San Diego

$53+ Cheap flights from Irvine, 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
Apr 3 — Apr 101
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Cheapflights Tip: The best prices from Irvine to San Diego are usually found in July or April, booked 23 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Cheap flight deals from Irvine to San Diego

Cheapest flights from Irvine to San Diego
Explore the most affordable flight options available from Irvine to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/1. 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 4/19:05 pm
LAX
-
SAN
1 stop10h 16m
Frontier
Mon 4/611:08 am
SAN
-
LAX
1 stop10h 43m
Frontier
Deal found 3/1$99
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Tue 3/318:15 pm
LAX
-
SAN
1 stop17h 49m
Frontier
Tue 4/72:49 pm
SAN
-
LAX
1 stop5h 26m
Frontier
Deal found 3/2$101
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 4/19:05 pm
LAX
-
SAN
1 stop10h 16m
Frontier
Wed 4/82:49 pm
SAN
-
LAX
1 stop5h 26m
Frontier
Deal found 3/2$103
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 4/118:35 pm
LAX
-
SAN
1 stop10h 46m
Frontier
Tue 4/1412:29 pm
SAN
-
LAX
1 stop26h 30m
Frontier
Deal found 3/1$104
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Tue 4/143:49 pm
LAX
-
SAN
1 stop19h 45m
Frontier
Tue 4/2112:29 pm
SAN
-
LAX
1 stop26h 30m
Frontier
Deal found 3/1$106
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 4/118:35 pm
LAX
-
SAN
1 stop10h 46m
Frontier
Wed 4/1510:30 am
SAN
-
LAX
1 stop12h 44m
Frontier
Deal found 3/1$115
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/24:07 pm
LAX
-
SAN
1 stop4h 00m
Multiple Airlines
Thu 4/911:58 am
SAN
-
LAX
1 stop9h 38m
Multiple Airlines
Deal found 3/3$116
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 4/153:49 pm
LAX
-
SAN
1 stop26h 39m
Frontier
Wed 4/2210:30 am
SAN
-
LAX
1 stop12h 44m
Frontier
Deal found 3/1$117
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/94:07 pm
LAX
-
SAN
1 stop4h 00m
Multiple Airlines
Sun 4/1212:33 pm
SAN
-
LAX
1 stop25h 27m
Multiple Airlines
Deal found 3/3$118
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:19 pm
LAX
-
SAN
1 stop16h 54m
Frontier
Wed 4/82:49 pm
SAN
-
LAX
1 stop5h 26m
Frontier
Deal found 2/27$119
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/66:15 am
LAX
-
SAN
1 stop17h 47m
Frontier
Thu 4/911:58 am
SAN
-
LAX
1 stop9h 38m
Frontier
Deal found 3/3$122
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Fri 5/87:44 pm
LAX
-
SAN
1 stop18h 41m
Frontier
Mon 5/119:19 am
SAN
-
LAX
1 stop10h 05m
Frontier
Deal found 3/1$123

Find flight deals from Irvine to San Diego

Keep the following information in mind while searching for Irvine to San Diego flight deals. Data was last updated March 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$99
(Kiwi.com)

One-way from

$53
(Kiwi.com)

Popular in

January

Cheapest in

July

Average price

$196
Provider with most accurate pricing for Los Angeles-San Diego flight deals.
Provider most trusted by Cheapflights users for Los Angeles-San Diego flights.
From Irvine to San Diego
One-way flight from Irvine to San Diego
Highest demand for flights based on searches. 21% potential increase in price ($63 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in March 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Irvine 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 March 4, 2026.
Use the filters below to find and compare flights from Irvine to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sat 3/28

8:10 am-9:07 am

Nonstop0h 57m

San Diego

Sat 4/4

10:40 am-11:53 am

Nonstop1h 13m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 5/15

7:00 pm-8:02 pm

Nonstop1h 02m

San Diego

Sun 5/17

8:45 pm-9:53 pm

Nonstop1h 08m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 4/10

8:55 am-9:55 am

Nonstop1h 00m

San Diego

Sun 4/12

7:35 pm-8:47 pm

Nonstop1h 12m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sat 5/23

10:56 pm-11:54 pm

Nonstop0h 58m

San Diego

Mon 5/25

6:20 am-7:21 am

Nonstop1h 01m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 3/20

8:10 am-9:07 am

Nonstop0h 57m

San Diego

Sun 3/22

7:35 pm-8:47 pm

Nonstop1h 12m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sun 3/22

8:10 am-9:07 am

Nonstop0h 57m

San Diego

Mon 3/30

7:35 pm-8:47 pm

Nonstop1h 12m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 3/31

5:30 pm-6:22 pm

Nonstop0h 52m

San Diego

Tue 4/7

7:35 pm-8:47 pm

Nonstop1h 12m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 3/19

8:10 am-9:07 am

Nonstop0h 57m

San Diego

Mon 3/23

7:35 pm-8:47 pm

Nonstop1h 12m

$194

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sat 4/18

9:35 pm-10:36 pm

Nonstop1h 01m

San Diego

Sat 4/25

6:20 am-7:35 am

Nonstop1h 15m

$199

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 4/15

8:28 am-9:24 am

Nonstop0h 56m

San Diego

Wed 4/22

6:20 am-7:35 am

Nonstop1h 15m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

Showing 1-10 of 22 resultsSorted by cheapest first
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3

Best time to book a flight from Irvine to San Diego

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

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

Use this chart to determine the optimal time to book a round-trip flight from Irvine to San Diego. Price data was last updated on February 27, 2026.

To ensure you get the cheapest price possible for a flight from Irvine to San Diego, you should look to book at least 23 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Irvine to San Diego (average of $79). Flying from Irvine to San Diego in January is currently the most expensive (average of $179). 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 IR9 to SAN?

Find hourly flight availability from Irvine 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 March 4, 2026.

It’s typically best to fly out from Irvine to San Diego in the morning. Doing so could potentially save you 26% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 March 4, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and Spirit Airlines from Irvine 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.

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Irvine 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 Irvine?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Irvine. On average, San Diego has 24 inbound flights from Irvine per day from 3 airlines. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

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

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

    Departing from Irvine to San Diego will take you 57m. Airlines will cover a distance of 109 mi. Generally, flights for this route are nonstop.

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

    One-way options have recently been found by users for as low as $35 on Spirit Airlines. Other airlines that offer cheap prices include Alaska Airlines from $101 and United Airlines from $133 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Irvine to San Diego on time: Lufthansa (89%), Copa Airlines (88%), Scandinavian Airlines (88%).

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

    Looking at all options, your cheapest flight can be booked for $133. While the most popular route (Los Angeles - San Diego) can be booked for $118 on average, our data indicates $291 when flying from Irvine to San Diego.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Irvine 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 Irvine to San Diego?

    Currently, April is the cheapest month in which you can book a flight from Irvine to San Diego (average of $79). Flying from Irvine to San Diego in January is currently the most expensive (average of $179). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Irvine to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Irvine to San Diego

Discover the top 3 airlines that operate flights from Irvine 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 March 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$78Average$110FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$179Average$240FlexibilityNo cancel feeOn-time69%
DeltaCheapest$179Average$231FlexibilityNo cancel feeOn-timeN/A

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