$426+ Cheap flights from Shannon (SNN) to San Francisco (SFO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Oct 24 — Oct 311
Round-trip
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.Cheap flight deals from Shannon to San Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from Shannon to San FranciscoExplore 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 September 24, 2026.
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 September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:30 pm -
1 stop14h 44m
Thu 10/228:20 am -
1 stop17h 55m
Deal found 9/24![United Airlines logo]()
$721
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:30 pm -
1 stop14h 44m
Fri 10/97:00 am -
2 stops19h 15m
Deal found 9/21![United Airlines logo]()
$739
This British Airways deal was found by Cheapflights users on 9/23. 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.
Sat 12/57:50 am -
1 stop15h 05m
Thu 12/105:25 pm -
1 stop18h 00m
Deal found 9/23![British Airways logo]()
$744
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:30 pm -
1 stop32h 19m
Fri 10/99:15 pm -
1 stop29h 00m
Deal found 9/21![United Airlines logo]()
$751
This lol.travel deal was found by Cheapflights users on 9/23. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:30 pm -
1 stop16h 52m
Thu 10/227:00 am -
1 stop19h 15m
Deal found 9/23![Lufthansa logo]()
$770
This Expedia deal was found by Cheapflights users on 9/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:50 am -
1 stop15h 05m
Sat 11/145:25 pm -
1 stop18h 00m
Deal found 9/23![British Airways logo]()
$776
This Mytrip deal was found by Cheapflights users on 9/23. 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.
Sat 12/55:10 pm -
2 stops27h 45m
Thu 12/104:40 pm -
1 stop18h 45m
Deal found 9/23![Multiple Airlines logo]()
$784
This United Airlines deal was found by Cheapflights users on 9/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:30 pm -
2 stops29h 00m
Wed 10/211:05 pm -
1 stop13h 10m
Deal found 9/20![United Airlines logo]()
$787
Best flights from Shannon to San FranciscoDiscover carefully curated flight deals from Shannon to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
Discover carefully curated flight deals from Shannon to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:30 pm -
1 stop14h 44m
Thu 10/228:20 am -
1 stop17h 55m
Deal found 9/24![United Airlines logo]()
$721
This British Airways deal was found by Cheapflights users on 9/23. 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.
Sat 12/57:50 am -
1 stop15h 05m
Thu 12/105:25 pm -
1 stop18h 00m
Deal found 9/23![British Airways logo]()
$744
This lol.travel deal was found by Cheapflights users on 9/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:50 am -
2 stops20h 22m
Sun 11/84:10 pm -
2 stops16h 35m
Deal found 9/20![British Airways logo]()
$805
Last-minute flights from Shannon to San FranciscoDiscover last-minute flight deals from Shannon to San Francisco. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from Shannon to San Francisco. Data last updated September 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:30 pm -
1 stop32h 19m
Fri 10/99:15 pm -
1 stop29h 00m
Deal found 9/21![United Airlines logo]()
$751
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:30 pm -
1 stop14h 44m
Fri 10/97:00 am -
2 stops19h 15m
Deal found 9/21![United Airlines logo]()
$739
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/412:30 pm -
2 stops28h 41m
Fri 10/98:32 am -
2 stops17h 43m
Deal found 9/21![United Airlines logo]()
$926
This United Airlines deal was found by Cheapflights users on 9/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:30 pm -
2 stops29h 00m
Wed 10/211:05 pm -
1 stop13h 10m
Deal found 9/20![United Airlines logo]()
$787
This Booking.com deal was found by Cheapflights users on 9/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:30 am -
1 stop14h 20m
Wed 10/214:35 pm -
1 stop15h 35m
Deal found 9/20![British Airways logo]()
$913
This United Airlines deal was found by Cheapflights users on 9/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:30 pm -
1 stop14h 44m
Thu 10/228:20 am -
1 stop17h 55m
Deal found 9/24![United Airlines logo]()
$721
This lol.travel deal was found by Cheapflights users on 9/23. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:30 pm -
1 stop16h 52m
Thu 10/227:00 am -
1 stop19h 15m
Deal found 9/23![Lufthansa logo]()
$770
This Gotogate deal was found by Cheapflights users on 9/23. 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.
Thu 10/157:30 am -
2 stops23h 50m
Thu 10/227:00 am -
1 stop19h 15m
Deal found 9/23![Multiple Airlines logo]()
$924
One-way flights from Shannon to San FranciscoSearch for one-way flight options from Shannon to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
Search for one-way flight options from Shannon to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 12/57:05 pm -
3 stops51h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$426
This Thrive Travel deal was found by Cheapflights users on 9/22. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:30 pm -
1 stop26h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$469
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Sun 10/1111:20 am -
3 stops59h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Wed 10/216:05 am -
3 stops40h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$510
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Mon 10/194:55 pm -
3 stops53h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$512
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Wed 10/142:05 pm -
2 stops32h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$519
Find 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 September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $721 (United Airlines) |
One-way from | $426 (Kiwi.com) |
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 7,457,451 searches. Data last updated September 24, 2026.
Use the filters below to find and compare flights from Shannon to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Tue 10/20
2:30 pm-9:25 am
1 stop26h 55m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$469
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Tue 10/20
9:15 pm-3:55 pm
2 stops26h 40m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$548
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Fri 10/23
6:30 am-5:35 pm
3 stops43h 05m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$665
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Thu 10/15
12:30 pm-7:14 pm
1 stop14h 44m
San Francisco
Thu 10/22
8:20 am-10:15 am
1 stop17h 55m
$721
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Sat 12/5
7:50 am-2:55 pm
1 stop15h 05m
San Francisco
Thu 12/10
5:25 pm-7:25 pm
1 stop18h 00m
$744
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Mon 11/2
7:50 am-8:12 pm
2 stops20h 22m
San Francisco
Sun 11/8
4:10 pm-4:45 pm
2 stops16h 35m
$805
Quickest round-trip
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Thu 10/22
7:30 am-1:50 pm
1 stop14h 20m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$895
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Fri 10/23
7:30 am-1:50 pm
1 stop14h 20m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,056
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Sat 10/10
12:30 pm-7:59 pm
1 stop15h 29m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,100
ShannonSan Francisco
SNN Shannon - SFO San Francisco
SNNSFO
Shannon
Fri 10/16
12:30 pm-7:59 pm
1 stop15h 29m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,100
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Shannon, Clare-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Shannon, Clare-San Francisco flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
SNN-SFO
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.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Walnut Creek
Emeryville
Burlingame
Rancho Cordova
San Bruno
Roseville
Hayward
Cupertino
Newark
Fairfield
San Ramon
Redwood City
Manteca
Vallejo
San Carlos
Turlock
Davis
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Shannon
Popular flights
San Francisco flight routes