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$448+ Cheap flights from Shannon (SNN) 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
1 adult, Economy
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Cheap flight deals from Shannon to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to San Francisco (SFO). 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 January 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$669
(oojo)

One-way from

$448
(Kiwi.com)
Provider with most accurate pricing for Shannon-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Shannon-San Francisco flights.
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From Shannon to San Francisco
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One-way flight from Shannon to San Francisco
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Find flight deals from Shannon to San Francisco

Cheapest flights from Shannon to San Francisco
Explore the most affordable flight options available from Shannon to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.

This Mytrip deal was found by Cheapflights users on 1/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:50 am
SNN
-
SFO
2 stops35h 45m
Multiple Airlines
Sun 3/85:40 pm
SFO
-
SNN
2 stops22h 10m
Multiple Airlines
Deal found 1/10$629
This oojo deal was found by Cheapflights users on 1/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:40 am
SNN
-
SFO
2 stops42h 03m
British Airways
Tue 5/264:35 pm
SFO
-
SNN
1 stop15h 35m
British Airways
Deal found 1/12$669
This TravelUp deal was found by Cheapflights users on 1/12. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/282:45 pm
SNN
-
SFO
2 stops38h 03m
British Airways
Sun 2/16:37 am
SFO
-
SNN
2 stops15h 43m
British Airways
Deal found 1/12$678
This Gotogate deal was found by Cheapflights users on 1/10. 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.
Tue 4/77:40 am
SNN
-
SFO
1 stop14h 10m
Multiple Airlines
Mon 4/134:35 pm
SFO
-
SNN
1 stop34h 45m
Multiple Airlines
Deal found 1/10$679
This American Airlines deal was found by Cheapflights users on 1/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/292:45 pm
SNN
-
SFO
2 stops26h 59m
American Airlines
Mon 2/27:00 am
SFO
-
SNN
2 stops15h 20m
American Airlines
Deal found 1/11$690
This British Airways deal was found by Cheapflights users on 1/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:50 am
SNN
-
SFO
2 stops20h 23m
British Airways
Wed 3/184:59 pm
SFO
-
SNN
2 stops16h 46m
British Airways
Deal found 1/11$699
This British Airways deal was found by Cheapflights users on 1/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:55 pm
SNN
-
SFO
1 stop28h 55m
British Airways
Mon 4/137:00 am
SFO
-
SNN
2 stops20h 20m
British Airways
Deal found 1/10$717
This British Airways deal was found by Cheapflights users on 1/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:40 am
SNN
-
SFO
2 stops22h 24m
British Airways
Mon 4/2710:50 am
SFO
-
SNN
2 stops16h 30m
British Airways
Deal found 1/11$722
This American Airlines deal was found by Cheapflights users on 1/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:45 pm
SNN
-
SFO
2 stops18h 09m
American Airlines
Mon 4/277:00 am
SFO
-
SNN
1 stop15h 00m
American Airlines
Deal found 1/11$737

Cheapflights Fare Finder

 
Customize your flight search to find flights from Shannon 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 January 12, 2026.
Use the filters below to find and compare flights from Shannon to San Francisco that are best for you.

Fly from

Shannon

Fly to

San Francisco

Route

Depart

Return

Price

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/15

7:40 am-5:43 pm

2 stops42h 03m

San Francisco

Tue 5/26

4:35 pm-4:10 pm

1 stop15h 35m

$669

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Wed 3/11

7:50 am-9:13 pm

2 stops20h 23m

San Francisco

Wed 3/18

4:59 pm-4:45 pm

2 stops16h 46m

$699

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 3/9

2:45 pm-11:12 am

2 stops27h 27m

San Francisco

Mon 3/16

6:24 am-5:55 am

1 stop16h 31m

$713

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/23

7:40 am-10:45 pm

2 stops23h 05m

San Francisco

Mon 4/27

10:50 am-11:20 am

2 stops16h 30m

$722

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/23

2:30 pm-11:59 pm

1 stop17h 29m

San Francisco

Mon 4/27

7:00 am-6:00 am

1 stop15h 00m

$739

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/15

1:45 pm-12:17 am

2 stops18h 32m

San Francisco

Tue 5/26

5:30 am-5:25 am

2 stops15h 55m

$750

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 6/7

11:20 am-7:27 am

2 stops52h 07m

$448

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 4/19

9:15 pm-5:40 pm

1 stop28h 25m

$481

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 3/27

10:00 pm-2:40 pm

3 stops47h 40m

$559

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 4/19

7:40 am-11:54 pm

2 stops24h 14m

$765

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 14 results
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Compare providers for flights from Shannon to San Francisco

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 Shannon to San Francisco in January.
ProviderPrice AccuracyTrust Score*
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 Shannon, Clare-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Shannon, Clare-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Shannon, Clare-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon, Clare-San Francisco 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 Shannon, Clare-San Francisco 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 Shannon to San Francisco

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

Related info for your journey

Find useful and relevant information for your journey from Shannon to San Francisco. 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 Shannon, Clare to San Francisco?

    Airlines like British Airways fly from Shannon, Clare to San Francisco in about 42h 03m. The time it takes to get you to your destination can typically vary by up to . Shannon, Clare and San Francisco are separated by a distance of 5032 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Shannon 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.

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
Santa Clara
Livermore
Watsonville
Redwood City
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San Bruno
Daly City
Manteca
Turlock
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