Direct flights from Portland to St Louis

Did you mean Flights from St Louis to Portland?

Portland

United States

PDX

Portland International Airport

St Louis

United States

STL

Lambert St Louis International Airport

Route: Nonstop service available
Distance: 1,704 miles
Marketing airlines: 4 airlines
Aircraft: 6 aircraft types
Dates: Oct 27, 2026 – Sep 29, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

Portland to St Louis route overview

Portland International Airport (PDX) serves Portland; Lambert St Louis International Airport (STL) serves St Louis.

The airports are 1,704 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from PDX to STL.

Marketing airlines listed in the current schedule, including codeshare sellers, are Alaska Airlines (AS), Sun Country (SY), United Airlines (UA) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 27, 2026 – Sep 29, 2027.

Marketing airlines on the Portland to St Louis route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

Airline alliance affiliations represented: Oneworld, Star Alliance

Aircraft flying from PDX to STL

Frequently asked questions

Which airports serve the Portland to St Louis route?

Portland International Airport (PDX) is the origin airport and Lambert St Louis International Airport (STL) is the destination airport.

How far is St Louis from Portland?

PDX and STL are approximately 1,704 miles apart by great-circle distance.

Are there direct flights from PDX to STL?

Yes. Roame's current schedule feed shows nonstop service from PDX to STL.

Which airlines market flights from PDX to STL?

Which aircraft fly from PDX to STL?

Aircraft listed in the current schedule include Airbus A320 (320), Boeing 737-800 (738), Boeing 737-800 Winglets (73H), Boeing 737-900 Winglets (73J), Boeing 737 MAX 8 (7M8) and 7S7.