$378+ Cheap flights from Rock Springs to San Diego (RKS - 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
RKS — SAN
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Best
Cheapest flights from Rock Springs to San DiegoExplore the most affordable flight options available from Rock Springs to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from Rock Springs to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/14. 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 9/265:25 am
RKS
- SAN
1 stop8h 30m
United Airlines
Tue 9/297:00 am
SAN
- RKS
1 stop5h 30m
United Airlines
Deal found 6/14![United Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Tue 8/185:05 am
RKS
- SAN
2 stops15h 50m
United Airlines
Sat 8/2212:41 pm
SAN
- RKS
2 stops8h 40m
United Airlines
Deal found 6/17![United Airlines logo]()
$389
Best flights from Rock Springs to San DiegoDiscover carefully curated flight deals from Rock Springs to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from Rock Springs to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/13. 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 9/265:25 am
RKS
- SAN
1 stop8h 30m
United Airlines
Tue 9/297:00 am
SAN
- RKS
1 stop5h 30m
United Airlines
Deal found 6/13![United Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Tue 8/185:05 am
RKS
- SAN
1 stop5h 00m
United Airlines
Sat 8/226:30 am
SAN
- RKS
1 stop6h 17m
United Airlines
Deal found 6/17![United Airlines logo]()
$378
Find flight deals from Rock Springs to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Rock Springs (RKS) 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 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $378 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Rock Springs 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 18, 2026.
Use the filters below to find and compare flights from Rock Springs to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Rock SpringsSan Diego
RKS - SAN
RKSSAN
Rock Springs Sweetwater County
Sat 9/26
5:25 am-12:55 pm
1 stop8h 30m
San Diego
Tue 9/29
7:00 am-1:30 pm
1 stop5h 30m
$378
Quickest round-trip
Rock SpringsSan Diego
RKS - SAN
RKSSAN
Rock Springs Sweetwater County
Tue 8/18
5:05 am-9:05 am
1 stop5h 00m
San Diego
Sat 8/22
6:30 am-1:47 pm
1 stop6h 17m
$378
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Rock Springs-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rock Springs-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rock Springs-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Rock Springs-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 Rock Springs-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 Rock Springs to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Rock Springs with our price prediction graph.
RKS-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 June 18, 2026.
Peruse reviews from past customers who have flown with United Airlines from Rock Springs to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Food
6.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Entertainment
7.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Food
6.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Related info for your journey
Find useful and relevant information for your journey from Rock Springs 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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Top airline flying from Rock Springs to San Diego
Discover the top airline that operate flights from Rock Springs 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 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$238 | Average$371 | FlexibilityNo cancel fee | On-time69% |