$308 Cheap Flights from Casper (CPR) to San Antonio (SAT)

View $308 flight on Thu, Jun 4, 2026Opens in a new window

Popular airlines from Casper, WY (CPR-Natrona County Intl.) to San Antonio International Airport (SAT)

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Cheap Flights from Casper to San Antonio (CPR-SAT)

Prices were available within the past 7 days and start at $308 for one-way flights and $308 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$308 Roundtrip, found 6 days ago
$308
Roundtrip
found 6 days ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $308 found 6 days ago
United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$318 Roundtrip, found 6 days ago
$318
Roundtrip
found 6 days ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $318 found 6 days ago
United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$320 Roundtrip, found 6 days ago
$320
Roundtrip
found 6 days ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $320 found 6 days ago
United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$328 Roundtrip, found 2 hours ago
$328
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $328 found 2 hours ago
United
Wed, Apr 15 - Wed, Apr 22
CPR
Casper
SAT
San Antonio
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select United flight, departing Wed, Apr 15 from Casper to San Antonio, returning Wed, Apr 22, priced at $334 found 2 days ago
United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$338 Roundtrip, found 2 hours ago
$338
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $338 found 2 hours ago
United
Mon, Jun 22 - Mon, Jun 29
CPR
Casper
SAT
San Antonio
$340 Roundtrip, found 10 hours ago
$340
Roundtrip
found 10 hours ago
Select United flight, departing Mon, Jun 22 from Casper to San Antonio, returning Mon, Jun 29, priced at $340 found 10 hours ago
United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$342 Roundtrip, found 3 days ago
$342
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $342 found 3 days ago
United
Tue, Aug 4 - Sat, Aug 8
CPR
Casper
SAT
San Antonio
$343 Roundtrip, found 2 hours ago
$343
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 4 from Casper to San Antonio, returning Sat, Aug 8, priced at $343 found 2 hours ago
United
Wed, Apr 8 - Sat, Apr 11
CPR
Casper
SAT
San Antonio
$345 Roundtrip, found 6 days ago
$345
Roundtrip
found 6 days ago
Select United flight, departing Wed, Apr 8 from Casper to San Antonio, returning Sat, Apr 11, priced at $345 found 6 days ago

Frequently asked questions

How much does a flight from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) cost?
You can find cheap one-way flights from $308 and cheap return flights from $308 Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) with Expedia. One-way flights usually range from $280 to $923, and return flights typically cost between $386 and $2127. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
April is the cheapest month to fly from Casper, WY (CPR) to San Antonio, TX (SAT), with average round-trip fares around $253. This price is about 32% lower than the average throughout the year, as April typically sees less travel activity. Other affordable months to consider are November and December.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Enter CPR to SAT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
United is one of the cheapest airlines offering connecting flights from Casper, WY (CPR) to San Antonio, TX (SAT) with a layover in Denver Intl. (DEN), starting from around $1,807 for a round-trip ticket. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
To find a cheap flight from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
For flights from Casper (CPR) to San Antonio (SAT), April and December are the best months to consider. Return flights average around $253, making it a cost-effective choice. April offers pleasant spring weather, while December is festive, adding to the overall travel experience.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from CPR to SAT. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
Flying from CPR to SAT with a connection usually takes about 4 hours 30 minutes, traveling roughly 1,024 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
First class seats are offered on the CPR to SAT route with United Airlines.
How do I earn miles on a Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight with Expedia?
It's easy to earn miles on a Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Antonio from Natrona County Intl. (CPR)?
If you're planning to travel to San Antonio from Natrona County Intl. (CPR), you can fly into San Antonio Intl. (SAT) Some flights may connect through major hubs like Denver Intl. (DEN) before reaching San Antonio. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) at the last minute?
Typically, booking a last minute flight from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight and hotel package?
Securing a Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) San Antonio Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.)?
If you booked your Casper, WY (CPR-Natrona County Intl.) to San Antonio, TX (SAT-San Antonio Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Natrona County Intl.
Destination airport
San Antonio Intl.
Airlines serving
United
Roundtrip price
$308
Distance
1024 mi

Book with confidence

Casper to San Antonio Flights

The cheapest times to fly from Casper to San Antonio

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Casper to San Antonio are during the month of April. You can find some of the cheapest flights from Casper to San Antonio with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Casper to San Antonio

Sunday is one of the best days to book for cheap flights from Casper to San Antonio: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Casper to San Antonio

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Casper to San Antonio in 2026. You can also book with separate airlines for your outbound and return journeys, from $308 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Casper to San Antonio flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Casper to San Antonio airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Casper to San Antonio Flights

*Flight schedules are subject to change.

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*Available to One Key members.