SNN - LHR

£47 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 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, 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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Everything you should know

Cheapest return fare
£92
Overall average: £92
Aer Lingus
Wed 7/1Wed 14/1
SNN - LHR • Direct
Cheapest one-way flight
£47
Typical prices: £42-£147
Aer Lingus
Sat 10/1
SNN - LHR • Direct
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
BA's Euro Traveller fares include a cabin bag.
Aer Lingus has friendly cabin crew for a pleasant flight.
Expert advice
Expert advice
Expert advice
Expert advice
When to travel
February
Cheapest • 36% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Expert advice
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

Wed, 7 Jan - Wed, 14 Jan
Aer Lingus Logo
17:30 - 18:55
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
18:05 - 19:25
LHR
-
SNN
1h 20mdirect
£92Aer Lingus
Thu, 8 Jan - Thu, 15 Jan
Aer Lingus Logo
20:05 - 21:25
SNN
-
LHR
1h 20mdirect
Aer Lingus Logo
18:05 - 19:25
LHR
-
SNN
1h 20mdirect
£93Aer Lingus
Sat, 10 Jan - Wed, 14 Jan
Aer Lingus Logo
17:25 - 18:50
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
15:15 - 16:45
LHR
-
SNN
1h 30mdirect
£94Aer Lingus
Thu, 8 Jan - Sun, 11 Jan
Aer Lingus Logo
07:50 - 09:15
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
15:15 - 16:45
LHR
-
SNN
1h 30mdirect
£95Aer Lingus
Thu, 8 Jan - Wed, 14 Jan
Aer Lingus Logo
20:05 - 21:25
SNN
-
LHR
1h 20mdirect
Aer Lingus Logo
10:00 - 11:30
LHR
-
SNN
1h 30mdirect
£96Aer Lingus
Fri, 23 Jan - Mon, 26 Jan
Aer Lingus Logo
20:05 - 21:25
SNN
-
LHR
1h 20mdirect
Aer Lingus Logo
18:05 - 19:25
LHR
-
SNN
1h 20mdirect
£96Aer Lingus
Wed, 31 Dec - Sun, 4 Jan
Aer Lingus Logo
20:05 - 21:25
SNN
-
LHR
1h 20mdirect
Aer Lingus Logo
18:05 - 19:25
LHR
-
SNN
1h 20mdirect
£101Aer Lingus
Sun, 25 Jan - Wed, 28 Jan
Aer Lingus Logo
20:05 - 21:25
SNN
-
LHR
1h 20mdirect
Aer Lingus Logo
10:00 - 11:30
LHR
-
SNN
1h 30mdirect
£102Aer Lingus
Sat, 24 Jan - Sat, 31 Jan
Aer Lingus Logo
07:50 - 09:15
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
14:15 - 15:45
LHR
-
SNN
1h 30mdirect
£109Aer Lingus
Sat, 24 Jan - Sat, 31 Jan
Aer Lingus Logo
07:50 - 09:15
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
14:15 - 15:45
LHR
-
SNN
1h 30mdirect
£110Aer Lingus
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’s the cheapest day of the week to fly from Shannon to London Heathrow Airport?

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

When flying from Shannon to London Heathrow Airport, you should consider leaving on a Thursday and avoid Wednesdays if you are looking for the best rates. For your return to Shannon, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

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 £81 (return) on average. On the other hand, the most expensive months are August and October, where the average cost of round-trip tickets is £155 and £149 respectively.

Find deals
Expert advice

Expert advice for your flight from Shannon to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
British Airways

BA's Euro Traveller fares include a cabin bag, avoiding surprise fees.


BA offers ergonomic leather seats with bearable legroom on short-haul flights.

Read more about British AirwaysBy Duncan Madden
Aer Lingus

Aer Lingus offers friendly cabin crew enhancing the short-haul flight experience.


Aer Lingus AerSpace fare provides front-row seating with extra comfort on short-haul flights.

Read more about Aer LingusBy Marisa Garcia
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, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Read more

Good to know - Cheap tickets from Shannon to London Heathrow Airport

Low seasonOctober
Cheapest flight£47
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 36% 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 £47 for a one-way ticket and £92 for a return.

  • 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 from London Heathrow Airport to Shannon? 25% of our users found flights on this route for £55 or less one-way and £159 or less round-trip.

Prefer to fly direct from Shannon to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct 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 1394 reviews
7.0Entertainment
7.1Comfort
7.4Boarding
8.0Crew
6.6Food
Airline reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

10.0 ExcellentPAULINA, Nov 2025
DUB - LAS
Read more Aer Lingus reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

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.

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

Information on your arrival and departure airports

Shannon (SNN)
Heathrow (LHR)