Boston (BOS) to Istanbul (IST)
Flight time
≈ 10h 24m
Bearing
52° NE
Boston (BOS) to Istanbul (IST) is 4,801 miles (7,726 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–IST
Filed traffic dataIn May 2026, Turkish Airlines was the only carrier flying nonstop BOS–IST; the Airbus A350-900 was the most common aircraft at 84% of departures; flights ran 87% full.
Departures
63
May 2026
Seats
20,371
both directions
Passengers
17,769
both directions
Load factor
87.2%
RPM ÷ ASM
Who flies BOS–IST?
Turkish Airlines was the only carrier to fly nonstop BOS–IST in May 2026 (63 departures).
- TK
Turkish Airlines
63 departures · 20,371 seats
Share of departures100.0%87.2%
Load
What plane flies BOS–IST?
In May 2026, the Airbus A350-900 flew 84% of BOS–IST departures — more than any other aircraft type.
- Airbus A350-900
53 departures · 86.1% load
84.1% - Airbus A330-200
6 departures · 96.4% load
9.5% - Boeing 787-9
4 departures · 90.4% load
6.3%
How has BOS–IST traffic changed?
Nonstop BOS–IST departures held steady at about 63 a month between June 2025 and May 2026.
Monthly nonstop BOS–IST traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
63 departures · 16,815 passengers
82.9%
Load
July 2025
61 departures · 17,001 passengers
84.2%
Load
August 2025
54 departures · 15,914 passengers
90.0%
Load
September 2025
59 departures · 16,359 passengers
84.8%
Load
October 2025
60 departures · 15,490 passengers
79.1%
Load
November 2025
49 departures · 12,450 passengers
79.6%
Load
December 2025
53 departures · 13,913 passengers
84.0%
Load
January 2026
56 departures · 14,575 passengers
81.3%
Load
February 2026
36 departures · 8,888 passengers
76.1%
Load
March 2026
0 departures · 0 passengers
—
Load
April 2026
58 departures · 15,132 passengers
81.8%
Load
May 2026
63 departures · 17,769 passengers
87.2%
Load
By direction
Each direction is filed separately — they rarely match.
BOS → IST
89.3% full
32 departures · 9,248 passengers
IST → BOS
85.0% full
31 departures · 8,521 passengers
Nonstop BOS–IST traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Istanbul
TR
İstanbul Airport
Coordinates
41.27°N, 28.73°E
Hemisphere
N · E
Frequently asked
How far is Boston (BOS) from Istanbul (IST)?
BOS to IST is 4,801 miles (7,726 km / 4,172 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to IST?
A nonstop covers the 4,801-mile great-circle distance in roughly 10h 24m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–IST?
In May 2026, the Airbus A350-900 flew the largest share of departures (84.1%), followed by the Airbus A330-200 (9.5%).
What mileage do I earn flying BOS–IST?
Distance-based programs credit off the 4,801-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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