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Shannon

$66+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
ago 23 — ago 301
sab 8/23
sab 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Shannon are usually found in January or February, 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 agosto 18, 2025.

Round-trip from

$119
(Mytrip)

One-way from

$66
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$198

Good round-trip deal

$198 or less

Good one-way deal

$434 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, 7% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 18, 2025.

This Mytrip deal was found by Cheapflights users on 8/16. 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.
lun 9/157:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
lun 9/229:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/16$119
This Mytrip deal was found by Cheapflights users on 8/16. 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.
mar 9/167:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
ven 9/199:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/16$126
This Mytrip deal was found by Cheapflights users on 8/17. 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.
lun 9/227:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
mer 9/249:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/17$127
This Mytrip deal was found by Cheapflights users on 8/17. 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.
ven 9/197:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
dom 9/219:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/17$148
This Mytrip deal was found by Cheapflights users on 8/17. 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.
dom 9/147:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
dom 9/219:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/17$149
This Mytrip deal was found by Cheapflights users on 8/18. 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.
gio 10/27:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
gio 10/97:40 amSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/18$157
This Mytrip deal was found by Cheapflights users on 8/17. 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.
gio 9/119:50 amLHR - SNN
Nonstop1h 30mAer Lingus
dom 9/149:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/17$159
This Mytrip deal was found by Cheapflights users on 8/17. 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.
mer 8/279:50 amLHR - SNN
Nonstop1h 30mAer Lingus
mer 9/39:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/17$162
This Mytrip deal was found by Cheapflights users on 8/15. 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.
sab 9/132:20 pmLHR - SNN
Nonstop1h 30mAer Lingus
sab 9/205:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/15$167
This Mytrip deal was found by Cheapflights users on 8/15. 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.
dom 9/149:50 amLHR - SNN
Nonstop1h 30mAer Lingus
sab 9/205:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/15$172
This Booking.com deal was found by Cheapflights users on 8/16. 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.
ven 9/127:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
sab 9/135:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/16$173
This Mytrip deal was found by Cheapflights users on 8/17. 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.
gio 9/42:40 pmLHR - SNN
Nonstop1h 30mAer Lingus
dom 9/79:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 8/17$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 agosto 18, 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

lun 9/15

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

lun 9/22

9:15 pm-10:40 pm

Nonstop1h 25m

$119

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

mar 9/16

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

ven 9/19

9:15 pm-10:40 pm

Nonstop1h 25m

$126

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

lun 9/22

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

mer 9/24

9:15 pm-10:40 pm

Nonstop1h 25m

$127

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

ven 9/19

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

dom 9/21

9:15 pm-10:40 pm

Nonstop1h 25m

$148

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

dom 9/14

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

dom 9/21

9:15 pm-10:40 pm

Nonstop1h 25m

$149

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

gio 10/2

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

gio 10/9

7:40 am-9:05 am

Nonstop1h 25m

$157

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

gio 9/11

9:50 am-11:20 am

Nonstop1h 30m

Shannon

dom 9/14

9:15 pm-10:40 pm

Nonstop1h 25m

$159

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

sab 11/8

2:15 pm-3:45 pm

Nonstop1h 30m

Shannon

lun 11/10

8:05 pm-9:25 pm

Nonstop1h 20m

$162

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

sab 9/13

2:20 pm-3:50 pm

Nonstop1h 30m

Shannon

sab 9/20

5:30 pm-6:55 pm

Nonstop1h 25m

$167

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

dom 9/14

9:50 am-11:20 am

Nonstop1h 30m

Shannon

sab 9/20

5:30 pm-6:55 pm

Nonstop1h 25m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 21 results
1
2
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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 August 8, 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 $931). 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 agosto 18, 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.

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 agosto 18, 2025.

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 (10 on average).

How much does it cost to fly round-trip from London Heathrow Airport to Shannon, Clare?

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 agosto 18, 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
1,220 reviews

Boarding

7.3

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Comfort

7.1

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
1,220 reviews
Aer Lingus
7.2
Good
1,220 reviews

Boarding

7.3

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Comfort

7.1

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 25m. 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 (72%), Qatar Airways (72%), Air Canada (72%).

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

    On average you can expect to pay $412 for a flight from London Heathrow Airport to Shannon, Clare. The cheapest flight overall is $97 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 $931). 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 Cork flights
Heathrow to Dublin 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 agosto 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$140Average$196FlexibilityNo cancel feeOn-timeN/A

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