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 July 2026, Turkish Airlines was the only carrier flying nonstop BOS–IST; the Airbus A350-900 was the most common aircraft at 89% of departures; flights ran 86% full.
Departures
63
July 2026
Seats
20,507
both directions
Passengers
17,573
both directions
Load factor
85.7%
RPM ÷ ASM
Who flies BOS–IST?
Turkish Airlines was the only carrier to fly nonstop BOS–IST in July 2026 (63 departures).
- TK
Turkish Airlines
63 departures · 20,507 seats
Share of departures100.0%85.7%
Load
What plane flies BOS–IST?
In July 2026, the Airbus A350-900 flew 89% of BOS–IST departures — more than any other aircraft type.
- Airbus A350-900
56 departures · 86.9% load
88.9% - Airbus A330-200
6 departures · 89.7% load
9.5% - Boeing 777-300ER
1 departures · 0.0% load
1.6%
How has BOS–IST traffic changed?
Nonstop BOS–IST departures rose from 54 in August 2025 to 63 in July 2026.
Monthly nonstop BOS–IST traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
June 2026
60 departures · 16,805 passengers
86.2%
Load
July 2026
63 departures · 17,573 passengers
85.7%
Load
By direction
Each direction is filed separately — they rarely match.
IST → BOS
83.7% full
32 departures · 8,730 passengers
BOS → IST
87.7% full
31 departures · 8,843 passengers
Nonstop BOS–IST traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 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 July 2026, the Airbus A350-900 flew the largest share of departures (88.9%), 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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