LHR - SNN

€52 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 17/9. 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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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 return 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 return flight deals from Heathrow to Shannon

mar, 19 ago - mar, 26 ago
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
€105Aer Lingus
Find Deal
mar, 2 set - gio, 11 set
Aer Lingus Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
Aer Lingus Logo
07:40 - 09:05SNN-LHR
1h 25mdirect
€108Aer Lingus
Find Deal
lun, 25 ago - lun, 1 set
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
Aer Lingus Logo
07:40 - 09:05SNN-LHR
1h 25mdirect
€109Aer Lingus
Find Deal
mer, 27 ago - mer, 3 set
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
€110Aer Lingus
Find Deal
lun, 8 set - ven, 12 set
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
€110Aer Lingus
Find Deal
mar, 2 set - dom, 14 set
Aer Lingus Logo
09:50 - 11:20LHR-SNN
1h 30mdirect
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
€112Aer Lingus
Find Deal
mar, 2 set - dom, 14 set
Aer Lingus Logo
09:50 - 11:20LHR-SNN
1h 30mdirect
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
€116Aer Lingus
Find Deal
mer, 27 ago - mer, 3 set
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
Aer Lingus Logo
07:40 - 09:05SNN-LHR
1h 25mdirect
€116Aer Lingus
Find Deal
mar, 19 ago - mer, 27 ago
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
€117Aer Lingus
Find Deal
ven, 12 dic - mer, 14 gen
 Logo
07:10 - 23:35LHR-SNN
16h 25m1 stop
 Logo
20:05 - 21:25SNN-LHR
1h 20mdirect
€170
Find Deal
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.

If your flying dates are flexible, you should consider flying to Shannon on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from London Heathrow Airport to Shannon. For your return ticket, we recommend flying on a Friday and avoiding Wednesdays for the best 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 €100 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is €191 and €175 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 3 weeks before departure, which saves you about 17% 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€52
Best time to beat the crowds (34% less expensive on average)
Most popular time to fly (13% more expensive on average)
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 return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 €60 for a one-way ticket and €121 for a return.

  • 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 direct 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 travellers 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 return ticket. You could then fly to Shannon with an airline and back to London Heathrow Airport with another airline.

  • 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 €91 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 to Shannon?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop 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, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Thursday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Friday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Saturday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Sunday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

See more direct flights

Direct returns

Shannon to London Heathrow

Monday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Thursday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Friday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Saturday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Sunday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

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.
7.1
Aer LingusOverall score based on 1191 reviews
8.0Crew
7.3Boarding
7.1Comfort
6.8Entertainment
6.4Food
Airline reviews

We booked a flight from FCO(Rome) with a stop over at DUB(Dublin) going to JFK. Boarding from Rome was kind of chaotic since the airport I guess is very small and we needed to shuttle to the airplane. The gate agent just let everyone and anyone go without using the sections so that took a lot longer than usual boarding. From drinking to JFk boarding was good and organized. Amazingly the flights was very smooth sailing and we’ve flown American big airplane to small companies before. The aircraft’s itself is on the older side, can’t complain tho because the plane ride wa smooth. For a 3 hour plane ride, nothing was complimentary. But for the longer leg of the plane complimentary snacks, meals and drinks were provided which was great. The food wasn’t bad either. I would fly with them again, great price and good service.

8.0 ExcellentGene, Jul 2025FCO - DUB
Read more Aer Lingus reviews

We booked a flight from FCO(Rome) with a stop over at DUB(Dublin) going to JFK. Boarding from Rome was kind of chaotic since the airport I guess is very small and we needed to shuttle to the airplane. The gate agent just let everyone and anyone go without using the sections so that took a lot longer than usual boarding. From drinking to JFk boarding was good and organized. Amazingly the flights was very smooth sailing and we’ve flown American big airplane to small companies before. The aircraft’s itself is on the older side, can’t complain tho because the plane ride wa smooth. For a 3 hour plane ride, nothing was complimentary. But for the longer leg of the plane complimentary snacks, meals and drinks were provided which was great. The food wasn’t bad either. I would fly with them again, great price and good service.

Comfortable trip , flight attendants professional as always. Only complaint was the food, We fly Aer Lingus frequently, this was the first time the quality of the meal was poor.

Everything went well. I made my connection which is always a concern.

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

When I booked the flight, I wasn't aware that this was a "no frills" flight. No wifi, no reclining seat, no complimentary soft drinks.

Charging for coffee on a business class fare??? And to not even mention it? Inexcusable. Boarding and disembarking was pathetic. Could not use a jetway on either end. Had to use stairs and walk across tarmac at origination and use stairs and be bussed to terminal at destination.

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

The Nice airport was a horrible boarding experience. I have never experienced the kind of compressed mob (in the B12-B17 gate area) of people all unclear what was happening and no airport staff to assist. There was no signage and 1000’s of people waiting for any info for 2 hours.

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