Cheap Flights To St. Louis 2026

St. Louis Flights as Low as $141

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

Frontier Airlines
Frontier Airlines
Frontier Airlines
Fri, Nov 27 - Mon, Nov 30
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$169
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Nov 27 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Mon, Nov 30, priced at $169 found 2 days ago
Frontier Airlines
Wed, Oct 21 - Fri, Oct 30
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$175
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Fri, Oct 30, priced at $175 found 3 days ago
Frontier Airlines
Frontier Airlines
Thu, Oct 22 - Wed, Oct 28
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$187
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Oct 22 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Oct 28, priced at $187 found 3 days ago
Frontier Airlines
Wed, Oct 21 - Fri, Oct 23
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$193
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Fri, Oct 23, priced at $193 found 3 days ago
Frontier Airlines
Delta
Mon, Nov 23 - Tue, Dec 1
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$275
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Nov 23 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Tue, Dec 1, priced at $275 found 2 days ago
Southwest Airlines
Southwest Airlines
United
Tue, Oct 20 - Thu, Oct 22
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$355
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 20 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Oct 22, priced at $355 found 3 days ago
American Airlines
Tue, Oct 20 - Thu, Oct 22
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$355
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Oct 20 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Oct 22, priced at $355 found 3 days ago
United
Frontier Airlines
United
Sat, Nov 28 - Sun, Nov 29
CVG
Cincinnati - Northern Kentucky Intl.
STL
Lambert-St. Louis Intl.
$386
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 28 from Cincinnati - Northern Kentucky Intl. to Lambert-St. Louis Intl., returning Sun, Nov 29, priced at $386 found 1 day ago

Flights to

No matter how much you fight the travel bug, sometimes there's only one solution—to hop on the next plane to . AARP Travel Center Powered by Expedia® is here to help you cure that bug with great deals on flights and activities. With the best rates from Expedia combined with members-only discounts, AARP Travel offers members the best price in travel, guaranteed.

As an AARP member, you'll get exclusive rates on:

  • Hotels
  • Car rentals
  • Flights
  • Waived booking fees on flights

Whether this trip is for business or pleasure, we will help you get there (without breaking the bank).

Transportation at the Airport

Once you have reserved plane tickets to with AARP Travel, you may want to book a vehicle so you can get around the city. You can schedule a rental car under our cars tab and hop in the car right when you step out of the airport. For more information, check out the St. Louis (and vicinity) Car Rentals Guide.

Activities

Not sure where to start? Not to worry—there's so many things to do in this city. has so much to do, and we can help you get started.

If you're looking for some fun activities to do in , make sure you look at our "Things to Do in St. Louis (and vicinity)" page for excursions and activities for the whole crew.

Book Your Hotel in

has accommodation to choose from, so you will have little difficulty finding a place to stay close to all the things you want to see. If you need to stay close to the airport, or another attraction in , check out our hotel listings page. Remember that you'll get the best price out there when you stay with us.

Planning Your Flight to

Once you've decided when you want to visit, allow us here at AARP Travel to connect you with affordable tickets to . There is no better time than now to start booking your next trip. Book one of our flights today.