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 → HAN
Boston to Hanoi
Best fare, round trip
$1,090
Too little price history on this route to compare — the fare is shown as found.
Found
- Depart
- Thu 14 Jan
- Return
- Sun 14 Mar
- Stay
- 59 nights
- Flight
- 1 stop · 21h
- Airline
Korean Air
Cached fare — the booking search re-prices live before you pay.
VietnamHanoiOld-quarter alleys, motorbike tides and the country’s best food — and Ha Long Bay two hours out.Best windowOct–Nov · Mar–AprAirportsNoi Bai (HAN)Every route into HanoiFare seasonality
When this route gets cheap.
The cheapest itinerary we are tracking makes one stop and takes about 21 hours outbound, on a 59-night trip — ticketed under Korean Air, which on a connecting fare need not operate every leg. At $1,090 for 12,960 km each way, that works out to about $42 per 1,000 km flown. That is about the $42 per 1,000 km typical of ultra-long-haul fares here. Across the 13 departure cities we track at a similar distance from Hanoi, this fare ranks 8th — 2.0× the $554 we hold from Madrid. That puts it in the cheaper half of the 27 routes of similar length we watch out of Boston, where the middle fare is $1,110. We have 1 month of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage. Fare history here is still too short to name a cheap season. The best time to be in Hanoi: Oct–Nov · Mar–Apr.
The 4 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 48% lower than when tracking began on 22 Sep — $2,219 then versus $1,160 now, across 3 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 $1,090, on 14 Jan '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
We are still collecting this route's months — 1 month of cached prices so far, too few to chart.
Route facts
- Airports
- Logan (BOS) ↔ Noi Bai (HAN)
- Flight time
- ≈21 hours outbound
- Distance
- ≈12,960 km each way
- Airlines on the board
- Korean Air
- Itineraries
- Connections on current fares
- Best months to visit
- Oct–Nov · Mar–Apr
Good to know
BOS → HAN, answered.
How far in advance should I book BOS → Hanoi?
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. Our guide Why flight prices change covers the levers we can measure.
Are there nonstop flights from Boston to Hanoi?
The current cheapest fares involve a connection, ticketed under Korean Air. 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 Hanoi?
Lock the flight first — then compare stays for 14 Jan '27 – 14 Mar '27 · 59 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → HAN drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
Related routes on the board.
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).
GreatNonstop · 8.5h
BOS to ISTTürkiye
Istanbul
$518
usually $800
−35%
Most monthly lows $760–$892. Cheaper than every other month on record (8).
Rare1 stop · 12h
SYD to HANAustralia
Sydney
$484
usually $885
−45%
Most monthly lows $487–$885. Cheaper than every other month on record (3).
Great1 stop · 20.5h
NYC to HANUnited States
New York
$564
usually $895
−37%
Most monthly lows $792–$905. Cheaper than every other month on record (4).
Great1 stop · 15h
MUC to HANGermany
Munich
$580
usually $910
−36%
Most monthly lows $580–$937. Other months at or below this: 1 of 5.
