San Diego

$50+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
Feb 4 — Feb 111
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Irvine to San Diego are usually found in July or March, booked 66 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

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 January 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/4. 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 2/412:24 pmLAX - SAN
1 stop22h 01mFrontier
Thu 2/196:25 amSAN - LAX
1 stop10h 29mFrontier
Deal found 1/4$96
This Kiwi.com deal was found by Cheapflights users on 1/3. 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.
Sat 1/314:45 pmLAX - SAN
1 stop17h 40mFrontier
Sun 3/18:20 pmSAN - LAX
1 stop10h 46mFrontier
Deal found 1/3$99
This Kiwi.com deal was found by Cheapflights users on 1/3. 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.
Sat 2/74:45 pmLAX - SAN
1 stop17h 40mFrontier
Wed 2/117:11 amSAN - LAX
1 stop16h 07mFrontier
Deal found 1/3$101
This Kiwi.com deal was found by Cheapflights users on 1/4. 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 2/912:26 pmLAX - SAN
1 stop4h 37mFrontier
Wed 2/117:11 amSAN - LAX
1 stop14h 04mFrontier
Deal found 1/4$103
This Kiwi.com deal was found by Cheapflights users on 1/4. 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 2/31:56 pmLAX - SAN
1 stop9h 35mFrontier
Tue 2/108:00 amSAN - LAX
1 stop7h 45mFrontier
Deal found 1/4$105
This Kiwi.com deal was found by Cheapflights users on 1/4. 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 1/244:45 pmLAX - SAN
1 stop17h 40mFrontier
Sat 1/3110:34 amSAN - LAX
1 stop12h 57mFrontier
Deal found 1/4$106
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 1/2612:26 pmLAX - SAN
1 stop4h 37mFrontier
Thu 1/299:45 pmSAN - LAX
1 stop10h 51mFrontier
Deal found 1/3$107
This Kiwi.com deal was found by Cheapflights users on 1/4. 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 1/2912:48 pmLAX - SAN
1 stop4h 15mFrontier
Sun 2/19:45 pmSAN - LAX
1 stop10h 51mFrontier
Deal found 1/4$108
This Kiwi.com deal was found by Cheapflights users on 1/3. 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.
Wed 1/281:56 pmLAX - SAN
1 stop9h 35mFrontier
Fri 1/309:45 pmSAN - LAX
1 stop16h 17mFrontier
Deal found 1/3$109
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 2/512:48 pmLAX - SAN
1 stop4h 15mFrontier
Sun 2/158:10 pmSAN - LAX
1 stop10h 56mFrontier
Deal found 1/3$110
This Kiwi.com deal was found by Cheapflights users on 1/4. 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 2/512:48 pmLAX - SAN
1 stop4h 15mMultiple Airlines
Mon 2/92:52 pmSAN - LAX
1 stop17h 30mMultiple Airlines
Deal found 1/4$111
This Kiwi.com deal was found by Cheapflights users on 1/3. 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.
Sat 1/242:39 pmLAX - SAN
1 stop8h 52mFrontier
Sun 1/259:45 pmSAN - LAX
1 stop10h 51mFrontier
Deal found 1/3$112

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 January 5, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$96
(Kiwi.com)

One-way from

$50
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$273
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. 17% potential increase in price ($48 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 January 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 January 5, 2026.
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

Sat 1/31

4:45 pm-10:25 am

1 stop17h 40m

San Diego

Sun 3/1

8:20 pm-7:06 am

1 stop10h 46m

$99

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Mon 2/9

12:26 pm-5:03 pm

1 stop4h 37m

San Diego

Wed 2/11

7:11 am-9:15 pm

1 stop14h 04m

$103

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 2/3

7:00 am-11:31 pm

1 stop16h 31m

San Diego

Tue 2/10

8:00 am-3:45 pm

1 stop7h 45m

$105

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 1/29

12:48 pm-5:03 pm

1 stop4h 15m

San Diego

Sun 2/1

9:45 pm-8:36 am

1 stop10h 51m

$109

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 2/5

12:48 pm-5:03 pm

1 stop4h 15m

San Diego

Sun 2/15

8:10 pm-7:06 am

1 stop10h 56m

$110

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sat 2/7

7:00 am-11:31 pm

1 stop16h 31m

San Diego

Mon 2/9

2:52 pm-8:22 am

1 stop17h 30m

$122

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 2/3

4:07 pm-7:34 pm

2 stops27h 27m

San Diego

Tue 2/10

8:00 am-3:45 pm

1 stop7h 45m

$134

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Mon 2/2

12:26 pm-12:08 am

2 stops11h 42m

San Diego

Mon 2/9

2:52 pm-8:22 am

1 stop17h 30m

$140

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 2/6

2:48 pm-12:08 am

2 stops9h 20m

San Diego

Mon 2/9

5:58 pm-2:54 pm

1 stop20h 56m

$145

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Thu 2/5

12:48 pm-5:03 pm

1 stop4h 15m

San Diego

Mon 2/9

5:58 pm-1:16 pm

2 stops19h 18m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

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 January 2, 2026.

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 $66). 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 January 5, 2026.

It’s typically best to fly out from Irvine to San Diego in the morning. Doing so could potentially save you 17% 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 January 5, 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.

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

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

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

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

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

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

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Crew

8.5

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 14 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 17h 40m. Airlines will cover a distance of 109 mi.

  • 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 $31 on Spirit Airlines. Other airlines that offer cheap prices include Alaska Airlines from $101 and United Airlines from $153 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: United Airlines (89%), Air China (86%), Avianca (85%).

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

    Looking at all options, your cheapest flight can be booked for $179. While the most popular route (Los Angeles - San Diego) can be booked for $115 on average, our data indicates $278 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 $66). 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
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 January 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$78Average$108FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$179Average$239FlexibilityNo cancel feeOn-time69%
DeltaCheapest$179Average$207FlexibilityNo cancel feeOn-timeN/A

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