HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$41+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SAN
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 82 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

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 June 30, 2025.

Round-trip from

$84
(FlightHub)

One-way from

$41
(FlightHub)

Popular in

February

Cheapest in

January

Average price

$219
From Irvine to San Diego
Search Deals
One-way flight from Irvine to San Diego
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 30, 2025.

This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/227:20 pmLAX - SAN
1 stop3h 46mSpirit Airlines
Tue 7/293:57 pmSAN - LAX
1 stop4h 19mSpirit Airlines
Deal found 6/30$84
This Justfly.com deal was found by Cheapflights users on 6/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:20 pmLAX - SAN
1 stop3h 46mMultiple Airlines
Mon 8/412:59 pmSAN - LAX
1 stop6h 53mMultiple Airlines
Deal found 6/29$121
This Flightnetwork deal was found by Cheapflights users on 6/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/277:45 pmLAX - SAN
1 stop22h 25mFrontier
Sun 8/37:04 pmSAN - LAX
1 stop17h 04mFrontier
Deal found 6/29$129

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 June 30, 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 7/22

7:20 pm-11:06 pm

1 stop3h 46m

San Diego

Tue 7/29

3:57 pm-8:16 pm

1 stop4h 19m

$84

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Wed 7/30

7:20 pm-11:06 pm

1 stop3h 46m

San Diego

Mon 8/4

12:59 pm-7:52 pm

1 stop6h 53m

$121

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Sun 7/27

7:45 pm-6:10 pm

1 stop22h 25m

San Diego

Sun 8/3

7:04 pm-12:08 pm

1 stop17h 04m

$129

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 7/11

6:00 am-9:55 am

1 stop3h 55m

$41

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Tue 9/9

3:38 pm-9:24 pm

1 stop5h 46m

$58

Los AngelesSan Diego

LAX - SAN

LAXSAN

Los Angeles

Fri 8/1

10:42 pm-8:21 am

1 stop9h 39m

$97

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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 June 27, 2025.

To ensure you get the cheapest price possible for a flight from Irvine to San Diego, you should look to book at least 82 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 June 30, 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 Thursday at noon when fares are most often at their lowest. Monday evenings 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 June 30, 2025.

The most flights from IR9 to SAN are scheduled on a Sunday (44 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (23 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 June 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Spirit Airlines, and Frontier 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Spirit Airlines
6.3
Okay
8,094 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.9
Fair
3,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 30 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?

    Within the past month, 3 users have taken a look at flights from Irvine to San Diego.

  • 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 $41 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $58 and Alaska Airlines from $97 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 (97%), LATAM Airlines (96%), Austrian Airlines (96%).

  • 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 $84 on average our data indicates $366 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, 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.

See more FAQs

Traveling to a place near Irvine?

Book flights to Irvine if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
National City
Lemon Grove
Imperial Beach
La Mesa
Poway
Alpine
Santee

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Irvine to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Las Vegas flights
Los Angeles to San Francisco flights
San Francisco to Los Angeles flights
Los Angeles to Las Vegas flights
Santa Ana to San Francisco flights
Oakland to Las Vegas flights
San Jose to Las Vegas flights
San Francisco to Santa Ana flights
Los Angeles to San Jose flights
Santa Ana to Las Vegas flights
Burbank to Las Vegas flights
Ontario to San Francisco flights
San Jose to Los Angeles flights
San Francisco to San Diego flights
Los Angeles to Oakland flights
Oakland to Los Angeles flights
San Francisco to Ontario flights
San Diego to Las Vegas flights
Sacramento to Los Angeles flights
San Jose to San Diego flights
Oakland to Santa Ana flights
Oakland to Burbank flights
Las Vegas to Los Angeles flights
Santa Ana to Oakland flights
Oakland to San Diego flights
San Diego to San Francisco flights
Ontario to Las Vegas flights
Los Angeles to Sacramento flights
Sacramento to Las Vegas flights
Burbank to San Francisco flights
San Jose to Santa Ana flights
Burbank to Oakland flights
Sacramento to San Diego flights
Los Angeles to Reno flights
San Francisco to Burbank flights
Santa Ana to San Jose flights
San Diego to San Jose flights
Sacramento to Santa Ana flights
Santa Rosa to San Diego flights
San Jose to Ontario flights
Las Vegas to Santa Ana flights
Ontario to Sacramento flights
Las Vegas to San Francisco flights
Fresno to Las Vegas flights
San Diego to Sacramento flights
Sacramento to Ontario flights
Sacramento to Burbank flights
Burbank to Sacramento flights
San Francisco to Palm Springs flights
Burbank to San Jose flights

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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$64Average$113FlexibilityNo cancel feeOn-time65%
DeltaCheapest$153Average$206FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$159Average$239FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.