Boston (BOS) to Salt Lake City (SLC)
Flight time
≈ 5h 00m
Bearing
281° W
Boston (BOS) to Salt Lake City (SLC) is 2,100 miles (3,380 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–SLC
Filed traffic dataIn July 2026, Delta Air Lines operated the most departures, one of 3 carriers flying nonstop BOS–SLC; the Airbus A321neo was the most common aircraft at 77% of departures; flights ran 92% full.
Departures
238
July 2026
Seats
43,280
both directions
Passengers
39,642
both directions
Load factor
91.6%
RPM ÷ ASM
Who flies BOS–SLC?
Delta Air Lines operated the most nonstop BOS–SLC departures in July 2026 (184), one of 3 carriers on the route.
- DL
184 departures · 35,685 seats
Share of departures77.3%93.1%
Load
- B6
53 departures · 7,420 seats
Share of departures22.3%84.3%
Load
- WN
1 departures · 175 seats
Share of departures0.4%97.1%
Load
What plane flies BOS–SLC?
In July 2026, the Airbus A321neo flew 77% of BOS–SLC departures — more than any other aircraft type.
- Airbus A321neo
184 departures · 93.1% load
77.3% - Airbus A220-300
53 departures · 84.3% load
22.3% - Boeing 737-800
1 departures · 97.1% load
0.4%
How has BOS–SLC traffic changed?
Nonstop BOS–SLC departures rose from 230 in August 2025 to 238 in July 2026.
Monthly nonstop BOS–SLC traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
230 departures · 37,901 passengers
89.8%
Load
September 2025
185 departures · 30,767 passengers
86.5%
Load
October 2025
185 departures · 31,872 passengers
89.3%
Load
November 2025
194 departures · 27,631 passengers
75.9%
Load
December 2025
210 departures · 31,333 passengers
80.2%
Load
January 2026
171 departures · 26,002 passengers
81.0%
Load
February 2026
204 departures · 28,797 passengers
79.4%
Load
March 2026
264 departures · 39,070 passengers
83.7%
Load
April 2026
184 departures · 28,667 passengers
80.9%
Load
May 2026
184 departures · 30,744 passengers
86.2%
Load
June 2026
221 departures · 36,374 passengers
89.5%
Load
July 2026
238 departures · 39,642 passengers
91.6%
Load
By direction
Each direction is filed separately — they rarely match.
BOS → SLC
93.6% full
121 departures · 20,578 passengers
SLC → BOS
89.5% full
117 departures · 19,064 passengers
Nonstop BOS–SLC 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 Salt Lake City (SLC)?
BOS to SLC is 2,100 miles (3,380 km / 1,825 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to SLC?
A nonstop covers the 2,100-mile great-circle distance in roughly 5h 00m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–SLC?
In July 2026, the Airbus A321neo flew the largest share of departures (77.3%), followed by the Airbus A220-300 (22.3%).
What mileage do I earn flying BOS–SLC?
Distance-based programs credit off the 2,100-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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