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$41+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to San Diego are usually found in January or July, booked 82 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap 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 June 12, 2025.

Round-trip from

$86
(Mytrip)

One-way from

$41
(FlightHub)

Popular in

February

Cheapest in

January

Average price

$219
From Riverside to San Diego
Search Deals
One-way flight from Riverside to San Diego
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 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 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 June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:00 amLAX - SAN
1 stop3h 55mSpirit Airlines
Wed 7/97:00 pmSAN - LAX
1 stop3h 50mSpirit Airlines
Deal found 6/12$86
This Frontier deal was found by Cheapflights users on 6/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/313:31 pmLAX - SAN
1 stop7h 32mFrontier
Thu 9/46:25 amSAN - LAX
1 stop5h 44mFrontier
Deal found 6/12$155
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:20 pmLAX - SAN
1 stop3h 46mMultiple Airlines
Sat 8/212:41 pmSAN - LAX
1 stop8h 43mMultiple Airlines
Deal found 6/10$157
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/188:20 amLAX - SAN
Nonstop0h 58mDelta
Sun 7/207:35 pmSAN - LAX
Nonstop1h 15mDelta
Deal found 6/10$179
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/110:42 pmLAX - SAN
1 stop13h 01mAlaska Airlines
Mon 8/49:32 pmSAN - LAX
1 stop14h 26mAlaska Airlines
Deal found 6/10$180
This United Airlines deal was found by Cheapflights users on 6/9. 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 6/2710:45 pmLAX - SAN
Nonstop1h 01mUnited Airlines
Sat 6/286:15 amSAN - LAX
Nonstop1h 12mUnited Airlines
Deal found 6/9$189

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

Fly from

Riverside

Fly to

San Diego

Route

Depart

Return

Price

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 7/9

6:00 am-9:55 am

1 stop3h 55m

San Diego

Wed 7/9

3:57 pm-10:50 pm

1 stop6h 53m

$86

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sun 8/31

3:31 pm-11:03 pm

1 stop7h 32m

San Diego

Thu 9/4

6:25 am-12:09 pm

1 stop5h 44m

$155

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 7/30

7:20 pm-11:06 pm

1 stop3h 46m

San Diego

Sat 8/2

12:41 pm-9:24 pm

1 stop8h 43m

$157

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 7/18

8:20 am-9:18 am

Nonstop0h 58m

San Diego

Sun 7/20

7:35 pm-8:50 pm

Nonstop1h 15m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 8/1

10:42 pm-11:43 am

1 stop13h 01m

San Diego

Mon 8/4

9:32 pm-11:58 am

1 stop14h 26m

$180

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 6/27

10:45 pm-11:46 pm

Nonstop1h 01m

San Diego

Sat 6/28

6:15 am-7:27 am

Nonstop1h 12m

$189

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 6/24

6:52 pm-11:29 pm

1 stop4h 37m

$41

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 7/31

7:45 pm-12:04 pm

1 stop16h 19m

$75

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Mon 9/1

10:42 pm-6:37 pm

1 stop19h 55m

$94

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 7/18

3:42 pm-11:06 pm

2 stops31h 24m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 13 results
1
2

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

How far ahead should I book a flight from Riverside to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to San Diego. Price data was last updated on June 9, 2025.

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Riverside to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Riverside to San Diego (average of $286). Flying from Riverside 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.

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 June 12, 2025.

When flying from Riverside to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Riverside to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Riverside to San Diego. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Riverside to San Diego flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 June 12, 2025.

The most flights from R1V to SAN are scheduled on a Thursday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

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.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Riverside to San Diego. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Spirit Airlines
6.3
Okay
8,052 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 38 inbound flights from Riverside per day. You should also have plenty of airline options to choose from since 3 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 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 Spirit Airlines ($41), Frontier ($75), and Alaska Airlines ($94).

  • 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: ITA Airways (98%), Air China (96%), Copa Airlines( 95%).

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

    The cheapest flight price from Riverside to San Diego is $179. On average you can expect to pay $297. The most popular route, (Los Angeles - San Diego), can usually be booked for $86.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Riverside to San Diego (average of $286). Flying from Riverside 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 Riverside?

Book flights to Riverside 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 3 airlines flying from Riverside to San Diego

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$64Average$100FlexibilityNo cancel feeOn-time65%
DeltaCheapest$154Average$200FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$159Average$240FlexibilityNo cancel feeOn-time69%

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