Philadelphia (PHL) to Saint Louis (STL) flights
2 airlines fly nonstop from Philadelphia (PHL) to Saint Louis (STL): American Airlines and Southwest Airlines. The two airports are 812 miles (1,307 km) apart. American Airlines is in oneworld. There are also 30 ways to fly it with one stop, through Columbus, Pittsburgh and Baltimore and more.
Airlines flying nonstop from PHL to STL
- American Airlinesoneworld · bookable with 9 programsWho books it
- Southwest AirlinesNot in an allianceWho books it
Book PHL to STL with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American Airlines
PHL to STL with one stop
30 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Columbus (CMH)American Airlines, then Southwest Airlines
- Via Pittsburgh (PIT)American Airlines, then Southwest Airlines
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Dulles (IAD)United Airlines the whole way
- Via Washington (DCA)American Airlines the whole way
- Via Cleveland (CLE)American Airlines, then Southwest Airlines
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Nashville (BNA)Southwest Airlines the whole way
- Via Norfolk (ORF)American Airlines, then Southwest Airlines
- Via Toronto (YYZ)Air Canada the whole way
- Via Raleigh/Durham (RDU)American Airlines and Frontier Airlines, then Southwest Airlines
- Via Milwaukee (MKE)American Airlines, then Southwest Airlines
- Via Charlotte (CLT)American Airlines the whole way
PHL to STL: common questions
Which airlines fly nonstop from PHL to STL?
American Airlines (oneworld) and Southwest Airlines fly nonstop from Philadelphia (PHL) to Saint Louis (STL).
How far is Philadelphia from Saint Louis by plane?
Philadelphia (PHL) and Saint Louis (STL) are 812 miles (1,307 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book PHL 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 PHL 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 PHL to STL with taxes and fees.
Where can I connect between Philadelphia and Saint Louis?
The most direct connections are through Columbus (CMH), Pittsburgh (PIT), Baltimore (BWI), Dulles (IAD) and Washington (DCA). On 14 of them the same airline flies both flights, for example Southwest Airlines through Baltimore.
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.