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Shannon

$335+ Cheap flights from San Diego (SAN) 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.
SAN — SNN
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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 August 20, 2025.

Round-trip from

$776
(United Airlines)

One-way from

$335
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$783
From San Diego to Shannon
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One-way flight from San Diego to Shannon
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Highest demand for flights based on searches. 19% potential increase in price ($232 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).
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Average for round-trip flights in August 2025
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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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/20. 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 9/1210:41 amSAN - SNN
1 stop12h 49mUnited Airlines
Sat 9/2012:30 pmSNN - SAN
1 stop14h 43mUnited Airlines
Deal found 8/20$776
This American Airlines deal was found by Cheapflights users on 8/18. 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 10/137:50 pmSAN - SNN
1 stop16h 45mAmerican Airlines
Tue 10/287:50 amSNN - SAN
2 stops21h 34mAmerican Airlines
Deal found 8/18$799
This KLM deal was found by Cheapflights users on 8/18. 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 8/18$827
This Air Canada deal was found by Cheapflights users on 8/18. 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 10/138:10 amSAN - SNN
2 stops24h 00mAir Canada
Tue 10/287:50 amSNN - SAN
3 stops32h 49mAir Canada
Deal found 8/18$880
This AranGrant deal was found by Cheapflights users on 8/19. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/194:40 pmSAN - SNN
1 stop34h 40mMultiple Airlines
Tue 9/304:55 pmSNN - SAN
1 stop29h 55mMultiple Airlines
Deal found 8/19$3,358
This Air Canada deal was found by Cheapflights users on 8/18. 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 9/1812:25 pmSAN - SNN
2 stops24h 10mMultiple Airlines
Mon 9/299:15 pmSNN - SAN
2 stops46h 16mMultiple Airlines
Deal found 8/18$5,055

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 August 20, 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

Fri 9/12

10:41 am-7:30 am

1 stop12h 49m

Shannon

Sat 9/20

12:30 pm-7:13 pm

1 stop14h 43m

$776

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 9/12

7:00 am-11:10 am

1 stop20h 10m

Shannon

Sat 9/20

1:05 pm-8:33 pm

1 stop15h 28m

$781

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Mon 10/13

7:50 pm-8:35 pm

1 stop16h 45m

Shannon

Tue 10/28

7:50 am-10:24 pm

2 stops21h 34m

$799

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sat 9/6

7:47 pm-10:55 am

3 stops55h 08m

$335

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sat 9/6

10:30 pm-7:30 am

1 stop25h 00m

$467

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sun 9/7

9:25 pm-11:20 am

3 stops53h 55m

$1,839

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 9/5

8:33 am-11:50 am

3 stops43h 17m

$2,107

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sat 9/6

1:02 pm-4:05 pm

2 stops19h 03m

$4,306

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sat 9/6

8:40 pm-5:55 am

1 stop25h 15m

$5,148

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

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 $931). 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 August 20, 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.

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 August 20, 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
8,928 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

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
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

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?

    United Airlines can get you from San Diego to Shannon, Clare in just under 12h 49m. Your travel time can differ by up to . Airlines will cover a distance of 5132 mi.

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

    According to our current data, United Airlines ($666), offers the cheapest pricing from San Diego to Shannon, Clare. United Airlines is 29% 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 $931). 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$666Average$895FlexibilityNo cancel feeOn-time69%

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