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

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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SAN
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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Cheap flight deals from Casper to San Diego

Cheapest flights from Casper to San Diego
Explore the most affordable flight options available from Casper to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.

This United Airlines deal was found by Cheapflights users on 4/27. 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.
Fri 5/156:10 pm
CPR
-
SAN
1 stop5h 06m
United Airlines
Tue 5/194:04 pm
SAN
-
CPR
1 stop5h 06m
United Airlines
Deal found 4/27$343
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/129:00 am
CPR
-
SAN
1 stop6h 56m
United Airlines
Sat 5/166:32 am
SAN
-
CPR
1 stop5h 09m
United Airlines
Deal found 4/27$358
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/19:25 am
CPR
-
SAN
1 stop8h 35m
United Airlines
Sat 9/512:33 pm
SAN
-
CPR
1 stop5h 41m
United Airlines
Deal found 4/27$408
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Fri 5/296:13 pm
CPR
-
SAN
1 stop5h 12m
United Airlines
Wed 6/1010:55 am
SAN
-
CPR
1 stop8h 38m
United Airlines
Deal found 4/25$423
This United Airlines deal was found by Cheapflights users on 4/25. 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 6/211:21 am
CPR
-
SAN
2 stops13h 33m
United Airlines
Wed 6/1010:55 am
SAN
-
CPR
1 stop8h 38m
United Airlines
Deal found 4/25$444

Find flight deals from Casper to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Casper (CPR) to San Diego (SAN). 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 April 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$343
(United Airlines)

One-way from

$308
(United Airlines)
Provider with most accurate pricing for Casper Natrona County-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Casper Natrona County-San Diego flights.
Search Deals
From Casper Natrona County to San Diego
Search Deals
One-way flight from Casper Natrona County to San Diego
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Casper to San Diego 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 April 29, 2026.
Use the filters below to find and compare flights from Casper to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Tue 5/12

9:00 am-2:56 pm

1 stop6h 56m

San Diego

Sat 5/16

6:32 am-12:41 pm

1 stop5h 09m

$358

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Fri 5/15

6:10 pm-10:16 pm

1 stop5h 06m

San Diego

Tue 5/19

10:55 am-8:17 pm

2 stops8h 22m

$386

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Tue 9/1

8:45 am-5:00 pm

1 stop9h 15m

San Diego

Sat 9/5

12:33 pm-7:14 pm

1 stop5h 41m

$408

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Fri 5/29

6:13 pm-10:25 pm

1 stop5h 12m

San Diego

Wed 6/10

10:55 am-8:33 pm

1 stop8h 38m

$423
Cheapest one-way
Quickest one-way

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Sun 5/31

6:13 pm-10:25 pm

1 stop5h 12m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Sorted by cheapest first

Compare providers for flights from Casper to San Diego

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 Casper to San Diego in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Casper-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Casper-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Casper-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Casper-San Diego 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 Casper-San Diego 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 Casper to San Diego

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

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated April 29, 2026.
Read reviews from past customers who have flown United Airlines from Casper to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,680 reviews
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

    United Airlines can get you from Casper to San Diego in just under 6h 56m. Your travel time can differ by up to . Casper and San Diego are separated by a distance of 913 mi.

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

    Our cheapest airline available from Casper to San Diego is United Airlines. Our recent data shows that you can find tickets from as low as $268 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Casper to San Diego 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
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Julian
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Top airline flying from Casper to San Diego

Discover the top airline that operate flights from Casper to San Diego. 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 April 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$268Average$375FlexibilityNo cancel feeOn-time69%

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