Direct (nonstop) flights from Portland to Saint Louis
2 airlines fly nonstop from Portland International (PDX) to Saint Louis Airport (STL). It's 1,707 miles (2,747 km), about 3h 47m in the air. Operated by Alaska Airlines, Southwest Airlines.
Alaska Airlines
Southwest Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AS
Alaska Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Portland to Saint Louis with one stop · direct emits 288 kg CO₂ per passenger
Looking for the return flight?
STL → PDX: Flights from Saint Louis to PortlandOther direct flights from Portland
Direct flights from Saint Louis (STL)
Frequently Asked Questions
How long is the direct flight from Portland to Saint Louis?
A nonstop flight from Portland (PDX) to Saint Louis (STL) takes approximately 3 hours and 47 minutes. The distance is 1,707 miles (2,747 km).
Which airlines fly nonstop from Portland to Saint Louis?
2 airlines: Alaska Airlines, Southwest Airlines.
Is there a nonstop flight from Portland to Saint Louis?
Yes. 2 airlines: Alaska Airlines, Southwest Airlines.
How far is Portland from Saint Louis?
The flight distance from Portland to Saint Louis is 1,707 miles (2,747 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Portland to Saint Louis?
At 3h 47m, 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 Portland to Saint Louis?
Roughly 288 kg CO2 per passenger one-way. That's about the same as driving 1,440 km.
Is the return flight from Saint Louis to Portland 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 Portland 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 Portland International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.