Cheap flights from London-Heathrow to Shannon
Cheap return flights from London-Heathrow to Shannon
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Shannon flight facts
What you need to know
What are the cheapest airlines?
- Ryanair
- Aer Lingus
- British Airways
These airlines usually offer the cheapest flights from London-Heathrow to Shannon.
What airlines fly indirectly?
- KLM
- Lufthansa
- Air France
These airlines fly from London-Heathrow to Shannon, but you’ll have at least one layover.
How long is the flight?
1 hour 30 minutes
This is the shortest flight time from London-Heathrow to Shannon.
Alternative flights from the UK to Shannon
Check out prices for other routes
Alternative flights from London-Heathrow
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London-Heathrow/Shannon route. There are around 35 flights on any given week from the UK to Shannon and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London-Heathrow to Shannon
Tips and advice from our flight experts
You've searched for flights from London-Heathrow to Shannon. We've found 15 flights and compared them to give you the best offers. Ryanair is, on average, the cheapest for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for the route from London-Heathrow to Shannon on 02/06/2026 at 17:35 for £31.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 5 airlines that operate the 450 km flight from London-Heathrow to Shannon.
To find the best offers, book in advance, especially during peak seasons. Last-minute deals can be risky. Ryanair is a popular and cheap option for this route, with an average flight duration of 1 hour 30 minutes. After selecting an offer, fill out your information, proceed with payment, and consider booking a hotel with us or using our flight + hotel service to save time and money.
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Where other people are flying to
