San Diego

$57+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
Dec 19 — Dec 261
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Cheapflights Tip: The best prices from Irvine to San Diego are usually found in January or July, booked 66 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Find 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 November 19, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/189:58 pmLAX - SAN
1 stop14h 40mFrontier
Thu 12/251:06 pmSAN - LAX
1 stop7h 25mFrontier
Deal found 11/18$115
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/173:30 pmLAX - SAN
1 stop20h 41mFrontier
Wed 12/241:06 pmSAN - LAX
1 stop7h 25mFrontier
Deal found 11/19$119
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/31:57 pmLAX - SAN
1 stop3h 56mFrontier
Tue 12/96:25 amSAN - LAX
1 stop4h 14mFrontier
Deal found 11/19$122
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/229:15 amLAX - SAN
1 stop4h 00mFrontier
Tue 12/239:14 pmSAN - LAX
1 stop11h 01mFrontier
Deal found 11/18$123
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/167:00 amLAX - SAN
1 stop15h 46mFrontier
Tue 12/239:14 pmSAN - LAX
1 stop11h 01mFrontier
Deal found 11/18$124
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 12/209:20 pmLAX - SAN
1 stop14h 51mMultiple Airlines
Sun 12/281:06 pmSAN - LAX
1 stop7h 25mMultiple Airlines
Deal found 11/16$126
This Kiwi.com deal was found by Cheapflights users on 11/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:12 pmLAX - SAN
1 stop3h 55mFrontier
Thu 12/113:47 pmSAN - LAX
1 stop4h 18mFrontier
Deal found 11/17$128
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/113:30 pmLAX - SAN
1 stop21h 08mFrontier
Mon 12/151:33 pmSAN - LAX
1 stop6h 32mFrontier
Deal found 11/18$129
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/158:56 pmLAX - SAN
1 stop20h 57mFrontier
Mon 1/124:47 pmSAN - LAX
1 stop20h 40mFrontier
Deal found 11/19$131
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/113:30 pmLAX - SAN
1 stop21h 08mFrontier
Sun 12/142:30 pmSAN - LAX
1 stop21h 16mFrontier
Deal found 11/18$132
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/242:22 pmLAX - SAN
1 stop19h 35mFrontier
Thu 12/254:47 pmSAN - LAX
1 stop7h 43mFrontier
Deal found 11/18$133
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/88:56 pmLAX - SAN
1 stop20h 57mFrontier
Thu 12/113:47 pmSAN - LAX
1 stop4h 18mFrontier
Deal found 11/18$134

Cheap 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 November 19, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$115
(Kiwi.com)

One-way from

$57
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$277
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. 10% potential increase in price ($26 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in November 2025

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 November 19, 2025.
Use the filters below to find and compare flights from Irvine to San Diego that are best for you.

Fly from

Irvine

Fly to

San Diego

Route

Depart

Return

Price

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 12/16

7:00 am-10:46 pm

1 stop15h 46m

San Diego

Tue 12/23

9:14 pm-8:15 am

1 stop11h 01m

$124

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sat 1/3

8:33 am-10:13 am

1 stop25h 40m

San Diego

Sat 1/10

7:00 am-2:39 pm

1 stop7h 39m

$136

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 11/25

10:39 am-7:44 am

1 stop21h 05m

San Diego

Wed 12/3

6:25 am-10:39 am

1 stop4h 14m

$156

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 12/2

9:05 am-8:07 pm

2 stops11h 02m

San Diego

Wed 12/3

6:25 am-10:39 am

1 stop4h 14m

$169

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 12/18

8:15 am-9:16 am

Nonstop1h 01m

San Diego

Thu 12/25

4:15 pm-5:19 pm

Nonstop1h 04m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 12/17

6:50 pm-7:52 pm

Nonstop1h 02m

San Diego

Wed 12/24

11:12 am-12:23 pm

Nonstop1h 11m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 12/16

2:30 pm-3:23 pm

Nonstop0h 53m

San Diego

Tue 12/23

6:20 am-7:30 am

Nonstop1h 10m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 1/9

6:00 pm-6:53 pm

Nonstop0h 53m

San Diego

Sun 1/11

7:35 pm-8:50 pm

Nonstop1h 15m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 12/26

8:45 pm-9:38 pm

Nonstop0h 53m

San Diego

Wed 12/31

6:20 am-7:30 am

Nonstop1h 10m

$179

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 12/17

6:24 pm-7:17 pm

Nonstop0h 53m

San Diego

Wed 12/24

6:20 am-7:30 am

Nonstop1h 10m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 21 results
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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 November 14, 2025.

To ensure you get the cheapest price possible for a flight from Irvine to San Diego, you should look to book at least 63 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, January is the cheapest month in which you can book a flight from Irvine to San Diego (average of $63). Flying from Irvine to San Diego in October 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 November 19, 2025.

It’s typically best to fly out from Irvine to San Diego in the evening. Doing so could potentially save you 15% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Irvine to San Diego. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Irvine to San Diego

Explore weekly flight availability from Irvine 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 November 19, 2025.

The most flights from IR9 to SAN are scheduled on a Wednesday (41 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

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 November 19, 2025.
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

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

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

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

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

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

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

Entertainment

7.9

Food

7.3

Boarding

8.1

Overall

7.9

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 34 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 1h 01m. Airlines will cover a distance of 109 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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: Avianca (87%), Copa Airlines (87%), United Airlines (85%).

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

    Looking at all options, your cheapest flight can be booked for $153. While the most popular route (Los Angeles - San Diego) can be booked for $130 on average, our data indicates $321 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, January is the cheapest month in which you can book a flight from Irvine to San Diego (average of $63). Flying from Irvine to San Diego in October 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
Coronado
La Mesa
Poway
Lemon Grove
National City

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 November 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$64Average$111FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$179Average$239FlexibilityNo cancel feeOn-time69%
DeltaCheapest$179Average$205FlexibilityNo cancel feeOn-timeN/A

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