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Shannon

$626+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SNN
Mar 22 — Mar 291
Sun 3/22
Sun 3/29
1 adult, Economy
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Cheap 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 February 20, 2026.

This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:20 am
SAN
-
SNN
2 stops14h 55m
United Airlines
Sat 8/2212:30 pm
SNN
-
SAN
1 stop15h 22m
United Airlines
Deal found 2/18$626
This United Airlines deal was found by Cheapflights users on 2/17. 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 9/1410:00 am
SAN
-
SNN
2 stops16h 15m
United Airlines
Wed 9/2312:30 pm
SNN
-
SAN
1 stop15h 22m
United Airlines
Deal found 2/17$654
This oojo deal was found by Cheapflights users on 2/17. 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.
Wed 3/49:10 pm
SAN
-
SNN
1 stop24h 45m
Multiple Airlines
Tue 3/242:45 pm
SNN
-
SAN
1 stop35h 34m
Multiple Airlines
Deal found 2/17$698
This United Airlines deal was found by Cheapflights users on 2/17. 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 9/238:50 am
SAN
-
SNN
2 stops17h 25m
United Airlines
Sun 10/412:30 pm
SNN
-
SAN
3 stops33h 11m
United Airlines
Deal found 2/17$773
This Gotogate deal was found by Cheapflights users on 2/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/31:10 pm
SAN
-
SNN
2 stops38h 10m
Multiple Airlines
Fri 4/109:15 pm
SNN
-
SAN
2 stops46h 38m
Multiple Airlines
Deal found 2/17$775
This British Airways deal was found by Cheapflights users on 2/17. 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 3/41:32 pm
SAN
-
SNN
2 stops19h 13m
British Airways
Sun 3/87:50 am
SNN
-
SAN
1 stop16h 15m
British Airways
Deal found 2/17$841

Find 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 February 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$626
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$656
Provider with most accurate pricing for San Diego-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Shannon flights.
Search Deals
From San Diego to Shannon
Search Deals
Highest demand for flights based on searches. 47% potential increase in price ($792 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($88 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 20, 2026.
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 3/4

9:10 pm-5:55 am

1 stop24h 45m

Shannon

Tue 3/24

2:45 pm-7:19 pm

1 stop35h 34m

$698

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 4/3

1:10 pm-11:20 am

2 stops38h 10m

Shannon

Fri 4/10

9:15 pm-11:53 am

2 stops46h 38m

$775

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Wed 3/4

7:10 am-11:30 am

2 stops20h 20m

Shannon

Sun 3/8

7:50 am-4:05 pm

1 stop16h 15m

$841

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Wed 3/4

6:30 am-11:30 am

3 stops21h 00m

Shannon

Tue 3/24

8:05 pm-11:53 am

2 stops46h 48m

$942

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Thu 3/26

9:05 pm-6:20 am

2 stops26h 15m

$4,259

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Thu 3/26

9:05 pm-5:55 am

1 stop25h 50m

$4,639

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Thu 3/26

11:03 am-4:45 pm

3 stops22h 42m

$5,190

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Compare providers for flights from San Diego 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 Diego to Shannon in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 Diego-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 Diego-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Shannon, Clare flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-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 Diego-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 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.

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, 2026.
Read through reviews of airlines operating flights from San Diego to Shannon, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,325 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

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
9,325 reviews
United Airlines
7.4
Good
9,325 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

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??
American Airlines
7.2
Good
11,320 reviews
United Airlines
7.4
Good
9,325 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

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?

    British Airways can get you from San Diego to Shannon, Clare in just under 20h 20m. Your travel time can differ by up to . Airlines will cover a distance of 5132 mi.

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

    According to our current data, American Airlines ($518), and United Airlines ($640) offers the cheapest pricing from San Diego to Shannon, Clare. American Airlines is 41% 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.

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 2 airlines flying from San Diego to Shannon

Discover the top 2 airlines 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 February 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$518Average$685FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$640Average$840FlexibilityNo cancel feeOn-time69%

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