Direct (nonstop) flights from Philadelphia to Saint Louis
2 airlines fly nonstop from Philadelphia International Airport (PHL) to Saint Louis Airport (STL). It's 813 miles (1,309 km), about 2h 37m in the air. Operated by American Airlines, Southwest Airlines.
American Airlines
Southwest Airlines
Route data last updated: May 28, 2026
Airlines with non-stop flights
AA
American Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Philadelphia to Saint Louis with one stop · direct emits 151 kg CO₂ per passenger
Looking for the return flight?
STL → PHL: Flights from Saint Louis to PhiladelphiaOther direct flights from Philadelphia
Direct flights from Saint Louis (STL)
Frequently Asked Questions
How long is the direct flight from Philadelphia to Saint Louis?
A nonstop flight from Philadelphia (PHL) to Saint Louis (STL) takes approximately 2 hours and 37 minutes. The distance is 813 miles (1,309 km).
Which airlines fly nonstop from Philadelphia to Saint Louis?
2 airlines: American Airlines, Southwest Airlines.
Is there a nonstop flight from Philadelphia to Saint Louis?
Yes. 2 airlines: American Airlines, Southwest Airlines.
How far is Philadelphia from Saint Louis?
The flight distance from Philadelphia to Saint Louis is 813 miles (1,309 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Madrid.
What type of aircraft flies from Philadelphia to Saint Louis?
At 2h 37m, 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 Philadelphia to Saint Louis?
Roughly 151 kg CO2 per passenger one-way. That's about the same as driving 755 km.
Is the return flight from Saint Louis to Philadelphia 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 Philadelphia 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 Philadelphia International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.