Direct (nonstop) flights from Saint Louis to Philadelphia
2 airlines fly nonstop from Saint Louis Airport (STL) to Philadelphia International Airport (PHL). It's 813 miles (1,309 km), about 2h 13m in the air. Operated by American Airlines, Southwest Airlines.
American Airlines
Southwest Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AA
American Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Philadelphia with one stop · direct emits 151 kg CO₂ per passenger
Looking for the return flight?
PHL → STL: Flights from Philadelphia to Saint LouisOther direct flights from Saint Louis
Direct flights from Philadelphia (PHL)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Philadelphia?
A nonstop flight from Saint Louis (STL) to Philadelphia (PHL) takes approximately 2 hours and 13 minutes. The distance is 813 miles (1,309 km).
Which airlines fly nonstop from Saint Louis to Philadelphia?
2 airlines: American Airlines, Southwest Airlines.
Is there a nonstop flight from Saint Louis to Philadelphia?
Yes. 2 airlines: American Airlines, Southwest Airlines.
How far is Saint Louis from Philadelphia?
The flight distance from Saint Louis to Philadelphia 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 Saint Louis to Philadelphia?
At 2h 13m, 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 Philadelphia?
Roughly 151 kg CO2 per passenger one-way. That's about the same as driving 755 km.
Is the return flight from Philadelphia 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 Philadelphia?
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.