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 → BEG
Boston to Belgrade
Best fare, round trip
$707
Too little price history on this route to compare — the fare is shown as found.
Found
- Depart
- Thu 10 Dec
- Return
- Sun 13 Dec
- Stay
- 3 nights
- Flight
- 2 stops · 11.5h
- Airline
TAP Air Portugal
Cached fare — the booking search re-prices live before you pay.
SerbiaBelgradeTwo rivers, a fortress between them, and nightlife that starts when other capitals are closing.Best windowMay–Jun · Sep–OctAirportsNikola Tesla (BEG)Every route into BelgradeFare seasonality
When this route gets cheap.
The cheapest itinerary we are tracking makes 2 stops and takes about 11.5 hours outbound, on a 3-night trip — ticketed under TAP Air Portugal, which on a connecting fare need not operate every leg. At $707 for 6,956 km each way, that works out to about $51 per 1,000 km flown. That is above the $44 per 1,000 km typical of long-haul fares here. Across the 11 departure cities we track at a similar distance from Belgrade, this fare ranks 6th — 36% above the $519 from Chicago. That puts it in the cheaper half of the 29 routes of similar length we watch out of Boston, where the middle fare is $707. We have 3 months 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 Belgrade: May–Jun · Sep–Oct.
The 4 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 2% higher than when tracking began on 8 Aug — $880 then versus $896 now, across 18 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 $520, on 28 Dec.
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 — 3 months of cached prices so far, too few to chart.
Route facts
- Airports
- Logan (BOS) ↔ Nikola Tesla (BEG)
- Flight time
- ≈11.5 hours outbound
- Distance
- ≈6,956 km each way
- Airlines on the board
- TAP Air Portugal
- Itineraries
- Connections on current fares
- Best months to visit
- May–Jun · Sep–Oct
Good to know
BOS → BEG, answered.
How far in advance should I book BOS → Belgrade?
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 Belgrade?
The current cheapest fares involve a connection, ticketed under TAP Air Portugal. 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 Belgrade?
Lock the flight first — then compare stays for 10–13 Dec · 3 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → BEG 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).
RareNonstop · 2.5h
BCN to BEGSpain
Barcelona
$62
usually $135
−54%
Most monthly lows $87–$144. Cheaper than every other month on record (10).
RareNonstop · 2h
CPH to BEGDenmark
Copenhagen
$118
usually $200
−41%
Most monthly lows $171–$228. Cheaper than every other month on record (6).
Great1 stop · 5.5h
FRA to BEGGermany
Frankfurt
$116
usually $190
−39%
Most monthly lows $165–$206. Cheaper than every other month on record (6).
