SNN - LHR

$64 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 2/15. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$125
Typical prices: $119-$172
Aer Lingus
Mon 2/23Mon 3/2
SNN - LHR • Non-stop
Cheapest one-way
$64
Typical prices: $67-$174
Aer Lingus
Sun 2/15
SNN - LHR • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
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 $125 (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 • 37% 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 100s 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 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

Mon, Feb 23 - Mon, Mar 2
Aer Lingus Logo
5:30 pm - 6:55 pm
SNN
-
LHR
1h 25mnonstop
Aer Lingus Logo
10:00 am - 11:30 am
LHR
-
SNN
1h 30mnonstop
$125Aer Lingus
Tue, Feb 24 - Tue, Mar 3
Aer Lingus Logo
7:50 am - 9:15 am
SNN
-
LHR
1h 25mnonstop
Aer Lingus Logo
3:15 pm - 4:45 pm
LHR
-
SNN
1h 30mnonstop
$126Aer Lingus
Sun, Feb 22 - Sun, Mar 1
Aer Lingus Logo
8:05 pm - 9:25 pm
SNN
-
LHR
1h 20mnonstop
Aer Lingus Logo
10:00 am - 11:30 am
LHR
-
SNN
1h 30mnonstop
$143Aer Lingus
Tue, Apr 7 - Sat, Apr 11
Aer Lingus Logo
7:30 am - 9:05 am
SNN
-
LHR
1h 35mnonstop
Aer Lingus Logo
9:50 am - 11:20 am
LHR
-
SNN
1h 30mnonstop
$167Aer Lingus
Wed, Apr 1 - Sat, Apr 4
Aer Lingus Logo
9:15 pm - 10:40 pm
SNN
-
LHR
1h 25mnonstop
Aer Lingus Logo
9:50 am - 11:20 am
LHR
-
SNN
1h 30mnonstop
$168Aer Lingus
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
5:50 am - 4:35 pm
SNN
-
LHR
10h 45m
1 stop
Multiple Airlines Logo
3:15 pm - 4:45 pm
LHR
-
SNN
1h 30mnonstop
$172Multiple Airlines
Thu, May 21 - Mon, May 25
Aer Lingus Logo
9:15 pm - 10:40 pm
SNN
-
LHR
1h 25mnonstop
Aer Lingus Logo
2:40 pm - 4:10 pm
LHR
-
SNN
1h 30mnonstop
$178Aer Lingus
Mon, May 18 - Mon, May 25
Aer Lingus Logo
9:15 pm - 10:40 pm
SNN
-
LHR
1h 25mnonstop
Aer Lingus Logo
9:50 am - 11:20 am
LHR
-
SNN
1h 30mnonstop
$189Aer Lingus
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
7:50 am - 9:15 am
SNN
-
LHR
1h 25mnonstop
Multiple Airlines Logo
8:50 pm - 12:10 pm
LHR
-
SNN
15h 20m
2 stops
$192Multiple Airlines
Fri, May 1 - Fri, May 8
Aer Lingus Logo
9:15 pm - 10:40 pm
SNN
-
LHR
1h 25mnonstop
Aer Lingus Logo
7:10 pm - 8:35 pm
LHR
-
SNN
1h 25mnonstop
$193Aer 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.

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 February.

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 Sunday 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 $108 (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 $200 respectively.

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.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

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.

Duncan Madden

Duncan Madden

Expert on British Airways

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.

Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

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.

Good to know

Low seasonOctober
Cheapest flight$64
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 38% 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 $64 for a one-way ticket and $125 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 $65 or less one-way and $714 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 1442 reviews
7.4Boarding
8.0Crew
7.1Comfort
6.6Food
6.9Entertainment
Airline reviews

One of the best flight experiences I've have had in along time. Would fly with them again.

10.0 ExcellentDoug, Jan 2026
DUB - MCO
Read more Aer Lingus reviews

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

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.

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

Information on your arrival and departure airports