$70+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
juin 28 — juil. 51
Round-trip
1 adult, Economy
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Find cheap flights from Irvine to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Irvine to San Diego are usually found in February or August, booked 40 days in advance, depart on a Wednesday or Thursday and return on a Thursday
Cheap flight deals from Irvine to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Irvine to San DiegoExplore 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 mai 29, 2026.
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 mai 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mar. 7/76:30 am
LAX
- SAN
1 stop7h 38m
Frontier
mar. 7/144:12 pm
SAN
- LAX
1 stop20h 49m
Frontier
Deal found 5/25![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
mar. 7/216:30 am
LAX
- SAN
1 stop7h 38m
Frontier
mar. 7/283:03 pm
SAN
- LAX
1 stop5h 00m
Frontier
Deal found 5/26![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mer. 6/176:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
mer. 6/249:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/25![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
mar. 6/232:00 pm
LAX
- SAN
1 stop25h 52m
Frontier
mar. 6/309:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/26![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/28. 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.
mar. 6/236:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
mer. 6/249:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/28![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mer. 7/16:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
mer. 7/153:03 pm
SAN
- LAX
1 stop5h 00m
Frontier
Deal found 5/25![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
mar. 8/188:15 pm
LAX
- SAN
1 stop24h 43m
Frontier
sam. 8/224:17 pm
SAN
- LAX
1 stop5h 07m
Frontier
Deal found 5/26![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mar. 6/162:00 pm
LAX
- SAN
1 stop25h 52m
Frontier
mar. 6/239:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/25![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mar. 9/226:15 am
LAX
- SAN
1 stop9h 26m
Frontier
mer. 9/309:57 am
SAN
- LAX
1 stop5h 18m
Frontier
Deal found 5/25![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
ven. 7/310:12 pm
LAX
- SAN
1 stop21h 22m
Frontier
mar. 7/73:03 pm
SAN
- LAX
1 stop18h 22m
Frontier
Deal found 5/29![Frontier logo]()
$167
Best flights from Irvine to San DiegoDiscover carefully curated flight deals from Irvine to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mai 29, 2026.
Discover carefully curated flight deals from Irvine to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mai 29, 2026.
This United Airlines deal was found by Cheapflights users on 5/28. 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.
ven. 6/199:00 am
LAX
- SAN
Nonstop1h 08m
United Airlines
lun. 6/2210:49 am
SAN
- LAX
Nonstop1h 09m
United Airlines
Deal found 5/28![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/26. 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.
jeu. 6/188:50 am
LAX
- SAN
Nonstop1h 01m
Delta
dim. 6/2110:50 am
SAN
- LAX
Nonstop1h 22m
Delta
Deal found 5/26![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 5/26. 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.
ven. 6/1910:40 pm
LAX
- SAN
Nonstop1h 00m
Delta
jeu. 6/2510:50 am
SAN
- LAX
Nonstop1h 22m
Delta
Deal found 5/26![Delta logo]()
$239
This United Airlines deal was found by Cheapflights users on 5/24. 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.
mar. 7/76:50 pm
LAX
- SAN
Nonstop1h 01m
United Airlines
mar. 7/1410:49 am
SAN
- LAX
Nonstop1h 09m
United Airlines
Deal found 5/24![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/25. 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.
mer. 8/196:20 pm
LAX
- SAN
Nonstop0h 59m
Delta
sam. 8/223:00 pm
SAN
- LAX
Nonstop1h 05m
Delta
Deal found 5/25![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 5/24. 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.
ven. 8/76:20 pm
LAX
- SAN
Nonstop0h 59m
Delta
jeu. 8/133:00 pm
SAN
- LAX
Nonstop1h 05m
Delta
Deal found 5/24![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 5/24. 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.
sam. 7/182:11 pm
LAX
- SAN
Nonstop0h 57m
Delta
mer. 7/226:15 am
SAN
- LAX
Nonstop1h 20m
Delta
Deal found 5/24![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 5/28. 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.
mar. 7/2110:45 pm
LAX
- SAN
Nonstop0h 57m
Delta
lun. 7/2710:54 am
SAN
- LAX
Nonstop1h 17m
Delta
Deal found 5/28![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 5/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 7/27:30 am
LAX
- SAN
Nonstop1h 00m
Delta
jeu. 7/910:54 am
SAN
- LAX
Nonstop1h 17m
Delta
Deal found 5/27![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 5/26. 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.
sam. 7/118:20 am
LAX
- SAN
Nonstop1h 02m
Delta
jeu. 7/166:15 am
SAN
- LAX
Nonstop1h 20m
Delta
Deal found 5/26![Delta logo]()
$239
Last-minute flights from Irvine to San DiegoDiscover last-minute flight deals from Irvine to San Diego. Data last updated mai 29, 2026 and is based on user searches.
Discover last-minute flight deals from Irvine to San Diego. Data last updated mai 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mar. 6/162:00 pm
LAX
- SAN
1 stop25h 52m
Frontier
mar. 6/239:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/25![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mer. 6/176:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
mer. 6/249:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/25![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
mer. 6/176:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
sam. 6/209:43 am
SAN
- LAX
1 stop5h 24m
Frontier
Deal found 5/26![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
mer. 6/176:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
lun. 6/224:17 pm
SAN
- LAX
1 stop20h 48m
Frontier
Deal found 5/25![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
ven. 6/196:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
mer. 6/249:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/25![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
sam. 6/206:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
sam. 6/277:35 pm
SAN
- LAX
1 stop26h 11m
Frontier
Deal found 5/24![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
mar. 6/232:00 pm
LAX
- SAN
1 stop25h 52m
Frontier
mar. 6/309:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/26![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/28. 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.
mar. 6/236:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
mer. 6/249:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/28![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 5/28. 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.
ven. 6/2610:12 pm
LAX
- SAN
1 stop10h 36m
Frontier
mar. 6/309:43 am
SAN
- LAX
1 stop9h 17m
Frontier
Deal found 5/28![Frontier logo]()
$208
One-way flights from Irvine to San DiegoSearch for one-way flight options from Irvine to San Diego. Find affordable one-way fares based on user searches. Data last updated mai 29, 2026.
Search for one-way flight options from Irvine to San Diego. Find affordable one-way fares based on user searches. Data last updated mai 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
lun. 11/27:47 pm
LAX
- SAN
1 stop13h 15m
Frontier
Deal found 5/26![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
mar. 10/61:17 pm
LAX
- SAN
1 stop19h 45m
Frontier
Deal found 5/27![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
mar. 6/306:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
Deal found 5/29![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
mar. 6/232:00 pm
LAX
- SAN
1 stop25h 52m
Frontier
Deal found 5/26![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 5/28. 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.
mer. 9/212:14 pm
LAX
- SAN
1 stop8h 44m
Frontier
Deal found 5/28![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 5/28. 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.
mar. 7/216:30 am
LAX
- SAN
1 stop7h 38m
Frontier
Deal found 5/28![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
sam. 7/46:57 pm
LAX
- SAN
1 stop5h 18m
Frontier
Deal found 5/27![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
jeu. 8/2710:44 am
LAX
- SAN
1 stop13h 05m
Frontier
Deal found 5/26![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
mer. 7/16:02 pm
LAX
- SAN
1 stop6h 13m
Frontier
Deal found 5/29![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 5/29. 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.
mar. 9/227:43 pm
LAX
- SAN
1 stop23h 54m
Frontier
Deal found 5/29![Frontier logo]()
$93
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 mai 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $140 (Kiwi.com) |
One-way from | $70 (Kiwi.com) |
Popular in | January |
Cheapest in | February |
Average price | $239 |
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 mai 29, 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
Cheapest round-trip
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
ven. 6/19
9:00 am-10:08 am
Nonstop1h 08m
San Diego
lun. 6/22
10:49 am-11:58 am
Nonstop1h 09m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
jeu. 6/18
8:50 am-9:51 am
Nonstop1h 01m
San Diego
dim. 6/21
10:50 am-12:12 pm
Nonstop1h 22m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
ven. 6/19
10:40 pm-11:40 pm
Nonstop1h 00m
San Diego
jeu. 6/25
10:50 am-12:12 pm
Nonstop1h 22m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
mar. 7/7
6:50 pm-7:51 pm
Nonstop1h 01m
San Diego
mar. 7/14
10:49 am-11:58 am
Nonstop1h 09m
$239
Quickest round-trip
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
mer. 8/19
6:20 pm-7:19 pm
Nonstop0h 59m
San Diego
sam. 8/22
3:00 pm-4:05 pm
Nonstop1h 05m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
ven. 8/7
6:20 pm-7:19 pm
Nonstop0h 59m
San Diego
jeu. 8/13
3:00 pm-4:05 pm
Nonstop1h 05m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
sam. 7/18
2:11 pm-3:08 pm
Nonstop0h 57m
San Diego
mer. 7/22
6:15 am-7:35 am
Nonstop1h 20m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
mar. 7/21
10:45 pm-11:42 pm
Nonstop0h 57m
San Diego
lun. 7/27
10:54 am-12:11 pm
Nonstop1h 17m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
jeu. 7/2
7:30 am-8:30 am
Nonstop1h 00m
San Diego
jeu. 7/9
10:54 am-12:11 pm
Nonstop1h 17m
$239
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles Los Angeles
sam. 7/11
8:20 am-9:22 am
Nonstop1h 02m
San Diego
jeu. 7/16
6:15 am-7:35 am
Nonstop1h 20m
$239
Showing 1-10 of 20 resultsSorted by cheapest first
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.
LAX-SAN
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
IR9-SAN
LAX-SAN
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 mai 29, 2026.
It’s typically best to fly out from Irvine to San Diego in the morning. Doing so could potentially save you 22% on the flight price compared to flying at noon, which is usually more expensive.
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 mai 29, 2026.
The most flights from IR9 to SAN are scheduled on a Friday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 on average).
How much does it cost to fly round-trip from Irvine to San Diego?
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 mai 29, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andSpirit 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
Entertainment
7.8
Comfort
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Spirit Airlines
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
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.
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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 mai 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$142 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$179 | Average$244 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$179 | Average$259 | FlexibilityNo cancel fee | On-timeN/A |