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Cheap flights from St. Louis to Amarillo from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Amarillo departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Amarillo

Cheap round-trip flights

United Airlines Logo
6:15 am - 2:08 pmSTL-AMA
7h 53m1 stop
United Airlines Logo
12:01 pm - 6:50 pmAMA-STL
6h 49m1 stop
$467United Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 5
United Airlines Logo
8:20 am - 2:08 pmSTL-AMA
5h 48m1 stop
United Airlines Logo
9:00 am - 6:23 pmAMA-STL
9h 23m2 stops
$472United Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 5
United Airlines Logo
6:35 am - 5:02 pmSTL-AMA
10h 27m2 stops
United Airlines Logo
9:00 am - 6:23 pmAMA-STL
9h 23m2 stops
$477United Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 5

United Airlines flights from St. Louis to Amarillo

Our best United Airlines deals on St. Louis to Amarillo flight tickets
United Airlines
Sep 1
STL6:15 amLambert-St Louis
7h 53m
1 stop
AMA2:08 pmAmarillo
Sep 5
AMA12:01 pmAmarillo
6h 49m
1 stop
STL6:50 pmLambert-St Louis
$467
Find similar
United Airlines
Sep 1
STL8:20 amLambert-St Louis
5h 48m
1 stop
AMA2:08 pmAmarillo
Sep 5
AMA9:00 amAmarillo
9h 23m
2 stops
STL6:23 pmLambert-St Louis
$472
Find similar
United Airlines
Sep 1
STL6:35 amLambert-St Louis
10h 27m
2 stops
AMA5:02 pmAmarillo
Sep 5
AMA9:00 amAmarillo
9h 23m
2 stops
STL6:23 pmLambert-St Louis
$477
Find similar

Southwest flights from St. Louis to Amarillo

Our best Southwest deals on St. Louis to Amarillo flight tickets
Southwest
Aug 23
STL1:00 pmLambert-St Louis
6h 00m
1 stop
AMA7:00 pmAmarillo
Aug 25
AMA4:45 pmAmarillo
6h 25m
1 stop
STL11:10 pmLambert-St Louis
$596
Find similar
Southwest
Aug 23
STL6:35 amLambert-St Louis
4h 10m
1 stop
AMA10:45 amAmarillo
Aug 25
AMA5:40 amAmarillo
7h 45m
2 stops
STL1:25 pmLambert-St Louis
$601
Find similar
Southwest
Aug 23
STL5:45 amLambert-St Louis
8h 15m
2 stops
AMA2:00 pmAmarillo
Aug 25
AMA9:35 amAmarillo
7h 50m
2 stops
STL5:25 pmLambert-St Louis
$606
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Amarillo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from St. Louis to Amarillo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Mon 9/1

6:15 am-2:08 pm

1 stop7h 53m

Amarillo

Fri 9/5

12:01 pm-6:50 pm

1 stop6h 49m

$467

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Mon 9/1

8:20 am-2:08 pm

1 stop5h 48m

Amarillo

Fri 9/5

9:00 am-6:23 pm

2 stops9h 23m

$472

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Mon 9/1

6:35 am-5:02 pm

2 stops10h 27m

Amarillo

Fri 9/5

9:00 am-6:23 pm

2 stops9h 23m

$477

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Wed 9/24

5:18 am-9:44 am

1 stop4h 26m

$129

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Wed 9/24

6:10 am-1:46 pm

2 stops7h 36m

$134

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Mon 10/20

7:41 pm-9:45 am

1 stop14h 04m

$147

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Sun 10/19

5:11 am-9:50 am

1 stop4h 39m

$154

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Sun 10/19

3:50 pm-12:05 am

2 stops8h 15m

$219

St. LouisAmarillo

STL - AMA

STLAMA

Lambert-St Louis

Mon 10/20

3:23 pm-2:09 pm

3 stops22h 46m

$379

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Amarillo from

How to get the cheapest flight ticket from St. Louis to Amarillo

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Amarillo?

The cheapest day to depart on your flight to Amarillo is on a Friday when prices can be found for as low as $306. This is often the case because there is less demand to fly during this day of the week. On the other hand, Wednesday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $408.

When to book flights from St. Louis to Amarillo

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Amarillo according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Amarillo (STL to AMA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Amarillo

Direct flights

None
There are no direct flights from St. Louis to Amarillo. There are no popular flight routes from St. Louis to Amarillo.
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  • How far is Lambert-St Louis to Amarillo by plane?

    The distance between Lambert-St Louis and Amarillo is about 683.1 mi. In terms of flight time, this usually takes a little over 5h 48m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Amarillo Airport?

    Prices for flights from Lambert-St Louis Airport to Amarillo Airport refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Amarillo Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Amarillo Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Amarillo Airport.

  • What documentation or ID do you need to fly to Amarillo Airport?

    The required travel and health documents for your Amarillo Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Amarillo Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from St. Louis to Amarillo?

Best airlines flying from St. Louis to Amarillo

Compare and see reviews for airlines that fly from St. Louis to Amarillo with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $280Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Amarillo?

Book flights to Amarillo if you plan to visit one of these locations
Dumas
Dalhart

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Amarillo?

It is quick and easy to find St. Louis to Amarillo flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Amarillo that suits you.

Can I find flights from St. Louis to Amarillo with flexible booking policies on momondo?

All flight searches from St. Louis to Amarillo on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Amarillo?

momondo provides multiple filters to help you find the best flight to Amarillo from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Amarillo right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Amarillo now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Amarillo and let you know when they change.

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