SNN - LHR

$60 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 9/15. 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

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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Flights 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

Fri, Sep 12 - Fri, Sep 19
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$123Aer Lingus
Find Deal
Wed, Sep 24 - Wed, Sep 24
Aer Lingus Logo
7:40 am - 9:05 amSNN-LHR
1h 25mnonstop
Aer Lingus Logo
2:40 pm - 4:10 pmLHR-SNN
1h 30mnonstop
$124Aer Lingus
Find Deal
Thu, Aug 21 - Wed, Sep 3
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$129Aer Lingus
Find Deal
Wed, Aug 20 - Tue, Sep 2
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$134Aer Lingus
Find Deal
Wed, Aug 27 - Tue, Sep 9
Aer Lingus Logo
4:55 pm - 6:20 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$155Aer Lingus
Find Deal
Wed, Oct 8 - Mon, Oct 20
Aer Lingus Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
Aer Lingus Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$163Aer Lingus
Find Deal
Fri, Nov 14 - Mon, Nov 17
 Logo
8:05 pm - 9:25 pmSNN-LHR
1h 20mnonstop
 Logo
7:05 pm - 10:50 pmLHR-SNN
3h 45m1 stop
Mon, Sep 1 - Fri, Sep 5
British Airways Logo
7:40 am - 9:05 amSNN-LHR
1h 25mnonstop
British Airways Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$287British Airways
Find Deal
Tue, Aug 12 - Fri, Aug 15
British Airways Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
British Airways Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$290British Airways
Find Deal
Tue, Aug 12 - Fri, Aug 15
British Airways Logo
9:15 pm - 10:40 pmSNN-LHR
1h 25mnonstop
British Airways Logo
7:10 pm - 8:35 pmLHR-SNN
1h 25mnonstop
$292British Airways
Find Deal
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.

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.

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.

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
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.

If you are looking for a flight deal from Shannon to London Heathrow Airport, look for departures on Fridays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from London Heathrow Airport, Friday is the cheapest day to fly and Tuesday 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 July and August, where the average cost of round-trip tickets is $225 and $198 respectively.

Good to know

Low seasonMay
Cheapest flight$60
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 7% 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 $60 for a one-way ticket and $123 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.

  • 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 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 $124 or less one-way and $646 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, 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.
7.1
Aer LingusOverall score based on 1191 reviews
8.0Crew
7.3Boarding
7.1Comfort
6.8Entertainment
6.4Food
Airline reviews

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.)

8.0 ExcellentAnonymous, Jul 2025ORD - DUB
Read more Aer Lingus reviews

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.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

No entertained. food and beverages were not complimentary. they lost my checked luggage which made my 10 day vacation unpleasant.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

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

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