American Airlines flights to St Louis

We've compared every online travel agent and flight provider to find the cheapest American Airlines flight tickets to anywhere in the world, including St Louis.

At the moment, the best route to St Louis with American Airlines is from Calgary.

If you’re flexible on your departure dates, hit Whole month as you search. You'll see the cheapest month, and even day to fly to St Louis with American Airlines.

Got your eye on a specific flight to St Louis but not quite ready to book? No worries. We'll let you know when the price of the flight goes up or down so you can book when the time is just right. You're even able to watch specific American Airlines flights.

American Airlines might offer amendable tickets to St Louis Airport, which means you won't lose out if your booking has to be changed or cancelled.

Make sure you have the right travel insurance before flying to St Louis Airport. That way you can cover the costs of any unexpected events, such as delays or lost luggage.

To check whether there are any lower emissions flights available on your route, simply check the “only show flights with lower CO₂ emissions” box when you search for a flight with us.