Direct (nonstop) flights from Saint Louis to San Francisco
2 airlines fly nonstop from Saint Louis Airport (STL) to San Francisco International (SFO). It's 1,735 miles (2,793 km), about 4h 30m 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 Saint Louis to San Francisco with one stop · direct emits 293 kg CO₂ per passenger
Looking for the return flight?
SFO → STL: Flights from San Francisco to Saint LouisOther direct flights from Saint Louis
Direct flights from San Francisco (SFO)
Frequently Asked Questions
How long is the direct flight from Saint Louis to San Francisco?
A nonstop flight from Saint Louis (STL) to San Francisco (SFO) takes approximately 4 hours and 30 minutes. The distance is 1,735 miles (2,793 km).
Which airlines fly nonstop from Saint Louis to San Francisco?
2 airlines: United Airlines, Southwest Airlines.
Is there a nonstop flight from Saint Louis to San Francisco?
Yes. 2 airlines: United Airlines, Southwest Airlines.
How far is Saint Louis from San Francisco?
The flight distance from Saint Louis to San Francisco is 1,735 miles (2,793 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Saint Louis to San Francisco?
At 4h 30m, 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 Saint Louis to San Francisco?
Roughly 293 kg CO2 per passenger one-way. That's about the same as driving 1,465 km.
Is the return flight from San Francisco to Saint Louis 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 Saint Louis to San Francisco?
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 Saint Louis Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.