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CPR - STL

$372 Find cheap flights from Casper to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Casper to St. Louis departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 5/25
Sat 6/1

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Casper to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Casper to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

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Cheap flight deals from Casper to St. Louis (CPR-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Casper to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:05 pm - 9:09 pmCPR-STL
26h 04m1 stop
1:42 pm - 10:01 pmSTL-CPR
9h 19m1 stop
$372United Airlines
Find Deal
Tue, May 14 - Wed, May 29
6:05 pm - 2:23 pmCPR-STL
19h 18m2 stops
1:42 pm - 10:01 pmSTL-CPR
9h 19m1 stop
$377United Airlines
Find Deal
Tue, May 14 - Wed, May 29
6:05 pm - 9:09 pmCPR-STL
26h 04m1 stop
1:42 pm - 10:01 pmSTL-CPR
9h 19m1 stop
$392United Airlines
Find Deal
Tue, May 14 - Wed, May 29
6:05 pm - 2:23 pmCPR-STL
19h 18m2 stops
1:42 pm - 10:01 pmSTL-CPR
9h 19m1 stop
$397United Airlines
Find Deal
Tue, May 14 - Wed, May 29
11:30 am - 9:09 pmCPR-STL
8h 39m1 stop
5:25 pm - 10:51 amSTL-CPR
18h 26m2 stops
$497United Airlines
Find Deal
Sun, May 12 - Fri, May 17
6:05 pm - 2:23 pmCPR-STL
19h 18m2 stops
8:05 am - 10:01 pmSTL-CPR
14h 56m2 stops
$535United Airlines
Find Deal
Tue, May 14 - Wed, May 29
7:16 am - 4:38 pmCPR-STL
8h 22m1 stop
1:37 pm - 10:51 amSTL-CPR
22h 14m1 stop
$546United Airlines
Find Deal
Sun, May 12 - Fri, May 17
6:05 pm - 2:23 pmCPR-STL
19h 18m2 stops
8:05 am - 10:01 pmSTL-CPR
14h 56m2 stops
$555United Airlines
Find Deal
Tue, May 14 - Wed, May 29
6:05 pm - 10:45 pmCPR-STL
27h 40m2 stops
5:25 pm - 10:51 amSTL-CPR
18h 26m2 stops
$622United Airlines
Find Deal
Sun, May 12 - Fri, May 17

Flights from Casper to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Casper to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Casper to St. Louis?

The average price of all flights from Casper to St. Louis clicked on KAYAK for each day over the last 12 months.
When flying from Casper to St. Louis, you should consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to Casper, you’ll find the best rates on Mondays and the most expensive ones on Thursdays.

Good to know

Cheapest flight

$372
Flight from Casper to St. Louis

When to book flights from Casper to St. Louis

Are your dates flexible? Find out the best times to travel from Casper to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Casper to St. Louis

  • What is the cheapest flight from Casper to St. Louis?

    In the last 3 days, the lowest price for a flight from Casper to St. Louis was $456 for a one-way ticket and $372 for a round-trip.

  • Do I need a passport to fly between Casper and St. Louis?

    A passport is not required to fly from Casper to St. Louis.

  • Which airports will I be using when flying from Casper to St. Louis?

    Casper and St. Louis are both served by 1 main airport. You will leave Casper from Casper Natrona County and will be arriving at Lambert-St Louis.

  • Which aircraft models fly most regularly from Casper to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Casper to St. Louis?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Casper and St. Louis, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Casper to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Casper to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Casper to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Casper is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Casper to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Casper with another airline. Booking your flights between Casper and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Casper to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Casper up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Casper to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Casper to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Casper to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 11234 reviews
7.7boarding
8.1crew
6.7food
7.1entertainment
7.2comfort
Airline reviews

So so. Terrible aircraft choice for that leg of the flight.

4.0 OkayANTHONY, Apr 2024HNL - SFO
Read more about United Airlines reviews

So so. Terrible aircraft choice for that leg of the flight.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Book cheap flights from Casper to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Casper to St. Louis found on KAYAK in the last 72 hours.
5/7Tue
1 stopDelta
6h 57mCPR-STL
$456
5/7Tue
2 stopsDelta
9h 22mCPR-STL
$461

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Last minute flights from Casper to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Casper to St. Louis that are departing in the next 10 days.
4/27Sat
multi-stopDelta
6h 31mCPR-STL
4/30Tue
multi-stopDelta
6h 00mSTL-CPR
$286
4/27Sat
multi-stopDelta
7h 18mCPR-STL
4/30Tue
multi-stopDelta
6h 00mSTL-CPR
$291
4/27Sat
multi-stopDelta
6h 31mCPR-STL
4/30Tue
multi-stopDelta
6h 00mSTL-CPR
$300
4/27Sat
multi-stopDelta
7h 18mCPR-STL
4/30Tue
multi-stopDelta
6h 00mSTL-CPR
$305
4/27Sat
multi-stopDelta
7h 18mCPR-STL
4/30Tue
multi-stopDelta
8h 24mSTL-CPR
$344
4/27Sat
multi-stopDelta
7h 18mCPR-STL
4/30Tue
multi-stopDelta
8h 24mSTL-CPR
$394

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Casper - St. Louis Flights

Departure:

Casper (CPR)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Casper

Cabin classes: