$351+ Cheap flights from San Francisco (SFO) to Shannon (SNN)
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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SNN
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Shannon 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
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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 San Francisco to Shannon
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Best
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Cheapest flights from San Francisco to ShannonExplore the most affordable flight options available from San Francisco to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
Explore the most affordable flight options available from San Francisco to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/135:00 am
SFO
- SNN
1 stop18h 30m
United Airlines
Wed 9/1612:30 pm
SNN
- SFO
1 stop16h 45m
United Airlines
Deal found 6/7![United Airlines logo]()
$753
This Ticket deal was found by Cheapflights users on 6/9. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:55 am
SFO
- SNN
1 stop18h 15m
KLM
Wed 8/191:05 pm
SNN
- SFO
1 stop17h 28m
KLM
Deal found 6/9![KLM logo]()
$760
This Ticket deal was found by Cheapflights users on 6/9. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:13 am
SFO
- SNN
2 stops20h 57m
Air France
Wed 8/191:05 pm
SNN
- SFO
2 stops31h 09m
Air France
Deal found 6/9![Air France logo]()
$769
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/95:00 am
SFO
- SNN
1 stop18h 30m
United Airlines
Tue 10/1312:30 pm
SNN
- SFO
1 stop14h 44m
United Airlines
Deal found 6/7![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:00 am
SFO
- SNN
1 stop18h 30m
United Airlines
Wed 9/169:30 am
SNN
- SFO
1 stop16h 54m
United Airlines
Deal found 6/10![United Airlines logo]()
$805
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:05 am
SFO
- SNN
2 stops19h 10m
United Airlines
Tue 9/1512:30 pm
SNN
- SFO
1 stop15h 49m
United Airlines
Deal found 6/11![United Airlines logo]()
$810
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:00 am
SFO
- SNN
1 stop20h 10m
Delta
Tue 8/111:05 pm
SNN
- SFO
2 stops18h 49m
Delta
Deal found 6/6![Delta logo]()
$815
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:30 am
SFO
- SNN
1 stop15h 40m
Delta
Tue 8/181:05 pm
SNN
- SFO
1 stop17h 28m
Delta
Deal found 6/7![Delta logo]()
$826
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:15 am
SFO
- SNN
1 stop15h 15m
United Airlines
Tue 8/1812:30 pm
SNN
- SFO
2 stops17h 17m
United Airlines
Deal found 6/10![United Airlines logo]()
$830
Best flights from San Francisco to ShannonDiscover carefully curated flight deals from San Francisco to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
Discover carefully curated flight deals from San Francisco to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/135:00 am
SFO
- SNN
1 stop18h 30m
United Airlines
Wed 9/1612:30 pm
SNN
- SFO
1 stop16h 45m
United Airlines
Deal found 6/7![United Airlines logo]()
$753
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:30 am
SFO
- SNN
1 stop15h 40m
Delta
Tue 8/111:05 pm
SNN
- SFO
1 stop29h 10m
Delta
Deal found 6/6![Delta logo]()
$815
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:00 am
SFO
- SNN
1 stop18h 30m
United Airlines
Wed 9/169:30 am
SNN
- SFO
1 stop16h 54m
United Airlines
Deal found 6/10![United Airlines logo]()
$805
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:05 am
SFO
- SNN
2 stops19h 10m
United Airlines
Tue 9/1512:30 pm
SNN
- SFO
1 stop15h 49m
United Airlines
Deal found 6/10![United Airlines logo]()
$809
Last-minute flights from San Francisco to ShannonDiscover last-minute flight deals from San Francisco to Shannon. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Shannon. Data last updated June 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/126:38 am
SFO
- SNN
2 stops16h 52m
United Airlines
Wed 7/229:30 am
SNN
- SFO
2 stops20h 20m
United Airlines
Deal found 6/8![United Airlines logo]()
$852
This KLM deal was found by Cheapflights users on 6/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:00 am
SFO
- SNN
1 stop20h 10m
KLM
Wed 7/291:05 pm
SNN
- SFO
2 stops18h 47m
KLM
Deal found 6/9![KLM logo]()
$851
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/158:15 am
SFO
- SNN
2 stops15h 15m
United Airlines
Tue 7/219:30 am
SNN
- SFO
1 stop15h 49m
United Airlines
Deal found 6/8![United Airlines logo]()
$847
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:00 am
SFO
- SNN
1 stop20h 10m
Delta
Mon 8/31:05 pm
SNN
- SFO
1 stop19h 31m
Delta
Deal found 6/10![Delta logo]()
$891
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:40 am
SFO
- SNN
2 stops15h 35m
United Airlines
Mon 8/312:30 pm
SNN
- SFO
2 stops28h 42m
United Airlines
Deal found 6/10![United Airlines logo]()
$895
This KLM deal was found by Cheapflights users on 6/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2311:50 pm
SFO
- SNN
1 stop27h 20m
KLM
Thu 7/301:05 pm
SNN
- SFO
2 stops35h 07m
KLM
Deal found 6/8![KLM logo]()
$876
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:00 am
SFO
- SNN
1 stop20h 10m
Delta
Tue 8/111:05 pm
SNN
- SFO
2 stops18h 49m
Delta
Deal found 6/6![Delta logo]()
$815
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:30 am
SFO
- SNN
1 stop15h 40m
Delta
Tue 8/181:05 pm
SNN
- SFO
1 stop17h 28m
Delta
Deal found 6/7![Delta logo]()
$826
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:15 am
SFO
- SNN
1 stop15h 15m
United Airlines
Tue 8/1812:30 pm
SNN
- SFO
2 stops17h 17m
United Airlines
Deal found 6/10![United Airlines logo]()
$830
This KAYAK deal was found by Cheapflights users on 6/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:05 am
SFO
- SNN
1 stop17h 25m
Lufthansa
Tue 8/189:30 am
SNN
- SFO
1 stop17h 42m
Lufthansa
Deal found 6/7![Lufthansa logo]()
$875
One-way flights from San Francisco to ShannonSearch for one-way flight options from San Francisco to Shannon. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
Search for one-way flight options from San Francisco to Shannon. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:10 pm
SFO
- SNN
1 stop14h 00m
Delta
Deal found 6/8![Delta logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 8/35:35 pm
SFO
- SNN
2 stops46h 00m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 8/265:40 pm
SFO
- SNN
2 stops39h 35m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:20 pm
SFO
- SNN
2 stops29h 40m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Thu 8/276:00 am
SFO
- SNN
3 stops43h 35m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/313:43 pm
SFO
- SNN
3 stops42h 32m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$414
This Air France deal was found by Cheapflights users on 6/9. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:13 am
SFO
- SNN
2 stops20h 57m
Air France
Deal found 6/9![Air France logo]()
$420
This oojo deal was found by Cheapflights users on 6/9. 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.
Sun 9/65:08 pm
SFO
- SNN
2 stops19h 27m
British Airways
Deal found 6/9![British Airways logo]()
$435
This oojo deal was found by Cheapflights users on 6/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:30 pm
SFO
- SNN
1 stop17h 05m
British Airways
Deal found 6/10![British Airways logo]()
$437
Find flight deals from San Francisco to Shannon
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Shannon (SNN). 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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $753 (United Airlines) |
One-way from | $351 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $1,153 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Shannon 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 June 11, 2026.
Use the filters below to find and compare flights from San Francisco to Shannon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Sun 9/13
5:00 am-7:30 am
1 stop18h 30m
Shannon
Wed 9/16
12:30 pm-9:15 pm
1 stop16h 45m
$753
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Tue 9/1
5:00 am-7:30 am
1 stop18h 30m
Shannon
Wed 9/16
9:30 am-6:24 pm
1 stop16h 54m
$805
Quickest round-trip
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Tue 9/1
7:05 am-10:15 am
2 stops19h 10m
Shannon
Tue 9/15
12:30 pm-8:19 pm
1 stop15h 49m
$809
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 7/27
11:30 am-11:10 am
1 stop15h 40m
Shannon
Tue 8/11
1:05 pm-10:15 am
1 stop29h 10m
$815
Cheapest one-way
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Sun 9/6
8:55 am-11:10 am
1 stop18h 15m
$351
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 9/7
5:00 am-7:30 am
2 stops18h 30m
$351
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 9/7
11:47 am-11:10 am
1 stop15h 23m
$351
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 8/3
5:35 pm-12:15 am
3 stops46h 40m
$397
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Wed 11/11
5:20 pm-7:00 am
2 stops29h 40m
$402
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Fri 7/31
3:43 pm-6:15 pm
3 stops42h 32m
$414
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Shannon
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 San Francisco to Shannon in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Shannon, Clare flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Shannon, Clare flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Shannon, Clare 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 San Francisco-Shannon, Clare 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 San Francisco to Shannon
Have a flexible travel schedule? Discover the best time to fly to Shannon from San Francisco with our price prediction graph.
SFO-SNN
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 San Francisco to Shannon
What is the cheapest month to book a flight from San Francisco to Shannon, Clare?
Currently, January is the cheapest month in which you can book a flight from San Francisco to Shannon, Clare (average of $602). Flying from San Francisco to Shannon, Clare in June is currently the most expensive (average of $1,153). 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.
How much does it cost to fly round-trip from San Francisco to Shannon, Clare?
Reviews of airlines servicing Shannon
Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated June 11, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from San Francisco to Shannon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Shannon. 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 Shannon?
Book flights to Shannon if you plan to visit one of these locationsEnnis
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San Francisco and Shannon flights
Browse other San Francisco and Shannon flight options. Last updated on June 11, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on June 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Shannon
Explore flights to Shannon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 11, 2026.
Top 5 airlines flying from San Francisco to Shannon
Discover the top 5 airlines that operate flights from San Francisco to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$533 | Average$684 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$591 | Average$977 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$593 | Average$961 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$800 | Average$1,163 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$875 | Average$984 | FlexibilityNo cancel fee | On-time76% |