Boise (BOI) to San Diego (SAN)
Flight time
≈ 2h 18m
Bearing
184° S
Boise (BOI) to San Diego (SAN) is 750 miles (1,207 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOI–SAN
Filed traffic dataIn May 2026, SkyWest Airlines operated the most departures, one of 3 carriers flying nonstop BOI–SAN; the Embraer E175 was the most common aircraft at 50% of departures; flights ran 82% full.
Departures
202
May 2026
Seats
22,971
both directions
Passengers
18,729
both directions
Load factor
81.5%
RPM ÷ ASM
Who flies BOI–SAN?
SkyWest Airlines operated the most nonstop BOI–SAN departures in May 2026 (100), one of 3 carriers on the route.
- OO
100 departures · 7,600 seats
Share of departures49.5%85.5%
Load
- WN
78 departures · 11,294 seats
Share of departures38.6%84.5%
Load
- AS
24 departures · 4,077 seats
Share of departures11.9%65.8%
Load
What plane flies BOI–SAN?
In May 2026, the Embraer E175 flew 50% of BOI–SAN departures — more than any other aircraft type.
- Embraer E175
100 departures · 85.5% load
49.5% - Boeing 737-700
62 departures · 82.9% load
30.7% - Boeing 737 MAX 8
14 departures · 84.8% load
6.9% - Boeing 737-800
13 departures · 77.6% load
6.4% - Boeing 737-900ER
9 departures · 65.7% load
4.5% - Boeing 737 MAX 9
4 departures · 59.4% load
2.0%
How has BOI–SAN traffic changed?
Nonstop BOI–SAN departures rose from 181 in June 2025 to 202 in May 2026.
Monthly nonstop BOI–SAN traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
181 departures · 16,145 passengers
87.7%
Load
July 2025
185 departures · 16,642 passengers
88.8%
Load
August 2025
175 departures · 15,348 passengers
80.5%
Load
September 2025
170 departures · 14,712 passengers
67.1%
Load
October 2025
179 departures · 17,701 passengers
73.3%
Load
November 2025
180 departures · 17,304 passengers
70.7%
Load
December 2025
188 departures · 18,003 passengers
70.6%
Load
January 2026
146 departures · 11,834 passengers
63.7%
Load
February 2026
147 departures · 14,173 passengers
73.6%
Load
March 2026
208 departures · 19,952 passengers
71.8%
Load
April 2026
200 departures · 17,815 passengers
66.8%
Load
May 2026
202 departures · 18,729 passengers
81.5%
Load
By direction
Each direction is filed separately — they rarely match.
BOI → SAN
80.0% full
101 departures · 9,052 passengers
SAN → BOI
83.0% full
101 departures · 9,677 passengers
Nonstop BOI–SAN 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
Frequently asked
How far is Boise (BOI) from San Diego (SAN)?
BOI to SAN is 750 miles (1,207 km / 652 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOI to SAN?
A nonstop covers the 750-mile great-circle distance in roughly 2h 18m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOI–SAN?
In May 2026, the Embraer E175 flew the largest share of departures (49.5%), followed by the Boeing 737-700 (30.7%).
What mileage do I earn flying BOI–SAN?
Distance-based programs credit off the 750-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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