Direct (nonstop) flights from San Francisco to Saint Louis
2 airlines fly nonstop from San Francisco International (SFO) to Saint Louis Airport (STL). It's 1,735 miles (2,793 km), about 3h 55m in the air. Operated by United Airlines, Southwest Airlines.
United Airlines
Southwest Airlines
Route data last updated: May 28, 2026
Airlines with non-stop flights
UA
United Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from San Francisco to Saint Louis with one stop · direct emits 293 kg CO₂ per passenger
Looking for the return flight?
STL → SFO: Flights from Saint Louis to San FranciscoOther direct flights from San Francisco
Direct flights from Saint Louis (STL)
Frequently Asked Questions
How long is the direct flight from San Francisco to Saint Louis?
A nonstop flight from San Francisco (SFO) to Saint Louis (STL) takes approximately 3 hours and 55 minutes. The distance is 1,735 miles (2,793 km).
Which airlines fly nonstop from San Francisco to Saint Louis?
2 airlines: United Airlines, Southwest Airlines.
Is there a nonstop flight from San Francisco to Saint Louis?
Yes. 2 airlines: United Airlines, Southwest Airlines.
How far is San Francisco from Saint Louis?
The flight distance from San Francisco to Saint Louis is 1,735 miles (2,793 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from San Francisco to Saint Louis?
At 3h 55m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from San Francisco to Saint Louis?
Roughly 293 kg CO2 per passenger one-way. That's about the same as driving 1,465 km.
Is the return flight from Saint Louis to San Francisco also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from San Francisco to Saint Louis?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at San Francisco International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.