Cheap Flights from Shannon to London Heathrow

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Compare Shannon to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

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Flight deals from Shannon to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Shannon Airport to London Heathrow Airport? If you want to travel next month, return fares start from $185. Find the lowest prices on one-way and return tickets right here.

London.$185 per passenger.Departing Thu, 1 Oct, returning Sun, 4 Oct.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Thu, 1 Oct, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Sun, 4 Oct, arriving in Shannon.Price includes taxes and charges.From $185, select.

London.$188 per passenger.Departing Sat, 17 Oct, returning Sat, 7 Nov.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Sat, 17 Oct, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Sat, 7 Nov, arriving in Shannon.Price includes taxes and charges.From $188, select.

London.$192 per passenger.Departing Mon, 28 Sep, returning Thu, 1 Oct.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Mon, 28 Sep, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Thu, 1 Oct, arriving in Shannon.Price includes taxes and charges.From $192, select.

London.$192 per passenger.Departing Mon, 28 Sep, returning Wed, 30 Sep.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Mon, 28 Sep, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Wed, 30 Sep, arriving in Shannon.Price includes taxes and charges.From $192, select.

London.$192 per passenger.Departing Wed, 4 Nov, returning Thu, 5 Nov.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Wed, 4 Nov, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Thu, 5 Nov, arriving in Shannon.Price includes taxes and charges.From $192, select.

London.$208 per passenger.Departing Fri, 4 Dec, returning Sun, 6 Dec.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Fri, 4 Dec, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Sun, 6 Dec, arriving in Shannon.Price includes taxes and charges.From $208, select.

London.$219 per passenger.Departing Mon, 30 Nov, returning Tue, 1 Dec.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Mon, 30 Nov, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Tue, 1 Dec, arriving in Shannon.Price includes taxes and charges.From $219, select.

London.$228 per passenger.Departing Mon, 11 Jan, returning Wed, 13 Jan.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Mon, 11 Jan, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Wed, 13 Jan, arriving in Shannon.Price includes taxes and charges.From $228, select.

London.$242 per passenger.Departing Wed, 30 Dec, returning Sat, 2 Jan.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Wed, 30 Dec, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Sat, 2 Jan, arriving in Shannon.Price includes taxes and charges.From $242, select.

London.$245 per passenger.Departing Thu, 17 Sep, returning Thu, 12 Nov.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Thu, 17 Sep, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Thu, 12 Nov, arriving in Shannon.Price includes taxes and charges.From $245, select.

London.$263 per passenger.Departing Fri, 5 Mar, returning Tue, 9 Mar.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Fri, 5 Mar, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Tue, 9 Mar, arriving in Shannon.Price includes taxes and charges.From $263, select.

London.$265 per passenger.Departing Mon, 8 Feb, returning Fri, 19 Feb.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Mon, 8 Feb, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Fri, 19 Feb, arriving in Shannon.Price includes taxes and charges.From $265, select.

London.$269 per passenger.Departing Thu, 28 Jan, returning Mon, 1 Feb.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Thu, 28 Jan, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Mon, 1 Feb, arriving in Shannon.Price includes taxes and charges.From $269, select.

London.$292 per passenger.Departing Sun, 28 Feb, returning Mon, 1 Mar.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Sun, 28 Feb, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Mon, 1 Mar, arriving in Shannon.Price includes taxes and charges.From $292, select.

London.$313 per passenger.Departing Fri, 23 Apr, returning Tue, 27 Apr.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Fri, 23 Apr, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Tue, 27 Apr, arriving in Shannon.Price includes taxes and charges.From $313, select.

London.$325 per passenger.Departing Fri, 7 May, returning Sun, 9 May.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from Shannon on Fri, 7 May, arriving in London Heathrow.Inbound direct flight with Aer Lingus departs from London Heathrow on Sun, 9 May, arriving in Shannon.Price includes taxes and charges.From $325, select.

Find the cheapest month to fly from Shannon to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Shannon to London Heathrow flights are currently cheapest in October.

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Direct flights from Shannon to London Heathrow

Shannon to London Heathrow: Alternative routes

Compare routes from Shannon to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Shannon to London: Flight information

The things to know before you go.

Cheapest flight found	$185
Cheapest month to fly	October
Average flight time	1 hr, 27 mins
Most popular airline	Aer Lingus
Average flights per week	89

Finding cheap flights from Shannon to London Heathrow: Frequently asked questions

How much are return flights from Shannon to London Heathrow?

The best price we found for a return flight from Shannon to London Heathrow is $185. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Shannon to London Heathrow?

1 hour and 27 minutes is the average flight time from Shannon to London Heathrow.

Which airlines fly direct from Shannon to London Heathrow?

Aer Lingus, Qatar Airways and British Airways fly direct from Shannon to London Heathrow.

How many flights are there a week from Shannon to London Heathrow?

As of September 2026, there are 89 flights per week flying from Shannon to London Heathrow.

When is the cheapest time to fly from Shannon to London Heathrow?

The cheapest month to fly from Shannon to London Heathrow is usually October.

Which upcoming date is cheapest to fly from Shannon Airport to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Shannon Airport to London Heathrow Airport on Thursday, 1 October 2026.

Can I get a direct flight from Shannon Airport to London Heathrow Airport?

Yes – the average flight time is 1 hour and 27 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Shannon Airport to London Heathrow with?

Currently, Aer Lingus offers the cheapest flight tickets to London Heathrow.

Travelling from Shannon Airport (SNN) to London Heathrow Airport (LHR): what you need to know

Around 1 hour 25 minutes is how long you can expect to be in the air on a direct flight from Shannon Airport to London Heathrow Airport.
Shannon and London follow the same timezone, UTC+0.
Each week, there are 20 Shannon Airport to London Heathrow Airport flights. To be on board as early as possible, take the 07:40 Aer Lingus flight. If you'd rather make the most of your day before you fly, the latest flight is at 21:15 with Aer Lingus.
Get to the airport on time so you don't miss your SNN to LHR flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid a last-minute sprint to the gate.
During popular months like June, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of an international flight whenever you're travelling during a high season in general.
Aer Lingus offers direct flights from Shannon Airport to London Heathrow Airport. Book with this popular carrier, then get ready to discover the sights in London — and maybe even more of the United Kingdom if your schedule allows.
Aer Lingus is the airline most travellers choose to fly with on this route.
The most punctual carrier operating SNN to LHR flights is Aer Lingus. Its services arrive as scheduled 70.06% of the time.
Think about adding a stopover when booking your ticket from Shannon Airport to London Heathrow Airport. Just uncheck 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here are some options between SNN and LHR:
- Paris Charles de Gaulle Airport
- Manchester Airport
- Edinburgh Airport

How to find the cheapest flights from Shannon Airport (SNN) to London Heathrow Airport (LHR)

The lowest price we've seen for a one-way Shannon Airport to London Heathrow Airport flight is $77. A return ticket right now is $185. Depending on the availability when you book, these fares could change.
To find cheap tickets from SNN to LHR, book as early as you can. Airlines typically offer their most competitively priced fares when flights are first released.
May is the cheapest month for flights from Shannon Airport to London Heathrow Airport. If you're looking to fly at a different time of year, the 'Whole month' tool will show you the lowest airfares for every month.
There's no need to check back in every day to see if fares have gone down when you set up a Price Alert. We'll send you an update the moment there's a change in price on cheap flights from SNN to LHR.
Find the ideal flight for you with the help of the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Shannon Airport to London Heathrow Airport, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and number of stops.

Handy information about Shannon Airport (SNN)

84% of flights leaving Shannon Airport arrive at their destination on time. With its strong on-time stats, you're unlikely to face delays when jetting out of SNN.
Shannon Airport is about 3 kilometres from central Shannon. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 5 minutes or so to arrive, depending on the traffic.
Planning to catch public transport? You can expect a journey time of around 15 minutes.
Get your holiday off to a stress-free start by staying near SNN. Whether you're taking an early flight from Shannon Airport to London Heathrow Airport or just don't want to be rushed, these hotels are perfect:

Arriving at London Heathrow Airport (LHR)

The last thing you want is a lengthy journey to your hotel if you're arriving on a late Shannon Airport to London Heathrow Airport flight. Reserve one of these accommodation options near LHR instead:
Get on the fast track to adventure by picking up a London Heathrow Airport rental car. Grab your wheels from Surprice, U-Save or Green Motion and experience the lesser-explored corners of London and beyond.
Lock in the best rate by reserving your vehicle from London Heathrow Airport around one week in advance of your trip.

When to fly to London Heathrow Airport (LHR)

The quietest month for a flight from Shannon Airport to London Heathrow Airport is March, while July is the most popular. Choose the best time to go to London based on whether you prefer a more fast-paced or easygoing experience.
When reserving your flight from Shannon Airport to London Heathrow Airport, think about the type of weather you enjoy. July is the warmest month in London, with the temperature ranging from 11ºC to 26ºC.
January has average temperatures of between 0ºC and 9ºC. Search for cheap tickets from SNN to LHR around that time if you want to travel when it's cooler.

Explore more of the United Kingdom

You've seen London, now it's time to explore more of the United Kingdom. Travel around 257 kilometres north-west to Manchester to tick off its popular sights. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, you've got a jam-packed schedule ahead.
Around 161 kilometres north-west of London, Birmingham is another favourite stop in the United Kingdom. Experience major highlights starting with Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.