SNN - LHR

€54 Find Cheap Flights from Shannon to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Shannon to Heathrow departing on 20/11. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

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

Cheap Flights from Shannon to Heathrow (SNN-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Shannon to Heathrow 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 Shannon to Heathrow

Tue, 25 Nov - Tue, 2 Dec
Aer Lingus Logo
17:30 - 18:55SNN-LHR
1h 25mdirect
Aer Lingus Logo
10:00 - 11:30LHR-SNN
1h 30mdirect
€106Aer Lingus
Find Deal
Thu, 15 Jan - Tue, 20 Jan
Aer Lingus Logo
20:05 - 21:25SNN-LHR
1h 20mdirect
Aer Lingus Logo
18:05 - 19:25LHR-SNN
1h 20mdirect
€108Aer Lingus
Find Deal
Sat, 22 Nov - Sat, 29 Nov
Aer Lingus Logo
17:25 - 18:50SNN-LHR
1h 25mdirect
Aer Lingus Logo
14:15 - 15:45LHR-SNN
1h 30mdirect
€109Aer Lingus
Find Deal
Fri, 14 Nov - Mon, 17 Nov
Aer Lingus Logo
20:05 - 21:25SNN-LHR
1h 20mdirect
Aer Lingus Logo
10:00 - 11:30LHR-SNN
1h 30mdirect
€110Aer Lingus
Find Deal
Sat, 22 Nov - Sun, 23 Nov
Aer Lingus Logo
17:25 - 18:50SNN-LHR
1h 25mdirect
Aer Lingus Logo
10:00 - 11:30LHR-SNN
1h 30mdirect
€112Aer Lingus
Find Deal
Fri, 21 Nov - Sun, 23 Nov
Aer Lingus Logo
20:05 - 21:25SNN-LHR
1h 20mdirect
Aer Lingus Logo
10:00 - 11:30LHR-SNN
1h 30mdirect
€115Aer Lingus
Find Deal
Fri, 7 Nov - Sun, 9 Nov
Aer Lingus Logo
20:05 - 21:25SNN-LHR
1h 20mdirect
Aer Lingus Logo
10:00 - 11:30LHR-SNN
1h 30mdirect
€116Aer Lingus
Find Deal
Fri, 14 Nov - Tue, 18 Nov
Aer Lingus Logo
20:05 - 21:25SNN-LHR
1h 20mdirect
Aer Lingus Logo
18:05 - 19:25LHR-SNN
1h 20mdirect
€118Aer Lingus
Find Deal
Tue, 9 Dec - Wed, 10 Dec
Multiple Airlines Logo
05:50 - 16:35SNN-LHR
10h 45m1 stop
Multiple Airlines Logo
18:05 - 19:25LHR-SNN
1h 20mdirect
€144Multiple Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
British Airways Logo
17:30 - 18:55SNN-LHR
1h 25mdirect
British Airways Logo
18:05 - 19:25LHR-SNN
1h 20mdirect
€248British Airways
Find Deal

Everything you should know

Top airlines
Aer Lingus
Cheapest • from €106 (return)
Aer Lingus
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 41% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
€106
Overall average: €145
Aer Lingus
Tue 25/11Tue 2/12
SNN - LHR • Direct
Cheapest one-way flight
€54
Typical prices: €55-€73
Aer Lingus
Thu 20/11
SNN - LHR • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Booking Insights

KAYAK's insights & trends for Shannon to Heathrow flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Shannon to London Heathrow Airport, 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 Shannon to London Heathrow Airport is February, where tickets cost €84 (return) on average. On the other hand, the most expensive months are August and October, where the average cost of round-trip tickets is €178 and €165 respectively.

Good to know

Low seasonMay
Cheapest flight€54
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Shannon to London Heathrow Airport

When to book flights from Shannon to Heathrow

Are your dates flexible? Find out the best times to travel from Shannon to Heathrow 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 Shannon to London Heathrow Airport flights

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

    In the last 3 days, the lowest price for a flight from Shannon to London Heathrow Airport was €54 for a one-way ticket and €106 for a return.

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

    On your way to London Heathrow Airport, you’ll fly out from Shannon. You’ll be landing at London Heathrow.

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

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

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

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

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

    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 Shannon to London Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Shannon 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 Shannon to London Heathrow Airport?

    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 London Heathrow Airport with an airline and back to Shannon with another airline.

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

    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 London Heathrow Airport from Shannon 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 Shannon to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for €103 or less one-way and €195 or less round-trip.

Prefer to fly direct from Shannon to London Heathrow?

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

Direct departures

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

Direct returns

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

Reviews of the top airline flying from Shannon to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Shannon to London. 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 Shannon to Heathrow? 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 1361 reviews
6.6Food
7.1Comfort
6.9Entertainment
8.0Crew
7.4Boarding
Airline reviews

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

10.0 ExcellentAnisha, Oct 2025DUB - EWR
Read more Aer Lingus reviews

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

The seats needs to be comfortables, at least please add more padding to the seats.

Incredible service. Incredible entertainment. I felt like they just kept serving us something new avery hour. My wife and I both had a joyous flight.

They out me in the baby row so I was surrounded by toddlers, they also did not send my luggage and was not able to book my connecting flight

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

Dinner was fabulous. Would have enjoyed a wine with it. None offered... for sale??? Breakfast was disappointing but adequate amount of food.

Excellent flight and crew. Boarding at Dublin Airport was a very difficult trying to find the right gate.

Dublin airport is big and US Customs and Immigration screening officers are is part of the process there. This eliminates screening upon arrival to US, however should be taken into consideration when playing your transfer. After all, pleasant experience enhanced by draft Guinness and Irish coffee at the buffet area near the gate. We loved boarding by the row, back of the airplane first.

There was a mixup with our tickets. They said they did not receive payment for them but yet we had seat assignments. We had to purchase last-minute tickets which cost us three times as much. that’s why they got a rated of a one.

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

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