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Cheap flights from St. Louis to Casper from $358

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Casper

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:10 am - 8:59 amSTL  Lambert-St Louis-CPR Casper Natrona County
4h 49m1 stop Denver Intl
United Airlines Logo
3:11 pm - 11:44 pmCPR  Casper Natrona County-STL Lambert-St Louis
7h 33m1 stop Denver Intl
$358United Airlines
Thu, Oct 8 - Mon, Oct 12
United Airlines Logo
3:00 pm - 8:17 pmSTL  Lambert-St Louis-CPR Casper Natrona County
6h 17m1 stop Denver Intl
United Airlines Logo
10:30 am - 8:59 pmCPR  Casper Natrona County-STL Lambert-St Louis
9h 29m1 stop Denver Intl
$428United Airlines
Sat, Feb 6 - Wed, Feb 10
United Airlines Logo
3:00 pm - 6:37 pmSTL  Lambert-St Louis-CPR Casper Natrona County
4h 37m1 stop Denver Intl
United Airlines Logo
3:15 pm - 8:59 pmCPR  Casper Natrona County-STL Lambert-St Louis
4h 44m1 stop Denver Intl
$428United Airlines
Sat, Feb 6 - Wed, Feb 10
United Airlines Logo
9:22 am - 5:04 pmSTL  Lambert-St Louis-CPR Casper Natrona County
8h 42m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
1:25 pm - 8:59 pmCPR  Casper Natrona County-STL Lambert-St Louis
6h 34m1 stop Denver Intl
$434United Airlines
Sat, Feb 6 - Wed, Feb 10
United Airlines Logo
3:00 pm - 6:37 pmSTL  Lambert-St Louis-CPR Casper Natrona County
4h 37m1 stop Denver Intl
United Airlines Logo
9:10 am - 9:47 pmCPR  Casper Natrona County-STL Lambert-St Louis
11h 37m2 stops Denver Intl Chicago O'Hare Intl
$434United Airlines
Sat, Feb 6 - Wed, Feb 10

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United Airlines flights from St. Louis to Casper

Our best United Airlines deals on St. Louis to Casper flight tickets
United Airlines
Oct 8
STL5:10 amLambert-St Louis
4h 49m
1 stop
CPR8:59 amCasper Natrona County
Oct 12
CPR3:11 pmCasper Natrona County
7h 33m
1 stop
STL11:44 pmLambert-St Louis
$358
United Airlines
Feb 6
STL3:00 pmLambert-St Louis
4h 37m
1 stop
CPR6:37 pmCasper Natrona County
Feb 10
CPR3:15 pmCasper Natrona County
4h 44m
1 stop
STL8:59 pmLambert-St Louis
$428
United Airlines
Feb 6
STL9:22 amLambert-St Louis
8h 42m
2 stops
CPR5:04 pmCasper Natrona County
Feb 10
CPR1:25 pmCasper Natrona County
6h 34m
1 stop
STL8:59 pmLambert-St Louis
$434

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Thu 10/8

5:10 am-8:59 am

1 stop4h 49m

Casper Natrona County

Mon 10/12

3:11 pm-11:44 pm

1 stop7h 33m

$358

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Sat 2/6

3:00 pm-8:17 pm

1 stop6h 17m

Casper Natrona County

Wed 2/10

10:30 am-8:59 pm

1 stop9h 29m

$428
Quickest round-trip

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Sat 2/6

3:00 pm-6:37 pm

1 stop4h 37m

Casper Natrona County

Wed 2/10

3:15 pm-8:59 pm

1 stop4h 44m

$428

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Sat 2/6

9:22 am-5:04 pm

2 stops8h 42m

Casper Natrona County

Wed 2/10

1:25 pm-8:59 pm

1 stop6h 34m

$434

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Sat 2/6

3:00 pm-6:37 pm

1 stop4h 37m

Casper Natrona County

Wed 2/10

9:10 am-9:47 pm

2 stops11h 37m

$434
Cheapest one-way
Quickest one-way

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Thu 10/1

5:10 am-8:59 am

1 stop4h 49m

$428

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Thu 10/1

9:04 am-5:11 pm

2 stops9h 07m

$434

St. LouisCasper

STL Lambert-St Louis - CPR Casper Natrona County

STLCPR

Lambert-St Louis

Thu 10/1

12:20 pm-12:39 pm

3 stops25h 19m

$869

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Casper from

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

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 airline that flies from Lambert-St Louis to Casper Natrona County?

United Airlines is the most popular carrier operating from Lambert-St Louis to Casper Natrona County

When to book flights from St. Louis to Casper

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

Cheap St. Louis to Casper (STL to CPR) flight deals and tips

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

Best Price Found

$428

Fastest flight time

4h 37m

Direct flights

None
The best one-way flight to Casper from St. Louis in the past 72 hours is $428. The best round-trip flight deal from St. Louis to Casper found on momondo in the last 72 hours is $358.
The fastest flight from St. Louis to Casper takes 4h 37m
There are no direct flights from St. Louis to Casper. There are no popular flight routes from St. Louis to Casper.
Search flight deals

Frequently asked questions about flying from St. Louis to Casper

  • How far is Lambert-St Louis to Casper Natrona County by plane?

    Casper Natrona County is 891.0 mi away from Lambert-St Louis. 4h 37m is a normal flight duration for this route.

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

    Prices for flights from Lambert-St Louis Airport to Casper Natrona County Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Casper Natrona County Airport.

  • What documentation or ID do you need to fly to Casper Natrona County Airport?

    The travel and health documents required for your trip to Casper Natrona County Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Casper Natrona County Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to Casper

Compare and see reviews for airlines that fly from St. Louis to Casper with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $275Free CancellationRating
7.4
10,226 reviews
Search United Airlines flights

Traveling to a place near Casper?

Book flights to Casper if you plan to visit one of these locations
Rawlins
Douglas
Evansville

Why use momondo?

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

Finding the right flight to Casper from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Casper quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Casper from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between St. Louis and Casper by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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