$323+ Cheap flights from Casper to San Diego (CPR - SAN)
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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — SAN
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Casper to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Casper to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Casper to San DiegoExplore 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 October 30, 2026.
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 October 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 11/148:20 am -
1 stop5h 36m
Wed 11/188:45 am -
1 stop7h 32m
Deal found 10/29![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 12/53:24 pm -
1 stop6h 17m
Wed 12/911:00 am -
1 stop6h 59m
Deal found 10/29![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/26. 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 10/278:55 am -
1 stop5h 01m
Tue 11/106:45 am -
1 stop5h 03m
Deal found 10/26![United Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 11/218:20 am -
1 stop7h 35m
Sat 11/286:45 am -
1 stop5h 03m
Deal found 10/28![United Airlines logo]()
$527
Best flights from Casper to San DiegoDiscover carefully curated flight deals from Casper to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Casper to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 1/279:00 am -
1 stop5h 14m
Wed 2/36:20 am -
2 stops10h 00m
Deal found 10/27![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 11/145:15 am -
1 stop4h 55m
Wed 11/1812:37 pm -
2 stops8h 22m
Deal found 10/29![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 12/53:24 pm -
1 stop6h 17m
Wed 12/911:00 am -
1 stop6h 59m
Deal found 10/29![United Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 11/218:20 am -
1 stop7h 35m
Sat 11/286:45 am -
1 stop5h 03m
Deal found 10/28![United Airlines logo]()
$527
Last-minute flights from Casper to San DiegoDiscover last-minute flight deals from Casper to San Diego. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Casper to San Diego. Data last updated October 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 11/148:20 am -
1 stop5h 36m
Wed 11/188:45 am -
1 stop7h 32m
Deal found 10/29![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 11/218:20 am -
1 stop7h 35m
Sat 11/286:45 am -
1 stop5h 03m
Deal found 10/28![United Airlines logo]()
$527
One-way flights from Casper to San DiegoSearch for one-way flight options from Casper to San Diego. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Casper to San Diego. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/295:15 am -
1 stop4h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![United Airlines logo]()
$323
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $358 (United Airlines) |
One-way from | $323 (United Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $396 |
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 7,457,451 searches. Data last updated October 30, 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
Cheapest round-trip
Quickest round-trip
CasperSan Diego
CPR Casper Natrona County - SAN San Diego
CPRSAN
Casper Natrona County
Tue 12/29
5:15 am-9:14 am
1 stop4h 59m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$323
CasperSan Diego
CPR Casper Natrona County - SAN San Diego
CPRSAN
Casper Natrona County
Wed 1/27
9:00 am-1:14 pm
1 stop5h 14m
San Diego
Wed 2/3
6:20 am-5:20 pm
2 stops10h 00m
$364
CasperSan Diego
CPR Casper Natrona County - SAN San Diego
CPRSAN
Casper Natrona County
Sat 11/14
5:15 am-9:10 am
1 stop4h 55m
San Diego
Wed 11/18
12:37 pm-9:59 pm
2 stops8h 22m
$414
CasperSan Diego
CPR Casper Natrona County - SAN San Diego
CPRSAN
Casper Natrona County
Sat 12/5
3:24 pm-8:41 pm
1 stop6h 17m
San Diego
Wed 12/9
11:00 am-6:59 pm
1 stop6h 59m
$458
CasperSan Diego
CPR Casper Natrona County - SAN San Diego
CPRSAN
Casper Natrona County
Sat 11/21
8:20 am-2:55 pm
1 stop7h 35m
San Diego
Sat 11/28
6:45 am-12:48 pm
1 stop5h 03m
$527
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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.
CPR-SAN
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 October 30, 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.
Overall
7.3
Comfort
7.3
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Overall
7.3
Comfort
7.3
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
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Casper and San Diego flights
Browse other Casper and San Diego flight options. Last updated on October 30, 2026.
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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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$419 | FlexibilityNo cancel fee | On-time69% |