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Cheap flights from Ireland to San Francisco from £300

DUB — SFO
19 Sep — 26 Sep1
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

Tue 13/1013:00 -
Nonstop10h 55m
Tue 20/1016:51 -
1 stop13h 39m
Deal found 20/8£300
Tue 17/1119:05 -
1 stop27h 45m
Wed 2/1216:45 -
1 stop17h 35m
Deal found 18/8£403
Wed 7/1019:05 -
1 stop27h 35m
Wed 14/1016:45 -
1 stop17h 35m
Deal found 18/8£407
Mon 30/1112:35 -
2 stops34h 15m
Sat 12/1216:45 -
2 stops34h 00m
Deal found 20/8£410
Sun 8/1111:20 -
2 stops35h 30m
Sat 14/1116:45 -
2 stops34h 00m
Deal found 20/8£412
Fri 13/1112:30 -
1 stop34h 20m
Sun 15/1116:45 -
1 stop35h 00m
Deal found 17/8£413
Tue 13/1011:40 -
2 stops35h 00m
Tue 20/1016:45 -
2 stops33h 40m
Deal found 20/8£414

Find flight deals from Ireland to San Francisco

Round-trip from

£300

Popular in

August

Cheapest in

January

Average price

£735

Good round-trip deal

£504 or less

Good one-way deal

£587 or less
13/10-20/10
  • 13/10-20/10
  • 1 total stop
  • 24h 34m total
  • Ireland to San Francisco
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£80 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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

 
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
Fastest return journey

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Tue 13/10

11:35-18:24

1 stop14h 49m

San Francisco

Tue 20/10

10:30-08:25

1 stop13h 55m

£368

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Thu 14/1

12:30-14:50

1 stop34h 20m

San Francisco

Mon 18/1

16:45-11:45

1 stop35h 00m

£412

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Tue 13/10

11:40-14:40

2 stops35h 00m

San Francisco

Tue 20/10

16:45-10:25

2 stops33h 40m

£414

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Wed 7/10

11:40-14:40

2 stops35h 00m

San Francisco

Wed 14/10

16:45-19:05

2 stops18h 20m

£429

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Mon 5/10

12:40-14:40

1 stop34h 00m

San Francisco

Mon 19/10

16:45-11:50

1 stop35h 05m

£430

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Wed 4/11

12:35-14:50

2 stops34h 15m

San Francisco

Sat 14/11

16:45-10:45

2 stops34h 00m

£435

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Mon 5/10

19:50-14:40

2 stops26h 50m

San Francisco

Mon 12/10

16:45-18:20

1 stop17h 35m

£437
Cheapest one-way

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Mon 5/10

12:40-14:40

1 stop34h 00m

£445

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Sun 13/9

23:10-12:15

2 stops45h 05m

£469

DublinSan Francisco

DUB Dublin - SFO San Francisco

DUBSFO

Dublin

Wed 7/10

12:15-01:00

2 stops20h 45m

£470

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 16 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

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, January is the cheapest month in which you can book a flight from Ireland to San Francisco (average of £418). Flying from Ireland to San Francisco in August is currently the most expensive (average of £735). 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?

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 14% of weekly flights between Ireland and San Francisco have experienced delays in the past year, with the average delay time being 118 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?

Wednesday tends to have the lowest number of delays on this route, whereas Friday 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 14% of flights being delayed.

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 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing San Francisco

Check out reviews from past customers who have flown with Aer Lingus,American Airlines, andIberia 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.
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,711 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
American Airlines
7.1
Good
11,972 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Iberia
7.0
Good
3,258 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
British Airways
6.7
Okay
8,179 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Crew

8.1

Comfort

7.2

Overall

7.3

Boarding

7.5

Entertainment

7.0

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

  • 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?

    The Ireland to San Francisco flight path was viewed by 104 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?

    There are many flights that can get you from Ireland to San Francisco in 34h 20m. Fly via Scandinavian Airlines to get the fastest option. Ireland and San Francisco are separated by a distance of 5081 mi.

  • 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 American Airlines (71%), Aer Lingus (71%) and Iberia (71%).

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

    While on average a flight from Ireland to San Francisco is generally £823, our data shows the cheapest flight currently is £491. When looking at the most popular route, (Dublin - San Francisco), you can expect to pay £504 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, January is the cheapest month in which you can book a flight from Ireland to San Francisco (average of £418). Flying from Ireland to San Francisco in August is currently the most expensive (average of £735). 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
San Bruno
Roseville
Newark
Bodega Bay
Sunnyvale
South San Francisco

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Top 4 airlines flying from Ireland to San Francisco

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£324Average£455FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£377Average£536FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£414Average£544FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£474Average£639FlexibilityNo cancel feeOn-time77%
Search Iberia flights

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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.

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