Cheap flights from Ireland to San Francisco from £427

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SFO
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to San Francisco

Enter your travel dates to find the best prices.

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 4 May 2026.

Thu 14/509:30
DUB
-
SFO
1 stop22h 29m
Finnair
Thu 28/508:00
SFO
-
DUB
1 stop17h 45m
Finnair
Deal found 4/5£465
Tue 17/1112:30
DUB
-
SFO
1 stop34h 05m
Scandinavian Airlines
Wed 2/1216:40
SFO
-
DUB
1 stop17h 40m
Scandinavian Airlines
Deal found 30/4£465
Wed 16/919:05
DUB
-
SFO
1 stop27h 35m
Scandinavian Airlines
Sun 4/1016:45
SFO
-
DUB
1 stop17h 35m
Scandinavian Airlines
Deal found 30/4£468
Sat 23/513:00
DUB
-
SFO
Nonstop10h 55m
Aer Lingus
Fri 29/517:35
SFO
-
DUB
Nonstop10h 10m
Aer Lingus
Deal found 2/5£469
Fri 15/509:30
DUB
-
SFO
1 stop22h 29m
Finnair
Tue 26/510:20
SFO
-
DUB
1 stop17h 30m
Finnair
Deal found 2/5£471
Wed 27/509:30
DUB
-
SFO
1 stop22h 17m
Finnair
Wed 3/608:00
SFO
-
DUB
1 stop17h 45m
Finnair
Deal found 29/4£471
Mon 15/605:55
DUB
-
SFO
1 stop14h 55m
Air France
Mon 22/605:40
SFO
-
DUB
1 stop20h 20m
Air France
Deal found 1/5£474
Fri 15/505:55
DUB
-
SFO
1 stop13h 50m
Delta
Tue 26/514:43
SFO
-
DUB
2 stops19h 42m
Delta
Deal found 30/4£474

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 4 May 2026.

Round-trip from

£465

One-way from

£427

Popular in

August

Cheapest in

January

Average price

£592

Good round-trip deal

£506 or less
Finnair
  • Finnair
  • 21/5-30/5
  • 2 total stops
  • 40h 02m total
  • Ireland to San Francisco
15/7
  • 15/7
  • 3 total stops
  • 51h 40m total
  • Ireland to San Francisco
Highest demand for flights based on searches. 14% potential increase in price (£63 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in May 2026
Price to beat on a round-trip flight from Ireland to San Francisco.

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 4 May 2026.
Use the filters below to find and compare flights from Ireland to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 15/5

05:55-11:45

1 stop13h 50m

San Francisco

Fri 19/6

23:56-10:00

1 stop26h 04m

£480

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 29/5

05:55-11:45

1 stop13h 50m

San Francisco

Fri 5/6

21:54-10:45

1 stop28h 51m

£481

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Mon 15/6

05:55-18:58

2 stops21h 03m

San Francisco

Mon 22/6

18:25-07:55

1 stop29h 30m

£481

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 20/6

09:30-23:57

1 stop22h 27m

San Francisco

Sun 12/7

08:00-09:45

1 stop17h 45m

£550

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 29/5

07:30-19:47

2 stops20h 17m

San Francisco

Fri 5/6

18:20-18:20

2 stops16h 00m

£595

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 20/6

13:15-22:46

1 stop17h 31m

San Francisco

Sun 12/7

12:42-15:25

2 stops18h 43m

£623

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Thu 13/8

11:10-14:40

2 stops35h 30m

San Francisco

Thu 27/8

16:45-18:20

1 stop17h 35m

£654

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 17/6

11:10-23:25

2 stops20h 15m

San Francisco

Sun 21/6

18:50-20:55

2 stops18h 05m

£703
Fastest return journey

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 13/6

09:20-23:06

1 stop21h 46m

San Francisco

Sat 20/6

13:50-11:10

1 stop13h 20m

£716
Cheapest one-way

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sun 14/6

18:50-17:05

2 stops54h 15m

£434

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 return 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

How far ahead should I book a flight from Ireland to San Francisco?

The price you pay for your flight from Ireland to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 31 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 £210). Flying from Ireland to San Francisco in July is currently the most expensive (average of £496). 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 4 May 2026.

When flying from Ireland to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from Ireland to San Francisco delayed?

About 11% of weekly flights between Ireland and San Francisco have experienced delays in the past year, with the average delay time being 142 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?

Tuesday 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 past year, Aer Lingus have had the lowest number of delays on this route, with just 11% 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 4 May 2026.
Check out reviews from past customers who have flown with United Airlines,Aer Lingus, andAmerican Airlines from Ireland to San Francisco to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

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

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

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

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

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

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

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

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

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

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 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?

    Located just 11.0 mi from the city center, San Francisco (SFO) is the airport most travelers will use when flying to San Francisco from Ireland.

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

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

    There are many flights that can get you from Ireland to San Francisco in 13h 50m. Fly via Delta or Finnair to get the fastest option. Ireland and San Francisco are separated by a distance of 5081 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The top 3 most reliable airlines when flying from Ireland to San Francisco are Aer Lingus (91%), Iberia (91%) and British Airways (91%).

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

    While on average a flight from Ireland to San Francisco is generally £968, our data shows the cheapest flight currently is £451. When looking at the most popular route, (Dublin - San Francisco), you can expect to pay £560 for that flight.

  • 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 holiday 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 £210). Flying from Ireland to San Francisco in July is currently the most expensive (average of £496). 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ireland to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Ireland to San Francisco

Discover the top 8 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 858,174 searches. Data last updated 4 May 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£314Average£334FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£373Average£583FlexibilityNo cancel feeOn-time77%
Search Air France flights
Aer LingusCheapest£379Average£561FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£399Average£457FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£416Average£594FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£434Average£626FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£477Average£570FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air CanadaCheapest£505Average£623FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ireland to San Francisco?

Deals for Ireland to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ireland to San Francisco?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Ireland.

Can Cheapflights find flights from Ireland to San Francisco with no change fees?

Need flexible booking options for your flight to San Francisco from Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ireland to San Francisco become cheaper?

Of course! You can now track prices for flights from Ireland to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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