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Shannon

$63+ Cheap flights from Heathrow (LHR) to Shannon (SNN)

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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
Mar 27 — Apr 31
Fri 3/27
Fri 4/3
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Shannon are usually found in March or January, booked 62 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Heathrow to Shannon

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 February 25, 2026.

This Booking.com deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:10 pm
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Fri 4/109:15 pm
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 2/25$127
This Booking.com deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/43:15 pm
LHR
-
SNN
Nonstop1h 30m
Aer Lingus
Thu 3/58:05 pm
SNN
-
LHR
Nonstop1h 20m
Aer Lingus
Deal found 2/22$130
This Kiwi.com deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:10 pm
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Wed 4/157:30 am
SNN
-
LHR
Nonstop1h 35m
Aer Lingus
Deal found 2/22$132
This Booking.com deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:10 pm
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Fri 4/179:15 pm
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 2/24$156
This Mytrip deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:10 pm
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Thu 4/164:50 pm
SNN
-
LHR
Nonstop1h 30m
Aer Lingus
Deal found 2/23$157
This Booking.com deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:10 pm
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Mon 4/209:15 pm
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 2/22$159
This FlightHub deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:05 pm
LHR
-
SNN
Nonstop1h 20m
Aer Lingus
Thu 3/58:05 pm
SNN
-
LHR
Nonstop1h 20m
Aer Lingus
Deal found 2/25$162
This Booking.com deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:05 pm
LHR
-
SNN
Nonstop1h 20m
Aer Lingus
Sun 3/299:15 pm
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 2/23$173
This FlightHub deal was found by Cheapflights users on 2/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/110:00 am
LHR
-
SNN
Nonstop1h 30m
Aer Lingus
Thu 3/58:05 pm
SNN
-
LHR
Nonstop1h 20m
Aer Lingus
Deal found 2/25$180
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/282:15 pm
LHR
-
SNN
Nonstop1h 30m
Aer Lingus
Sun 3/17:50 am
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 2/21$189

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 February 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$127
(Booking.com)

One-way from

$63
(Booking.com)

Popular in

December

Cheapest in

March

Average price

$177

Good round-trip deal

$210 or less

Good one-way deal

$123 or less
Provider with most accurate pricing for London Heathrow-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Shannon flights.
Search Deals
From London Heathrow to Shannon
Search Deals
One-way flight from London Heathrow to Shannon
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Shannon.
Search Deals
Price to beat on a one-way flight from London Heathrow to Shannon.
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated February 25, 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

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 3/27

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Thu 4/2

7:30 am-9:05 am

Nonstop1h 35m

$295

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sat 3/21

2:15 pm-3:45 pm

Nonstop1h 30m

Shannon

Mon 3/23

8:05 pm-9:25 pm

Nonstop1h 20m

$295

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 3/20

10:00 am-11:30 am

Nonstop1h 30m

Shannon

Mon 3/23

7:50 am-9:15 am

Nonstop1h 25m

$296

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 5/5

2:40 pm-4:10 pm

Nonstop1h 30m

Shannon

Tue 5/5

9:15 pm-10:40 pm

Nonstop1h 25m

$299

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 5/6

2:40 pm-4:10 pm

Nonstop1h 30m

Shannon

Thu 5/7

4:50 pm-6:20 pm

Nonstop1h 30m

$299

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 7/3

9:50 am-11:20 am

Nonstop1h 30m

Shannon

Mon 7/6

9:15 pm-10:40 pm

Nonstop1h 25m

$319

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 4/10

10:40 pm-1:55 pm

3 stops15h 15m

Shannon

Fri 4/17

7:30 am-9:05 am

Nonstop1h 35m

$815

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 4/8

9:50 am-11:20 am

Nonstop1h 30m

Shannon

Wed 4/29

2:30 pm-7:20 am

1 stop16h 50m

$968

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 6/23

8:20 am-6:00 am

1 stop21h 40m

Shannon

Thu 6/25

7:30 am-9:05 am

Nonstop1h 35m

$972

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 4/20

9:50 am-11:20 am

Nonstop1h 30m

$95

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Showing 1-10 of 17 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on London Heathrow Airport-Shannon, Clare flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Shannon, Clare flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Shannon, Clare flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Shannon, Clare flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.
Estimated round-trip 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

How far ahead should I book a flight from London Heathrow Airport to Shannon, Clare?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Shannon. Price data was last updated on February 20, 2026.

The best time to book flights from London Heathrow Airport to Shannon, Clare is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Shannon, Clare?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of $43). Flying from London Heathrow Airport to Shannon, Clare in August is currently the most expensive (average of $134). 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 February 25, 2026.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Shannon, Clare in the afternoon. If you’re flexible enough to do this you can expect to save up to 54% on your trip compared to booking a flight in the morning.

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 February 25, 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Shannon, such as Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,464 reviews

Entertainment

7.0

Boarding

7.4

Crew

8.1

Overall

7.2

Comfort

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.2
Good
1,464 reviews
Aer Lingus
7.2
Good
1,464 reviews

Entertainment

7.0

Boarding

7.4

Crew

8.1

Overall

7.2

Comfort

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

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?

    Shannon (SNN), located 2.1 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Shannon. 1 airline have flights to Shannon from London Heathrow on a regular basis. Booking flights from London Heathrow to Shannon should not be difficult; the airport handles an average of 11 inbound flights from London Heathrow per day.

  • How long is the flight from London Heathrow Airport to Shannon, Clare?

    Departing from London Heathrow Airport to Shannon, Clare will take you 1h 20m. London Heathrow Airport and Shannon, Clare are separated by a distance of 368 mi. All flights are typically nonstop.

  • What is the cheapest airline to fly from London Heathrow Airport to Shannon, Clare round-trip?

    Aer Lingus, at $140, was found to be the cheapest airline from London Heathrow Airport to Shannon, Clare.. This flight start at 23% lower than the current average price 3 months from now.

  • What are the most reliable airlines from London Heathrow Airport to Shannon, Clare?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Shannon, Clare on time: Qatar Airways (74%), Aer Lingus (74%), British Airways (74%).

  • What are the cheapest flights from London Heathrow Airport to Shannon, Clare?

    On average you can expect to pay $247 for a flight from London Heathrow Airport to Shannon, Clare. The cheapest flight overall is $86 while the most popular route, (London Heathrow - Shannon) is currently priced at $17,261.

  • Can I find deals for flights from Heathrow to Shannon that include hotel bookings?

    Yes. In addition to deals on Heathrow to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Shannon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Shannon.

  • 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of $43). Flying from London Heathrow Airport to Shannon, Clare in August is currently the most expensive (average of $134). 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.

See more FAQs

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Ennis

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Alternative routes for Heathrow to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Dublin flights
Heathrow to Dublin flights
Heathrow to Cork flights

Top airline flying from Heathrow to Shannon

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 2,558,603 searches. Data last updated February 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$140Average$205FlexibilityNo cancel feeOn-timeN/A

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