SNN - LHR

€43 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 20/5. 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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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
€99
Typical prices: €134-€159
Aer Lingus
Thu 2/4Sun 5/4
SNN - LHR • Direct
Cheapest one-way flight
€43
Typical prices: €57-€111
Aer Lingus
Wed 20/5
SNN - LHR • Direct
Direct flights
You can fly direct with Aer Lingus. Average duration is 1h 28m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
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
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

Thu, 2 Apr - Sun, 5 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€99Aer Lingus
Fri, 26 Jun - Tue, 30 Jun
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€106Aer Lingus
Sun, 12 Apr - Sun, 19 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
14:35 - 16:05
LHR
-
SNN
1h 30mdirect
€109Aer Lingus
Sun, 12 Apr - Sun, 19 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€110Aer Lingus
Mon, 20 Apr - Tue, 21 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10
LHR
-
SNN
1h 30mdirect
€111Aer Lingus
Thu, 2 Apr - Sun, 5 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€112Aer Lingus
Thu, 23 Apr - Sun, 26 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€113Aer Lingus
Thu, 7 May - Sun, 10 May
Aer Lingus Logo
07:30 - 09:05
SNN
-
LHR
1h 35mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€114Aer Lingus
Thu, 16 Apr - Wed, 22 Apr
Aer Lingus Logo
16:50 - 18:20
SNN
-
LHR
1h 30mdirect
Aer Lingus Logo
14:40 - 16:10
LHR
-
SNN
1h 30mdirect
€115Aer Lingus
Mon, 30 Mar - Wed, 8 Apr
Aer Lingus Logo
21:15 - 22:40
SNN
-
LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35
LHR
-
SNN
1h 25mdirect
€116Aer 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 return flight from Shannon, Clare to London Heathrow Airport?

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

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 January, where tickets cost €132 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is €186 and €181 respectively.

Good to know

Low seasonMay
Cheapest flight€43
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 9% 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 €43 for a one-way ticket and €99 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 €58 or less one-way and €153 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 1477 reviews
8.1Crew
7.0Entertainment
6.6Food
7.4Boarding
7.1Comfort
Airline reviews

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

2.0 MediocreAnonymous, Mar 2026
BHD - MAN
Read more Aer Lingus reviews

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

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!

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

Information on your arrival and departure airports