Chicago (ORD) to Saint Louis (STL) flights
2 airlines fly nonstop from Chicago (ORD) to Saint Louis (STL): American Airlines and United Airlines. The two airports are 258 miles (416 km) apart. American Airlines is in oneworld and United Airlines is in Star Alliance. There are also 12 ways to fly it with one stop, through Milwaukee, Kansas City and Detroit and more.
Airlines flying nonstop from ORD to STL
- American Airlinesoneworld · bookable with 9 programsWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book ORD to STL with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
ORD to STL with one stop
12 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Milwaukee (MKE)American Airlines and United Airlines, then Southwest Airlines
- Via Kansas City (MCI)American Airlines and United Airlines, then Southwest Airlines
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Nashville (BNA)American Airlines and United Airlines, then Southwest Airlines
- Via Columbus (CMH)American Airlines and United Airlines, then Southwest Airlines
- Via Omaha (OMA)American Airlines and United Airlines, then Southwest Airlines
- Via Minneapolis (MSP)Delta Air Lines the whole way+1
- Via Cleveland (CLE)American Airlines and United Airlines, then Southwest Airlines
- Via Pittsburgh (PIT)American Airlines and United Airlines, then Southwest Airlines
- Via Atlanta (ATL)Delta Air Lines and Frontier Airlines the whole way+1
- Via Toronto (YYZ)Air Canada the whole way
- Via Charlotte (CLT)American Airlines the whole way
ORD to STL: common questions
Which airlines fly nonstop from ORD to STL?
American Airlines (oneworld) and United Airlines (Star Alliance) fly nonstop from Chicago (ORD) to Saint Louis (STL).
How far is Chicago from Saint Louis by plane?
Chicago (ORD) and Saint Louis (STL) are 258 miles (416 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book ORD to STL award flights?
22 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, Alaska Atmos Rewards, American AAdvantage, ANA Mileage Club, Avianca LifeMiles, British Airways Club, Cathay Pacific Asia Miles and 14 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does ORD 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 ORD to STL with taxes and fees.
Where can I connect between Chicago and Saint Louis?
The most direct connections are through Milwaukee (MKE), Kansas City (MCI), Detroit (DTW), Nashville (BNA) and Columbus (CMH). On 5 of them the same airline flies both flights, for example Delta Air Lines through Detroit.
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.