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$380+ Cheap flights from Ireland to San Francisco (SFO)

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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SFO
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Ireland to San Francisco

Cheapest flights from Ireland to San Francisco
Explore the most affordable flight options available from Ireland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This Finnair deal was found by Cheapflights users on 12/19. 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.
Sun 12/2812:55 pmDUB - SFO
1 stop17h 56mMultiple Airlines
Sun 1/1111:13 pmSFO - DUB
1 stop25h 27mMultiple Airlines
Deal found 12/19$662
This KLM deal was found by Cheapflights users on 12/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:25 pmDUB - SFO
1 stop30h 25mMultiple Airlines
Wed 12/313:40 pmSFO - DUB
1 stop23h 15mMultiple Airlines
Deal found 12/21$816
This Delta deal was found by Cheapflights users on 12/21. 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.
Wed 12/245:55 amDUB - SFO
2 stops23h 25mDelta
Wed 12/313:40 pmSFO - DUB
1 stop16h 05mDelta
Deal found 12/21$822
This SWISS deal was found by Cheapflights users on 12/20. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:35 pmDUB - SFO
2 stops30h 25mSWISS
Tue 1/65:25 pmSFO - DUB
2 stops40h 20mSWISS
Deal found 12/20$883
This Gotogate deal was found by Cheapflights users on 12/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:40 amDUB - SFO
1 stop16h 20mAer Lingus
Tue 1/65:20 pmSFO - DUB
Nonstop10h 05mAer Lingus
Deal found 12/20$884
This Expedia deal was found by Cheapflights users on 12/19. 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.
Sun 12/215:15 pmDUB - SFO
1 stop26h 35mKLM
Sun 12/281:55 pmSFO - DUB
1 stop14h 45mKLM
Deal found 12/19$891
This KLM deal was found by Cheapflights users on 12/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/221:25 pmDUB - SFO
1 stop30h 25mMultiple Airlines
Thu 1/83:40 pmSFO - DUB
1 stop23h 15mMultiple Airlines
Deal found 12/21$900
This Delta deal was found by Cheapflights users on 12/20. 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 12/215:55 amDUB - SFO
1 stop13h 55mDelta
Sun 1/43:40 pmSFO - DUB
1 stop16h 05mDelta
Deal found 12/20$901
This KLM deal was found by Cheapflights users on 12/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/221:25 pmDUB - SFO
1 stop30h 25mMultiple Airlines
Mon 12/293:40 pmSFO - DUB
1 stop16h 05mMultiple Airlines
Deal found 12/21$903

Find flight deals from Ireland to San Francisco

Keep the following information in mind while searching for Ireland to San Francisco flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$502
(oojo)

One-way from

$387
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$765

Good round-trip deal

$647 or less

Good one-way deal

$583 or less
Provider with most accurate pricing for Dublin-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-San Francisco flights.
Search Deals
From Ireland to San Francisco
Search Deals
One-way flight from Ireland to San Francisco
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($158 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Ireland to San Francisco.
Search Deals
Price to beat on a one-way flight from Ireland to San Francisco.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to San Francisco 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 21, 2025.
Use the filters below to find and compare flights from Ireland to San Francisco that are best for you.

Fly from

Ireland

Fly to

San Francisco

Route

Depart

Return

Price

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 1/23

12:30 pm-2:35 pm

1 stop34h 05m

San Francisco

Mon 1/26

4:40 pm-6:20 pm

1 stop17h 40m

$514

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Thu 1/15

12:30 pm-2:35 pm

1 stop34h 05m

San Francisco

Sun 3/22

5:40 pm-7:35 pm

2 stops18h 55m

$538

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sun 1/18

10:55 am-2:35 pm

2 stops35h 40m

San Francisco

Mon 3/23

5:40 pm-6:20 pm

1 stop17h 40m

$538

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 1/14

12:30 pm-2:35 pm

1 stop34h 05m

San Francisco

Sun 3/22

5:40 pm-7:35 pm

2 stops18h 55m

$538

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 1/16

12:30 pm-2:35 pm

1 stop34h 05m

San Francisco

Mon 1/19

4:40 pm-11:45 am

1 stop35h 05m

$548

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 1/17

10:10 am-2:35 pm

1 stop36h 25m

San Francisco

Mon 3/23

5:40 pm-10:45 am

2 stops34h 05m

$556

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 1/21

8:40 pm-3:00 pm

1 stop26h 20m

San Francisco

Wed 2/4

5:30 pm-7:45 pm

1 stop18h 15m

$557

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 1/17

8:55 am-3:00 pm

1 stop14h 05m

San Francisco

Wed 3/25

6:30 pm-5:00 pm

1 stop15h 30m

$559

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Mon 1/19

8:40 pm-3:00 pm

1 stop26h 20m

San Francisco

Sun 3/22

5:00 pm-7:40 pm

2 stops19h 40m

$559

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 3/18

10:20 am-7:45 pm

1 stop16h 25m

San Francisco

Thu 3/26

6:30 pm-5:25 pm

1 stop15h 55m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 50 results
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Best time to book a flight from Ireland to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Ireland 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 Ireland to San Francisco

What is the cheapest month to book a flight from Ireland to San Francisco?

Currently, October is the cheapest month in which you can book a flight from Ireland to San Francisco (average of $435). Flying from Ireland to San Francisco in July is currently the most expensive (average of $695). 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 IE to SFO?

Find hourly flight availability from Ireland to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2025.

It’s typically best to fly out from Ireland to San Francisco in the evening. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, which is usually more expensive.

How often are flights from Ireland to San Francisco delayed?

About 12% of weekly flights between Ireland and San Francisco have experienced delays in the past year, with the average delay time being 129 minutes.

What is the most punctual flight time for Ireland to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to San Francisco flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 12% of flights being delayed.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 Francisco. Reviews last updated December 21, 2025.
Read through reviews of airlines operating flights from Ireland to San Francisco, such as United Airlines, American Airlines, and Aer Lingus. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,100 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,100 reviews
United Airlines
7.4
Good
9,100 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
11,051 reviews
United Airlines
7.4
Good
9,100 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Aer Lingus
7.2
Good
1,406 reviews
United Airlines
7.4
Good
9,100 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Ireland to San Francisco. 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 Francisco from Ireland?

    San Francisco (SFO) is the airport you will fly into if you book a flight from Ireland to San Francisco. It is only a 11.8 mi journey from San Francisco (SFO) to San Francisco’s city center.

  • How popular is this Ireland to San Francisco flight route?

    The Ireland to San Francisco flight path was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ireland to San Francisco?

    Airlines like Scandinavian Airlines, Delta, and American Airlines fly from Ireland to San Francisco in about 13h 35m. The time it takes to get you to your destination can typically vary by up to 20h 30m. Ireland and San Francisco are separated by a distance of 5084 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Ireland to San Francisco one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $315. However, be on the lookout for offers from Iberia and Aer Lingus, as they are both options that can get you from Ireland to San Francisco for a low price.

  • What are the most popular routes from Ireland to San Francisco?

    The most popular route from Ireland to San Francisco is Dublin - San Francisco. You may also consider Shannon - San Francisco or Donegal - San Francisco.

  • What are the most reliable airlines from Ireland to San Francisco?

    No one likes to see their flight delayed. When booking a flight from Ireland to San Francisco consider choosing Aer Lingus (93%), Iberia (93%) or British Airways (93%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Ireland to San Francisco?

    The cheapest flight price from Ireland to San Francisco is $513. On average you can expect to pay $670. The most popular route, (Dublin - San Francisco), can usually be booked for $509.

  • Can I find deals for flights from Ireland to San Francisco that include hotel bookings?

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

  • How can I find direct flights from Ireland to San Francisco?

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

  • Can I find deals for business class flights from Ireland to San Francisco?

    Yes. Cheapflights offers flight deals from Ireland to San Francisco 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 Ireland to San Francisco?

    Currently, October is the cheapest month in which you can book a flight from Ireland to San Francisco (average of $435). Flying from Ireland to San Francisco in July is currently the most expensive (average of $695). 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 Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Redwood City
Sunnyvale
Santa Clara
San Bruno
Daly City
San Carlos
Vallejo
Hollister
San Ramon
Foster City
Union City
Davis
Emeryville

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Alternative routes for Ireland to San Francisco

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Top 3 airlines flying from Ireland to San Francisco

Discover the top 3 airlines that operate flights from Ireland to San Francisco. 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$482Average$728FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$593Average$853FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$613Average$912FlexibilityNo cancel feeOn-time69%

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