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Cheap flights from London to Shannon from £20

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SNN
5 Sep — 12 Sep1
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 Thursday or Friday and return on a Tuesday

Cheap flight deals from London to Shannon

Enter your travel dates to find the best prices.

Cheapest flights from London to Shannon
Explore the most affordable flight options available from London to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 August 2026.

Wed 26/822:45 -
Nonstop1h 30m
Sat 29/823:00 -
Nonstop1h 30m
Deal found 4/8£33
Fri 4/918:55 -
Nonstop1h 30m
Mon 7/906:20 -
Nonstop1h 30m
Deal found 3/8£34
Sat 19/915:45 -
Nonstop1h 35m
Mon 21/912:40 -
Nonstop1h 35m
Deal found 3/8£35
Fri 18/918:55 -
Nonstop1h 30m
Sun 20/907:30 -
Nonstop1h 30m
Deal found 5/8£35
Wed 9/918:45 -
Nonstop1h 35m
Wed 23/916:25 -
Nonstop1h 35m
Deal found 4/8£36
Wed 9/918:45 -
Nonstop1h 35m
Fri 11/916:55 -
Nonstop1h 35m
Deal found 3/8£36
Fri 6/1121:05 -
Nonstop1h 30m
Sun 8/1107:20 -
Nonstop1h 30m
Deal found 5/8£36
Fri 11/1212:20 -
Nonstop1h 30m
Fri 11/1219:10 -
Nonstop1h 30m
Deal found 2/8£37
Wed 2/918:45 -
Nonstop1h 35m
Wed 9/916:25 -
Nonstop1h 35m
Deal found 3/8£38
Wed 26/822:45 -
Nonstop1h 30m
Mon 31/806:20 -
Nonstop1h 30m
Deal found 2/8£38
Wed 19/808:00 -
Nonstop1h 30m
Wed 26/820:50 -
Nonstop1h 30m
Deal found 4/8£39
Fri 2/1018:55 -
Nonstop1h 30m
Sun 4/1007:30 -
Nonstop1h 30m
Deal found 3/8£39

Find flight deals from London to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 6 August 2026.

Round-trip from

£33

One-way from

£20

Popular in

December

Cheapest in

January

Average price

£86

Good round-trip deal

£35 or less

Good one-way deal

£27 or less
Ryanair
  • Ryanair
  • 26/8-29/8
  • Nonstop
  • 3h 00m total
  • London to Shannon
Search Deals
Ryanair
  • Ryanair
  • 7/11
  • Nonstop
  • 1h 30m total
  • London to Shannon
Search Deals
High demand for flights, 8% potential price rise
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
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.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 6 August 2026.
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

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Tue 15/9

09:55-11:25

Nonstop1h 30m

Shannon

Tue 22/9

08:00-09:30

Nonstop1h 30m

£33

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Fri 18/9

18:55-20:25

Nonstop1h 30m

Shannon

Sun 20/9

07:30-09:00

Nonstop1h 30m

£35

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Fri 25/9

18:55-20:25

Nonstop1h 30m

Shannon

Sun 27/9

07:30-09:00

Nonstop1h 30m

£36

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Tue 15/9

09:55-11:25

Nonstop1h 30m

Shannon

Wed 16/9

20:50-22:20

Nonstop1h 30m

£36

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Wed 9/9

18:45-20:20

Nonstop1h 35m

Shannon

Wed 16/9

16:25-18:00

Nonstop1h 35m

£36

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Fri 6/11

21:05-22:35

Nonstop1h 30m

Shannon

Sun 8/11

07:20-08:50

Nonstop1h 30m

£36

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Wed 26/8

22:45-00:15

Nonstop1h 30m

Shannon

Mon 31/8

06:20-07:50

Nonstop1h 30m

£38

LondonShannon

STN London Stansted - SNN Shannon

STNSNN

London Stansted

Fri 2/10

18:55-20:25

Nonstop1h 30m

Shannon

Sun 4/10

07:30-09:00

Nonstop1h 30m

£39

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Fri 6/11

16:35-18:05

Nonstop1h 30m

Shannon

Sun 8/11

15:55-17:25

Nonstop1h 30m

£40

LondonShannon

LGW London Gatwick - SNN Shannon

LGWSNN

London Gatwick

Sat 19/9

15:45-17:20

Nonstop1h 35m

Shannon

Tue 22/9

13:00-14:35

Nonstop1h 35m

£42

Flights are sorted by cheapest return flights first.

Deals found on 4/8

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
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 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 £68). Flying from London to Shannon, Clare in December is currently the most expensive (average of £131). 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?

Find hourly flight availability from London 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 6 August 2026.

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 51% versus a flight in the morning.

Weekly flight availability from London to Shannon, Clare

Explore weekly flight availability from London 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 6 August 2026.

The most flights from LON to SNN are scheduled on a Wednesday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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 £42 and £143 in August.
The cheapest return price found within the last 5 days was £33 on Ryanair (26 Aug–29 Aug).

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 38 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?

Use this chart to determine the cheapest time to fly return from London to Shannon. Price data was last updated on 6 December 2025.

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 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 6 August 2026.
Get a feel of what it's like to fly with Aer Lingus,Ryanair, andBritish Airways 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
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Overall

7.3

Crew

8.1

Food

6.7

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
1,691 reviews
Aer Lingus
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Overall

7.3

Crew

8.1

Food

6.7

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
5,460 reviews
Aer Lingus
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Overall

7.3

Crew

8.1

Food

6.7

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.
British Airways
6.7
Okay
8,150 reviews
Aer Lingus
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Comfort

7.2

Overall

7.3

Crew

8.1

Food

6.7

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

Find useful and relevant information for your journey from London 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?

    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 13 inbound flights from London per day.

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

    For as low as £33, 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 59% 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 Heathrow - Shannon, London Stansted - Shannon or London Gatwick - 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 (81%), Qatar Airways (81%) or Air Canada (81%) 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 £258, our data shows the cheapest flight currently is £75. When looking at the most popular route, (London Heathrow - Shannon), you can expect to pay £74 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 £68). Flying from London to Shannon, Clare in December is currently the most expensive (average of £131). 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

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Fly from London to Shannon on these airlines

Choose from the following airlines for your flight from London to Shannon. Flights are based on user searches made on Cheapflights and were last updated on 6 August 2026.
Ryanair flights from London to Shannon
Aer Lingus flights from London to Shannon
British Airways flights from London to Shannon

Top 2 airlines flying from London to Shannon

Discover the top 2 airlines that operate flights from London 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 6 August 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£31Average£74FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£95Average£134FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Shannon?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Shannon. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Shannon?

Cheapflights helps you find that perfect flight to Shannon from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Shannon with no change fees?

Need flexible booking options for your flight to Shannon from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Shannon become cheaper?

Of course! You can now track prices for flights from London to Shannon and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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