Direct (nonstop) flights from Saint Louis to Boston
2 airlines fly nonstop from Saint Louis Airport (STL) to Boston Logan International Airport (BOS). It's 1,046 miles (1,684 km), about 2h 35m in the air. Operated by American Airlines, Southwest Airlines.
American Airlines
Southwest Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AA
American Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Boston with one stop · direct emits 177 kg CO₂ per passenger
Looking for the return flight?
BOS → STL: Flights from Boston to Saint LouisOther direct flights from Saint Louis
Direct flights from Boston (BOS)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Boston?
A nonstop flight from Saint Louis (STL) to Boston (BOS) takes approximately 2 hours and 35 minutes. The distance is 1,046 miles (1,684 km).
Which airlines fly nonstop from Saint Louis to Boston?
2 airlines: American Airlines, Southwest Airlines.
Is there a nonstop flight from Saint Louis to Boston?
Yes. 2 airlines: American Airlines, Southwest Airlines.
How far is Saint Louis from Boston?
The flight distance from Saint Louis to Boston is 1,046 miles (1,684 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from Saint Louis to Boston?
At 2h 35m, 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 Boston?
Roughly 177 kg CO2 per passenger one-way. That's about the same as driving 885 km.
Is the return flight from Boston 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 Boston?
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.