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Shannon

$65+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Shannon are usually found in January or March, booked 80 days in advance, depart on a Friday or Sunday and return on a Friday

Cheap 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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Expedia)

One-way from

$65
(Aer Lingus)

Popular in

December

Cheapest in

January

Average price

$188

Good round-trip deal

$165 or less

Good one-way deal

$366 or less
Provider with most accurate pricing for London Heathrow-Shannon flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Shannon flights.
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From London Heathrow to Shannon
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One-way flight from London Heathrow to Shannon
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High demand for flights, 7% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from London Heathrow to Shannon.
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Price to beat on a one-way flight from London Heathrow to Shannon.
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Find 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 October 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/20. 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 10/293:15 pmLHR - SNN
Nonstop1h 30mAer Lingus
Fri 10/318:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/20$129
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Tue 11/48:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/21$133
This Booking.com deal was found by Cheapflights users on 10/20. 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 12/1010:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Fri 12/128:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/20$151
This Aer Lingus deal was found by Cheapflights users on 10/20. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/113:15 pmLHR - SNN
Nonstop1h 30mAer Lingus
Wed 11/127:50 amSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 10/20$152
This FlightHub deal was found by Cheapflights users on 10/20. 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 11/36:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Sat 11/155:25 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 10/20$155
This Trip.com deal was found by Cheapflights users on 10/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Sun 11/98:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/20$164
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:15 pmLHR - SNN
Nonstop1h 30mAer Lingus
Sun 11/168:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/22$172
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
Wed 10/298:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/21$179
This Aer Lingus deal was found by Cheapflights users on 10/22. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Sun 11/98:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 10/22$192

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 October 22, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Shannon that are best for you.

Fly from

Heathrow

Fly to

Shannon

Route

Depart

Return

Price

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sun 11/2

10:00 am-11:30 am

Nonstop1h 30m

Shannon

Tue 11/4

8:05 pm-9:25 pm

Nonstop1h 20m

$133

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 11/3

3:15 pm-4:45 pm

Nonstop1h 30m

Shannon

Sat 11/15

5:25 pm-6:50 pm

Nonstop1h 25m

$133

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 11/11

3:15 pm-4:45 pm

Nonstop1h 30m

Shannon

Wed 11/12

7:50 am-9:15 am

Nonstop1h 25m

$152

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 11/6

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Sun 11/9

8:05 pm-9:25 pm

Nonstop1h 20m

$164

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/14

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Sun 11/16

8:05 pm-9:25 pm

Nonstop1h 20m

$172

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/21

3:15 pm-4:45 pm

Nonstop1h 30m

Shannon

Sun 11/23

7:50 am-9:15 am

Nonstop1h 25m

$172

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/7

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Sun 11/9

8:05 pm-9:25 pm

Nonstop1h 20m

$192

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 11/18

8:45 pm-6:30 pm

2 stops21h 45m

Shannon

Tue 11/25

5:30 pm-6:55 pm

Nonstop1h 25m

$230

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sun 2/1

6:05 pm-7:25 pm

Nonstop1h 20m

$98

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 11/3

6:05 pm-7:25 pm

Nonstop1h 20m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 18 results
1
2

Compare providers for flights from Heathrow to Shannon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Shannon in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 October 17, 2025.

The best time to book flights from London Heathrow Airport to Shannon, Clare is 80 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 $92). Flying from London Heathrow Airport to Shannon, Clare in August is currently the most expensive (average of $139). 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 October 22, 2025.

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 69% 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 October 22, 2025.
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
1,350 reviews

Entertainment

6.9

Comfort

7.1

Boarding

7.3

Crew

8.0

Food

6.5

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,350 reviews
Aer Lingus
7.2
Good
1,350 reviews

Entertainment

6.9

Comfort

7.1

Boarding

7.3

Crew

8.0

Food

6.5

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

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 30m. 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 $134, 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: American Airlines (63%), Qatar Airways (63%), Air Canada (63%).

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

    On average you can expect to pay $409 for a flight from London Heathrow Airport to Shannon, Clare. The cheapest flight overall is $70 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 $92). Flying from London Heathrow Airport to Shannon, Clare in August is currently the most expensive (average of $139). 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

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Heathrow to Dublin flights
Gatwick 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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$134Average$194FlexibilityNo cancel feeOn-timeN/A

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