HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Shannon

$494+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SNN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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
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.

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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$611
(American Airlines)

One-way from

$494
(American Airlines)

Popular in

November

Cheapest in

October

Average price

$1,002
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. 6% potential increase in price ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 20, 2025.

This United deal was found by Cheapflights users on 2/19. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/305:00 amSFO - SNN
2 stops21h 15mUnited Airlines
Thu 5/1512:30 pmSNN - SFO
2 stops18h 30mUnited Airlines
Deal found 2/19$696
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/196:20 pmSFO - SNN
2 stops18h 05mAer Lingus
Wed 3/267:45 amSNN - SFO
1 stop15h 15mAer Lingus
Deal found 2/19$723
This Aer Lingus deal was found by Cheapflights users on 2/19. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/55:30 pmSFO - SNN
1 stop15h 15mMultiple Airlines
Sat 11/152:00 pmSNN - SFO
1 stop16h 09mMultiple Airlines
Deal found 2/19$870
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/113:54 pmSFO - SNN
2 stops15h 56mBritish Airways
Sun 4/209:15 pmSNN - SFO
2 stops26h 30mBritish Airways
Deal found 2/19$922
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 2/2110:20 amSFO - SNN
2 stops17h 10mAmerican Airlines
Thu 3/67:45 amSNN - SFO
2 stops24h 37mAmerican Airlines
Deal found 2/20$985
This Air France deal was found by Cheapflights users on 2/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:15 amSFO - SNN
2 stops20h 55mAir France
Mon 6/161:05 pmSNN - SFO
1 stop18h 15mAir France
Deal found 2/19$1,033
This Delta deal was found by Cheapflights users on 2/20. 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.
Sat 8/25:45 amSFO - SNN
2 stops21h 25mDelta
Sun 8/101:05 pmSNN - SFO
1 stop18h 15mDelta
Deal found 2/20$1,170
This Air Canada deal was found by Cheapflights users on 2/20. 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.
Mon 7/1410:56 pmSFO - SNN
2 stops28h 24mAir Canada
Sat 8/97:40 amSNN - SFO
2 stops37h 13mAir Canada
Deal found 2/20$4,233

Find flights from San Francisco to Shannon within your budget

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 February 20, 2025.

Fly from

San Francisco

Fly to

Shannon

Route

Depart

Return

Price

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Wed 3/19

6:20 pm-7:25 pm

2 stops18h 05m

Shannon

Wed 3/26

7:45 am-4:00 pm

1 stop15h 15m

$723

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Tue 7/29

7:00 am-11:10 am

1 stop20h 10m

Shannon

Tue 8/26

1:05 pm-11:20 pm

1 stop18h 15m

$741

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sat 4/5

10:38 am-10:15 am

2 stops15h 37m

Shannon

Sat 4/12

12:30 pm-7:24 am

2 stops26h 54m

$746

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Fri 4/11

3:54 pm-3:50 pm

2 stops15h 56m

Shannon

Sun 4/20

9:15 pm-3:45 pm

2 stops26h 30m

$922

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Thu 5/29

6:15 am-11:10 am

2 stops20h 55m

Shannon

Mon 6/16

1:05 pm-11:20 pm

1 stop18h 15m

$1,033

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Fri 3/14

6:00 am-6:00 am

2 stops17h 00m

Shannon

Fri 3/21

2:00 pm-12:20 am

1 stop17h 20m

$1,067

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sat 8/2

5:45 am-11:10 am

2 stops21h 25m

Shannon

Sun 8/10

1:05 pm-11:20 pm

1 stop18h 15m

$1,170

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Mon 7/14

10:56 pm-11:20 am

2 stops28h 24m

Shannon

Sat 8/9

7:40 am-12:53 pm

2 stops37h 13m

$4,233

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sat 4/5

11:32 am-11:20 am

2 stops15h 48m

$494

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sat 4/5

11:35 am-10:15 am

1 stop14h 40m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 12 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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.

Travel insights for flights from San Francisco to Shannon

Get recent, data-driven insights about flights from San Francisco to Shannon including ideal travel times, pricing trends, and more.

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 February 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 February 20, 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 February 20, 2025.
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

United Airlines
7.4
Good
8,766 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

Aer Lingus
7.0
Good
1,070 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

British Airways
6.6
Okay
6,763 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

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, American Airlines ($611), United Airlines ($696), and Aer Lingus ($723) offers the cheapest pricing from San Francisco to Shannon, Clare. You may be able to fly from San Francisco to Shannon, Clare for 36% 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 $497 and British Airways from $591 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Ennis

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 for San Francisco to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Dublin flights
San Francisco to Dublin flights
Ontario to Dublin flights
San Jose to Dublin flights
Oakland to Dublin flights
Santa Ana to Dublin flights
Burbank to Dublin flights
San Diego to Dublin flights
Las Vegas to Dublin flights
Sacramento to Dublin flights
Los Angeles to Shannon flights
Long Beach to Dublin flights
Medford to Dublin flights
Reno to Dublin flights
San Francisco to Cork flights
San Diego to Shannon flights
Los Angeles to Cork flights
Santa Rosa to Dublin flights
San Jose to Cork flights
Palm Springs to Dublin flights
Santa Ana to Shannon flights
Ontario to Shannon flights
San Jose to Shannon flights
Redding to Dublin flights
San Diego to Cork flights
San Luis Obispo to Dublin flights
Fresno to Dublin flights
Ontario to Cork flights
Reno to Shannon flights
Santa Barbara to Dublin flights
San Jose to Knock flights
Arcata to Dublin flights
Burbank to Shannon flights
Monterey to Dublin flights
Las Vegas to Shannon flights
Sacramento to Shannon flights
Oakland to Shannon flights
Santa Rosa to Shannon flights
San Francisco to Donegal flights
Fresno to Shannon flights
Las Vegas to Cork flights
San Francisco to Knock flights
San Francisco to Milltown (Kerry) flights
Santa Barbara to Shannon flights

Top 4 airlines flying from San Francisco to Shannon

Discover the top 4 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$631Average$1,012FlexibilityNo cancel feeOn-time71%
DeltaCheapest$700Average$970FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$704Average$972FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$752Average$1,152FlexibilityNo cancel feeOn-time70%
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.