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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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 26 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 July 3, 2025.

Round-trip from

$130
(Mytrip)

One-way from

$66
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$196

Good round-trip deal

$226 or less

Good one-way deal

$253 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, 5% 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 July 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 July 3, 2025.

This Mytrip deal was found by Cheapflights users on 7/3. 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.
Tue 7/152:40 pmLHR - SNN
Nonstop1h 30mAer Lingus
Thu 7/179:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
Deal found 7/3$130
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Tue 9/169:35 pmLHR - SNN
1 stop16h 20mMultiple Airlines
Sat 9/205:30 pmSNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 7/3$197
This British Airways deal was found by Cheapflights users on 7/2. 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.
Wed 7/167:10 pmLHR - SNN
Nonstop1h 25mBritish Airways
Fri 8/229:15 pmSNN - LHR
Nonstop1h 25mBritish Airways
Deal found 7/2$299

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 July 3, 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

Tue 7/15

2:40 pm-4:10 pm

Nonstop1h 30m

Shannon

Thu 7/17

9:15 pm-10:40 pm

Nonstop1h 25m

$130

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 9/16

9:35 pm-1:55 pm

1 stop16h 20m

Shannon

Sat 9/20

5:30 pm-6:55 pm

Nonstop1h 25m

$197

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 7/16

7:10 pm-8:35 pm

Nonstop1h 25m

Shannon

Fri 8/22

9:15 pm-10:40 pm

Nonstop1h 25m

$299

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 7/22

7:10 pm-8:35 pm

Nonstop1h 25m

$66

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 9/18

7:00 am-7:50 pm

1 stop12h 50m

$126

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Thu 11/27

6:05 pm-7:25 pm

Nonstop1h 20m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 June 27, 2025.

The best time to book flights from London Heathrow Airport to Shannon, Clare is 26 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 $938). 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 July 3, 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 76% 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 July 3, 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 (5 on average).

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 July 3, 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Shannon, such as Aer Lingus and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.1
Good
1,144 reviews

Entertainment

6.8

Overall

7.1

Comfort

7.0

Crew

8.0

Boarding

7.2

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
Aer Lingus
7.1
Good
1,144 reviews
Aer Lingus
7.1
Good
1,144 reviews

Entertainment

6.8

Overall

7.1

Comfort

7.0

Crew

8.0

Boarding

7.2

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
British Airways
6.6
Okay
7,093 reviews
Aer Lingus
7.1
Good
1,144 reviews

Entertainment

6.8

Overall

7.1

Comfort

7.0

Crew

8.0

Boarding

7.2

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

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 12 inbound flights from London Heathrow per day.

  • What are the cheapest airlines flying from London Heathrow Airport to Shannon, Clare round-trip?

    Aer Lingus, at $130, was found to be the cheapest airline from London Heathrow Airport to Shannon, Clare. An alternate airline flying to your destination would be British Airways. These flights start at 24% lower than the current average price 3 months from now.

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

    On average you can expect to pay $435 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 $938). 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 London Heathrow Airport?

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Alternative routes for Heathrow to Shannon

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$140Average$194FlexibilityNo cancel feeOn-timeN/A

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