HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Shannon

$669+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SNN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Shannon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Diego to Shannon

Best flights from San Diego to Shannon
Discover carefully curated flight deals from San Diego to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Air Canada deal was found by Cheapflights users on 12/9. 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.
Fri 1/3012:45 pmSAN - SNN
2 stops19h 00mAir Canada
Tue 2/37:50 amSNN - SAN
2 stops41h 34mAir Canada
Deal found 12/9$669
This British Airways deal was found by Cheapflights users on 12/9. 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.
Fri 1/306:00 pmSAN - SNN
1 stop13h 45mBritish Airways
Tue 2/38:05 pmSNN - SAN
1 stop28h 05mBritish Airways
Deal found 12/9$671
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/116:05 pmSAN - SNN
2 stops38h 40mMultiple Airlines
Thu 1/227:50 amSNN - SAN
2 stops36h 13mMultiple Airlines
Deal found 12/11$3,378

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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$469
(American Airlines)

Popular in

December

Cheapest in

March

Average price

$1,684
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. 45% potential increase in price ($759 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($85 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 12, 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 1/30

12:45 pm-3:45 pm

2 stops19h 00m

Shannon

Tue 2/3

7:50 am-5:24 pm

2 stops41h 34m

$669

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

$671

San DiegoShannon

SAN - SNN

SANSNN

San Diego

Sun 1/11

6:05 pm-4:45 pm

2 stops38h 40m

Shannon

Thu 1/22

7:50 am-12:03 pm

2 stops36h 13m

$3,378

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

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 12, 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 12, 2025.
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
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

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
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

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
11,050 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

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?

    Air Canada 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 5h 15m. 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 ($666) offers the cheapest pricing from San Diego to Shannon, Clare. American Airlines is 44% 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Dublin flights
San Francisco to Dublin flights
San Diego to Dublin flights
Ontario to Dublin flights
San Jose to Dublin flights
Santa Ana to Dublin flights
Oakland to Dublin flights
Las Vegas to Dublin flights
Burbank to Dublin flights
Sacramento to Dublin flights
Reno to Dublin flights
Los Angeles to Shannon flights
Fresno to Dublin flights
San Francisco to Cork flights
Los Angeles to Cork flights
Long Beach to Dublin flights
San Francisco to Shannon flights
Santa Ana to Shannon flights
San Jose to Shannon flights
Ontario to Shannon flights
Las Vegas to Shannon flights
Ontario to Cork flights
Palm Springs to Dublin flights
Santa Rosa to Dublin flights
San Francisco to Knock flights
San Diego to Cork flights
Las Vegas to Cork flights
San Luis Obispo to Dublin flights
Sacramento to Shannon flights
Monterey to Dublin flights
San Jose to Knock flights
San Jose to Cork flights
Santa Barbara to Dublin flights
Medford to Dublin flights
Arcata to Dublin flights
Redding to Dublin flights
Oakland to Shannon flights
Long Beach to Shannon flights
Burbank to Shannon flights
Oakland to Cork flights
Fresno to Shannon flights
Reno to Shannon flights
San Francisco to Donegal flights
Ontario to Milltown (Kerry) flights
Santa Barbara to Shannon flights

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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$518Average$683FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$666Average$886FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.