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$648+ Cheap flights from Dublin (DUB) to San Diego (SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SAN
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Find cheap flights from Dublin 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 Dublin to San Diego are usually found in January or March, booked 21 days in advance, depart on a Friday or Monday and return on a Monday

Cheap flight deals from Dublin to San Diego

Cheapest flights from Dublin to San Diego
Explore the most affordable flight options available from Dublin to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This Trip.com deal was found by Cheapflights users on 12/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:00 pmDUB - SAN
1 stop31h 53mIberia
Fri 1/26:20 amSAN - DUB
1 stop18h 20mIberia
Deal found 12/14$937
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 12/2410:40 amDUB - SAN
2 stops17h 17mUnited Airlines
Fri 1/28:00 amSAN - DUB
1 stop18h 20mUnited Airlines
Deal found 12/14$954
This Iberia deal was found by Cheapflights users on 12/13. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:55 pmDUB - SAN
1 stop15h 20mIberia
Tue 12/309:30 amSAN - DUB
1 stop15h 10mIberia
Deal found 12/13$1,020
This Finnair deal was found by Cheapflights users on 12/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:30 amDUB - SAN
2 stops18h 51mMultiple Airlines
Tue 12/309:40 amSAN - DUB
1 stop13h 35mMultiple Airlines
Deal found 12/14$1,034
This Delta deal was found by Cheapflights users on 12/13. 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.
Sun 12/148:50 amDUB - SAN
2 stops20h 15mDelta
Tue 12/306:30 amSAN - DUB
2 stops17h 15mDelta
Deal found 12/13$1,035
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Sun 12/141:35 pmDUB - SAN
2 stops28h 05mUnited Airlines
Thu 12/188:00 amSAN - DUB
1 stop18h 20mUnited Airlines
Deal found 12/14$1,051
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:55 amDUB - SAN
2 stops20h 43mDelta
Fri 1/1610:30 pmSAN - DUB
2 stops26h 15mDelta
Deal found 12/16$1,064
This Finnair deal was found by Cheapflights users on 12/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:30 amDUB - SAN
1 stop18h 18mMultiple Airlines
Fri 1/166:00 pmSAN - DUB
1 stop15h 00mMultiple Airlines
Deal found 12/16$1,081
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Mon 12/2910:40 amDUB - SAN
2 stops19h 52mUnited Airlines
Fri 1/1610:52 amSAN - DUB
1 stop13h 18mUnited Airlines
Deal found 12/15$1,087
This Delta deal was found by Cheapflights users on 12/14. 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.
Sun 12/141:25 pmDUB - SAN
2 stops36h 47mDelta
Thu 12/186:15 amSAN - DUB
2 stops17h 30mDelta
Deal found 12/14$1,136

Find flight deals from Dublin to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$648
(lastminute.com)

Popular in

August

Cheapest in

January

Average price

$882
Provider with most accurate pricing for Dublin-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-San Diego flights.
Search Deals
From Dublin to San Diego
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dublin 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 December 16, 2025.
Use the filters below to find and compare flights from Dublin to San Diego that are best for you.

Fly from

Dublin

Fly to

San Diego

Route

Depart

Return

Price

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Fri 1/16

12:30 pm-9:05 pm

2 stops40h 35m

San Diego

Thu 1/29

2:55 pm-6:20 pm

2 stops19h 25m

$651

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Wed 1/28

7:05 pm-10:47 pm

2 stops35h 42m

San Diego

Thu 2/5

2:55 pm-6:20 pm

2 stops19h 25m

$661

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Tue 1/27

7:05 pm-10:47 pm

2 stops35h 42m

San Diego

Tue 2/3

2:55 pm-6:20 pm

2 stops19h 25m

$661

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Thu 1/29

7:05 pm-10:47 pm

2 stops35h 42m

San Diego

Tue 2/3

2:55 pm-6:20 pm

2 stops19h 25m

$661

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Thu 1/29

7:05 pm-10:47 pm

2 stops35h 42m

San Diego

Wed 2/4

2:55 pm-6:20 pm

2 stops19h 25m

$661

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Thu 1/29

7:05 pm-10:47 pm

2 stops35h 42m

San Diego

Thu 2/5

2:55 pm-6:20 pm

2 stops19h 25m

$661

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Wed 2/4

12:30 pm-12:05 am

2 stops43h 35m

San Diego

Sun 2/8

2:55 pm-11:45 am

2 stops36h 50m

$662

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Fri 1/30

12:30 pm-9:05 pm

2 stops40h 35m

San Diego

Fri 2/6

2:55 pm-9:25 am

2 stops34h 30m

$800

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Fri 1/30

8:35 pm-4:10 pm

1 stop27h 35m

San Diego

Fri 2/6

1:19 pm-1:35 pm

2 stops16h 16m

$804

DublinSan Diego

DUB - SAN

DUBSAN

Dublin

Fri 1/16

7:35 pm-11:45 am

2 stops48h 10m

San Diego

Thu 1/29

9:10 am-8:20 am

1 stop15h 10m

$804

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 16 results
1
2

Compare providers for flights from Dublin to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dublin to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Dublin-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Dublin-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Dublin-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dublin-San Diego flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dublin-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dublin to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Dublin 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 Dublin to San Diego

How far ahead should I book a flight from Dublin to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Dublin to San Diego. Price data was last updated on December 12, 2025.

Booking 21 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Dublin to San Diego?

Currently, June is the cheapest month in which you can book a flight from Dublin to San Diego (average of $486). Flying from Dublin to San Diego in July is currently the most expensive (average of $807). 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.

Related info for your journey

Find useful and relevant information for your journey from Dublin to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Dublin to San Diego?

    Departing from Dublin to San Diego will take you 40h 35m. The distance from Dublin to San Diego is about 5194 mi.

  • Can I find deals for flights from Dublin to San Diego that include hotel bookings?

    Yes. In addition to deals on Dublin to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dublin to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to San Diego.

  • Can I find deals for business class flights from Dublin to San Diego?

    Yes. Cheapflights offers flight deals from Dublin 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 Dublin to San Diego?

    Currently, June is the cheapest month in which you can book a flight from Dublin to San Diego (average of $486). Flying from Dublin to San Diego in July is currently the most expensive (average of $807). 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
National City
La Mesa
Poway
Julian
Lemon Grove

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