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Casper

$308+ Cheap flights from San Diego to Casper (SAN - CPR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — CPR
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Cheap flight deals from San Diego to Casper

Cheapest flights from San Diego to Casper
Explore the most affordable flight options available from San Diego to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2026.

This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:33 pm
SAN
-
CPR
1 stop7h 00m
United Airlines
Sun 6/75:15 am
CPR
-
SAN
1 stop4h 47m
United Airlines
Deal found 3/18$367
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:45 pm
SAN
-
CPR
1 stop8h 27m
United Airlines
Sat 10/36:01 pm
CPR
-
SAN
1 stop5h 27m
United Airlines
Deal found 3/16$398
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:20 am
SAN
-
CPR
2 stops14h 39m
United Airlines
Mon 6/89:26 am
CPR
-
SAN
2 stops15h 28m
United Airlines
Deal found 3/16$424
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:30 am
SAN
-
CPR
1 stop5h 12m
United Airlines
Sat 7/181:23 pm
CPR
-
SAN
2 stops11h 31m
United Airlines
Deal found 3/17$464

Find flight deals from San Diego to Casper

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Casper (CPR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$367
(United Airlines)

One-way from

$308
(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
One-way flight from San Diego to Casper Natrona County
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Casper that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2026.
Use the filters below to find and compare flights from San Diego to Casper that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Thu 6/4

12:33 pm-8:33 pm

1 stop7h 00m

Casper Natrona County

Sun 6/7

5:15 am-9:02 am

1 stop4h 47m

$367

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Sun 7/12

8:45 am-7:15 pm

1 stop9h 30m

Casper Natrona County

Sat 7/18

9:26 am-8:01 pm

2 stops11h 35m

$419
Quickest round-trip

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Fri 6/5

4:07 pm-9:59 pm

1 stop4h 52m

Casper Natrona County

Sun 6/7

5:15 am-9:02 am

1 stop4h 47m

$479

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Thu 6/4

6:20 am-8:33 pm

2 stops13h 13m

Casper Natrona County

Mon 6/8

9:26 am-11:54 pm

2 stops15h 28m

$479
Cheapest one-way
Quickest one-way

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Sat 4/18

11:01 am-6:59 pm

2 stops6h 58m

$314

San DiegoCasper

SAN - CPR

SANCPR

San Diego

Tue 6/9

10:55 am-7:15 pm

1 stop7h 20m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on San Diego-Casper flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Casper flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

Get insights into the airlines that provide service to Casper. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Casper. Reviews last updated March 21, 2026.
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
9,452 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

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
9,452 reviews
United Airlines
7.4
Good
9,452 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

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

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?

    There are many flights that can get you from San Diego to Casper in 7h. 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 $309 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

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Top airline flying from San Diego to Casper

Discover the top airline that operate flights from San Diego to Casper. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$309Average$479FlexibilityNo cancel feeOn-time69%

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