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Cheap flights from London Heathrow Airport to Shannon from £87

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SNN
15 Apr — 22 Apr1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Shannon are usually found in January or February, 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 10 April 2025.

Round-trip from

£98

One-way from

£87

Popular in

December

Cheapest in

January

Average price

£138

Good round-trip deal

£106 or less

Good one-way deal

£119 or less
Aer Lingus
  • Aer Lingus
  • 11/5-17/5
  • Nonstop
  • 2h 50m total
  • London to Shannon
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17/5
  • 17/5
  • 1 total stop
  • 20h 15m total
  • London to Shannon
Search Deals
High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in April 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 10 April 2025.

Tue 15/414:40LHR - SNN
Nonstop1h 30mAer Lingus
Wed 16/407:40SNN - LHR
Nonstop1h 25mAer Lingus
Deal found 10/4£93
Sat 17/521:45LHR - SNN
1 stop20h 15mMultiple Airlines
Mon 26/521:15SNN - LHR
Nonstop1h 25mMultiple Airlines
Deal found 10/4£136
Tue 29/419:10LHR - SNN
Nonstop1h 25mBritish Airways
Tue 6/521:15SNN - LHR
Nonstop1h 25mBritish Airways
Deal found 10/4£217

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 10 April 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

Fri 1/8

15:50-08:25

2 stops16h 35m

Shannon

Mon 4/8

21:15-22:40

Nonstop1h 25m

£233

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 22/4

19:10-20:35

Nonstop1h 25m

Shannon

Sat 26/4

17:30-18:55

Nonstop1h 25m

£243

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 22/8

19:10-20:35

Nonstop1h 25m

Shannon

Mon 25/8

07:40-09:05

Nonstop1h 25m

£245

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Tue 22/4

09:45-05:55

1 stop20h 10m

Shannon

Sat 26/4

14:40-07:45

1 stop17h 05m

£7,395

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Fri 23/5

09:30-10:15

1 stop24h 45m

Shannon

Mon 26/5

12:30-07:15

1 stop18h 45m

£12,493

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Wed 10/9

11:05-07:30

1 stop20h 25m

Shannon

Wed 17/9

09:30-08:20

1 stop22h 50m

£13,436

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sat 17/5

21:45-18:00

1 stop20h 15m

£87

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Sun 6/7

09:50-11:20

Nonstop1h 30m

£88

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 21/4

09:50-11:20

Nonstop1h 30m

£117

LondonShannon

LHR - SNN

LHRSNN

London Heathrow

Mon 8/9

11:05-07:30

1 stop20h 25m

£3,529

Flights are sorted by cheapest return flights first.

Deals found on 10/4

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 return 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 return flight from Heathrow to Shannon. Price data was last updated on 4 April 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Shannon, Clare, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Shannon, Clare?

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of £69). Flying from London Heathrow Airport to Shannon, Clare in July is currently the most expensive (average of £126). 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 10 April 2025.

When flying from London Heathrow Airport to Shannon, Clare, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 74% versus a flight in the morning.

What is the cheapest day to fly from London Heathrow Airport to Shannon, Clare?

Use this chart to determine the cheapest time to fly return from Heathrow to Shannon. Price data was last updated on 30 March 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Shannon, Clare flight should consider departing on Friday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 10 April 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).

Rainfall in Shannon by month

Plan your trip to Shannon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Shannon, Clare ranges from 59.0 - 105.0 inches per month. October is typically the wettest month, when rainfall can reach 105.0 mm. April is typically the driest time to visit Shannon, Clare when rainfall is around 59.0 mm.

Temperature in Shannon by month

Plan your trip to Shannon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Shannon, Clare, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.0 C).

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 10 April 2025.
Read reviews from past customers who have flown United Airlines, American Airlines and Aer Lingus from London to Shannon. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,636 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
8,636 reviews
United Airlines
7.4
Good
8,636 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,636 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
Aer Lingus
7.0
Good
1,060 reviews
United Airlines
7.4
Good
8,636 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
Lufthansa
6.7
Okay
6,985 reviews
United Airlines
7.4
Good
8,636 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
British Airways
6.6
Okay
6,735 reviews
United Airlines
7.4
Good
8,636 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

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?

    For a flight from London Heathrow to Shannon, you will be flying into Shannon. Shannon (SNN) is just 2.1 mi from the center of the city. Shannon is the only Shannon airport and it handles 12 inbound flights from London Heathrow per day. 3 airlines have flights to Shannon from London Heathrow on a regular basis.

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

    Flying on Aer Lingus is currently your cheapest option to Shannon, Clare, with prices starting at £98. Additional return tickets that might be worth considering are offered by British Airways and American Airlines, with the lowest prices starting at £217 and £7,395, respectively. Aer Lingus is priced at 26% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to Shannon, Clare one-way?

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as £88. However, be on the lookout for offers from British Airways and United Airlines, as they are both options that can get you from London Heathrow Airport to Shannon, Clare for a low price.

  • What are the most reliable airlines from London Heathrow Airport to Shannon, Clare?

    Before booking your flight to Shannon, Clare from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: American Airlines (0%), Qatar Airways (0%), Air Canada( 0%).

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

    While on average a flight from London Heathrow Airport to Shannon, Clare is generally £267, our data shows the cheapest flight currently is £61. When looking at the most popular route, (London Heathrow - Shannon), you can expect to pay £78 for that flight.

  • 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 holiday 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, April is the cheapest month in which you can book a flight from London Heathrow Airport to Shannon, Clare (average of £69). Flying from London Heathrow Airport to Shannon, Clare in July is currently the most expensive (average of £126). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ennis
Tipperary

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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.
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Top 3 airlines flying from Heathrow to Shannon

Discover the top 3 airlines 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 858,174 searches. Data last updated 10 April 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£30Average£41FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£90Average£139FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£175Average£226FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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