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$43+ Cheap flights from Riverside, CA to San Diego (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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to San Diego are usually found in February or March, booked 79 days in advance, depart on a Saturday or Thursday and return on a Thursday

Cheap flight deals from Riverside to San Diego

Cheapest flights from Riverside to San Diego
Explore the most affordable flight options available from Riverside to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:55 am
LAX
-
SAN
1 stop13h 09m
Frontier
Mon 8/248:59 pm
SAN
-
LAX
1 stop12h 30m
Frontier
Deal found 7/23$85
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:43 pm
LAX
-
SAN
1 stop23h 54m
Frontier
Mon 9/289:43 pm
SAN
-
LAX
1 stop13h 09m
Frontier
Deal found 7/22$88
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:55 am
LAX
-
SAN
1 stop13h 09m
Frontier
Wed 8/2610:00 am
SAN
-
LAX
1 stop11h 54m
Frontier
Deal found 7/23$89
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:15 am
LAX
-
SAN
1 stop10h 22m
Frontier
Thu 10/810:25 am
SAN
-
LAX
1 stop5h 27m
Frontier
Deal found 7/23$94
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:07 pm
LAX
-
SAN
1 stop19h 43m
Frontier
Wed 8/2610:00 am
SAN
-
LAX
1 stop11h 54m
Frontier
Deal found 7/22$97
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:30 am
LAX
-
SAN
1 stop13h 36m
Frontier
Sat 9/269:57 am
SAN
-
LAX
1 stop5h 18m
Frontier
Deal found 7/22$100
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:15 pm
LAX
-
SAN
1 stop5h 33m
Frontier
Mon 10/191:35 pm
SAN
-
LAX
1 stop5h 17m
Frontier
Deal found 7/22$101
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:55 am
LAX
-
SAN
1 stop13h 09m
Frontier
Thu 8/276:25 am
SAN
-
LAX
1 stop8h 55m
Frontier
Deal found 7/23$102
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/224:15 pm
LAX
-
SAN
1 stop4h 00m
Frontier
Mon 8/248:59 pm
SAN
-
LAX
1 stop12h 30m
Frontier
Deal found 7/23$103
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:15 pm
LAX
-
SAN
1 stop7h 29m
Frontier
Wed 9/94:36 pm
SAN
-
LAX
1 stop18h 16m
Frontier
Deal found 7/22$106
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:30 pm
LAX
-
SAN
1 stop4h 23m
Frontier
Mon 11/168:48 pm
SAN
-
LAX
1 stop19h 04m
Frontier
Deal found 7/23$109

Find flight deals from Riverside to San Diego

Keep the following information in mind while searching for Riverside to San Diego flight deals. Data was last updated July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$88
(Kiwi.com)

One-way from

$43
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$299
Provider with most accurate pricing for Los Angeles-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-San Diego flights.
Search Deals
From Riverside to San Diego
Search Deals
One-way flight from Riverside to San Diego
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside 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 July 24, 2026.
Use the filters below to find and compare flights from Riverside to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 8/19

5:00 pm-8:48 am

1 stop15h 48m

San Diego

Wed 8/26

1:00 pm-8:34 pm

1 stop7h 34m

$183

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 10/9

9:15 am-10:17 am

Nonstop1h 02m

San Diego

Sat 10/10

7:59 pm-9:14 pm

Nonstop1h 15m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 8/20

10:35 am-11:35 am

Nonstop1h 00m

San Diego

Mon 8/24

5:00 pm-6:03 pm

Nonstop1h 03m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Mon 8/17

6:20 pm-7:19 pm

Nonstop0h 59m

San Diego

Mon 8/24

3:00 pm-4:04 pm

Nonstop1h 04m

$199
Quickest round-trip

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 8/13

6:59 pm-7:55 pm

Nonstop0h 56m

San Diego

Sun 8/16

5:00 pm-6:03 pm

Nonstop1h 03m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 8/13

9:10 am-10:15 am

Nonstop1h 05m

San Diego

Sun 8/16

7:59 pm-9:14 pm

Nonstop1h 15m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 8/21

10:35 am-11:35 am

Nonstop1h 00m

San Diego

Fri 8/28

5:00 pm-6:03 pm

Nonstop1h 03m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 8/13

2:11 pm-3:10 pm

Nonstop0h 59m

San Diego

Mon 8/17

7:59 pm-9:14 pm

Nonstop1h 15m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sat 8/15

10:29 pm-11:27 pm

Nonstop0h 58m

San Diego

Sat 8/22

3:00 pm-4:04 pm

Nonstop1h 04m

$209

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 9/11

10:45 pm-11:42 pm

Nonstop0h 57m

San Diego

Sun 9/13

7:53 pm-9:00 pm

Nonstop1h 07m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Riverside to San Diego

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

What is the cheapest time of day to fly from R1V to SAN?

Find hourly flight availability from Riverside to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 24, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 21% on flights from Riverside to San Diego by exploring options for tickets in the morning.

Weekly flight availability from Riverside to San Diego

Explore weekly flight availability from Riverside to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 24, 2026.

The most flights from R1V to SAN are scheduled on a Wednesday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 on average).

How much does it cost to fly round-trip from Riverside to San Diego?

Airfare is below average for this route at the moment.
Riverside to San Diego flights typically cost between $226 and $339 in September.
The cheapest round-trip price found within the last 5 days was $88 on Frontier (Sep 21-Sep 28).

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 July 24, 2026.
Read through reviews of airlines operating flights from Riverside to San Diego, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,482 reviews

Overall

7.8

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jedidiah,Aug 2023

SFO - LAX

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.
Delta
7.8
Good
8,482 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jedidiah,Aug 2023

SFO - LAX

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.
United Airlines
7.4
Good
10,026 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jedidiah,Aug 2023

SFO - LAX

The flight was not listed on the screens so we had to guess which gate to go to from another similar flight and got lucky. Flight crew seemed irritated to be there.

Related info for your journey

Find useful and relevant information for your journey from Riverside 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 airport do you fly into for flights to San Diego from Riverside?

    San Diego (SAN) is the airport you will fly into if you book a flight from Riverside to San Diego. You should not have trouble finding flights to San Diego from Riverside; the airport handles an average of 40 inbound flights from Riverside per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the San Diego airport from Riverside. It is only a 2.6 mi journey from San Diego (SAN) to San Diego’s city center.

  • How popular is this Riverside to San Diego flight route?

    The Riverside to San Diego flight path was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Riverside to San Diego?

    Alaska Airlines, Delta, and United Airlines can get you from Riverside to San Diego in just under 1h. Your travel time can differ by up to 14h 48m. The distance between Riverside and San Diego is about 109 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Riverside to San Diego one-way?

    The cheapest airlines for a one-way flight from Riverside to San Diego are Alaska Airlines ($101), United Airlines ($133), and Delta ($203).

  • What are the most reliable airlines from Riverside to San Diego?

    Before booking your flight to San Diego from Riverside, check out the most reliable airlines to get you to your destination on time: Scandinavian Airlines (97%), Aeromexico (94%), Virgin Atlantic( 93%).

  • What are the cheapest flights from Riverside to San Diego?

    The cheapest flight price from Riverside to San Diego is $233. On average you can expect to pay $334. The most popular route, (Los Angeles - San Diego), can usually be booked for $199.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Riverside 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
El Cajon
National City
Chula Vista
Poway
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Riverside to San Diego

Discover the top 2 airlines that operate flights from Riverside 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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$244FlexibilityNo cancel feeOn-time69%
DeltaCheapest$179Average$267FlexibilityNo cancel feeOn-timeN/A

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