Boston (BOS) to Detroit (DTW)
Flight time
≈ 2h 04m
Bearing
273° W
Boston (BOS) to Detroit (DTW) is 631 miles (1,015 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–DTW
Filed traffic dataIn July 2026, Delta Air Lines operated the most departures, one of 4 carriers flying nonstop BOS–DTW; the Airbus A321 was the most common aircraft at 58% of departures; flights ran 89% full.
Departures
455
July 2026
Seats
79,792
both directions
Passengers
71,046
both directions
Load factor
89.0%
RPM ÷ ASM
Who flies BOS–DTW?
Delta Air Lines operated the most nonstop BOS–DTW departures in July 2026 (285), one of 4 carriers on the route.
- DL
285 departures · 53,936 seats
Share of departures62.6%90.9%
Load
- B6
168 departures · 25,452 seats
Share of departures36.9%85.0%
Load
- AF
Air France
1 departures · 328 seats
Share of departures0.2%95.1%
Load
- YX
1 departures · 76 seats
Share of departures0.2%94.7%
Load
What plane flies BOS–DTW?
In July 2026, the Airbus A321 flew 58% of BOS–DTW departures — more than any other aircraft type.
- Airbus A321
265 departures · 91.0% load
58.2% - Airbus A320
88 departures · 85.4% load
19.3% - Airbus A220-300
78 departures · 84.2% load
17.1% - Boeing 737-900ER
12 departures · 91.7% load
2.6% - Airbus A321neo
9 departures · 84.9% load
2.0% - Embraer E175
1 departures · 94.7% load
0.2% - Boeing 777-200
1 departures · 95.1% load
0.2% - Boeing 757-200
1 departures · 99.5% load
0.2%
How has BOS–DTW traffic changed?
Nonstop BOS–DTW departures fell from 498 in August 2025 to 455 in July 2026.
Monthly nonstop BOS–DTW traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
498 departures · 76,625 passengers
89.4%
Load
September 2025
491 departures · 69,564 passengers
82.1%
Load
October 2025
555 departures · 79,334 passengers
83.8%
Load
November 2025
454 departures · 60,533 passengers
76.6%
Load
December 2025
396 departures · 53,907 passengers
77.3%
Load
January 2026
311 departures · 39,345 passengers
75.7%
Load
February 2026
290 departures · 36,042 passengers
76.1%
Load
March 2026
360 departures · 49,178 passengers
81.0%
Load
April 2026
402 departures · 56,528 passengers
81.5%
Load
May 2026
431 departures · 63,170 passengers
86.7%
Load
June 2026
434 departures · 65,781 passengers
87.8%
Load
July 2026
455 departures · 71,046 passengers
89.0%
Load
By direction
Each direction is filed separately — they rarely match.
DTW → BOS
88.1% full
228 departures · 35,162 passengers
BOS → DTW
90.0% full
227 departures · 35,884 passengers
Nonstop BOS–DTW 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
Frequently asked
How far is Boston (BOS) from Detroit (DTW)?
BOS to DTW is 631 miles (1,015 km / 548 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to DTW?
A nonstop covers the 631-mile great-circle distance in roughly 2h 04m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–DTW?
In July 2026, the Airbus A321 flew the largest share of departures (58.2%), followed by the Airbus A320 (19.3%).
What mileage do I earn flying BOS–DTW?
Distance-based programs credit off the 631-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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