Cheap Flights from San Diego to Shannon from $1,338

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Flight deals from San Diego to Shannon

Looking for a cheap last-minute deal or the best return flight from San Diego to Shannon Airport? If you want to travel next month, return fares start from $1,446. Find the lowest prices on one-way and return tickets right here.

Shannon.$1,338 per passenger.Departing Tue, 8 Sep, returning Tue, 15 Sep.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Tue, 8 Sep, arriving in Shannon.Inbound indirect flight with United, departs from Shannon on Tue, 15 Sep, arriving in San Diego International.Price includes taxes and charges.From $1,338, select.

Shannon.$1,446 per passenger.Departing Mon, 6 Jul, returning Wed, 22 Jul.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Mon, 6 Jul, arriving in Shannon.Inbound indirect flight with United, departs from Shannon on Wed, 22 Jul, arriving in San Diego International.Price includes taxes and charges.From $1,446, select.

Shannon.$1,496 per passenger.Departing Tue, 25 Aug, returning Sun, 30 Aug.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Tue, 25 Aug, arriving in Shannon.Inbound indirect flight with United, departs from Shannon on Sun, 30 Aug, arriving in San Diego International.Price includes taxes and charges.From $1,496, select.

Shannon.$1,544 per passenger.Departing Wed, 29 Jul, returning Sat, 29 Aug.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from San Diego International on Wed, 29 Jul, arriving in Shannon.Inbound indirect flight with Air France, departs from Shannon on Sat, 29 Aug, arriving in San Diego International.Price includes taxes and charges.From $1,544, select.

Shannon.$1,630 per passenger.Departing Mon, 1 Mar, returning Mon, 8 Mar.Return flight with British Airways.Outbound indirect flight with British Airways, departs from San Diego International on Mon, 1 Mar, arriving in Shannon.Inbound indirect flight with British Airways, departs from Shannon on Mon, 8 Mar, arriving in San Diego International.Price includes taxes and charges.From $1,630, select.

Shannon.$1,756 per passenger.Departing Tue, 30 Jun, returning Tue, 7 Jul.Return flight with United.Outbound indirect flight with United, departs from San Diego International on Tue, 30 Jun, arriving in Shannon.Inbound indirect flight with United, departs from Shannon on Tue, 7 Jul, arriving in San Diego International.Price includes taxes and charges.From $1,756, select.

Shannon.$2,048 per passenger.Departing Tue, 22 Dec, returning Thu, 31 Dec.Return flight with British Airways.Outbound indirect flight with British Airways, departs from San Diego International on Tue, 22 Dec, arriving in Shannon.Inbound indirect flight with British Airways, departs from Shannon on Thu, 31 Dec, arriving in San Diego International.Price includes taxes and charges.From $2,048, select.

Find the cheapest month to fly from San Diego to Shannon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego to Shannon flights are currently cheapest in September.

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San Diego to Shannon: Alternative routes

Compare routes from San Diego to Shannon below. You may find an airport to fly into that's cheaper, faster, or easier than Shannon.

San Diego to Shannon: Flight information

The things to know before you go.

Cheapest flight found	$1,338
Cheapest month to fly	September

Finding cheap flights from San Diego to Shannon: Frequently asked questions

How much are return flights from San Diego to Shannon?

The best price we found for a return flight from San Diego to Shannon is $1,338. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from San Diego to Shannon?

Currently, there are no airlines that fly direct from San Diego to Shannon. But we found flights with one stop from $1,338.

How many flights are there a week from San Diego to Shannon?

As of June 2026, there are no flights flying from San Diego to Shannon.

When is the cheapest time to fly from San Diego to Shannon?

The cheapest month to fly from San Diego to Shannon is usually September.

Which upcoming date is cheapest to fly from San Diego to Shannon Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Shannon Airport on Tuesday, 8 September 2026.

Can I get a direct flight from San Diego to Shannon Airport?

No airlines currently offer direct flights between San Diego and Shannon Airport. Most routes have one or more stops.

How can I find the best flight deal to Shannon?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Shannon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Shannon?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Shannon is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from San Diego to Shannon with?

The cheapest airline that flies to Shannon is United .

Flying from San Diego to Shannon Airport (SNN): What you need to know

Shannon is eight hours ahead of San Diego. Shannon Airport is located in Shannon, which follows the UTC+0 timezone.
Your flight from San Diego to SNN won't wait if you're late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.
With more people on the move during busy periods like July, be at your terminal even earlier. Two hours for domestic flights and as much as four for international journeys will allow for additional wait times. Remember things also get busy during major holidays like Fourth of July.

Airports in San Diego

San Diego International Airport (SAN)

A stopover is the perfect opportunity to break up your journey and perhaps even explore a different city. When browsing cheap flights from San Diego to SNN leaving from San Diego International Airport (SAN), deselect the 'Direct flights only' box to find all potential stops. Here's where you could connect through:
- Chicago O'Hare International Airport (ORD)
- New York John F. Kennedy International Airport (JFK)
- Newark Liberty International Airport (EWR)
Travelling from central San Diego to SAN takes around 25 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 5 kilometres in 15 minutes or so, depending on traffic conditions.
Looking for a comfortable hotel near San Diego International Airport? If you've booked an early flight from San Diego to Shannon Airport, these accommodation options will put you conveniently close to check-in:
Of the departures from San Diego International Airport, 74% arrive as scheduled at their destination.
SAN is located at N Harbour Dr.

McClellan-Palomar Airport (CLD)

The distance from San Diego's city centre to CLD is about 48 kilometres. Consider transport options and potential delays when working out the fastest route to the airport.
Get your holiday started early with an extra night away from home. Before your San Diego to SNN flight, kick back in one of these hotels close to McClellan-Palomar Airport:
Most flights that leave McClellan-Palomar Airport arrive at their destination on schedule. It boasts an on-time performance rate of 88%.

About Shannon Airport (SNN)

Have a late flight from San Diego to Shannon Airport? Don't let it stretch your travel day into tomorrow. Check in to one of these hotels near SNN and fast-forward to bedtime:
Lock in the best rate by booking your vehicle around four weeks before your San Diego to Shannon Airport flight.

Getting from Shannon Airport (SNN) to central Shannon

Shannon Airport to the centre of Shannon is roughly 3 kilometres. If you're getting a taxi or renting a car, plan in advance to make your trip as smooth as possible. Journey times can vary based on traffic conditions and the time of day.
Travelling by public transport takes about 15 minutes.

How to find the cheapest flights from San Diego to Shannon Airport (SNN)

$619 is currently the lowest price for a one-way ticket from San Diego to Shannon Airport. Return flights start at $1,338. These fares may change depending on availability.
Booking early is often the key to scoring a cheap flight from San Diego to SNN. Fares tend to rise as demand increases, so the closer your departure date, the more you'll likely pay.
If you're flexible with your travel plans, try using the 'Whole month' search tool. It'll show you the lowest price in each month when searching for your San Diego to Shannon Airport ticket.
Spend less time searching for cheap plane tickets from San Diego to SNN by setting up a Price Alert. We'll send you an email or notification on the app when a lower fare pops up.
Find a cheap flight from San Diego to Shannon Airport by using the search filters. Choose your ideal times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

The best time to fly from San Diego to Shannon Airport (SNN)

December is the quietest month for flights from San Diego to Shannon Airport (SNN), while June is the busiest. Pick the best time to visit Shannon based on whether you want a laid-back vibe or a lively atmosphere.
Lock in a San Diego to SNN plane ticket departing in July if you want to visit the city during its warmest month. Expect temperatures in Shannon to range from 9ºC to 22ºC.
January sees temperatures of between 0ºC and 9ºC. Search for cheap tickets from San Diego to Shannon Airport around that time if you'd rather travel in cooler conditions.

More about Shannon

When it comes to looking for somewhere to lay your head, you'll find the best stays in Shannon right here. Check out these hotels as soon as you've booked your flight from San Diego to Shannon Airport:
Your trip to Shannon isn't complete without checking out the sights. Leading attractions worth exploring include View Point Bunratty Castle, Mooghaun Hill Fort and Shannon Aviation Museum.

Explore more of Ireland

Shannon has plenty going for it, but there are so many other parts of Ireland waiting to be discovered. Around 193 kilometres northeast of Shannon, a visit to Dublin will keep your itinerary packed. Start with leading attractions like Guinness Storehouse, Trinity College Library and St. Patrick's Cathedral.