San Francisco (SFO) to St Louis (STL)
Flight time
≈ 4h 16m
Bearing
77° E
San Francisco (SFO) to St Louis (STL) is 1,731 miles (2,786 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SFO–STL
Filed traffic dataIn July 2026, United Airlines operated the most departures, one of 3 carriers flying nonstop SFO–STL; the Boeing 737 MAX 8 was the most common aircraft at 53% of departures; flights ran 84% full.
Departures
123
July 2026
Seats
20,570
both directions
Passengers
17,195
both directions
Load factor
83.6%
RPM ÷ ASM
Who flies SFO–STL?
United Airlines operated the most nonstop SFO–STL departures in July 2026 (62), one of 3 carriers on the route.
- UA
62 departures · 10,500 seats
Share of departures50.4%72.8%
Load
- WN
60 departures · 9,968 seats
Share of departures48.8%94.9%
Load
- AA
1 departures · 102 seats
Share of departures0.8%87.3%
Load
What plane flies SFO–STL?
In July 2026, the Boeing 737 MAX 8 flew 53% of SFO–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
65 departures · 81.5% load
52.8% - Boeing 737-800
27 departures · 93.5% load
21.9% - Boeing 737-700
14 departures · 94.8% load
11.4% - Boeing 737 MAX 9
14 departures · 67.2% load
11.4% - Boeing 737-900ER
2 departures · 72.6% load
1.6% - Airbus A321
1 departures · 87.3% load
0.8%
How has SFO–STL traffic changed?
Nonstop SFO–STL departures fell from 124 in August 2025 to 123 in July 2026.
Monthly nonstop SFO–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
124 departures · 16,401 passengers
89.3%
Load
September 2025
120 departures · 14,596 passengers
86.8%
Load
October 2025
123 departures · 13,681 passengers
85.0%
Load
November 2025
114 departures · 15,723 passengers
81.5%
Load
December 2025
121 departures · 13,773 passengers
78.4%
Load
January 2026
133 departures · 10,837 passengers
75.3%
Load
February 2026
119 departures · 11,034 passengers
78.8%
Load
March 2026
117 departures · 11,926 passengers
85.4%
Load
April 2026
150 departures · 13,472 passengers
85.4%
Load
May 2026
143 departures · 15,058 passengers
85.7%
Load
June 2026
121 departures · 17,529 passengers
86.5%
Load
July 2026
123 departures · 17,195 passengers
83.6%
Load
By direction
Each direction is filed separately — they rarely match.
STL → SFO
81.3% full
62 departures · 8,681 passengers
SFO → STL
86.0% full
61 departures · 8,514 passengers
Nonstop SFO–STL 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 San Francisco (SFO) from St Louis (STL)?
SFO to STL is 1,731 miles (2,786 km / 1,504 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SFO to STL?
A nonstop covers the 1,731-mile great-circle distance in roughly 4h 16m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SFO–STL?
In July 2026, the Boeing 737 MAX 8 flew the largest share of departures (52.8%), followed by the Boeing 737-800 (21.9%).
What mileage do I earn flying SFO–STL?
Distance-based programs credit off the 1,731-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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