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Shannon

$354+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SNN
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Shannon are usually found in October or January, booked 23 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap 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 March 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$724
(KLM)

One-way from

$354
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,072
Provider with most accurate pricing for San Francisco-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Shannon flights.
Search Deals
From San Francisco to Shannon
Search Deals
One-way flight from San Francisco to Shannon
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from San Francisco to Shannon

Cheapest flights from San Francisco to Shannon
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 March 21, 2025.

This KLM deal was found by Cheapflights users on 3/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/297:00 amSFO - SNN
1 stop20h 10mMultiple Airlines
Wed 8/271:05 pmSNN - SFO
1 stop18h 15mMultiple Airlines
Deal found 3/20$724
This Air France deal was found by Cheapflights users on 3/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/298:58 amSFO - SNN
2 stops18h 12mAir France
Thu 6/51:05 pmSNN - SFO
1 stop15h 42mAir France
Deal found 3/20$738
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1910:45 pmSFO - SNN
1 stop28h 25mDelta
Wed 9/31:05 pmSNN - SFO
1 stop20h 20mDelta
Deal found 3/20$741
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Fri 9/128:45 amSFO - SNN
2 stops14h 45mUnited Airlines
Tue 9/239:30 amSNN - SFO
1 stop16h 58mUnited Airlines
Deal found 3/20$742
This American Airlines deal was found by Cheapflights users on 3/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/265:49 pmSFO - SNN
2 stops18h 46mAmerican Airlines
Thu 6/57:40 amSNN - SFO
2 stops20h 35mAmerican Airlines
Deal found 3/20$753
This British Airways deal was found by Cheapflights users on 3/19. 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 3/1910:52 pmSFO - SNN
2 stops37h 33mBritish Airways
Wed 3/267:45 amSNN - SFO
1 stop19h 00mBritish Airways
Deal found 3/19$955
This Cheapflightsfares deal was found by Cheapflights users on 3/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/25:45 pmSFO - SNN
2 stops18h 50mAer Lingus
Sun 7/69:15 pmSNN - SFO
2 stops26h 30mAer Lingus
Deal found 3/21$1,049
This JetBlue deal was found by Cheapflights users on 3/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/46:00 amSFO - SNN
1 stop15h 55mJetBlue
Sun 5/111:45 pmSNN - SFO
1 stop18h 20mJetBlue
Deal found 3/20$2,074
This Air Canada deal was found by Cheapflights users on 3/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/172:45 pmSFO - SNN
2 stops21h 50mAir Canada
Sat 4/267:40 amSNN - SFO
2 stops21h 11mAir Canada
Deal found 3/20$3,945
This Lufthansa deal was found by Cheapflights users on 3/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/167:00 amSFO - SNN
1 stop19h 15mLufthansa
Sun 4/2712:30 pmSNN - SFO
2 stops31h 50mLufthansa
Deal found 3/20$11,758

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 March 21, 2025.
Use the filters below to find and compare flights from San Francisco to Shannon that are best for you.

Fly from

San Francisco

Fly to

Shannon

Route

Depart

Return

Price

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Tue 7/29

7:00 am-11:10 am

1 stop20h 10m

Shannon

Wed 8/27

1:05 pm-11:20 pm

1 stop18h 15m

$724

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Thu 5/29

8:58 am-11:10 am

2 stops18h 12m

Shannon

Thu 6/5

1:05 pm-8:47 pm

1 stop15h 42m

$738

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Tue 8/19

10:45 pm-11:10 am

1 stop28h 25m

Shannon

Wed 9/3

1:05 pm-1:25 am

1 stop20h 20m

$741

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Fri 9/12

8:45 am-7:30 am

2 stops14h 45m

Shannon

Tue 9/23

9:30 am-6:28 pm

1 stop16h 58m

$742

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Mon 5/26

5:49 pm-8:35 pm

2 stops18h 46m

Shannon

Thu 6/5

7:40 am-8:15 pm

2 stops20h 35m

$753

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Wed 7/2

5:45 pm-8:35 pm

2 stops18h 50m

Shannon

Sun 7/6

9:15 pm-3:45 pm

2 stops26h 30m

$1,049

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Mon 8/4

12:03 pm-4:10 pm

2 stops20h 07m

Shannon

Wed 9/3

7:40 am-1:50 pm

1 stop14h 10m

$1,703

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sun 5/4

6:00 am-5:55 am

1 stop15h 55m

Shannon

Sun 5/11

1:45 pm-12:05 am

1 stop18h 20m

$2,074

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Thu 4/17

2:45 pm-8:35 pm

2 stops21h 50m

Shannon

Sat 4/26

7:40 am-8:51 pm

2 stops21h 11m

$3,945

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Wed 4/16

7:00 am-10:15 am

1 stop19h 15m

Shannon

Sun 4/27

12:30 pm-12:20 pm

2 stops31h 50m

$11,758

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 15 results
1
2

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 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.
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

How far ahead should I book a flight from San Francisco to Shannon, Clare?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Shannon. Price data was last updated on March 14, 2025.

The best time to book flights from San Francisco to Shannon, Clare is 23 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to Shannon, Clare (average of $533). Flying from San Francisco to Shannon, Clare in June is currently the most expensive (average of $1,007). 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.

What is the cheapest time of day to fly from SFO to SNN?

Find hourly flight availability from San Francisco to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.

It’s optimal to fly from San Francisco to Shannon, Clare in the afternoon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from San Francisco to Shannon, Clare?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Shannon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Shannon, Clare flight should consider departing on Monday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Shannon by month

Plan your trip to Shannon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Shannon, Clare ranges from 2.3 - 4.1 inches per month. October is typically the wettest month, when rainfall can reach 4.1 in. April is typically the driest time to visit Shannon, Clare when rainfall is around 2.3 in.

Temperature in Shannon by month

Plan your trip to Shannon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Shannon, Clare, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 March 21, 2025.
Read reviews from past customers who have flown Delta, Air France and United Airlines from San Francisco to Shannon. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,895 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,895 reviews
Delta
8.0
Very good
7,895 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,422 reviews
Delta
8.0
Very good
7,895 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,895 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.3
Good
2,937 reviews
Delta
8.0
Very good
7,895 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,895 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying from San Francisco to Shannon, Clare round-trip?

    According to our current data, Air France ($738), Delta ($741), and United Airlines ($742) offers the cheapest pricing from San Francisco to Shannon, Clare. You may be able to fly from San Francisco to Shannon, Clare for 22% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Francisco to Shannon, Clare one-way?

    One-way options have recently been found by users for as low as $494 on American Airlines. Other airlines that offer cheap prices include United Airlines from $548 and Aer Lingus from $567 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Shannon 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 San Francisco to Shannon, Clare?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Shannon, Clare (average of $533). Flying from San Francisco to Shannon, Clare in June is currently the most expensive (average of $1,007). 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

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See prices for flight routes from nearby airports that may be better suited for you.
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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 March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$592Average$1,050FlexibilityNo cancel feeOn-time71%
DeltaCheapest$670Average$946FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$704Average$959FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$727Average$914FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$752Average$1,152FlexibilityNo cancel feeOn-time70%
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