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 → IST
Boston to Istanbul
Best fare, round trip
$518
−35%
below its usual $800
you keep $282
GreatFound
- Depart
- Sun 1 Nov
- Return
- Tue 1 Dec
- Stay
- 30 nights
- Flight
- Nonstop · 8.5h
- Airline
- Turkish Airlines
Most of this route’s monthly lows fall between $760 and $892. The drop beats 84% of measured fares on the board, over 9 observed months.
Cached fare — the booking search re-prices live before you pay.
TürkiyeIstanbulTwo continents, one skyline of minarets. Turkish Airlines’ mega-hub means constant fare battles.Best windowApr–May · Sep–OctAirportsIstanbul (IST) · Sabiha Gökçen (SAW)Every route into IstanbulFare seasonality
When this route gets cheap.
Fares bottom out in November around $518 and peak in April near $908, 75% dearer, across the 9 months we track. The cheapest itinerary we are tracking flies Turkish Airlines nonstop and takes about 8.5 hours outbound, on a 30-night trip. At $518 for 7,764 km each way, that works out to about $33 per 1,000 km flown. That is below the $44 per 1,000 km typical of long-haul fares here. Across the 16 departure cities we track at a similar distance from Istanbul, this fare ranks 6th — 33% above the $390 from Seoul. It is also the cheapest of the 22 routes of similar length we watch out of Boston. The best time to be in Istanbul: Apr–May · Sep–Oct.
Day-level prices for the next 4 months
Press a day to compare its fares
The median cached fare across this calendar is 8% higher than when tracking began on 8 Aug — $824 then versus $892 now, across 23 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 $429, on 1 Oct.
Cached day-level data for this route is sparse — 15 of 107 days priced, from 134 tracked fares. The days below are shown as found, with no cheapest-day or below-median call.
October 2026
November 2026
Sunday 1 November: $518. Compare fares from this day.Monday 2 November: $760. Compare fares from this day.34Thursday 5 November: $807. Compare fares from this day.6Saturday 7 November: $730. Compare fares from this day.891011121314151617Wednesday 18 November: $984. Compare fares from this day.19202122232425Thursday 26 November: $1.1k. Compare fares from this day.27282930
December 2026
Tuesday 1 December: $765. Compare fares from this day.23456789101112Sunday 13 December: $1.2k. Compare fares from this day.14151617181920212223Thursday 24 December: $1.6k. Compare fares from this day.2526Sunday 27 December: $951. Compare fares from this day.Monday 28 December: $771. Compare fares from this day.293031
January 2027
123Monday 4 January: $890. Compare fares from this day.5678910111213141516171819202122232425262728293031
Cached fares · checked 17 Oct 2026
Cheapest in Nov, around $518
35% below the $800 typical fare
$892Oct, above the usual price. Compare October fares.$518Nov, the cheapest month. Compare November fares.$765Dec, around the usual price. Compare December fares.$890Jan ’27, above the usual price. Compare January fares.$798Feb, around the usual price. Compare February fares.$739Mar, below the usual price. Compare March fares.$908Apr, above the usual price. Compare April fares.$901Jun, above the usual price. Compare June fares.$760Aug, below the usual price. Compare August fares.
CheapestBelow usualUsualAbove usualPress a month to compare its fares
Cheapest round-trip fare found each month, Boston to Istanbul, from cached prices.
Route facts
- Airports
- Logan (BOS) ↔ Istanbul (IST) · Sabiha Gökçen (SAW)
- Flight time
- ≈8.5 hours outbound
- Distance
- ≈7,764 km each way
- Typical price
- $800 round-trip (seasonal median)
- Airlines on the board
- Turkish Airlines
- Itineraries
- Nonstop available
- Best months to visit
- Apr–May · Sep–Oct
Good to know
BOS → IST, answered.
Is $518 a good price for Boston to Istanbul?
Yes — the seasonal median for this route is around $800 round-trip. At $518 you're 35% below that, which we rate great for this route.
What is the cheapest month to fly from Boston to Istanbul?
Across 9 months of cached-fare history, Nov comes out cheapest on this route. The best months to actually be in Istanbul are Apr–May · Sep–Oct — when those overlap, that's your window.
How far in advance should I book BOS → Istanbul?
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 9 months of cached fares, Nov 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 Istanbul?
Yes — the current board includes nonstop fares (Turkish Airlines). The outbound leg runs around 8.5 hours.
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 Istanbul?
Lock the flight first — then compare stays for 1 Nov – 1 Dec · 30 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → IST drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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