How long is the flight from Casper to San Antonio?

United Airlines can get you from Casper to San Antonio in just under 8h 03m. Your travel time can differ by up to . There are 1024 mi between Casper and San Antonio.

What is the cheapest airline to fly from Casper to San Antonio round-trip?

Cheapflights users have booked flights from Casper to San Antonio round-trip from $300. Users have found that United Airlines is 32% cheaper than the other options available to this destination.

What is the cheapest day to fly from Casper to San Antonio?

Travelers seeking maximum savings on their Casper to San Antonio flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

If weather is an important factor for your trip to San Antonio, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What is the cheapest day to fly round-trip from Casper to San Antonio?

Monday flights are generally found to be more expensive for flights from Casper to San Antonio. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Antonio.

What is the cheapest month to fly from Casper to San Antonio?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, September can be a great choice for travel to San Antonio. Flights to San Antonio from Casper in September are about $444 on average during September, but can be found for as low as $293.

What is the cheapest time of day to fly from CPR to SAT?

It’s optimal to fly from Casper to San Antonio in the morning. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the afternoon.

Can I find deals for flights from Casper to San Antonio that include hotel bookings?

Yes. In addition to deals on Casper to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Casper to San Antonio?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Casper to San Antonio.

Can I find deals for business class flights from Casper to San Antonio?

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

$278+ Flights from Casper to San Antonio

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Cheap flight deals from Casper to San Antonio

Round-trip from	$278 (United Airlines)
Popular in	June
Cheapest in	September
Average price	$369

From Casper Natrona County to San Antonio

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($42 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Casper to San Antonio

Cheapest flights from Casper to San Antonio
Explore the most affordable flight options available from Casper to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Fri 9/261:32 pmCPR - SAT

1 stop6h 23mUnited Airlines

Tue 9/304:39 pmSAT - CPR

1 stop6h 33mUnited Airlines

Deal found 9/11

$278

Best flights from Casper to San Antonio
Discover carefully curated flight deals from Casper to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 9/261:32 pmCPR - SAT

2 stops8h 03mUnited Airlines

Tue 9/301:41 pmSAT - CPR

1 stop6h 06mUnited Airlines

Deal found 9/11

$284

Fri 1/161:16 pmCPR - SAT

1 stop6h 28mUnited Airlines

Mon 1/194:43 pmSAT - CPR

1 stop6h 31mUnited Airlines

Deal found 9/11

$328

Sat 2/281:25 pmCPR - SAT

1 stop6h 42mUnited Airlines

Wed 3/48:55 amSAT - CPR

1 stop9h 09mUnited Airlines

Deal found 9/9

$364

Last-minute flights from Casper to San Antonio
Discover last-minute flight deals from Casper to San Antonio. Data last updated September 11, 2025 and is based on user searches.

Fri 9/261:32 pmCPR - SAT

1 stop6h 23mUnited Airlines

Tue 9/304:39 pmSAT - CPR

1 stop6h 33mUnited Airlines

Deal found 9/11

$278

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

CasperSan Antonio

CPR - SAT

CPRSAT

Casper Natrona County

Fri 9/26

1:32 pm-10:35 pm

2 stops8h 03m

San Antonio

Tue 9/30

1:41 pm-6:47 pm

1 stop6h 06m

$284

CasperSan Antonio

CPR - SAT

CPRSAT

Casper Natrona County

Fri 1/16

1:16 pm-8:44 pm

1 stop6h 28m

San Antonio

Mon 1/19

4:43 pm-10:14 pm

1 stop6h 31m

$328

CasperSan Antonio

CPR - SAT

CPRSAT

Casper Natrona County

Sat 2/28

1:25 pm-9:07 pm

1 stop6h 42m

San Antonio

Wed 3/4

8:55 am-5:04 pm

1 stop9h 09m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Casper to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Casper 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 Casper to San Antonio

What is the cheapest month to book a flight from Casper to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Casper to San Antonio (average of $295). Flying from Casper to San Antonio in March is currently the most expensive (average of $376). 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 San Antonio

See what other customers who have flown with United Airlines from Casper to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

How long is the flight from Casper to San Antonio?
United Airlines can get you from Casper to San Antonio in just under 8h 03m. Your travel time can differ by up to . There are 1024 mi between Casper and San Antonio.
What is the cheapest airline to fly from Casper to San Antonio round-trip?
Cheapflights users have booked flights from Casper to San Antonio round-trip from $300. Users have found that United Airlines is 32% cheaper than the other options available to this destination.
Can I find deals for flights from Casper to San Antonio that include hotel bookings?
Yes. In addition to deals on Casper to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Casper to San Antonio?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Casper to San Antonio.
Can I find deals for business class flights from Casper to San Antonio?
Yes. Cheapflights offers flight deals from Casper to San Antonio 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 Casper to San Antonio?
Currently, August is the cheapest month in which you can book a flight from Casper to San Antonio (average of $295). Flying from Casper to San Antonio in March is currently the most expensive (average of $376). 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.

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Other flights to San Antonio

Top airline flying from Casper to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$300	Average$433	FlexibilityNo cancel fee	On-time69%

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$278+ Cheap flights from Casper to San Antonio (CPR - SAT)

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Casper to San Antonio with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Casper to San Antonio

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Casper to San Antonio

Cheapest flights from Casper to San AntonioExplore the most affordable flight options available from Casper to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Casper to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Casper to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Casper with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Casper to San Antonio

What is the cheapest month to book a flight from Casper to San Antonio?

Reviews of airlines servicing San Antonio

See what other customers who have flown with United Airlines from Casper to San Antonio have to say. You can also see how each airline compares 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 Casper to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Casper to San Antonio?

What is the cheapest airline to fly from Casper to San Antonio round-trip?

Can I find deals for flights from Casper to San Antonio that include hotel bookings?

How can I find direct flights from Casper to San Antonio?

Can I find deals for business class flights from Casper to San Antonio?

What is the cheapest month to book a flight from Casper to San Antonio?

Traveling to a place near San Antonio?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Casper to San Antonio

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

Top airline flying from Casper to San Antonio

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Book with Flexibility

Travel Smart

Cheapest flights from Casper to San Antonio
Explore the most affordable flight options available from Casper to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.