Direct (nonstop) flights from Saint Louis to Pittsburgh
1 airline flys nonstop from Saint Louis Airport (STL) to Pittsburgh Airport (PIT). It's 552 miles (889 km), about 1h 35m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 29, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Pittsburgh with one stop · direct emits 102 kg CO₂ per passenger
Looking for the return flight?
PIT → STL: Flights from Pittsburgh to Saint LouisOther direct flights from Saint Louis
Direct flights from Pittsburgh (PIT)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Pittsburgh?
A nonstop flight from Saint Louis (STL) to Pittsburgh (PIT) takes approximately 1 hours and 35 minutes. The distance is 552 miles (889 km).
Which airlines fly nonstop from Saint Louis to Pittsburgh?
Just Southwest Airlines.
Is there a nonstop flight from Saint Louis to Pittsburgh?
Yes. 1 airline: Southwest Airlines.
How far is Saint Louis from Pittsburgh?
The flight distance from Saint Louis to Pittsburgh is 552 miles (889 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Saint Louis to Pittsburgh?
At 1h 35m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Saint Louis to Pittsburgh?
Roughly 102 kg CO2 per passenger one-way. That's about the same as driving 510 km.
Is the return flight from Pittsburgh 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 Pittsburgh?
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.