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Boston to Istanbul BOS → IST, SAW

Logan International Airport (BOS) → Istanbul New Airport (IST), Sabiha Gokcen International Airport (SAW)

The cheapest return found recently is $704 with British Airways, 26 Apr 2027 – 30 Apr 2027, found yesterday. The cheapest one-way found recently is $414 with Aer Lingus, 25 Oct, found yesterday.

Return

The cheapest return fare on each of 19 departure dates is usually $778 to $967.

Cheapest return found recently

$704

26 Apr 2027 – 30 Apr 2027 · British Airways

Logan International Airport (BOS) → Istanbul New Airport (IST)

Leaves 7:25 a.m. · Return leaves 8:10 a.m. · 39 h of travel, both ways together

out 1 stop, back 1 stop

found yesterday

See prices for these datesCheck today's price

Cheapest nonstop return

$765

26 Aug 2027 – 30 Sept 2027 · Turkish Airlines

Logan International Airport (BOS) → Istanbul New Airport (IST)

Leaves 1:10 p.m. · Return leaves 4:40 p.m. · 19 h 35 min of travel, both ways together

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

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Found recently, and the cheapest we hold

Cheapest found recently $704 26 Apr 2027 – 30 Apr 2027found yesterdaySee prices for these dates

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $573 to $795.

$704, the cheapest return found recently, sits here in that range of $573 to $795.

25 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good return price?

Compared with the cheapest return fare on each of 19 departure dates from 24 Oct to 26 Aug 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

We hold no other 4-night return fares leaving within 3 days of 26 Apr 2027 to compare.

Every date we hold

23 fares on 19 departure dates

24 Oct – 31 Oct: $892, found 5 days ago30 Oct – 3 Dec: $908, found 4 days ago1 Nov – 6 Nov: $794, found yesterday18 Nov – 29 Nov: $982, found 5 days ago24 Nov – 28 Nov: $1,114, found 2 days ago26 Nov – 3 Dec: $868, found 2 days ago1 Dec – 13 Dec: $765, found 4 days ago11 Dec – 24 Dec: $874, found yesterday12 Dec – 26 Dec: $935, found yesterday13 Dec – 3 Jan 2027: $1,154, found 4 days ago16 Dec – 22 Dec: $985, found today19 Dec – 26 Dec: $1,386, found yesterday27 Dec – 13 Jan 2027: $951, found 5 days ago28 Dec – 13 Jan 2027: $771, found 6 days ago4 Jan 2027 – 11 Jan 2027: $784, found yesterday7 Mar 2027 – 15 Mar 2027: $739, found 3 days ago26 Apr 2027 – 30 Apr 2027: $704, found yesterday2 Jun 2027 – 2 Jul 2027: $901, found 3 days ago26 Aug 2027 – 30 Sept 2027: $765, found yesterdayOctNovDecAug
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
24 Oct – 31 Oct$892Etihad AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates
30 Oct – 3 Dec$908Etihad AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
1 Nov – 6 Nov$794Turkish AirlinesLogan International Airport (BOS) → Istanbul New Airport (IST)out nonstop, back nonstopfound yesterdaySee prices for these dates
18 Nov – 29 Nov$982Aer LingusLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 3 stopsfound 5 days agoSee prices for these dates
24 Nov – 28 Nov$1,114United AirlinesLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)out 2 stops, back 3 stopsfound 2 days agoSee prices for these dates
26 Nov – 3 Dec$868Air FranceLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
1 Dec – 13 Dec$765Turkish AirlinesLogan International Airport (BOS) → Istanbul New Airport (IST)out nonstop, back nonstopfound 4 days agoSee prices for these dates
11 Dec – 24 Dec$874British AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
12 Dec – 26 Dec$935United AirlinesLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)out 3 stops, back 1 stopfound yesterdaySee prices for these dates
13 Dec – 3 Jan 2027$1,154Aer LingusLogan International Airport (BOS) → Istanbul New Airport (IST)out 2 stops, back 3 stopsfound 4 days agoSee prices for these dates
16 Dec – 22 Dec$985IcelandairLogan International Airport (BOS) → Istanbul New Airport (IST)out 2 stops, back 2 stopsfound todaySee prices for these dates
19 Dec – 26 Dec$1,386Air CanadaLogan International Airport (BOS) → Istanbul New Airport (IST)out 2 stops, back 1 stopfound yesterdaySee prices for these dates
27 Dec – 13 Jan 2027$951Turkish AirlinesLogan International Airport (BOS) → Istanbul New Airport (IST)out nonstop, back nonstopfound 5 days agoSee prices for these dates
28 Dec – 13 Jan 2027$771Turkish AirlinesLogan International Airport (BOS) → Istanbul New Airport (IST)out nonstop, back nonstopfound 6 days agoSee prices for these dates
4 Jan 2027 – 11 Jan 2027$784British AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
7 Mar 2027 – 15 Mar 2027$739British AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
26 Apr 2027 – 30 Apr 2027$704British AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
2 Jun 2027 – 2 Jul 2027$901Qatar AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
26 Aug 2027 – 30 Sept 2027$765Turkish AirlinesLogan International Airport (BOS) → Istanbul New Airport (IST)out nonstop, back nonstopfound yesterdaySee prices for these dates

Which month looks cheapest?

April 2027 is the cheapest month — from $704.

October 2026From $8922 departure dates24 Oct – 31 Oct · found 5 days agoSee prices for these dates
November 2026From $7944 departure dates1 Nov – 6 Nov · found yesterdaySee prices for these dates
December 2026From $7658 departure dates1 Dec – 13 Dec · found 4 days agoSee prices for these datesEvery date in December 2026
January 2027From $7841 departure date4 Jan 2027 – 11 Jan 2027 · found yesterdaySee prices for these dates
March 2027From $7391 departure date7 Mar 2027 – 15 Mar 2027 · found 3 days agoSee prices for these dates
April 2027From $704Cheapest seen1 departure date26 Apr 2027 – 30 Apr 2027 · found yesterdaySee prices for these dates
June 2027From $9011 departure date2 Jun 2027 – 2 Jul 2027 · found 3 days agoSee prices for these dates
August 2027From $7651 departure date26 Aug 2027 – 30 Sept 2027 · found yesterdaySee prices for these dates

Airlines on the cheapest dates: Turkish Airlines, British Airways, Etihad Airways, Aer Lingus, United Airlines, Air France, Icelandair, Air Canada.

One-way

The cheapest one-way fare on each of 9 departure dates is usually $414 to $448.

Cheapest one-way found recently

$414

25 Oct · Aer Lingus

Logan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)

Leaves 10:20 p.m. · 14 h 5 min trip

stops unknown

found yesterday

Open this tripCheck today's price

Cheapest nonstop one-way

None seen yet.

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Found recently, and the cheapest we hold

Cheapest found recently $414 25 Octfound yesterdayOpen this trip

Cheapest we hold, of any age $366 21 Octfound 2 days agoOpen this trip

What have prices looked like?

Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $313 to $403.

At $414, the cheapest one-way found recently is above that range.

25 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good one-way price?

Compared with the cheapest one-way fare on each of 9 departure dates from 21 Oct to 30 Sept 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

Yes. Among one-way fares leaving within 3 days of 25 Oct, 22 Oct costs $366: $48 less than the cheapest found recently.

jetBlue · Logan International Airport (BOS) → Sabiha Gokcen International Airport (SAW) · stops unknown · found 3 days ago

Open this tripCheck today's price

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Every date we hold

11 fares on 9 departure dates

21 Oct: $366, found 2 days ago22 Oct: $366, found 3 days ago25 Oct: $414, found yesterday19 Nov: $448, found yesterday2 Jan 2027: $517, found 4 days ago4 Jan 2027: $425, found 6 days ago14 Jan 2027: $423, found 6 days ago20 May 2027: $419, found 3 days ago30 Sept 2027: $468, found 4 days agoOctNovJanMaySep
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
21 Oct$366jetBlueLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)stops unknownfound 2 days agoOpen this trip
22 Oct$366jetBlueLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)stops unknownfound 3 days agoOpen this trip
25 Oct$414Aer LingusLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)stops unknownfound yesterdayOpen this trip
19 Nov$448Air CanadaLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)2 stopsfound yesterdayOpen this trip
2 Jan 2027$517Air CanadaLogan International Airport (BOS) → Istanbul New Airport (IST)3 stopsfound 4 days agoOpen this trip
4 Jan 2027$425TAP Air PortugalLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)2 stopsfound 6 days agoOpen this trip
14 Jan 2027$423TAP Air PortugalLogan International Airport (BOS) → Sabiha Gokcen International Airport (SAW)2 stopsfound 6 days agoOpen this trip
20 May 2027$419British AirwaysLogan International Airport (BOS) → Istanbul New Airport (IST)1 stopfound 3 days agoOpen this trip
30 Sept 2027$468LufthansaLogan International Airport (BOS) → Istanbul New Airport (IST)1 stopfound 4 days agoOpen this trip

Which month looks cheapest?

October 2026 is the cheapest month — from $366.

October 2026From $366Cheapest seen3 departure dates21 Oct · found 2 days agoOpen this trip
November 2026From $4481 departure date19 Nov · found yesterdayOpen this trip
January 2027From $4233 departure dates14 Jan 2027 · found 6 days agoOpen this trip
May 2027From $4191 departure date20 May 2027 · found 3 days agoOpen this trip
September 2027From $4681 departure date30 Sept 2027 · found 4 days agoOpen this trip

Airlines on the cheapest dates: jetBlue, Air Canada, TAP Air Portugal, Aer Lingus, British Airways, Lufthansa.

Premium cabin fares from Boston to Istanbul

We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.

Today's prices for 26 Apr 2027 – 30 Apr 2027 in another cabin: Premium economy · Business · First

Today's prices for 25 Oct in another cabin: Premium economy · Business · First

How far ahead were prices cheapest for Boston to Istanbul?

Return

Fares 60 to 89 days before departure were typically 12% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — round trip, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
0–6 days$807$762+13%21
7–13 days$862$780+21%17
14–29 days$800$730+12%24
30–59 days$788$637+11%25
60–89 days$712$573Cheapest seen25
90–179 days$795$739+12%25
180+ days$798$704+12%16

One-way

Fares 90 to 179 days before departure were typically 5% lower than 30 to 59 days before departure.

From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — one way, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
30–59 days$408$313+6%13
60–89 days$397$361+3%22
90–179 days$386$343Cheapest seen23
180+ days$419$404+9%18

Could a nearby airport be cheaper?

A different airport at either end can change the fare — sometimes a lot.

One-way

Manchester → Istanbul

70 km from Boston

$576

$162 more than flying from Boston

20 Oct · MHT → SAW · 4 stops

found 2 days ago

Check today's price

Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.

Live price for these dates

The cheapest return found recently is for 26 Apr 2027 – 30 Apr 2027. A live search on this page shows what those dates cost now, for one adult in economy.

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work