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Shannon

$543+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SNN
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
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 enero 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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.
vie. 4/176:20 am
SAN
-
SNN
2 stops19h 55m
United Airlines
vie. 4/2412:30 pm
SNN
-
SAN
1 stop16h 31m
United Airlines
Deal found 1/25$543
This American Airlines deal was found by Cheapflights users on 1/25. 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.
vie. 4/171:36 pm
SAN
-
SNN
2 stops18h 14m
American Airlines
sáb. 4/257:30 am
SNN
-
SAN
2 stops21h 03m
American Airlines
Deal found 1/25$586
This United Airlines deal was found by Cheapflights users on 1/26. 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.
vie. 4/247:40 pm
SAN
-
SNN
3 stops30h 35m
United Airlines
sáb. 5/212:30 pm
SNN
-
SAN
2 stops18h 04m
United Airlines
Deal found 1/26$593
This United Airlines deal was found by Cheapflights users on 1/25. 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.
vie. 4/176:20 am
SAN
-
SNN
2 stops19h 55m
United Airlines
dom. 4/2612:30 pm
SNN
-
SAN
1 stop16h 31m
United Airlines
Deal found 1/25$655
This British Airways deal was found by Cheapflights users on 1/26. 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.
mié. 3/410:50 am
SAN
-
SNN
2 stops16h 40m
British Airways
dom. 3/88:05 pm
SNN
-
SAN
1 stop28h 05m
British Airways
Deal found 1/26$678
This Air Canada deal was found by Cheapflights users on 1/24. 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.
mié. 3/412:40 pm
SAN
-
SNN
2 stops38h 50m
Air Canada
dom. 3/85:30 pm
SNN
-
SAN
2 stops49h 23m
Air Canada
Deal found 1/24$687
This United Airlines deal was found by Cheapflights users on 1/26. 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.
vie. 4/246:20 am
SAN
-
SNN
2 stops19h 55m
United Airlines
vie. 5/112:30 pm
SNN
-
SAN
1 stop15h 25m
United Airlines
Deal found 1/26$731
This Ovago deal was found by Cheapflights users on 1/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/242:16 pm
SAN
-
SNN
2 stops17h 34m
Multiple Airlines
dom. 5/32:30 pm
SNN
-
SAN
1 stop27h 23m
Multiple Airlines
Deal found 1/26$774
This American Airlines deal was found by Cheapflights users on 1/25. 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.
vie. 4/241:26 pm
SAN
-
SNN
2 stops18h 24m
American Airlines
sáb. 5/27:30 am
SNN
-
SAN
1 stop15h 25m
American Airlines
Deal found 1/25$775
This Air Canada deal was found by Cheapflights users on 1/26. 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.
vie. 4/241:10 pm
SAN
-
SNN
2 stops47h 25m
Air Canada
dom. 5/37:30 am
SNN
-
SAN
2 stops36h 48m
Air Canada
Deal found 1/26$787
This British Airways deal was found by Cheapflights users on 1/25. 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.
vie. 4/178:15 am
SAN
-
SNN
2 stops19h 05m
British Airways
dom. 4/267:30 am
SNN
-
SAN
2 stops21h 00m
British Airways
Deal found 1/25$788

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 enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$543
(United Airlines)

Popular in

December

Cheapest in

March
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 ($797 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($89 potential savings vs. average RT price).
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 enero 27, 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

vie. 4/17

6:20 am-10:15 am

2 stops19h 55m

Shannon

vie. 4/24

12:30 pm-9:01 pm

1 stop16h 31m

$543

San DiegoShannon

SAN - SNN

SANSNN

San Diego

vie. 4/17

1:36 pm-3:50 pm

2 stops18h 14m

Shannon

sáb. 4/25

7:30 am-8:33 pm

2 stops21h 03m

$586

San DiegoShannon

SAN - SNN

SANSNN

San Diego

vie. 4/24

7:40 pm-10:15 am

3 stops30h 35m

Shannon

sáb. 5/2

12:30 pm-10:34 pm

2 stops18h 04m

$593

San DiegoShannon

SAN - SNN

SANSNN

San Diego

vie. 4/17

6:20 am-10:15 am

2 stops19h 55m

Shannon

sáb. 4/25

12:30 pm-9:01 pm

1 stop16h 31m

$593

San DiegoShannon

SAN - SNN

SANSNN

San Diego

vie. 4/17

6:20 am-10:15 am

2 stops19h 55m

Shannon

dom. 4/26

12:30 pm-9:01 pm

1 stop16h 31m

$655

San DiegoShannon

SAN - SNN

SANSNN

San Diego

mié. 3/4

8:00 am-7:25 pm

2 stops27h 25m

Shannon

dom. 3/8

8:05 pm-5:10 pm

1 stop28h 05m

$678

San DiegoShannon

SAN - SNN

SANSNN

San Diego

jue. 3/26

7:00 am-5:55 am

1 stop15h 55m

$3,154

San DiegoShannon

SAN - SNN

SANSNN

San Diego

jue. 3/26

3:38 pm-4:45 pm

2 stops18h 07m

$3,721

San DiegoShannon

SAN - SNN

SANSNN

San Diego

jue. 3/26

12:55 pm-4:45 pm

3 stops20h 50m

$3,929

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

  • 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 enero 27, 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
9,205 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

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
9,205 reviews
United Airlines
7.4
Good
9,205 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

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
11,197 reviews
United Airlines
7.4
Good
9,205 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

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?

    United Airlines and American Airlines can get you from San Diego to Shannon, Clare in just under 18h 14m. Your travel time can differ by up to 1h 41m. 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 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 enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$518Average$685FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$640Average$854FlexibilityNo cancel feeOn-time69%

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