SNN - LHR

$63 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 11/20. 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 round-trip 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 round-trip flight deals from Shannon to Heathrow

Thu, Jan 15 - Tue, Jan 20
Aer Lingus Logo
8:05 pm - 9:25 pmSNN-LHR
1h 20mnonstop
Aer Lingus Logo
6:05 pm - 7:25 pmLHR-SNN
1h 20mnonstop
$126Aer Lingus
Find Deal
Wed, Nov 26 - Wed, Dec 3
Aer Lingus Logo
8:05 pm - 9:25 pmSNN-LHR
1h 20mnonstop
Aer Lingus Logo
10:00 am - 11:30 amLHR-SNN
1h 30mnonstop
$127Aer Lingus
Find Deal
Mon, Nov 17 - Thu, Nov 20
Aer Lingus Logo
8:05 pm - 9:25 pmSNN-LHR
1h 20mnonstop
Aer Lingus Logo
3:15 pm - 4:45 pmLHR-SNN
1h 30mnonstop
$128Aer Lingus
Find Deal
Tue, Dec 2 - Wed, Dec 3
Aer Lingus Logo
5:30 pm - 6:55 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
3:15 pm - 4:45 pmLHR-SNN
1h 30mnonstop
$129Aer Lingus
Find Deal
Fri, Nov 14 - Mon, Nov 17
Aer Lingus Logo
8:05 pm - 9:25 pmSNN-LHR
1h 20mnonstop
Aer Lingus Logo
6:05 pm - 7:25 pmLHR-SNN
1h 20mnonstop
$149Aer Lingus
Find Deal
Tue, Dec 2 - Wed, Dec 3
Aer Lingus Logo
7:50 am - 9:15 amSNN-LHR
1h 25mnonstop
Aer Lingus Logo
10:00 am - 11:30 amLHR-SNN
1h 30mnonstop
$150Aer Lingus
Find Deal
Tue, Dec 9 - Thu, Dec 11
Aer Lingus Logo
5:30 pm - 6:55 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
3:15 pm - 4:45 pmLHR-SNN
1h 30mnonstop
$151Aer Lingus
Find Deal
Tue, Dec 9 - Thu, Dec 11
Multiple Airlines Logo
5:50 am - 4:35 pmSNN-LHR
10h 45m1 stop
Multiple Airlines Logo
3:15 pm - 4:45 pmLHR-SNN
1h 30mnonstop
$202Multiple Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
British Airways Logo
5:30 pm - 6:55 pmSNN-LHR
1h 25mnonstop
British Airways Logo
6:05 pm - 7:25 pmLHR-SNN
1h 20mnonstop
$289British Airways
Find Deal
Thu, Nov 20 - Sun, Nov 23
British Airways Logo
5:30 pm - 6:55 pmSNN-LHR
1h 25mnonstop
British Airways Logo
10:00 am - 11:30 amLHR-SNN
1h 30mnonstop
$290British Airways
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
BA's 31-inch legroom in economy ensures comfort.
Aer Lingus A320 seats offer standard comfort at 17” wide.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Aer Lingus
Cheapest • from $126 (round-trip)
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 round-trip
$126
Typical prices: $113-$181
Aer Lingus
Thu 1/15Tue 1/20
SNN - LHR • Non-stop
Cheapest one-way
$63
Typical prices: $64-$85
Aer Lingus
Thu 11/20
SNN - LHR • 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 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.

How much is a round-trip flight from Shannon, Clare to London Heathrow Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Shannon, Clare to London Heathrow Airport departing in January.

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.

If you are looking for a flight deal from Shannon to London Heathrow Airport, look for departures on Fridays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from London Heathrow Airport, Friday is the cheapest day to fly and Monday is the most expensive.

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 $98 (return) on average. On the other hand, the most expensive months are August and October, where the average cost of round-trip tickets is $207 and $192 respectively.

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Expert advice

Expert advice for your flight from Shannon to Heathrow

 
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
American Airlines

American Airlines Main Cabin Extra offers early boarding and complimentary drinks.


AA's Basic Economy includes carry-on but no seat assignment until check-in.

Read more about American Airlinesby Harriet Baskas
British Airways

BA offers 31-inch legroom in economy, ensuring comfort on short-haul flights.


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

Read more about British Airwaysby Duncan Madden
Aer Lingus

Aer Lingus A320 seats are 17” wide with 30” pitch, offering standard comfort.


Aer Lingus offers AerSpace fare for more comfort with blocked middle seats.

Read more about Aer Lingusby Marisa Garcia
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
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

Good to know

Low seasonMay
Cheapest flight$63
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 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 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 $63 for a one-way ticket and $126 for a round-trip.

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

    A passport is required to fly from Shannon to London Heathrow Airport.

  • 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 nonstop 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 travelers 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 round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Shannon with another airline. Booking your flights between Shannon and LHR 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 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 $75 or less one-way and $660 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 1361 reviews
7.4Boarding
6.9Entertainment
8.0Crew
7.1Comfort
6.6Food
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

Information on your arrival and departure airports

Shannon (SNN)
Heathrow (LHR)

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