How long is the flight from San Diego to Casper?

There are many flights that can get you from San Diego to Casper in 5h 06m. Fly via United Airlines to get the fastest option. The distance from San Diego to Casper is about 913 mi.

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

Our cheapest airline available from San Diego to Casper is United Airlines. Our recent data shows that you can find tickets from as low as $308 on this airline.

In terms of precipitation, rainfall in Casper ranges from 0.5 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Casper when rainfall is around 0.5 in.

If weather is an important factor for your trip to Casper, 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 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 23.0 F).

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

When flying from San Diego to Casper, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on San Diego-Casper flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Casper flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Casper flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Diego-Casper flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Casper flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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

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

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

$338+ Flights from San Diego to Casper

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Cheap flight deals from San Diego to Casper

Best flights from San Diego to Casper
Discover carefully curated flight deals from San Diego to Casper that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 14, 2025.

Wed 1/71:00 pmSAN - CPR

1 stop5h 06mUnited Airlines

Sat 1/103:17 pmCPR - SAN

1 stop6h 25mUnited Airlines

Deal found 12/11

$338

Last-minute flights from San Diego to Casper
Discover last-minute flight deals from San Diego to Casper. Data last updated December 14, 2025 and is based on user searches.

Wed 1/71:00 pmSAN - CPR

1 stop5h 06mUnited Airlines

Sat 1/101:16 pmCPR - SAN

1 stop5h 12mUnited Airlines

Deal found 12/13

$338

Find flight deals from San Diego to Casper

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$338 (United Airlines)

Provider with most accurate pricing for San Diego-Casper Natrona County flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Diego-Casper Natrona County flights.

Search Deals

From San Diego to Casper Natrona County

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Wed 1/7

1:00 pm-7:06 pm

1 stop5h 06m

Casper Natrona County

Sat 1/10

3:17 pm-8:42 pm

1 stop6h 25m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from San Diego to Casper

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Casper in December.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Diego-Casper flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Casper flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Casper flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Diego-Casper flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Casper flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to Casper

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

Reviews of airlines servicing Casper

Read through reviews of airlines operating flights from San Diego to Casper, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,094 reviews

Reviews

1 / 20

10.0

Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

United Airlines

7.4

Good

9,094 reviews

United Airlines

7.4

Good

9,094 reviews

Reviews

1 / 20

10.0

Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

Related info for your journey

How long is the flight from San Diego to Casper?
There are many flights that can get you from San Diego to Casper in 5h 06m. Fly via United Airlines to get the fastest option. The distance from San Diego to Casper is about 913 mi.
What is the cheapest airline to fly from San Diego to Casper round-trip?
Our cheapest airline available from San Diego to Casper is United Airlines. Our recent data shows that you can find tickets from as low as $308 on this airline.
Can I find deals for flights from San Diego to Casper that include hotel bookings?
Yes. In addition to deals on San Diego to Casper flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Diego to Casper?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Casper.
Can I find deals for business class flights from San Diego to Casper?
Yes. Cheapflights offers flight deals from San Diego to Casper by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from San Diego to Casper

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$308	Average$438	FlexibilityNo cancel fee	On-time69%

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$338+ Cheap flights from San Diego to Casper (SAN - CPR)

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Diego to Casper with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Diego to Casper

Best flights from San Diego to CasperDiscover carefully curated flight deals from San Diego to Casper that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 14, 2025.

Discover carefully curated flight deals from San Diego to Casper that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 14, 2025.

Find flight deals from San Diego to Casper

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

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

Compare providers for flights from San Diego to Casper

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Casper in December.

Best time to book a flight from San Diego to Casper

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

Reviews of airlines servicing Casper

Read through reviews of airlines operating flights from San Diego to Casper, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Casper. 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 San Diego to Casper?

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

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

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

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

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 San Diego to Casper

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

Top airline flying from San Diego to Casper

100% Free

Book with Flexibility

Travel Smart

Best flights from San Diego to Casper
Discover carefully curated flight deals from San Diego to Casper that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 14, 2025.