What is the cheapest airline to fly from Killeen to St. Louis round-trip?

Currently priced at $299, American Airlines will fly you from Killeen to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip.

What is the cheapest day to fly from Killeen to St. Louis?

Travelers seeking maximum savings on their Killeen to St. Louis flight should consider departing on Friday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest day to fly round-trip from Killeen to St. Louis?

Travelers have found that booking a Friday departure is the best way to save up to 121% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest time of day to fly from GRK to STL?

It’s typically best to fly out from Killeen to St. Louis in the morning. Doing so could potentially save you 4% on the flight price compared to flying at noon, which is usually more expensive.

Can I find deals for flights from Killeen to St. Louis that include hotel bookings?

Yes. In addition to deals on Killeen to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Killeen to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Killeen to St. Louis.

Can I find deals for business class flights from Killeen to St. Louis?

Yes. Cheapflights offers flight deals from Killeen to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$299+ Flights from Killeen to St. Louis

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Cheap flight deals from Killeen to St. Louis

Round-trip from	$299 (American Airlines)

From Killeen Fort Hood Regional to Lambert-St Louis

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Find flight deals from Killeen to St. Louis

Cheapest flights from Killeen to St. Louis
Explore the most affordable flight options available from Killeen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

Fri 10/311:34 amGRK - STL

1 stop6h 48mAmerican Airlines

Sun 10/55:18 amSTL - GRK

1 stop4h 20mAmerican Airlines

Deal found 7/22

$299

Best flights from Killeen to St. Louis
Discover carefully curated flight deals from Killeen to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2025.

Fri 10/311:34 amGRK - STL

1 stop6h 48mAmerican Airlines

Sun 10/55:18 amSTL - GRK

1 stop4h 20mAmerican Airlines

Deal found 7/22

$299

Last-minute flights from Killeen to St. Louis
Discover last-minute flight deals from Killeen to St. Louis. Data last updated July 25, 2025 and is based on user searches.

Sat 8/25:16 amGRK - STL

1 stop4h 02mAmerican Airlines

Fri 8/85:15 amSTL - GRK

1 stop4h 46mAmerican Airlines

Deal found 7/23

$439

Fly from

Fly to

Route

Depart

Return

Price

KilleenSt. Louis

GRK - STL

GRKSTL

Killeen Fort Hood Regional

Fri 10/3

11:34 am-6:22 pm

1 stop6h 48m

Lambert-St Louis

Sun 10/5

5:18 am-9:38 am

1 stop4h 20m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Best time to book a flight from Killeen to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Killeen with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Killeen to St. Louis

What is the cheapest month to book a flight from Killeen to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Killeen to St. Louis (average of $311). Flying from Killeen to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown American Airlines from Killeen to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

6.0

Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

6.0

Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation

Related info for your journey

What is the cheapest airline to fly from Killeen to St. Louis round-trip?
Currently priced at $299, American Airlines will fly you from Killeen to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from Killeen to St. Louis that include hotel bookings?
Yes. In addition to deals on Killeen to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Killeen to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Killeen to St. Louis.
Can I find deals for business class flights from Killeen to St. Louis?
Yes. Cheapflights offers flight deals from Killeen to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Killeen to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Killeen to St. Louis (average of $311). Flying from Killeen to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Killeen to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$220	Average$397	FlexibilityNo cancel fee	On-time71%

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$299+ Cheap flights from Killeen to St. Louis (GRK - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Killeen to St. Louis with Cheapflights

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Cheap flight deals from Killeen to St. Louis

Round-trip from

Find flight deals from Killeen to St. Louis

Cheapest flights from Killeen to St. LouisExplore the most affordable flight options available from Killeen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

Explore the most affordable flight options available from Killeen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Killeen to St. Louis that are best for you.

Best time to book a flight from Killeen to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Killeen with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Killeen to St. Louis

What is the cheapest month to book a flight from Killeen to St. Louis?

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown American Airlines from Killeen to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Killeen to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Killeen to St. Louis round-trip?

Can I find deals for flights from Killeen to St. Louis that include hotel bookings?

How can I find direct flights from Killeen to St. Louis?

Can I find deals for business class flights from Killeen to St. Louis?

What is the cheapest month to book a flight from Killeen to St. Louis?

Traveling to a place near St. Louis?

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Alternative routes for Killeen to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Killeen to St. Louis

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Cheapest flights from Killeen to St. Louis
Explore the most affordable flight options available from Killeen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.