% below the $1,140 typical fare
$915Oct, below the usual price. Compare October fares.$1139Nov, around the usual price. Compare November fares.$1187Dec, around the usual price. Compare December fares.$1241Jan ’27, above the usual price. Compare January fares.$944Feb, below the usual price. Compare February fares.$506Mar, the cheapest month. Compare March fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, Boston to Bangkok, from cached prices.
Route facts
- Airports
- Logan (BOS) ↔ Suvarnabhumi (BKK) · Don Mueang (DMK)
- Flight time
- ≈17.5 hours outbound
- Distance
- ≈13,716 km each way
- Typical price
- $1,140 round-trip (seasonal median)
- Airlines on the board
- Turkish Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Nov–Feb
Good to know
BOS → BKK, answered.
Is $506 a good price for Boston to Bangkok?
Yes — the seasonal median for this route is around $1,140 round-trip. At $506 you're 56% below that, which we rate exceptional for this route.
What is the cheapest month to fly from Boston to Bangkok?
Across 6 months of cached-fare history, Mar comes out cheapest on this route. The best months to actually be in Bangkok are Nov–Feb — when those overlap, that's your window.
How far in advance should I book BOS → Bangkok?
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 6 months of cached fares, Mar 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 Bangkok?
The current cheapest fares involve a connection, ticketed under Turkish 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 Bangkok?
Lock the flight first — then compare stays for 7 Mar '27 – 17 Apr '27 · 41 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → BKK drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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