$27+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
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 January or July, booked 77 days in advance, depart on a Thursday or Wednesday and return on a Friday
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 April 1, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $77 (Cheapflightsfares) |
One-way from | $44 (FlightHub) |
Popular in | February |
Cheapest in | January |
Average price | $206 |
Find flight deals from Irvine to San Diego
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 April 1, 2025.
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 April 1, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 3/31. 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.
This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 3/31. 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.
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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.
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 April 1, 2025.
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
Tue 4/29
7:55 pm-12:42 am
1 stop4h 47m
San Diego
Tue 5/6
6:15 am-12:09 pm
1 stop5h 54m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Fri 4/18
4:50 pm-5:51 pm
Nonstop1h 01m
San Diego
Sun 4/20
8:30 pm-9:36 pm
Nonstop1h 06m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Fri 6/13
10:18 pm-7:13 am
1 stop8h 55m
San Diego
Fri 8/1
9:32 pm-7:20 am
1 stop9h 48m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Fri 7/4
8:20 am-9:19 am
Nonstop0h 59m
San Diego
Mon 7/7
7:30 pm-8:31 pm
Nonstop1h 01m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Wed 7/2
8:32 am-4:09 pm
1 stop7h 37m
San Diego
Tue 7/8
8:10 am-11:58 am
1 stop3h 48m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Thu 4/24
8:40 am-12:01 pm
1 stop3h 21m
San Diego
Sun 4/27
4:30 pm-9:52 pm
1 stop5h 22m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Wed 4/30
9:00 am-7:54 pm
1 stop10h 54m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Wed 8/13
10:40 am-4:09 pm
1 stop5h 29m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Fri 7/25
8:35 pm-9:05 am
1 stop12h 30m
Los AngelesSan Diego
LAX - SAN
LAXSAN
Los Angeles
Sun 6/1
6:46 pm-7:13 am
3 stops36h 27m
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.
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 March 28, 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, August is the cheapest month in which you can book a flight from Irvine to San Diego (average of $286). Flying from Irvine 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 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 April 1, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Irvine to San Diego as you normally would.
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 Sunday evenings when fares are most often at their lowest. Monday mornings 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 April 1, 2025.
The most flights from IR9 to SAN are scheduled on a Monday (43 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 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 April 1, 2025.
To help decide which airline to fly from Irvine to San Diego, see what other customers have to say about Alaska Airlines, Delta and Qatar Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Crew
Boarding
Entertainment
Comfort
Food
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Boarding
Entertainment
Comfort
Food
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Boarding
Entertainment
Comfort
Food
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Boarding
Entertainment
Comfort
Food
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Boarding
Entertainment
Comfort
Food
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Boarding
Entertainment
Comfort
Food
Reviews
Seleste,Dec 2024
FAT - SAN
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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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 April 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$64 | Average$113 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$154 | Average$208 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$159 | Average$241 | FlexibilityNo cancel fee | On-time69% |