HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$497+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Shannon to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 29, 2025.

This British Airways deal was found by Cheapflights users on 10/28. 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 11/117:50 amSNN - SFO
2 stops20h 38mBritish Airways
Thu 11/2010:16 amSFO - SNN
2 stops17h 14mBritish Airways
Deal found 10/28$628
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 11/112:00 pmSNN - SFO
1 stop17h 59mAmerican Airlines
Thu 11/2010:16 amSFO - SNN
2 stops17h 14mAmerican Airlines
Deal found 10/27$637
This Air Canada deal was found by Cheapflights users on 10/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:50 amSNN - SFO
2 stops33h 38mAir Canada
Thu 11/201:20 pmSFO - SNN
2 stops19h 25mAir Canada
Deal found 10/29$829
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:35 pmSNN - SFO
2 stops35h 35mMultiple Airlines
Wed 12/107:00 amSFO - SNN
1 stop15h 20mMultiple Airlines
Deal found 10/29$858
This lastminute.com deal was found by Cheapflights users on 10/29. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:25 pmSNN - SFO
2 stops35h 09mAir Canada
Wed 12/101:20 pmSFO - SNN
2 stops19h 25mAir Canada
Deal found 10/29$956
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Sun 11/167:50 amSNN - SFO
2 stops23h 13mAmerican Airlines
Sat 11/227:00 amSFO - SNN
2 stops20h 30mAmerican Airlines
Deal found 10/29$1,003
This TravelUp deal was found by Cheapflights users on 10/28. 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.
Sat 12/205:25 pmSNN - SFO
2 stops34h 19mBritish Airways
Sat 12/2711:20 amSFO - SNN
2 stops21h 25mBritish Airways
Deal found 10/28$1,027
This British Airways deal was found by Cheapflights users on 10/29. 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.
Fri 12/197:50 amSNN - SFO
2 stops19h 46mBritish Airways
Sat 12/275:30 pmSFO - SNN
1 stop17h 55mBritish Airways
Deal found 10/29$1,050

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$621
(American Airlines)

One-way from

$497
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$812
Provider with most accurate pricing for Shannon-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Shannon-San Francisco flights.
Search Deals
From Shannon to San Francisco
Search Deals
One-way flight from Shannon to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 29, 2025.
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

Thu 3/5

7:50 am-3:00 pm

1 stop15h 10m

San Francisco

Mon 3/9

11:34 am-4:45 pm

2 stops22h 11m

$621

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 3/5

7:50 am-3:00 pm

1 stop15h 10m

San Francisco

Mon 3/9

6:30 pm-4:45 pm

1 stop15h 15m

$624

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 11/11

7:50 am-8:56 pm

2 stops21h 06m

San Francisco

Thu 11/20

10:16 am-11:30 am

2 stops17h 14m

$628

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 1/9

7:50 am-12:47 am

2 stops24h 57m

San Francisco

Tue 1/20

7:30 am-4:45 pm

2 stops25h 15m

$629

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 3/13

7:50 am-4:00 pm

1 stop15h 10m

San Francisco

Tue 3/24

6:09 pm-7:25 pm

2 stops18h 16m

$631

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 11/11

2:00 pm-11:59 pm

1 stop17h 59m

San Francisco

Thu 11/20

10:16 am-11:30 am

2 stops17h 14m

$637

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 11/15

8:45 pm-2:35 pm

3 stops49h 50m

$497

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 11/16

3:55 pm-3:43 pm

3 stops55h 48m

$516

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 11/14

5:45 am-2:45 pm

2 stops41h 00m

$669

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 11/16

5:30 pm-3:00 pm

1 stop29h 30m

$694

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 14 results
1
2

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 October.
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.

Cheapflights Insights

Everything you need to know about your flight from Shannon to San Francisco

What is the cheapest month to book a flight from Shannon, Clare to San Francisco?

Currently, May is the cheapest month in which you can book a flight from Shannon, Clare to San Francisco (average of $441). Flying from Shannon, Clare to San Francisco in November is currently the most expensive (average of $835). 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.

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 American Airlines and British Airways fly from Shannon, Clare to San Francisco in about 15h 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.

  • What is the cheapest month to book a flight from Shannon, Clare to San Francisco?

    Currently, May is the cheapest month in which you can book a flight from Shannon, Clare to San Francisco (average of $441). Flying from Shannon, Clare to San Francisco in November is currently the most expensive (average of $835). 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
Watsonville
Sunnyvale
Santa Clara
Antioch
Manteca
Vallejo
Hollister
Vacaville
San Bruno
Foster City
Redwood City
Union City
Fairfield
Burlingame
Lodi

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.