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Shannon

$484+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SNN
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
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 December 5, 2025.

This British Airways deal was found by Cheapflights users on 12/3. 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 12/2412:58 pmSAN - SNN
2 stops38h 32mBritish Airways
Thu 1/88:05 pmSNN - SAN
2 stops32h 36mBritish Airways
Deal found 12/3$1,184
This British Airways deal was found by Cheapflights users on 12/3. 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.
Tue 12/237:30 pmSAN - SNN
2 stops56h 00mBritish Airways
Thu 1/88:05 pmSNN - SAN
2 stops32h 36mBritish Airways
Deal found 12/3$1,190
This British Airways deal was found by Cheapflights users on 12/3. 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 12/2412:58 pmSAN - SNN
2 stops38h 32mBritish Airways
Wed 1/77:50 amSNN - SAN
2 stops22h 36mBritish Airways
Deal found 12/3$1,303
This British Airways deal was found by Cheapflights users on 12/3. 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.
Tue 12/237:30 pmSAN - SNN
2 stops56h 00mBritish Airways
Tue 1/68:05 pmSNN - SAN
2 stops34h 21mBritish Airways
Deal found 12/3$1,309
This British Airways deal was found by Cheapflights users on 12/3. 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 12/246:15 amSAN - SNN
2 stops45h 15mBritish Airways
Fri 1/97:50 amSNN - SAN
2 stops22h 36mBritish Airways
Deal found 12/3$1,327
This British Airways deal was found by Cheapflights users on 12/3. 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.
Tue 12/237:30 pmSAN - SNN
2 stops56h 00mBritish Airways
Fri 1/97:50 amSNN - SAN
2 stops22h 36mBritish Airways
Deal found 12/3$1,333
This British Airways deal was found by Cheapflights users on 12/3. 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 12/246:15 amSAN - SNN
2 stops45h 15mBritish Airways
Mon 1/58:05 pmSNN - SAN
2 stops31h 07mBritish Airways
Deal found 12/3$1,412
This British Airways deal was found by Cheapflights users on 12/3. 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.
Tue 12/237:30 pmSAN - SNN
2 stops56h 00mBritish Airways
Mon 1/58:05 pmSNN - SAN
2 stops34h 21mBritish Airways
Deal found 12/3$1,418
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:35 pmSAN - SNN
2 stops46h 10mMultiple Airlines
Thu 1/82:45 pmSNN - SAN
1 stop36h 13mMultiple Airlines
Deal found 12/3$1,491
This Ovago deal was found by Cheapflights users on 12/3. 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.
Sat 12/2010:42 amSAN - SNN
2 stops22h 03mBritish Airways
Wed 1/78:05 pmSNN - SAN
2 stops27h 52mBritish Airways
Deal found 12/3$1,864
This British Airways deal was found by Cheapflights users on 12/3. 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.
Sun 12/219:40 amSAN - SNN
2 stops17h 50mBritish Airways
Tue 1/67:50 amSNN - SAN
2 stops19h 22mBritish Airways
Deal found 12/3$1,877
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:05 amSAN - SNN
2 stops24h 40mMultiple Airlines
Thu 1/82:45 pmSNN - SAN
1 stop37h 15mMultiple Airlines
Deal found 12/3$1,966

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 December 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$484
(American Airlines)

Popular in

December

Cheapest in

March

Average price

$1,492
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. 23% potential increase in price ($269 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 5, 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

Sat 1/17

9:21 am-11:30 am

2 stops18h 09m

Shannon

Sat 1/24

7:50 am-10:50 pm

2 stops23h 00m

$484

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 3/13

7:00 pm-3:45 pm

1 stop13h 45m

Shannon

Sun 3/22

7:50 am-5:05 pm

1 stop16h 15m

$519

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 1/30

6:00 pm-3:45 pm

1 stop13h 45m

Shannon

Tue 2/3

8:05 pm-4:10 pm

1 stop28h 05m

$646

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 1/23

8:25 am-11:30 am

2 stops19h 05m

Shannon

Tue 1/27

7:50 am-4:10 pm

1 stop16h 20m

$650

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Fri 1/30

12:45 pm-3:45 pm

2 stops19h 00m

Shannon

Tue 2/3

5:30 pm-12:03 pm

2 stops50h 33m

$669

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sat 1/17

9:00 am-4:45 pm

3 stops23h 45m

Shannon

Sat 1/24

7:50 am-12:03 pm

2 stops36h 13m

$680

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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 December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Shannon, Clare flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Shannon

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 December 5, 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 in the evening could potentially save you up to 15% 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 December 5, 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
9,064 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

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
9,064 reviews
United Airlines
7.4
Good
9,064 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

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?

    American Airlines and British Airways can get you from San Diego to Shannon, Clare in just under 13h 45m. Your travel time can differ by up to 4h 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 ($666), offers the cheapest pricing from San Diego to Shannon, Clare. United Airlines is 26% 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 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 December 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$666Average$886FlexibilityNo cancel feeOn-time69%

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