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Shannon

$59+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Shannon are usually found in January or November, 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 September 15, 2025.

Round-trip from

$129
(Mytrip)

One-way from

$59
(Aer Lingus)

Popular in

December

Cheapest in

January

Average price

$178

Good round-trip deal

$286 or less

Good one-way deal

$152 or less
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, 13% 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 September 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 10/296:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Wed 11/58:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 9/14$129
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Thu 10/92:40 pmLHR - SNN
Nonstop1h 30mAer Lingus
Mon 10/139:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 9/15$136
This FlightHub deal was found by Cheapflights users on 9/14. 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 11/310:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Sat 11/155:25 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 9/14$138
This Booking.com deal was found by Cheapflights users on 9/14. 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.
Sun 10/2610:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Tue 11/48:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 9/14$144
This Flightnetwork deal was found by Cheapflights users on 9/14. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Mon 11/38:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Deal found 9/14$168
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Mon 10/1311:05 amLHR - SNN
2 stops11h 45mMultiple Airlines
Mon 10/209:15 pmSNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 9/15$188
This Booking.com deal was found by Cheapflights users on 9/14. 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 9/252:40 pmLHR - SNN
Nonstop1h 30mAer Lingus
Sun 9/287:40 amSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 9/14$212
This Mytrip deal was found by Cheapflights users on 9/14. 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 10/264:20 pmLHR - SNN
2 stops8h 00mMultiple Airlines
Tue 11/45:30 pmSNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 9/14$215
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Tue 9/167:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
Sat 9/205:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 9/14$217
This Booking.com deal was found by Cheapflights users on 9/15. 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 11/73:15 pmLHR - SNN
Nonstop1h 30mMultiple Airlines
Sun 11/98:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Deal found 9/15$222
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/298:50 amLHR - SNN
2 stops7h 25mMultiple Airlines
Wed 11/58:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Deal found 9/14$225

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 September 15, 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 10/9

2:40 pm-4:10 pm

Nonstop1h 30m

Shannon

Mon 10/13

9:15 pm-10:40 pm

Nonstop1h 25m

$136

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 11/3

10:00 am-11:30 am

Nonstop1h 30m

Shannon

Sat 11/15

5:25 pm-6:50 pm

Nonstop1h 25m

$138

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sat 10/4

9:50 am-11:20 am

Nonstop1h 30m

Shannon

Mon 10/6

9:15 pm-10:40 pm

Nonstop1h 25m

$295

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sat 2/28

10:00 am-11:30 am

Nonstop1h 30m

Shannon

Tue 3/3

7:50 am-9:15 am

Nonstop1h 25m

$296

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 10/16

2:40 pm-4:10 pm

Nonstop1h 30m

Shannon

Mon 10/20

9:15 pm-10:40 pm

Nonstop1h 25m

$297

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 10/1

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

Sun 10/5

9:15 pm-10:40 pm

Nonstop1h 25m

$318

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/7

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Sun 11/9

8:15 am-10:50 am

1 stop26h 35m

$439

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sat 12/20

2:15 pm-3:45 pm

Nonstop1h 30m

Shannon

Sun 12/28

8:05 pm-9:25 pm

Nonstop1h 20m

$446

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 11/7

6:05 pm-7:25 pm

Nonstop1h 20m

Shannon

Sun 11/9

8:15 am-5:50 pm

2 stops9h 35m

$498

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sun 10/26

10:00 am-11:30 am

Nonstop1h 30m

Shannon

Mon 11/3

2:45 pm-9:15 am

1 stop18h 30m

$882

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 21 results
1
2
3

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 September 12, 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of $533). Flying from London Heathrow Airport to Shannon, Clare in June is currently the most expensive (average of $926). 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 September 15, 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 71% 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 September 15, 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
1,270 reviews

Comfort

7.1

Entertainment

6.9

Food

6.5

Overall

7.2

Crew

8.0

Boarding

7.3

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
1,270 reviews
Aer Lingus
7.2
Good
1,270 reviews

Comfort

7.1

Entertainment

6.9

Food

6.5

Overall

7.2

Crew

8.0

Boarding

7.3

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 14 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 $146, was found to be the cheapest airline from London Heathrow Airport to Shannon, Clare.. This flight start at 15% 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 (68%), Qatar Airways (68%), Air Canada (68%).

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

    On average you can expect to pay $430 for a flight from London Heathrow Airport to Shannon, Clare. The cheapest flight overall is $96 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of $533). Flying from London Heathrow Airport to Shannon, Clare in June is currently the most expensive (average of $926). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$146Average$196FlexibilityNo cancel feeOn-timeN/A

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