LHR - SNN

$57 Find Cheap Flights from London Heathrow Airport to Shannon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Shannon departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Shannon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Shannon, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Heathrow to Shannon (LHR-SNN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Shannon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Heathrow to Shannon

Tue, Oct 7 - Tue, Oct 14
Aer Lingus Logo
2:40 pm - 4:10 pmLHR-SNN
1h 30mnonstop
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
$104Aer Lingus
Find Deal
Mon, Oct 20 - Fri, Oct 24
Aer Lingus Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
$107Aer Lingus
Find Deal
Thu, Oct 9 - Mon, Oct 13
Aer Lingus Logo
2:40 pm - 4:10 pmLHR-SNN
1h 30mnonstop
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
$124Aer Lingus
Find Deal
Sun, Nov 16 - Sat, Nov 22
Aer Lingus Logo
6:05 pm - 7:25 pmLHR-SNN
1h 20mnonstop
Aer Lingus Logo
5:25 pm - 6:50 pmSNN-LHR
1h 25mnonstop
$129Aer Lingus
Find Deal
Mon, Nov 3 - Sat, Nov 15
Aer Lingus Logo
10:00 am - 11:30 amLHR-SNN
1h 30mnonstop
Aer Lingus Logo
5:25 pm - 6:50 pmSNN-LHR
1h 25mnonstop
$137Aer Lingus
Find Deal
Mon, Nov 3 - Sat, Nov 15
Aer Lingus Logo
6:05 pm - 7:25 pmLHR-SNN
1h 20mnonstop
Aer Lingus Logo
5:25 pm - 6:50 pmSNN-LHR
1h 25mnonstop
$138Aer Lingus
Find Deal
Mon, Oct 20 - Fri, Oct 24
 Logo
11:05 am - 10:50 pmLHR-SNN
11h 45m2 stops
 Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
Fri, Oct 24 - Mon, Oct 27
British Airways Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
British Airways Logo
7:50 am - 9:15 amSNN-LHR
1h 25mnonstop
$295British Airways
Find Deal
Sat, Nov 1 - Fri, Nov 14
British Airways Logo
10:00 am - 11:30 amLHR-SNN
1h 30mnonstop
British Airways Logo
5:30 pm - 6:55 pmSNN-LHR
1h 25mnonstop
$296British Airways
Find Deal
Wed, Sep 24 - Sun, Sep 28
British Airways Logo
2:40 pm - 4:10 pmLHR-SNN
1h 30mnonstop
British Airways Logo
7:40 am - 9:05 amSNN-LHR
1h 25mnonstop
$318British Airways
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
BA's Euro Traveller includes a carry-on bag.
Aer Lingus offers 17” wide seats with 30” pitch.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Aer Lingus
Cheapest • from $104 (round-trip)
Aer Lingus
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 38% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$104
Overall average: $189
Aer Lingus
Tue 10/7Tue 10/14
LHR - SNN • Non-stop
Cheapest one-way
$57
Typical prices: $89-125
Aer Lingus
Wed 10/1
LHR - SNN • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Shannon!
Expert advice

Expert advice for your flight from Heathrow to Shannon

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
British Airways

BA offers 31-inch legroom on most planes, ensuring comfort for short-haul flights.


BA's Euro Traveller fares include a carry-on bag, unlike many budget carriers.

Aer Lingus

Aer Lingus offers 17” wide seats with 30” pitch on short-haul flights.


Aer Lingus AerSpace fare provides front-row seating with blocked middle seats for extra comfort.

Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Booking Insights

KAYAK's insights & trends for Heathrow to Shannon flights

Get data-powered insights and trends into flights from Heathrow to Shannon to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London Heathrow Airport to Shannon?

The average price of all round-trip flights from London Heathrow Airport to Shannon clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Shannon on a Friday and more expensive on a Monday. On your return trip to London Heathrow Airport, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

What is the cheapest month to fly from London Heathrow Airport to Shannon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Shannon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Shannon is January, where tickets cost $108 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $220 and $199 respectively.

How far in advance should I book a flight from London Heathrow Airport to Shannon?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Shannon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London Heathrow Airport to Shannon, you should book around 4 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$57
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from London Heathrow Airport to Shannon

When to book flights from Heathrow to Shannon

Are your dates flexible? Find out the best times to travel from Heathrow to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Shannon flights

  • Can I find direct flights from London airports to Shannon Airport?

    Yes, you can fly direct from three airports in London to Shannon. With London Heathrow Airport, London Gatwick Airport, and London Stansted Airport offering regular flights with airlines such as Ryanair and Aer Lingus, you’ll be at your destination in no time at all.

  • Can I fast-track at London airports?

    To make sure you aren’t in a rush at the airport, you can get a fast track to ensure you fly through security. For around £12.50 at Heathrow Airport, or £5 Gatwick and Stansted, you can ensure that you are not held up by queues. All you need to do is book 24h in advance and show your QR code on arrival during the time slot you are given.

  • Are there currency exchange bureaus available upon arrival at Shannon Airport?

    Shannon Airport has a range of currency exchange options for you when you land in Ireland. You can either use the ATMs located in the arrivals hall to withdraw Euros for your trip, or you can visit the International Currency Exchange office in the customs hall of the airport to exchange your Pounds Sterling for Euros.

  • How can I get from Shannon Airport to Shannon?

    You can get a bus from the airport to the city centre, which will take you about 10min and cost about €2.40 (£2.10). You should get on the 343 bus towards Limerick, which can be found just in front of the airport. You can also walk the distance in about 1h, should your bags not be too heavy.

  • What is the cheapest flight from London Heathrow Airport to Shannon?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Shannon was $57 for a one-way ticket and $104 for a round-trip.

  • Do I need a passport to fly between London Heathrow Airport and Shannon?

    Yes

  • Which airports will I be using when flying from London Heathrow Airport to Shannon?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Shannon, also known as Shannon.

  • Which airlines offer Wi-Fi service onboard planes from London Heathrow Airport to Shannon?

    Virgin Atlantic, KLM, Air France, and Delta offer inflight Wi-Fi service on the London Heathrow Airport to Shannon flight route.

  • Which aircraft models fly most regularly from London Heathrow Airport to Shannon?

    The Airbus A321neo is the aircraft model that flies most regularly on the London Heathrow Airport to Shannon flight route.

  • Which airline alliances offer flights from London Heathrow Airport to Shannon?

    oneworld, and Star Alliance are the airline alliances operating flights between London Heathrow Airport and Shannon, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from London Heathrow Airport to Shannon?

    There are nonstop flights from London Heathrow Airport to Shannon on a daily basis.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Shannon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from London Heathrow Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Shannon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Shannon with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and SNN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Shannon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Shannon from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to Shannon

  • Looking for a cheap flight? 25% of our users found flights on this route for $148 or less one-way and $170 or less round-trip.
  • There are 3 airports that offer direct flights from London to Shannon Airport. If you fly from Heathrow Airport, you have easy access from the city centre, whereas Stansted Airport is good for those in north London and Gatwick is good for those in the south of the city.
  • From Shannon Airport, not only are you in a great position to see Shannon itself, but you are also well positioned to see other places too. Limerick is about 25min away by car, whilst Galway is around a 1h drive away.
  • Ahead of your flight from London, you can relax at one of the lounges at London Airports. At London Heathrow and London Gatwick, you can pay about £25 to use a lounge like Aspire Lounge, which offers complimentary food and drinks as well as Wi-Fi. Similarly, at Stansted, you can get these facilities at Escape Lounge for about £20.
  • Make sure you have exchanged your currency ahead of your flight to Shannon, so you can get going as soon as you land. At Heathrow Terminals 2, 3, and 4 you can use a Travelex desk, and at Terminal 5 there is a Moneycorp. For those flying direct from Gatwick or Stansted Airport, you can use an International Currency Exchange bureau. These are located prominently in the departure areas, so you won't find them hard to locate.
  • On arrival at Shannon Airport, you can catch up with all the latest news, video calls to your family and friends, and check your emails by using the free Wi-Fi on offer at the airport.

Prefer to fly direct from London Heathrow Airport to Shannon?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London Heathrow to Shannon.
Find which airlines fly direct from London Heathrow Airport to Shannon Airport, which days they fly and book direct flights.

Direct departures

London Heathrow to Shannon

Monday

Aer Lingus

Aer Lingus

Tuesday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Thursday

Aer Lingus

Aer Lingus

Friday

Aer Lingus

Aer Lingus

Saturday

Aer Lingus

Aer Lingus

Sunday

Aer Lingus

Aer Lingus

See more direct flights

Direct returns

Shannon to London Heathrow

Monday

Aer Lingus

Aer Lingus

Tuesday

Aer Lingus

Aer Lingus

Wednesday

Aer Lingus

Aer Lingus

Thursday

Aer Lingus

Aer Lingus

Friday

Aer Lingus

Aer Lingus

Saturday

Aer Lingus

Aer Lingus

Sunday

Aer Lingus

Aer Lingus

See more direct flights

Reviews of the top airline flying from Heathrow to Shannon

 
See real verified KAYAK customer reviews for airlines flying from London to Shannon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Shannon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1271 reviews
6.5Food
6.9Entertainment
7.3Boarding
8.0Crew
7.1Comfort
Airline reviews

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

6.0 GoodAnonymous, Sep 2025IND - DUB
Read more Aer Lingus reviews

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

It was truly a horrible flight. We were delayed almost 2 hours. The seats were so tiny, my legs were hurting the entire flight. When i finally made it to Ireland i missed my connecting flight because we left Newark late. I will most likely never fly Aer Lingus again

Coming from the EU to the USA, Aer Lingus is a very good choice. You clear U.S. border control while still at the departure airport, so when you land in the States, you don’t need to go through the entry process again — very efficient and fast. In terms of comfort, Aer Lingus is better than the usual EU carriers like KLM, Lufthansa, or Air France, and also better than United. There’s more legroom, and the crew is helpful and kind. The food is average but slightly better than most airlines. Overall, the crew is definitely better than on American Airlines, though not quite at the level of Virgin.

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

Seat is business could have been a lot cleaner, but space was nice and seat was comfortable

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

Everything you need to know for your flight from Heathrow to Shannon

Information on your arrival and departure airports

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