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Shannon

$564+ Cheap flights from San Diego (SAN) to Shannon (SNN)

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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SNN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from San Diego to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 September 11, 2025.

Round-trip from

$564
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$853
From San Diego to Shannon
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($231 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from San Diego to Shannon

Cheapest flights from San Diego to Shannon
Explore the most affordable flight options available from San Diego to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:24 amSAN - SNN
2 stops18h 06mAmerican Airlines
Wed 12/37:50 amSNN - SAN
2 stops22h 31mAmerican Airlines
Deal found 9/10$564
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:00 amSAN - SNN
3 stops18h 30mMultiple Airlines
Wed 12/37:50 amSNN - SAN
2 stops36h 13mMultiple Airlines
Deal found 9/10$720
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:00 amSAN - SNN
3 stops18h 30mAir Canada
Wed 12/37:50 amSNN - SAN
3 stops22h 40mAir Canada
Deal found 9/10$737
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:50 pmSAN - SNN
1 stop16h 45mAmerican Airlines
Sat 10/257:40 amSNN - SAN
2 stops22h 21mAmerican Airlines
Deal found 9/10$747
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/167:28 pmSAN - SNN
3 stops30h 47mUnited Airlines
Sat 10/2512:30 pmSNN - SAN
2 stops18h 14mUnited Airlines
Deal found 9/10$831
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/121:15 pmSAN - SNN
1 stop13h 55mMultiple Airlines
Sat 9/201:05 pmSNN - SAN
1 stop15h 28mMultiple Airlines
Deal found 9/11$1,007
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 9/1210:41 amSAN - SNN
2 stops15h 34mUnited Airlines
Sat 9/209:30 amSNN - SAN
2 stops15h 59mUnited Airlines
Deal found 9/11$1,012

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 September 11, 2025.
Use the filters below to find and compare flights from San Diego to Shannon that are best for you.

Fly from

San Diego

Fly to

Shannon

Route

Depart

Return

Price

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Wed 11/19

9:24 am-11:30 am

2 stops18h 06m

Shannon

Wed 12/3

7:50 am-10:21 pm

2 stops22h 31m

$564

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Wed 11/19

9:00 am-11:30 am

3 stops18h 30m

Shannon

Wed 12/3

7:50 am-12:03 pm

2 stops36h 13m

$720

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Wed 11/19

9:00 am-11:30 am

3 stops18h 30m

Shannon

Wed 12/3

7:50 am-10:30 pm

3 stops22h 40m

$737

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Thu 10/16

7:50 pm-8:35 pm

1 stop16h 45m

Shannon

Sat 10/25

7:40 am-10:01 pm

2 stops22h 21m

$747

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Thu 10/16

7:28 pm-10:15 am

3 stops30h 47m

Shannon

Sat 10/25

12:30 pm-10:44 pm

2 stops18h 14m

$831

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from San Diego to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from San Diego 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 Diego to Shannon

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

Currently, February is the cheapest month in which you can book a flight from San Diego to Shannon, Clare (average of $533). Flying from San Diego to Shannon, Clare in June is currently the most expensive (average of $926). 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 SAN to SNN?

Find hourly flight availability from San Diego 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 September 11, 2025.

One of the essential ways to save on airfare from San Diego to Shannon, Clare is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 5% on airfare.

How much does it cost to fly round-trip from San Diego 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 September 11, 2025.
Read through reviews of airlines operating flights from San Diego to Shannon, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from San Diego to Shannon. 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 San Diego to Shannon, Clare?

    American Airlines and Air Canada can get you from San Diego to Shannon, Clare in just under 18h 06m. Your travel time can differ by up to 24m. Airlines will cover a distance of 5132 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from San Diego to Shannon, Clare round-trip?

    According to our current data, United Airlines ($679), offers the cheapest pricing from San Diego to Shannon, Clare. United Airlines is 28% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from San Diego to Shannon, Clare (average of $533). Flying from San Diego to Shannon, Clare in June is currently the most expensive (average of $926). 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 Shannon?

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

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Top airline flying from San Diego to Shannon

Discover the top airline that operate flights from San Diego 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$679Average$895FlexibilityNo cancel feeOn-time69%

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