SNN - LHR

€52 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 10/10. 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

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
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

Tue, 23 Sep - Tue, 30 Sep
Aer Lingus Logo
16:55 - 18:20SNN-LHR
1h 25mdirect
Aer Lingus Logo
09:50 - 11:20LHR-SNN
1h 30mdirect
€107Aer Lingus
Find Deal
Thu, 2 Oct - Mon, 20 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
09:50 - 11:20LHR-SNN
1h 30mdirect
€109Aer Lingus
Find Deal
Mon, 8 Sep - Mon, 15 Sep
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€110Aer Lingus
Find Deal
Thu, 11 Sep - Mon, 15 Sep
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€111Aer Lingus
Find Deal
Fri, 10 Oct - Fri, 17 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
€115Aer Lingus
Find Deal
Sun, 28 Sep - Mon, 6 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€117Aer Lingus
Find Deal
Thu, 18 Sep - Wed, 24 Sep
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€118Aer Lingus
Find Deal
Sun, 28 Sep - Mon, 6 Oct
Aer Lingus Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
Aer Lingus Logo
19:10 - 20:35LHR-SNN
1h 25mdirect
€119Aer Lingus
Find Deal
Thu, 2 Oct - Mon, 20 Oct
 Logo
21:15 - 22:40SNN-LHR
1h 25mdirect
 Logo
21:40 - 12:35LHR-SNN
14h 55m1 stop
€168
Find Deal
Tue, 14 Oct - Wed, 15 Oct
 Logo
07:40 - 09:05SNN-LHR
1h 25mdirect
 Logo
14:40 - 16:10LHR-SNN
1h 30mdirect
€174
Find Deal
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.

Your flight ticket price will generally be cheaper if you fly to London Heathrow Airport on a Friday and more expensive on a Wednesday. On your return trip to Shannon, you should consider flying back on a Thursday, and avoid Fridays for better deals.

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 €93 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is €184 and €163 respectively.

Good to know

Low seasonMay
Cheapest flight€52
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 8% 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 €61 for a one-way ticket and €125 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.

  • Which airline alliances offer flights from Shannon to London Heathrow Airport?

    oneworld, and Star Alliance are the airline alliances operating flights between Shannon and London Heathrow Airport, with oneworld being the most commonly used for this 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 €162 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, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Thursday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Friday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Saturday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Sunday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

See more direct flights

Direct returns

London Heathrow to Shannon

Monday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Thursday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Friday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Saturday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

Sunday

Aer Lingus, Air Canada, American Airlines, +2 more

Aer Lingus, Air Canada, +3 more

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 1238 reviews
6.9Entertainment
6.5Food
7.3Boarding
7.1Comfort
8.0Crew
Airline reviews

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

2.0 MediocreAnonymous, Aug 2025DUB - SEA
Read more Aer Lingus reviews

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

Not JetBlue's fault but Aer Lingus never explained how to transfer to JetBlue.

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Not satisfying due to loss Luguage for 4days. Damage Luguage that had no way to fill up a report for and me as a client to spend more money and time to replace it. Thank you for soliciting my opinion, but it was unfortunately a very disappointing experience. Stephanie Zvi

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

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