Direct (nonstop) flights from Baltimore to Saint Louis
1 airline flys nonstop from Baltimore Washington International (BWI) to Saint Louis Airport (STL). It's 738 miles (1,188 km), about 2h 20m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Baltimore to Saint Louis with one stop · direct emits 137 kg CO₂ per passenger
Looking for the return flight?
STL → BWI: Flights from Saint Louis to BaltimoreOther direct flights from Baltimore
Direct flights from Saint Louis (STL)
Frequently Asked Questions
How long is the direct flight from Baltimore to Saint Louis?
A nonstop flight from Baltimore (BWI) to Saint Louis (STL) takes approximately 2 hours and 20 minutes. The distance is 738 miles (1,188 km).
Which airlines fly nonstop from Baltimore to Saint Louis?
Just Southwest Airlines.
Is there a nonstop flight from Baltimore to Saint Louis?
Yes. 1 airline: Southwest Airlines.
How far is Baltimore from Saint Louis?
The flight distance from Baltimore to Saint Louis is 738 miles (1,188 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as the length of Italy.
What type of aircraft flies from Baltimore to Saint Louis?
At 2h 20m, 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 Baltimore to Saint Louis?
Roughly 137 kg CO2 per passenger one-way. That's about the same as driving 685 km.
Is the return flight from Saint Louis to Baltimore 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 Baltimore 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 Baltimore Washington International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.