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$265+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$383
(United Airlines)

One-way from

$265
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$452
From Casper Natrona County to San Diego
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One-way flight from Casper Natrona County to San Diego
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Highest demand for flights based on searches. 21% potential increase in price ($122 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 7/1511:29 amCPR - SAN
1 stop7h 03mUnited Airlines
Wed 7/236:45 amSAN - CPR
1 stop4h 54mUnited Airlines
Deal found 6/10$383

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 June 12, 2025.
Use the filters below to find and compare flights from Casper to San Diego that are best for you.

Fly from

Casper

Fly to

San Diego

Route

Depart

Return

Price

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Tue 7/15

11:29 am-5:32 pm

1 stop7h 03m

San Diego

Wed 7/23

6:45 am-12:39 pm

1 stop4h 54m

$383

CasperSan Diego

CPR - SAN

CPRSAN

Casper Natrona County

Mon 7/21

5:59 pm-10:14 pm

1 stop5h 15m

$265

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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.

Cheapflights Insights

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

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 June 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Food

6.6

Boarding

7.7

Entertainment

7.0

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Food

6.6

Boarding

7.7

Entertainment

7.0

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

  • 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 $383 on this airline. This flight start at 16% lower than the current average price 3 months from now.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Casper to San Diego (average of $286). Flying from Casper to San Diego in March is currently the most expensive (average of $366). 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.

See more FAQs

Traveling to a place near Casper?

Book flights to Casper if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$248Average$463FlexibilityNo cancel feeOn-time69%

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