Cheap Flights from London Heathrow to Shannon

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Compare London Heathrow to Shannon flight deals

Find the cheapest month or even day of the year to fly to Shannon

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Flight deals from London Heathrow to Shannon

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Shannon Airport? If you want to travel next month, return fares start from $177. Find the lowest prices on one-way and return tickets right here.

Shannon.$176 per passenger.Departing Fri, 2 Oct, returning Sun, 4 Oct.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Fri, 2 Oct, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Sun, 4 Oct, arriving in London Heathrow.Price includes taxes and charges.From $176, select.

Shannon.$192 per passenger.Departing Thu, 29 Oct, returning Mon, 2 Nov.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Thu, 29 Oct, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Mon, 2 Nov, arriving in London Heathrow.Price includes taxes and charges.From $192, select.

Shannon.$198 per passenger.Departing Thu, 5 Nov, returning Sun, 8 Nov.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Thu, 5 Nov, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Sun, 8 Nov, arriving in London Heathrow.Price includes taxes and charges.From $198, select.

Shannon.$198 per passenger.Departing Mon, 28 Sep, returning Wed, 30 Sep.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Mon, 28 Sep, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Wed, 30 Sep, arriving in London Heathrow.Price includes taxes and charges.From $198, select.

Shannon.$198 per passenger.Departing Wed, 30 Sep, returning Thu, 1 Oct.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Wed, 30 Sep, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Thu, 1 Oct, arriving in London Heathrow.Price includes taxes and charges.From $198, select.

Shannon.$222 per passenger.Departing Tue, 1 Dec, returning Fri, 4 Dec.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 1 Dec, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Fri, 4 Dec, arriving in London Heathrow.Price includes taxes and charges.From $222, select.

Shannon.$229 per passenger.Departing Mon, 9 Nov, returning Fri, 11 Dec.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Mon, 9 Nov, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Fri, 11 Dec, arriving in London Heathrow.Price includes taxes and charges.From $229, select.

Shannon.$231 per passenger.Departing Tue, 19 Jan, returning Fri, 22 Jan.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 19 Jan, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Fri, 22 Jan, arriving in London Heathrow.Price includes taxes and charges.From $231, select.

Shannon.$244 per passenger.Departing Sat, 30 Jan, returning Tue, 2 Feb.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Sat, 30 Jan, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Tue, 2 Feb, arriving in London Heathrow.Price includes taxes and charges.From $244, select.

Shannon.$254 per passenger.Departing Tue, 9 Feb, returning Fri, 12 Feb.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 9 Feb, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Fri, 12 Feb, arriving in London Heathrow.Price includes taxes and charges.From $254, select.

Shannon.$265 per passenger.Departing Mon, 8 Mar, returning Wed, 10 Mar.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Mon, 8 Mar, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Wed, 10 Mar, arriving in London Heathrow.Price includes taxes and charges.From $265, select.

Shannon.$266 per passenger.Departing Fri, 26 Feb, returning Tue, 2 Mar.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Fri, 26 Feb, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Tue, 2 Mar, arriving in London Heathrow.Price includes taxes and charges.From $266, select.

Shannon.$290 per passenger.Departing Tue, 29 Dec, returning Sun, 3 Jan.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 29 Dec, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Sun, 3 Jan, arriving in London Heathrow.Price includes taxes and charges.From $290, select.

Shannon.$314 per passenger.Departing Tue, 18 May, returning Thu, 20 May.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 18 May, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Thu, 20 May, arriving in London Heathrow.Price includes taxes and charges.From $314, select.

Shannon.$315 per passenger.Departing Tue, 20 Apr, returning Thu, 22 Apr.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 20 Apr, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Thu, 22 Apr, arriving in London Heathrow.Price includes taxes and charges.From $315, select.

Shannon.$315 per passenger.Departing Wed, 28 Apr, returning Wed, 5 May.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Wed, 28 Apr, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Wed, 5 May, arriving in London Heathrow.Price includes taxes and charges.From $315, select.

Find the cheapest month to fly from London Heathrow to Shannon

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

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Direct flights from London Heathrow to Shannon

London Heathrow to Shannon: Alternative routes

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

London to Shannon: Flight information

The things to know before you go.

Cheapest flight found	$176
Cheapest month to fly	October
Average flight time	1 hr, 29 mins
Most popular airline	Aer Lingus
Average flights per week	100

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

How much are return flights from London Heathrow to Shannon?

The best price we found for a return flight from London Heathrow to Shannon is $177. 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 London Heathrow to Shannon?

1 hour and 29 minutes is the average flight time from London Heathrow to Shannon.

Which airlines fly direct from London Heathrow to Shannon?

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

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

As of September 2026, there are 100 flights per week flying from London Heathrow to Shannon.

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

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

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

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Shannon Airport on Friday, 2 October 2026.

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

Yes – the average flight time is 1 hour and 29 minutes.

How can I find the best flight deal to Shannon?

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 Shannon 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 Shannon?

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

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

Currently, Aer Lingus offers the cheapest flight tickets to Shannon.

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

Around 1 hour 30 minutes is how long you can expect to be travelling on a direct flight from London Heathrow Airport to Shannon Airport.
London and Shannon are both in the UTC+0 timezone. That means you won't have to change your watch on arrival.
Flights from LHR to SNN start from 09:50 — the first with Aer Lingus. The last departure is at 19:10 with Aer Lingus. In total, there are 20 weekly London Heathrow Airport to Shannon Airport flights.
To ensure you get on your LHR to SNN flight, allow plenty of time for things like baggage drop and finding your gate. Arriving two hours before international departures and one hour before domestic flights is the standard rule.
Flying during a peak month like July? Major public holidays and other popular seasons can lead to longer queues and delays at security. Play it safe and arrive up to four hours ahead of an international flight and two hours before a domestic departure.
Aer Lingus is your ticket to exploring Shannon (and maybe even some other exciting parts of Ireland!). Browse the direct flights from London Heathrow Airport to Shannon Airport offered by this popular carrier.
The airline with the highest booking volume on this route is Aer Lingus.
With 74.85% of its services landing on schedule, Aer Lingus is the most punctual carrier operating LHR to SNN flights.
Think about adding a stopover when booking your ticket from London Heathrow Airport to Shannon Airport. Just uncheck 'Direct flights only' to break up your trip, or perhaps see a new city along the way. Check out these options between LHR and SNN:
- Paris Charles de Gaulle Airport
- Manchester Airport
- Edinburgh Airport

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

Right now, $94 is the lowest price we've seen for a one-way London Heathrow Airport to Shannon Airport flight. The best price for a return plane ticket is $176. Bear in mind that fares may change due to demand at the time of booking.
To score cheap tickets from LHR to SNN, book ahead. Airlines tend to offer the most competitive fares when flights are first made available.
Plan your trip for May. That's the cheapest month for flights from London Heathrow Airport to Shannon Airport. If your travel dates are flexible, try out the 'Whole month' tool to find the cheapest price across every month.
You don't need to check back in every day to see if fares have dropped when you create a Price Alert. We'll let you know as soon as there's a change in price on cheap flights from LHR to SNN.
Tailor your trip with filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from London Heathrow Airport to Shannon Airport.

Handy information about London Heathrow Airport (LHR)

When it comes to the on-time performance of London Heathrow Airport, data shows 78% of flights arrive within the expected timeframe.
London Heathrow Airport is about 24 kilometres from central London. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 45 minutes or so to get there, depending on the traffic.
The journey when using public transport takes about 25 minutes.
Booked an early flight from London Heathrow Airport to Shannon Airport? Avoid the last-minute rush to the airport (and catch some extra z's) by picking one of these stays near LHR:

Arriving at Shannon Airport (SNN)

If you have a late London Heathrow Airport to Shannon Airport flight, nothing beats the convenience of staying near the terminal. Collect your bags from the carousel and then be resting shortly after at one of these hotels near SNN:
Go where the road takes you with a Shannon Airport rental car. Book your wheels from Easirent, Budget or Carhire and discover more of Shannon and beyond.
Reserving your vehicle from Shannon Airport around four weeks in advance increases your chances of getting a good deal.

When to fly to Shannon Airport (SNN)

The quietest month for a flight from London Heathrow Airport to Shannon Airport is February, while June is the most popular. Pick the ideal time to visit Shannon based on whether you prefer a bustling atmosphere or a more laid-back vibe.
The warmest month in Shannon is July, with the temperature ranging between 9ºC and 22ºC. Lock in your flights from London Heathrow Airport to Shannon Airport in this month if you enjoy this type of weather.
January sees average temperatures of between 0ºC and 9ºC. Search for cheap tickets from LHR to SNN sometime then if you want to travel in cooler conditions.

Explore more of Ireland

Shannon is easy to fall in love with, but there are so many other corners of Ireland just waiting to be explored. About 193 kilometres north-east of Shannon, a trip to Dublin will keep your itinerary busy. Start with popular sights like Guinness Storehouse, Trinity College Library and St. Patrick's Cathedral.
Around 97 kilometres south of Shannon, Cork is another favourite stop in Ireland. Experience this destination's highlights firsthand at Blarney Castle & Gardens, Blarney Castle House(Teach Caisleán na Blarnan) and Blarney Stone.