Cheap flights to St. Louis County

View €87 flight on Sat, 18 Apr 2026Opens in a new window

Popular airlines to St. Louis County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 15% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to St. Louis County

Prices were available within the past 7 days and start at €87 for one-way flights and €172 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€172 Return, just found
€172
Return
just found
Select Delta flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €172 just found
American Airlines
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€182 Return, just found
€182
Return
just found
Select American Airlines flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €182 just found
American Airlines
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€189 Return, just found
€189
Return
just found
Select American Airlines flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €189 just found
Delta
Mon, 20 Apr - Tue, 28 Apr
PDX
Portland
STL
St. Louis
€193 Return, found 1 day ago
€193
Return
found 1 day ago
Select Delta flight, departing Mon, 20 Apr from Portland to St. Louis, returning Tue, 28 Apr, priced at €193 found 1 day ago
United
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€212 Return, just found
€212
Return
just found
Select United flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €212 just found
American Airlines
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€214 Return, just found
€214
Return
just found
Select American Airlines flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €214 just found
United
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€216 Return, just found
€216
Return
just found
Select United flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €216 just found
United
Sat, 18 Apr - Mon, 20 Apr
ATL
Atlanta
STL
St. Louis
€220 Return, just found
€220
Return
just found
Select United flight, departing Sat, 18 Apr from Atlanta to St. Louis, returning Mon, 20 Apr, priced at €220 just found
Aer Lingus
Wed, 22 Apr - Wed, 29 Apr
DUB
Dublin
STL
St. Louis
€742 Return, found 5 days ago
€742
Return
found 5 days ago
Select Aer Lingus flight, departing Wed, 22 Apr from Dublin to St. Louis, returning Wed, 29 Apr, priced at €742 found 5 days ago
KLM
Fri, 10 Apr - Tue, 14 Apr
SOF
Sofia
STL
St. Louis
€794 Return, found 1 day ago
€794
Return
found 1 day ago
Select KLM flight, departing Fri, 10 Apr from Sofia to St. Louis, returning Tue, 14 Apr, priced at €794 found 1 day ago

Trending flights to St. Louis County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Wed, 22 Apr - Wed, 29 Apr
DUB
Dublin
STL
St. Louis
€742 Return, found 5 days ago
€742
Return
found 5 days ago
Select Aer Lingus flight, departing Wed, 22 Apr from Dublin to St. Louis, returning Wed, 29 Apr, priced at €742 found 5 days ago

Frequently asked questions

How do I find cheap flights to St. Louis County that have flexible change policies?
When it comes to travelling these days, flexibility is key. That's why we have a "No change fee" search function to help you track down cheap and flexible flights to St. Louis County. It's near the top left of your screen directly underneath the "Flexible change policies" heading.
Which airlines fly to St. Louis County?
When you're ready to lock in your seat to or near St. Louis County, these leading airlines are waiting to welcome you aboard:

  • Southwest Airlines - 2,214 flights to or near St. Louis County each month, including 2,214 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • American Airlines - 789 flights to or near St. Louis County each month, including 789 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 650 flights to or near St. Louis County each month, including 650 flights to Lambert-St. Louis Intl. Airport (STL) per month.

How can I find cheap tickets to St. Louis County?
An excellent strategy for scoring cheap fares is to be flexible with your travel dates. Begin with searching for your flight to St. Louis County, then click on the "flexible dates" box to see prices for nearby days. Want another good tip? Book ahead of time. To give you an idea of costs, €172 was the best price for a flight to St. Louis County in the last seven days.
How much is a flight to St. Louis County?
There were plenty of budget-friendly fares up for grabs in the last seven days, with the price of a return ticket to St. Louis County ranging between €172 and €794. Many lucky holiday makers nabbed one-way flights from Atlanta (ATL) for as low as €87.
What are the most popular airports to fly into in St. Louis County?
The principal gateway to St. Louis County, around 4,902 flights taxi into Lambert-St. Louis Intl. Airport (STL) each month. Search for an amazing deal, lock in your fare and get set to explore this fantastic region.
How much is a plane ticket to St. Louis County?
In the last seven days, flights to St. Louis County cost between €172 and €794. Prices depend on a number of things, particularly the departure time, airline, cabin class and how early you make your booking.
What months are the cheapest to book a flight to St. Louis County?
Reserve your ticket in February to enjoy the lowest-priced flights to St. Louis County. The festive month of December is usually the most expensive time to purchase an airfare.

Book with confidence

About St. Louis County

Expedia offers flights to St. Louis County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to St. Louis County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About St. Louis County

Explore a world of travel with Expedia

*Available to Expedia members.