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Cheap flights from London to Shannon from £17

LON — SNN
21 Oct — 28 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Shannon are usually found in January or November, booked 39 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from London to Shannon

Enter your travel dates to find the best prices.

Cheapest flights from London to Shannon

Sat 10/1015:45 -
Nonstop1h 35m
Sun 11/1011:20 -
Nonstop1h 35m
Deal found 16/9£37
Fri 16/1018:55 -
Nonstop1h 30m
Sun 18/1007:30 -
Nonstop1h 30m
Deal found 16/9£37
Tue 29/915:05 -
Nonstop1h 35m
Tue 13/1013:00 -
Nonstop1h 35m
Deal found 18/9£38
Sat 26/908:00 -
Nonstop1h 30m
Sat 26/923:00 -
Nonstop1h 30m
Deal found 17/9£38
Tue 29/915:05 -
Nonstop1h 35m
Thu 8/1009:55 -
Nonstop1h 35m
Deal found 21/9£39
Sun 27/909:25 -
Nonstop1h 30m
Wed 30/920:50 -
Nonstop1h 30m
Deal found 20/9£39
Fri 2/1008:25 -
Nonstop1h 30m
Sun 4/1007:30 -
Nonstop1h 30m
Deal found 21/9£40
Wed 30/918:45 -
Nonstop1h 35m
Sat 10/1013:35 -
Nonstop1h 35m
Deal found 21/9£43
Wed 21/1018:45 -
Nonstop1h 35m
Wed 28/1018:05 -
Nonstop1h 30m
Deal found 16/9£44
Tue 22/909:55 -
Nonstop1h 30m
Sat 26/923:00 -
Nonstop1h 30m
Deal found 20/9£44
Sat 3/1015:45 -
Nonstop1h 35m
Mon 5/1012:40 -
Nonstop1h 35m
Deal found 17/9£45
Tue 22/909:55 -
Nonstop1h 30m
Wed 23/906:05 -
Nonstop1h 30m
Deal found 20/9£45

Find flight deals from London to Shannon

Round-trip from

£37

One-way from

£17

Popular in

December

Cheapest in

January

Average price

£85

Good round-trip deal

£40 or less

Good one-way deal

£19 or less
Ryanair
  • Ryanair
  • 10/10-11/10
  • Nonstop
  • 3h 10m total
  • London to Shannon
Search Deals
Ryanair
  • Ryanair
  • 21/11-31/12
  • Nonstop
  • 1h 30m total
  • London to Shannon
Search Deals
High demand for flights, 14% potential price rise
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Cheapest flight prices on average. 5% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from London (LON) to Shannon.
Search Deals
Price to beat on a one-way flight from London (LON) to Shannon.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London to Shannon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Mon 2/11

18:15-19:45

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Sat 21/11

20:00-21:30

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Wed 18/11

20:00-21:30

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Fri 6/11

16:35-18:05

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Fri 20/11

21:05-22:35

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Thu 10/12

13:10-14:40

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£19

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Fri 4/12

12:20-13:50

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£19

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Mon 4/1

09:40-11:10

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£19

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Thu 19/11

13:10-14:40

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£19

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Wed 2/12

20:00-21:30

Nonstop1h 30m

Shannon

Wed 31/12

00:00-00:00

Nonstop0h 00m

£20

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from London to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from London with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London to Shannon

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

Currently, November is the cheapest month in which you can book a flight from London to Shannon, Clare (average of £74). Flying from London to Shannon, Clare in December is currently the most expensive (average of £134). 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 LON to SNN?

When flying from London 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 54% versus a flight in the morning.

Weekly flight availability from London to Shannon, Clare

The most flights from LON to SNN are scheduled on a Friday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

How much does it cost for a return flight from London to Shannon, Clare?

Airfare is below average for this route at the moment.
London to Shannon, Clare flights typically cost between £46 and £129 in October.
The cheapest return price found within the last 5 days was £37 on Ryanair (10 Oct–11 Oct).

How far ahead should I book a flight from London to Shannon, Clare?

The best time to book flights from London to Shannon, Clare is 54 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 day to fly from London to Shannon, Clare?

Travellers seeking maximum savings on their London to Shannon, Clare flight should consider departing on Wednesday evenings when fares are most often at their lowest. Wednesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Shannon

Get a feel of what it's like to fly with Aer Lingus and Ryanair from London to Shannon by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,777 reviews
Check prices

Boarding

7.4

Overall

7.3

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

BOS - SNN

Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.
Aer Lingus
7.3
Good
1,777 reviews
Aer Lingus
7.3
Good
1,777 reviews
Check prices

Boarding

7.4

Overall

7.3

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

BOS - SNN

Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.
Ryanair
6.9
Okay
5,464 reviews
Aer Lingus
7.3
Good
1,777 reviews
Check prices

Boarding

7.4

Overall

7.3

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

BOS - SNN

Seats were very uncomfortable and mine was falling apart. My entertainment system didn’t work at all, just a black screen. It was hot in the plane, the airflow alternated between room temperature and warm. The food was gross.

Related info for your journey

  • What airport do you fly into for flights to Shannon from London?

    Shannon (SNN), located 2.1 mi from the city center, is the airport you fly into when you book flights from London to Shannon. 2 airlines have flights to Shannon from London on a regular basis. Booking flights from London to Shannon should not be difficult; the airport handles an average of 15 inbound flights from London per day.

  • How long is the flight from London to Shannon, Clare?

    For as low as £37, Ryanair can have you in Shannon, Clare from London in 1h 30m. London and Shannon, Clare are separated by a distance of 390 mi. All flights are typically direct.

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

    Cheapflights users have booked flights from London to Shannon, Clare round-trip from £31. Another airline that can offer you cheap pricing is Aer Lingus. Ryanair is priced at 60% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from London to Shannon, Clare?

    When deciding which route to take from London to Shannon, Clare consider London Gatwick - Shannon, London Heathrow - Shannon or London Stansted - Shannon as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from London to Shannon, Clare consider choosing American Airlines (86%), Qatar Airways (86%) or Air Canada (86%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from London to Shannon, Clare is generally £276, our data shows the cheapest flight currently is £43. When looking at the most popular route, (London Gatwick - Shannon), you can expect to pay £33 for that flight.

  • Can I find deals for flights from London to Shannon that include hotel bookings?

    Yes. In addition to deals on London to Shannon flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Shannon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Shannon.

  • Can I find deals for business class flights from London to Shannon?

    Yes. Cheapflights offers flight deals from London 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 to Shannon, Clare?

    Currently, November is the cheapest month in which you can book a flight from London to Shannon, Clare (average of £74). Flying from London to Shannon, Clare in December is currently the most expensive (average of £134). 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 Shannon?

Book flights to Shannon if you plan to visit one of these locations
Ennis
Tipperary

Browse thousands of different options on Cheapflights for your next trip

Fly from London to Shannon on these airlines

Ryanair flights from London to Shannon
Aer Lingus flights from London to Shannon

Top 2 airlines flying from London to Shannon

AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£31Average£76FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£92Average£137FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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