San Diego (SAN) to San Francisco (SFO)
Flight time
≈ 1h 42m
Bearing
321° NW
San Diego (SAN) to San Francisco (SFO) is 447 miles (719 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SAN–SFO
Filed traffic dataIn May 2026, United Airlines operated the most departures, one of 7 carriers flying nonstop SAN–SFO; the Embraer E175 was the most common aircraft at 28% of departures; flights ran 76% full.
Departures
1,200
May 2026
Seats
170,439
both directions
Passengers
129,285
both directions
Load factor
75.8%
RPM ÷ ASM
Who flies SAN–SFO?
United Airlines operated the most nonstop SAN–SFO departures in May 2026 (467), one of 7 carriers on the route.
- UA
467 departures · 80,538 seats
Share of departures38.9%72.5%
Load
- WN
271 departures · 42,865 seats
Share of departures22.6%77.5%
Load
- OO
193 departures · 14,616 seats
Share of departures16.1%86.2%
Load
- QX
148 departures · 11,248 seats
Share of departures12.3%84.6%
Load
- AS
61 departures · 10,480 seats
Share of departures5.1%62.1%
Load
- F9
56 departures · 10,404 seats
Share of departures4.7%85.8%
Load
- DL
4 departures · 288 seats
Share of departures0.3%49.0%
Load
What plane flies SAN–SFO?
In May 2026, the Embraer E175 flew 28% of SAN–SFO departures — more than any other aircraft type.
- Embraer E175
339 departures · 85.8% load
28.2% - Boeing 737-800
255 departures · 74.3% load
21.3% - Boeing 737 MAX 8
153 departures · 70.7% load
12.8% - Boeing 737-900ER
144 departures · 71.9% load
12.0% - Boeing 737 MAX 9
127 departures · 71.0% load
10.6% - Boeing 737-700
120 departures · 80.2% load
10.0% - Airbus A320neo
46 departures · 85.8% load
3.8% - Airbus A320
6 departures · 82.0% load
0.5% - Airbus A321neo
4 departures · 91.3% load
0.3% - Boeing 757-200
4 departures · 49.0% load
0.3% - Bombardier CRJ-200
2 departures · 0.0% load
0.2%
How has SAN–SFO traffic changed?
Nonstop SAN–SFO departures rose from 1,154 in June 2025 to 1,200 in May 2026.
Monthly nonstop SAN–SFO traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
1,154 departures · 148,307 passengers
92.0%
Load
July 2025
1,159 departures · 150,849 passengers
93.0%
Load
August 2025
1,186 departures · 144,350 passengers
86.8%
Load
September 2025
1,144 departures · 133,657 passengers
84.3%
Load
October 2025
1,315 departures · 157,003 passengers
82.7%
Load
November 2025
1,173 departures · 138,793 passengers
82.8%
Load
December 2025
1,156 departures · 135,580 passengers
84.7%
Load
January 2026
1,142 departures · 114,966 passengers
72.2%
Load
February 2026
1,029 departures · 110,258 passengers
78.8%
Load
March 2026
1,119 departures · 129,355 passengers
83.9%
Load
April 2026
1,147 departures · 129,179 passengers
78.5%
Load
May 2026
1,200 departures · 129,285 passengers
75.8%
Load
By direction
Each direction is filed separately — they rarely match.
SFO → SAN
75.0% full
601 departures · 63,172 passengers
SAN → SFO
76.6% full
599 departures · 66,113 passengers
Nonstop SAN–SFO 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 San Diego (SAN) from San Francisco (SFO)?
SAN to SFO is 447 miles (719 km / 388 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SAN to SFO?
A nonstop covers the 447-mile great-circle distance in roughly 1h 42m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SAN–SFO?
In May 2026, the Embraer E175 flew the largest share of departures (28.2%), followed by the Boeing 737-800 (21.3%).
What mileage do I earn flying SAN–SFO?
Distance-based programs credit off the 447-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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