Cheap flights from London Heathrow Airport to Shannon from £43
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
28 Sep — 5 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Shannon are usually found in February or March, booked 62 days in advance, depart on a Friday or Thursday and return on a Thursday
Cheap flight deals from Heathrow to Shannon
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from Heathrow to Shannon
Explore the most affordable flight options available from Heathrow to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2026.
Mon 12/1019:10 -
Nonstop1h 25m
Mon 19/1021:15 -
Nonstop1h 25m
Deal found 28/8£76
Thu 1/1019:10 -
Nonstop1h 25m
Tue 6/1016:50 -
Nonstop1h 30m
Deal found 28/8£77
Fri 16/1019:10 -
Nonstop1h 25m
Wed 28/1007:50 -
Nonstop1h 25m
Deal found 28/8£77
Mon 5/1019:10 -
Nonstop1h 25m
Wed 14/1016:50 -
Nonstop1h 30m
Deal found 28/8£78
Mon 28/914:40 -
Nonstop1h 30m
Mon 12/1016:50 -
Nonstop1h 30m
Deal found 28/8£80
Fri 6/1118:05 -
Nonstop1h 20m
Sun 15/1120:05 -
Nonstop1h 20m
Deal found 28/8£83
Thu 15/1019:10 -
Nonstop1h 25m
Sun 18/1007:30 -
Nonstop1h 35m
Deal found 28/8£83
Thu 1/1019:10 -
Nonstop1h 25m
Wed 14/1016:50 -
Nonstop1h 30m
Deal found 26/8£84
Wed 30/919:10 -
Nonstop1h 25m
Mon 5/1021:15 -
Nonstop1h 25m
Deal found 28/8£85
Mon 12/1019:10 -
Nonstop1h 25m
Thu 15/1021:15 -
Nonstop1h 25m
Deal found 28/8£87
Best flights from Heathrow to Shannon
Discover carefully curated flight deals from Heathrow to Shannon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.
Mon 12/1019:10 -
Nonstop1h 25m
Thu 15/1021:15 -
Nonstop1h 25m
Deal found 28/8£87
Tue 8/914:40 -
Nonstop1h 30m
Tue 15/921:15 -
Nonstop1h 25m
Deal found 29/8£223
Mon 14/909:50 -
Nonstop1h 30m
Fri 18/921:15 -
Nonstop1h 25m
Deal found 29/8£223
Wed 14/1019:10 -
Nonstop1h 25m
Fri 16/1016:50 -
Nonstop1h 30m
Deal found 27/8£223
Wed 14/1019:10 -
Nonstop1h 25m
Thu 15/1007:30 -
Nonstop1h 35m
Deal found 28/8£223
Sun 13/914:35 -
Nonstop1h 30m
Thu 17/907:30 -
Nonstop1h 35m
Deal found 28/8£224
Tue 29/919:10 -
Nonstop1h 25m
Sun 4/1007:30 -
Nonstop1h 35m
Deal found 24/8£224
Sat 12/909:50 -
Nonstop1h 30m
Wed 16/916:50 -
Nonstop1h 30m
Deal found 27/8£224
Thu 1/1019:10 -
Nonstop1h 25m
Sat 3/1016:50 -
Nonstop1h 30m
Deal found 24/8£224
Fri 11/919:30 -
1 stop15h 45m
Tue 15/912:30 -
1 stop17h 25m
Deal found 26/8£2,838
Direct flights from Heathrow to Shannon
Explore direct flight options from Heathrow to Shannon based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 August 2026.
Mon 12/1019:10 -
Nonstop1h 25m
Mon 19/1021:15 -
Nonstop1h 25m
Deal found 28/8£76
Thu 1/1019:10 -
Nonstop1h 25m
Tue 6/1016:50 -
Nonstop1h 30m
Deal found 28/8£77
Fri 16/1019:10 -
Nonstop1h 25m
Wed 28/1007:50 -
Nonstop1h 25m
Deal found 28/8£77
Mon 5/1019:10 -
Nonstop1h 25m
Wed 14/1016:50 -
Nonstop1h 30m
Deal found 28/8£78
Mon 28/914:40 -
Nonstop1h 30m
Mon 12/1016:50 -
Nonstop1h 30m
Deal found 28/8£80
Fri 6/1118:05 -
Nonstop1h 20m
Sun 15/1120:05 -
Nonstop1h 20m
Deal found 28/8£83
Thu 15/1019:10 -
Nonstop1h 25m
Sun 18/1007:30 -
Nonstop1h 35m
Deal found 28/8£83
Thu 1/1019:10 -
Nonstop1h 25m
Wed 14/1016:50 -
Nonstop1h 30m
Deal found 26/8£84
Wed 30/919:10 -
Nonstop1h 25m
Mon 5/1021:15 -
Nonstop1h 25m
Deal found 28/8£85
Mon 12/1019:10 -
Nonstop1h 25m
Thu 15/1021:15 -
Nonstop1h 25m
Deal found 28/8£87
Last-minute flights from Heathrow to Shannon
Discover last-minute flight deals from Heathrow to Shannon. Data last updated 29 August 2026 and is based on user searches.
Mon 7/919:10 -
Nonstop1h 25m
Tue 29/921:15 -
Nonstop1h 25m
Deal found 25/8£94
Mon 7/919:10 -
Nonstop1h 25m
Tue 8/907:30 -
Nonstop1h 35m
Deal found 25/8£96
Mon 7/919:10 -
Nonstop1h 25m
Thu 10/921:15 -
Nonstop1h 25m
Deal found 26/8£98
Mon 7/919:10 -
Nonstop1h 25m
Wed 9/921:15 -
Nonstop1h 25m
Deal found 25/8£99
Wed 16/919:10 -
Nonstop1h 25m
Mon 21/921:15 -
Nonstop1h 25m
Deal found 25/8£97
Tue 22/919:10 -
Nonstop1h 25m
Tue 29/916:50 -
Nonstop1h 30m
Deal found 25/8£93
Wed 23/914:40 -
Nonstop1h 30m
Wed 30/921:15 -
Nonstop1h 25m
Deal found 26/8£94
Fri 25/919:10 -
Nonstop1h 25m
Mon 28/921:15 -
Nonstop1h 25m
Deal found 26/8£100
Sun 27/909:50 -
Nonstop1h 30m
Sun 4/1021:15 -
Nonstop1h 25m
Deal found 27/8£101
Mon 28/914:40 -
Nonstop1h 30m
Mon 12/1016:50 -
Nonstop1h 30m
Deal found 28/8£80
Wed 30/919:10 -
Nonstop1h 25m
Mon 5/1021:15 -
Nonstop1h 25m
Deal found 28/8£85
One-way flights from Heathrow to Shannon
Search for one-way flight options from Heathrow to Shannon. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.
Thu 15/1014:40 -
Nonstop1h 30m
Deal found 28/8£43
Tue 13/1009:50 -
Nonstop1h 30m
Deal found 28/8£44
Mon 5/1014:40 -
Nonstop1h 30m
Deal found 28/8£46
Tue 8/914:40 -
Nonstop1h 30m
Deal found 25/8£48
Wed 23/914:40 -
Nonstop1h 30m
Deal found 26/8£49
Wed 28/1015:15 -
Nonstop1h 30m
Deal found 27/8£52
Mon 7/919:10 -
Nonstop1h 25m
Deal found 26/8£52
Mon 26/1018:05 -
Nonstop1h 20m
Deal found 28/8£69
Sat 5/909:50 -
Nonstop1h 30m
Deal found 24/8£70
Find flight deals from Heathrow to Shannon
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Shannon (SNN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 August 2026.
Customise your flight search to find flights from Heathrow to Shannon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 29 August 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Shannon that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Mon 12/10
19:10-20:35
Nonstop1h 25m
Shannon
Thu 15/10
21:15-22:40
Nonstop1h 25m
£87
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Tue 8/9
14:40-16:10
Nonstop1h 30m
Shannon
Tue 15/9
21:15-22:40
Nonstop1h 25m
£223
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Mon 14/9
09:50-11:20
Nonstop1h 30m
Shannon
Fri 18/9
21:15-22:40
Nonstop1h 25m
£223
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Wed 14/10
19:10-20:35
Nonstop1h 25m
Shannon
Fri 16/10
16:50-18:20
Nonstop1h 30m
£223
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Wed 14/10
19:10-20:35
Nonstop1h 25m
Shannon
Thu 15/10
07:30-09:05
Nonstop1h 35m
£223
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Sun 13/9
14:35-16:05
Nonstop1h 30m
Shannon
Thu 17/9
07:30-09:05
Nonstop1h 35m
£224
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Tue 29/9
19:10-20:35
Nonstop1h 25m
Shannon
Sun 4/10
07:30-09:05
Nonstop1h 35m
£224
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Sat 12/9
09:50-11:20
Nonstop1h 30m
Shannon
Wed 16/9
16:50-18:20
Nonstop1h 30m
£224
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Thu 1/10
19:10-20:35
Nonstop1h 25m
Shannon
Sat 3/10
16:50-18:20
Nonstop1h 30m
£224
LondonShannon
LHR London Heathrow - SNN Shannon
LHRSNN
London Heathrow
Fri 11/9
19:30-11:15
1 stop15h 45m
Shannon
Tue 15/9
12:30-05:55
1 stop17h 25m
£2,838
Flights are sorted by cheapest return flights first.
Deals found on 27/8
Showing 1-10 of 18 resultsSorted by cheapest first
1
2
Best time to book a flight from Heathrow to Shannon
Have a flexible travel schedule? Discover the best time to fly to Shannon from Heathrow with our price prediction graph.
LHR-SNN
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Shannon
Prices
Airlines
How far ahead should I book a flight from London Heathrow Airport to Shannon, Clare?
To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Shannon, Clare, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from London Heathrow Airport to Shannon, Clare?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of £117). Flying from London Heathrow Airport to Shannon, Clare in May is currently the most expensive (average of £161). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to SNN?
Find hourly flight availability from Heathrow to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2026.
When flying from London Heathrow Airport to Shannon, Clare, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 70% versus a flight in the morning.
What is the cheapest day to fly from London Heathrow Airport to Shannon, Clare?
Use this chart to determine the cheapest time to fly return from Heathrow to Shannon. Price data was last updated on 22 August 2026.
Travellers seeking maximum savings on their London Heathrow Airport to Shannon, Clare flight should consider departing on Saturday afternoons when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost for a return flight from London Heathrow Airport to Shannon, Clare?
Airfare is below average for this route at the moment.
London Heathrow Airport to Shannon, Clare flights typically cost between £98 and £153 in October.The cheapest return price found within the last 5 days was £76 on Aer Lingus (12 Oct–19 Oct).
Weekly flight availability from London Heathrow Airport to Shannon, Clare
Explore weekly flight availability from Heathrow to Shannon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 August 2026.
The most flights from LHR to SNN are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
Reviews of airlines servicing Shannon
Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated 29 August 2026.
Check out reviews from past customers who have flown with Aer Lingus from London Heathrow Airport to Shannon to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.
Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Shannon from London Heathrow?
For a flight from London Heathrow to Shannon, you will be flying into Shannon. Shannon (SNN) is just 2.1 mi from the center of the city. Shannon is the only Shannon airport and it handles 12 inbound flights from London Heathrow per day. 1 airline has flights to Shannon from London Heathrow on a regular basis.
How long is the flight from London Heathrow Airport to Shannon, Clare?
For as low as £87, Aer Lingus can have you in Shannon, Clare from London Heathrow Airport in 1h 25m. Airlines will cover a distance of 368 mi. Most flights are nonstop.
What is the cheapest airline to fly from London Heathrow Airport to Shannon, Clare round-trip?
Flying on Aer Lingus is currently your cheapest option to Shannon, Clare, with prices starting at £92. Aer Lingus is priced at 32% lower than the current average price of a flight leaving 3 months from now.
What are the most reliable airlines from London Heathrow Airport to Shannon, Clare?
Before booking your flight to Shannon, Clare from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: American Airlines (85%), Qatar Airways (85%), Air Canada( 85%).
What are the cheapest flights from London Heathrow Airport to Shannon, Clare?
While on average a flight from London Heathrow Airport to Shannon, Clare is generally £237, our data shows the cheapest flight currently is £51. When looking at the most popular route, (London Heathrow - Shannon), you can expect to pay £77 for that flight.
Can I find deals for business class flights from Heathrow to Shannon?
Yes. Cheapflights offers flight deals from Heathrow to Shannon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Shannon, Clare?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of £117). Flying from London Heathrow Airport to Shannon, Clare in May is currently the most expensive (average of £161). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Shannon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 August 2026.
Discover the top airline that operate flights from Heathrow to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 29 August 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to Shannon?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Shannon from Heathrow today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Shannon?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Shannon.
Can Cheapflights find flights from Heathrow to Shannon with no change fees?
Yes! Cheapflights helps users easily find flights from Heathrow to Shannon with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to Shannon become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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