£92 Cheap Flights from London Heathrow (LHR) to Shannon (SNN)

Q: 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 £92. 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.

Q: 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.

Q: Which airlines fly direct from London Heathrow to Shannon?

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

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

As of July 2025, there are 99 flights per week flying from London Heathrow to Shannon.

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

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

Q: 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 Wednesday, 17 September 2025 .

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

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

Q: 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.

Q: 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.

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

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

Compare London Heathrow to Shannon flight deals

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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 to Shannon? Find the lowest prices on one-way and return tickets right here.

Shannon.£92 per passenger.Departing Wed, 17 Sep, returning Sat, 27 Sep.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Wed, 17 Sep, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Sat, 27 Sep, arriving in London Heathrow.Price includes taxes and charges.From £92, select.

Shannon.£95 per passenger.Departing Wed, 23 Jul, returning Wed, 30 Jul.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Wed, 23 Jul, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Wed, 30 Jul, arriving in London Heathrow.Price includes taxes and charges.From £95, select.

Shannon.£101 per passenger.Departing Tue, 29 Jul, returning Thu, 7 Aug.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 29 Jul, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Thu, 7 Aug, arriving in London Heathrow.Price includes taxes and charges.From £101, select.

Shannon.£102 per passenger.Departing Mon, 29 Sep, returning Sun, 5 Oct.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Mon, 29 Sep, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Sun, 5 Oct, arriving in London Heathrow.Price includes taxes and charges.From £102, select.

Shannon.£107 per passenger.Departing Tue, 5 Aug, returning Tue, 19 Aug.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Tue, 5 Aug, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Tue, 19 Aug, arriving in London Heathrow.Price includes taxes and charges.From £107, select.

Shannon.£110 per passenger.Departing Wed, 27 Aug, returning Tue, 2 Sep.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Wed, 27 Aug, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Tue, 2 Sep, arriving in London Heathrow.Price includes taxes and charges.From £110, select.

Shannon.£114 per passenger.Departing Thu, 25 Sep, returning Fri, 23 Jan.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Thu, 25 Sep, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Fri, 23 Jan, arriving in London Heathrow.Price includes taxes and charges.From £114, select.

Shannon.£121 per passenger.Departing Thu, 2 Oct, returning Sat, 4 Oct.Return flight with Aer Lingus.Outbound direct flight with Aer Lingus departs from London Heathrow on Thu, 2 Oct, arriving in Shannon.Inbound direct flight with Aer Lingus departs from Shannon on Sat, 4 Oct, arriving in London Heathrow.Price includes taxes and charges.From £121, 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 September.

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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	£92
Cheapest month to fly	September
Average flight time	1 hr, 29 mins
Most popular airline	Aer Lingus
Average flights per week	99

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

How much are return flights from London Heathrow to Shannon?

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

Which airlines fly direct from London Heathrow to Shannon?

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

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

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

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

How can I find the best flight deal to Shannon?

When is the best time to book flights to Shannon?

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

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

The average time for a direct flight from London Heathrow Airport to Shannon Airport is 1 hour 25 minutes.
London and Shannon are in the same timezone, UTC+0.
Flights from LHR to SNN start from 09:50 — the earliest with Aer Lingus. The latest departure is at 19:10 with Aer Lingus. Overall, there are 28 weekly London Heathrow Airport to Shannon Airport flights.
To ensure you catch your LHR to SNN flight, leave plenty of time to navigate the airport and find your gate. Turning up two hours before international departures and one hour before domestic flights is the general rule.
Be prepared for bigger queues during popular months such as July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure is a smart move.
Getting to Shannon (and then exploring more of Ireland!) is a cinch with Aer Lingus. This popular airline offers direct flights from London Heathrow Airport to Shannon Airport.
Aer Lingus is the airline most travellers choose to fly with on this route.
Among carriers operating LHR to SNN flights, Aer Lingus has the best record for on-time arrivals.
We make it simple to book a flight with a stopover. To see all your options for tickets from London Heathrow Airport to Shannon Airport, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to visit your chosen city. Stopovers between LHR and SNN include:
- Edinburgh Airport
- Charles de Gaulle Airport
- Manchester Airport

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

£44 is the best price for a one-way London Heathrow Airport to Shannon Airport flight. A return flight starts from £92. These fares can change depending on availability and demand.
To score cheap tickets from LHR to SNN, book your trip six months before your departure date.
May is the cheapest month for flights from London Heathrow Airport to Shannon Airport. If you're looking to fly at a different time of year, the 'Whole month' tool will show you the lowest prices for each month.
Cut down on the time spent looking for cheap flights from LHR to SNN by creating a Price Alert. You'll receive an email or notification through the app when a new low fare is offered.
Tailor your trip using filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from London Heathrow Airport to Shannon Airport.

Handy information about London Heathrow Airport (LHR)

68.18% of flights departing from London Heathrow Airport touch down at their destination on schedule.
Central London to London Heathrow Airport is around 19 miles. Depending on traffic, it'll take about 55 minutes to get there if you're catching a cab, ride-sharing or driving.
The trip when using public transport usually takes 1 hour.
Need a convenient hotel near LHR? If you've booked an early flight from London Heathrow Airport to Shannon Airport, these accommodation options will put you moments from your check-in counter:

Arriving at Shannon Airport (SNN)

Consider booking a hotel near SNN if you're catching a late London Heathrow Airport to Shannon Airport flight. Settle into one of these accommodation options and avoid the hassle of a long transfer:
Say yes to new adventures by picking up a Shannon Airport rental car. Grab your wheels from Easirent, Budget or Carhire and explore beyond Shannon's main sights.
Secure the lowest price by booking your vehicle from Shannon Airport around four weeks ahead of your departure.

Getting from Shannon Airport (SNN) to central Shannon

Shannon Airport is roughly 3 miles from central Shannon. Driving there takes about 5 minutes.
Getting there by public transport will take you roughly 10 minutes.

When to fly to Shannon Airport (SNN)

August is the most popular month for flights from London Heathrow Airport to Shannon Airport. For a quieter experience, visit Shannon in April.
Book your flight from London Heathrow Airport to Shannon Airport for July if you'd like to explore Shannon during its warmest month. Expect temperatures of between 10ºC (50ºF) and 22ºC (72ºF).
Search for cheap tickets from LHR to SNN in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

Explore more of Ireland

Dublin is just one of the many places in Ireland waiting to be explored after you've seen Shannon. Around 120 miles away to the north-east, well-known attractions include Guinness Storehouse, Trinity College Library and Dublin Castle.
If you're interested in discovering another well-known destination in Ireland, head for Cork, roughly 60 miles south of Shannon. Blarney Castle, Fota Wildlife Park and Titanic Experience Cobh are key highlights.