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Shannon

$102+ 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 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
Dec 7 — Dec 141
Sun 12/7
Sun 12/14
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 Saturday 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 November 7, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$121
(Mytrip)

One-way from

$102
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$160

Good round-trip deal

$197 or less

Good one-way deal

$495 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, 8% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 7, 2025.

This Mytrip deal was found by Cheapflights users on 11/6. 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 12/43:15 pmLHR - SNN
Nonstop1h 30mAer Lingus
Thu 12/115:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 11/6$121
This Mytrip deal was found by Cheapflights users on 11/6. 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 11/203:15 pmLHR - SNN
Nonstop1h 30mAer Lingus
Fri 11/218:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 11/6$146
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Thu 11/610:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Thu 11/137:50 amSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 11/5$212
This Trip.com deal was found by Cheapflights users on 11/5. 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 11/63:15 pmLHR - SNN
Nonstop1h 30mMultiple Airlines
Thu 11/138:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Deal found 11/5$241
This Priceline deal was found by Cheapflights users on 11/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:00 amLHR - SNN
Nonstop1h 30mMultiple Airlines
Wed 11/128:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Deal found 11/5$257
This Mytrip deal was found by Cheapflights users on 11/6. 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 12/46:30 amLHR - SNN
2 stops15h 10mMultiple Airlines
Thu 12/115:30 pmSNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 11/6$268
This Mytrip deal was found by Cheapflights users on 11/6. 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 11/207:50 amLHR - SNN
2 stops10h 10mMultiple Airlines
Fri 11/218:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Deal found 11/6$273
This Mytrip deal was found by Cheapflights users on 11/5. 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.
Sun 12/216:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Sun 12/288:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 11/5$281
This British Airways deal was found by Cheapflights users on 11/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:05 pmLHR - SNN
Nonstop1h 20mBritish Airways
Mon 11/245:30 pmSNN - LHR
Nonstop1h 25mBritish Airways
Deal found 11/6$287
This British Airways deal was found by Cheapflights users on 11/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/82:15 pmLHR - SNN
Nonstop1h 30mBritish Airways
Wed 11/125:30 pmSNN - LHR
Nonstop1h 25mBritish Airways
Deal found 11/6$307
This British Airways deal was found by Cheapflights users on 11/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:00 amLHR - SNN
Nonstop1h 30mBritish Airways
Mon 12/157:50 amSNN - LHR
Nonstop1h 25mBritish Airways
Deal found 11/5$308
This British Airways deal was found by Cheapflights users on 11/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:05 pmLHR - SNN
Nonstop1h 20mBritish Airways
Sat 12/205:25 pmSNN - LHR
Nonstop1h 25mBritish Airways
Deal found 11/5$328

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 November 7, 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

Thu 12/4

3:15 pm-4:45 pm

Nonstop1h 30m

Shannon

Thu 12/11

5:30 pm-6:55 pm

Nonstop1h 25m

$121

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 11/20

3:15 pm-4:45 pm

Nonstop1h 30m

Shannon

Fri 11/21

8:05 pm-9:25 pm

Nonstop1h 20m

$146

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 4/1

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

Sat 4/4

7:40 am-9:05 am

Nonstop1h 25m

$181

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 12/4

6:30 am-9:40 pm

2 stops15h 10m

Shannon

Thu 12/11

5:30 pm-6:55 pm

Nonstop1h 25m

$268

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 11/20

7:50 am-6:00 pm

2 stops10h 10m

Shannon

Fri 11/21

8:05 pm-9:25 pm

Nonstop1h 20m

$273

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sun 12/21

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Sun 12/28

8:05 pm-9:25 pm

Nonstop1h 20m

$281

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sat 2/28

2:15 pm-3:45 pm

Nonstop1h 30m

Shannon

Tue 3/3

7:50 am-9:15 am

Nonstop1h 25m

$286

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/28

3:15 pm-4:45 pm

Nonstop1h 30m

Shannon

Mon 12/1

5:30 pm-6:55 pm

Nonstop1h 25m

$287

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/21

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Mon 11/24

5:30 pm-6:55 pm

Nonstop1h 25m

$287

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 4/1

9:50 am-11:20 am

Nonstop1h 30m

Shannon

Sat 4/4

12:00 pm-8:15 am

2 stops20h 15m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 20 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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Shannon, Clare flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 31, 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 November 7, 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 65% 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 November 7, 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
1,365 reviews

Food

6.6

Boarding

7.4

Entertainment

6.9

Crew

8.0

Overall

7.2

Comfort

7.1

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Aer Lingus
7.2
Good
1,365 reviews
Aer Lingus
7.2
Good
1,365 reviews

Food

6.6

Boarding

7.4

Entertainment

6.9

Crew

8.0

Overall

7.2

Comfort

7.1

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.

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: Qatar Airways (66%), Aer Lingus (66%), British Airways (66%).

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

    On average you can expect to pay $427 for a flight from London Heathrow Airport to Shannon, Clare. The cheapest flight overall is $151 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 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 November 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$134Average$195FlexibilityNo cancel feeOn-timeN/A

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