Portland (PDX) to Saint Louis (STL) flights
2 airlines fly nonstop from Portland (PDX) to Saint Louis (STL): Alaska Airlines and Southwest Airlines. The two airports are 1,703 miles (2,741 km) apart. Alaska Airlines is in oneworld. There are also 30 ways to fly it with one stop, through Kansas City, Denver and Salt Lake City and more.
Airlines flying nonstop from PDX to STL
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- Southwest AirlinesNot in an allianceWho books it
Book PDX to STL with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
PDX to STL with one stop
30 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Kansas City (MCI)Southwest Airlines the whole way
- Via Denver (DEN)Frontier Airlines, United Airlines and 1 more the whole way
+1 - Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Seattle (SEA)Alaska Airlines the whole way
- Via Minneapolis (MSP)Delta Air Lines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Las Vegas (LAS)Southwest Airlines and Frontier Airlines the whole way
- Via Sacramento (SMF)Southwest Airlines the whole way
- Via Dallas (DFW)American Airlines the whole way
- Via Dallas (DAL)Southwest Airlines the whole way
- Via Nashville (BNA)Alaska Airlines, then Southwest Airlines
- Via Phoenix (PHX)American Airlines and Southwest Airlines the whole way
- Via San Francisco (SFO)United Airlines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
PDX to STL: common questions
Which airlines fly nonstop from PDX to STL?
Alaska Airlines (oneworld) and Southwest Airlines fly nonstop from Portland (PDX) to Saint Louis (STL).
How far is Portland from Saint Louis by plane?
Portland (PDX) and Saint Louis (STL) are 1,703 miles (2,741 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book PDX to STL award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does PDX to STL cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for PDX to STL with taxes and fees.
Where can I connect between Portland and Saint Louis?
The most direct connections are through Kansas City (MCI), Denver (DEN), Salt Lake City (SLC), Seattle (SEA) and Minneapolis (MSP). On 23 of them the same airline flies both flights, for example Southwest Airlines through Kansas City.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.