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$455+ Cheap flights from Shannon (SNN) to San Diego (SAN)

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SAN
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Shannon to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to San Diego (SAN). 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 July 29, 2025.

Round-trip from

$894
(United Airlines)

One-way from

$455
(Kiwi.com)
From Shannon to San Diego
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One-way flight from Shannon to San Diego
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Find flight deals from Shannon to San Diego

Cheapest flights from Shannon to San Diego
Explore the most affordable flight options available from Shannon to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/27. 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 9/109:30 amSNN - SAN
1 stop14h 20mUnited Airlines
Wed 9/178:05 amSAN - SNN
2 stops18h 10mUnited Airlines
Deal found 7/27$894
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:05 pmSNN - SAN
1 stop30h 42mDelta
Mon 9/16:30 amSAN - SNN
1 stop20h 40mDelta
Deal found 7/28$932
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:50 amSNN - SAN
2 stops20h 30mAmerican Airlines
Tue 11/188:25 amSAN - SNN
2 stops19h 05mAmerican Airlines
Deal found 7/26$972
This Expedia deal was found by Cheapflights users on 7/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:40 amSNN - SAN
1 stop18h 20mAer Lingus
Wed 9/177:50 pmSAN - SNN
1 stop16h 45mAer Lingus
Deal found 7/27$985
This British Airways deal was found by Cheapflights users on 7/26. 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.
Fri 11/147:50 amSNN - SAN
1 stop16h 20mBritish Airways
Tue 11/1810:48 amSAN - SNN
2 stops16h 42mBritish Airways
Deal found 7/26$1,009
This Bravofly deal was found by Cheapflights users on 7/28. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/131:05 pmSNN - SAN
2 stops42h 16mMultiple Airlines
Sun 8/178:00 amSAN - SNN
2 stops43h 10mMultiple Airlines
Deal found 7/28$1,177
This Bravofly deal was found by Cheapflights users on 7/28. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/131:05 pmSNN - SAN
1 stop15h 36mAir France
Sun 8/178:00 amSAN - SNN
2 stops43h 10mAir France
Deal found 7/28$1,182

Cheapflights Fare Finder

 
Customize your flight search to find flights from Shannon to San Diego 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 July 29, 2025.
Use the filters below to find and compare flights from Shannon to San Diego that are best for you.

Fly from

Shannon

Fly to

San Diego

Route

Depart

Return

Price

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Wed 9/10

9:30 am-10:14 pm

3 stops20h 44m

San Diego

Wed 9/17

8:05 am-7:30 am

2 stops15h 25m

$894

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Mon 8/25

1:05 pm-11:47 am

1 stop30h 42m

San Diego

Mon 9/1

6:30 am-11:10 am

1 stop20h 40m

$932

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Fri 11/14

7:50 am-8:20 pm

2 stops20h 30m

San Diego

Tue 11/18

8:25 am-11:30 am

2 stops19h 05m

$972

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Wed 9/10

7:40 am-6:00 pm

1 stop18h 20m

San Diego

Wed 9/17

7:50 pm-8:35 pm

1 stop16h 45m

$985

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Fri 11/14

7:50 am-4:10 pm

1 stop16h 20m

San Diego

Tue 11/18

10:48 am-11:30 am

2 stops16h 42m

$1,009

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Wed 8/13

1:05 pm-11:21 pm

2 stops42h 16m

San Diego

Sun 8/17

8:00 am-11:10 am

2 stops43h 10m

$1,177

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Wed 8/13

1:05 pm-8:41 pm

1 stop15h 36m

San Diego

Sun 8/17

8:00 am-11:10 am

2 stops43h 10m

$1,182

ShannonSan Diego

SNN - SAN

SNNSAN

Shannon

Fri 9/5

4:55 pm-11:24 pm

3 stops38h 29m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Shannon to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Shannon 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 San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated July 29, 2025.
Peruse reviews from past customers who have flown with Delta, Air France, and United Airlines from Shannon to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.1
Good
1,190 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Shannon to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    United Airlines, at $894, was found to be the cheapest airline from Shannon, Clare to San Diego.Alternate airlines to your destination round-trip include Delta and American Airlines.

  • Can I find deals for flights from Shannon to San Diego that include hotel bookings?

    Yes. In addition to deals on Shannon to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Shannon to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Shannon to San Diego.

  • Can I find deals for business class flights from Shannon to San Diego?

    Yes. Cheapflights offers flight deals from Shannon to San Diego 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 Shannon, Clare to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Shannon, Clare to San Diego (average of $286). Flying from Shannon, Clare to San Diego in March is currently the most expensive (average of $366). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
Poway
National City
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Imperial Beach
La Mesa
Alpine
Santee

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