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$406+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
feb. 5 — feb. 121
jue. 2/5
jue. 2/12
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 enero 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$637
(British Airways)

One-way from

$406
(KAYAK)
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 enero 6, 2026.

This British Airways deal was found by Cheapflights users on 1/4. 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.
mié. 2/187:50 amSNN - SFO
2 stops21h 23mBritish Airways
mié. 2/252:58 pmSFO - SNN
2 stops17h 47mBritish Airways
Deal found 1/4$637
This TravelUp deal was found by Cheapflights users on 1/4. 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.
dom. 2/88:05 pmSNN - SFO
2 stops30h 25mBritish Airways
lun. 2/168:00 amSFO - SNN
2 stops24h 45mBritish Airways
Deal found 1/4$661
This British Airways deal was found by Cheapflights users on 1/5. 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.
vie. 5/159:15 pmSNN - SFO
1 stop24h 35mBritish Airways
mar. 5/264:40 pmSFO - SNN
2 stops19h 55mBritish Airways
Deal found 1/5$679
This TravelUp deal was found by Cheapflights users on 1/4. 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.
dom. 3/12:00 pmSNN - SFO
1 stop29h 10mBritish Airways
sáb. 3/711:35 pmSFO - SNN
2 stops22h 45mBritish Airways
Deal found 1/4$683
This British Airways deal was found by Cheapflights users on 1/4. 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.
jue. 4/237:40 amSNN - SFO
2 stops22h 24mBritish Airways
lun. 4/2710:50 amSFO - SNN
2 stops16h 30mBritish Airways
Deal found 1/4$684
This American Airlines deal was found by Cheapflights users on 1/5. 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.
lun. 1/262:45 pmSNN - SFO
2 stops26h 59mAmerican Airlines
lun. 2/27:00 amSFO - SNN
2 stops15h 20mAmerican Airlines
Deal found 1/5$694
This American Airlines deal was found by Cheapflights users on 1/4. 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.
dom. 3/17:50 amSNN - SFO
2 stops21h 33mAmerican Airlines
sáb. 3/76:00 amSFO - SNN
2 stops16h 20mAmerican Airlines
Deal found 1/4$724
This American Airlines deal was found by Cheapflights users on 1/4. 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.
dom. 2/87:50 amSNN - SFO
2 stops23h 22mAmerican Airlines
lun. 2/165:30 pmSFO - SNN
1 stop15h 15mAmerican Airlines
Deal found 1/4$738
This American Airlines deal was found by Cheapflights users on 1/5. 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.
jue. 4/231:45 pmSNN - SFO
2 stops18h 09mAmerican Airlines
lun. 4/277:00 amSFO - SNN
1 stop14h 55mAmerican Airlines
Deal found 1/5$740
This American Airlines deal was found by Cheapflights users on 1/6. 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.
vie. 5/151:45 pmSNN - SFO
2 stops18h 32mAmerican Airlines
mar. 5/265:30 amSFO - SNN
2 stops15h 55mAmerican Airlines
Deal found 1/6$756

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 enero 6, 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

dom. 3/1

7:50 am-11:00 pm

2 stops23h 10m

San Francisco

sáb. 3/7

10:36 am-4:45 pm

2 stops22h 09m

$637

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

mié. 2/18

7:50 am-9:13 pm

2 stops21h 23m

San Francisco

mié. 2/25

2:58 pm-4:45 pm

2 stops17h 47m

$637

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

dom. 2/8

8:05 pm-6:30 pm

2 stops30h 25m

San Francisco

lun. 2/16

8:00 am-4:45 pm

2 stops24h 45m

$661

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

vie. 5/15

4:55 pm-1:50 pm

1 stop28h 55m

San Francisco

mar. 5/26

3:00 pm-4:10 pm

2 stops17h 10m

$679

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

jue. 4/23

7:40 am-11:09 pm

2 stops23h 29m

San Francisco

lun. 4/27

1:40 pm-4:10 pm

2 stops18h 30m

$683

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

lun. 3/9

8:05 pm-4:35 pm

2 stops27h 30m

$406

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

lun. 3/9

8:05 am-12:45 pm

3 stops59h 40m

$431

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

dom. 5/3

8:35 pm-12:31 pm

3 stops47h 56m

$455

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

dom. 5/3

9:15 pm-1:50 pm

1 stop24h 35m

$475

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

sáb. 6/27

8:45 pm-4:15 pm

2 stops51h 30m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 12 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 23h 10m. 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
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Santa Cruz
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Livermore
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Redwood City
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San Bruno
Daly City
Manteca
Turlock
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