$216 Cheap Flights from Killeen (GRK) to St. Louis (STL)

View $216 flight on Tue, Jul 29, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Killeen to St. Louis (GRK-STL)

Prices were available within the past 7 days and start at $216 for one-way flights and $291 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, May 22 - Mon, May 26
GRK
Killeen
STL
St. Louis
$291 Roundtrip, found 17 hours ago
$291
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Thu, May 22 from Killeen to St. Louis, returning Mon, May 26, priced at $291 found 17 hours ago
American Airlines
Fri, Aug 22 - Sun, Aug 31
GRK
Killeen
STL
St. Louis
$296 Roundtrip, found 20 hours ago
$296
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Fri, Aug 22 from Killeen to St. Louis, returning Sun, Aug 31, priced at $296 found 20 hours ago
American Airlines
Fri, Aug 22 - Sun, Aug 31
GRK
Killeen
STL
St. Louis
$301 Roundtrip, found 1 day ago
$301
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Aug 22 from Killeen to St. Louis, returning Sun, Aug 31, priced at $301 found 1 day ago
American Airlines
Wed, Apr 30 - Wed, May 7
GRK
Killeen
STL
St. Louis
$305 Roundtrip, found 6 days ago
$305
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 30 from Killeen to St. Louis, returning Wed, May 7, priced at $305 found 6 days ago
American Airlines
Wed, Apr 30 - Wed, May 7
GRK
Killeen
STL
St. Louis
$310 Roundtrip, found 6 days ago
$310
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 30 from Killeen to St. Louis, returning Wed, May 7, priced at $310 found 6 days ago
American Airlines
Sat, May 24 - Mon, May 26
GRK
Killeen
STL
St. Louis
$351 Roundtrip, found 2 days ago
$351
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, May 24 from Killeen to St. Louis, returning Mon, May 26, priced at $351 found 2 days ago
American Airlines
Wed, Apr 30 - Wed, May 7
GRK
Killeen
STL
St. Louis
$351 Roundtrip, found 6 days ago
$351
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 30 from Killeen to St. Louis, returning Wed, May 7, priced at $351 found 6 days ago
American Airlines
Thu, Jul 17 - Tue, Jul 22
GRK
Killeen
STL
St. Louis
$356 Roundtrip, found 2 days ago
$356
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Jul 17 from Killeen to St. Louis, returning Tue, Jul 22, priced at $356 found 2 days ago
American Airlines
Thu, May 22 - Mon, May 26
GRK
Killeen
STL
St. Louis
$361 Roundtrip, found 17 hours ago
$361
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Thu, May 22 from Killeen to St. Louis, returning Mon, May 26, priced at $361 found 17 hours ago
American Airlines
Wed, Apr 30 - Wed, May 7
GRK
Killeen
STL
St. Louis
$365 Roundtrip, found 6 days ago
$365
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 30 from Killeen to St. Louis, returning Wed, May 7, priced at $365 found 6 days ago

Frequently asked questions

How much does a flight from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL) cost?
Discover the latest flight deals from GRK to STL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from GRK to STL?
The cheapest flights from GRK to STL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL)?
You can’t fly directly from Killeen, TX (GRK-Killeen-Fort Hood Regional) to Lambert-St. Louis Intl. Airport (STL). However, you’ll find other airports offering nonstop flights. Board your plane at Austin-Bergstrom Intl. Airport (AUS) and travel straight to St. Louis without any detours.
What is the cheapest airline that flies from GRK to STL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from GRK to STL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL)?
You’ll have to catch a flight with a layover if you’re traveling from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from GRK to STL?
Typically you’ll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL)?
Choose a flight from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from GRK to STL shortly before your trip is typically more expensive. But if there’s some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a GRK to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a GRK to STL flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the stress out of planning your trip. Just secure your flights and select from our extensive range of stays, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Killeen-Fort Hood Regional Airport (GRK) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can cancel or modify your GRK to STL flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline’s fees and policies on flight changes, or if you’d like further information, visit our Customer Service portal.
*Available to One Key members.