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$60+ Cheap flights from Shannon (SNN) to Heathrow (LHR)

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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — LHR
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Shannon to Heathrow

Cheapest flights from Shannon to Heathrow
Explore the most affordable flight options available from Shannon to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:45 pmSNN - LHR
1 stop18h 30mMultiple Airlines
Sun 12/283:15 pmLHR - SNN
Nonstop1h 30mMultiple Airlines
Deal found 12/26$5,845

Find flight deals from Shannon to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to Heathrow (LHR). 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$140
(Mytrip)

One-way from

$60
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$184

Good round-trip deal

$164 or less

Good one-way deal

$103 or less
Provider with most accurate pricing for Shannon-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Shannon-London Heathrow flights.
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From Shannon to London Heathrow
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One-way flight from Shannon to London Heathrow
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Highest demand for flights based on searches. 9% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Shannon to London Heathrow.
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Price to beat on a one-way flight from Shannon to London Heathrow.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Shannon to Heathrow 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 December 28, 2025.
Use the filters below to find and compare flights from Shannon to London Heathrow Airport that are best for you.

Fly from

Shannon

Fly to

Heathrow

Route

Depart

Return

Price

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 1/24

5:25 pm-6:50 pm

Nonstop1h 25m

London Heathrow

Sat 1/31

10:00 am-11:30 am

Nonstop1h 30m

$142

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Tue 2/10

8:05 pm-9:25 pm

Nonstop1h 20m

London Heathrow

Tue 2/17

3:15 pm-4:45 pm

Nonstop1h 30m

$143

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sun 2/1

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

Sun 2/1

3:15 pm-4:45 pm

Nonstop1h 30m

$143

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Thu 3/12

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

Fri 3/13

3:15 pm-4:45 pm

Nonstop1h 30m

$143

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 1/31

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

Sat 1/31

2:15 pm-3:45 pm

Nonstop1h 30m

$182

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Mon 2/9

11:15 pm-2:45 pm

2 stops15h 30m

London Heathrow

Mon 2/16

10:00 am-11:30 am

Nonstop1h 30m

$226

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 1/24

8:45 pm-1:25 pm

2 stops16h 40m

London Heathrow

Sat 1/31

10:00 am-11:30 am

Nonstop1h 30m

$230

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Thu 1/8

8:05 pm-9:25 pm

Nonstop1h 20m

London Heathrow

Fri 1/16

6:05 pm-7:25 pm

Nonstop1h 20m

$248

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 3/7

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

Sat 3/7

2:15 pm-3:45 pm

Nonstop1h 30m

$257

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 1/31

5:25 pm-6:50 pm

Nonstop1h 25m

London Heathrow

Sun 2/1

3:15 pm-4:45 pm

Nonstop1h 30m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 20 results
1
2

Compare providers for flights from Shannon to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Shannon to Heathrow in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Shannon, Clare-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Shannon, Clare-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Shannon, Clare-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon, Clare-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Shannon, Clare-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Shannon to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Shannon 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 Shannon to London Heathrow Airport

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

Currently, February is the cheapest month in which you can book a flight from Shannon, Clare to London Heathrow Airport (average of $41). Flying from Shannon, Clare to London Heathrow Airport in July is currently the most expensive (average of $152). 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 SNN to LHR?

Find hourly flight availability from Shannon to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 28, 2025.

When flying from Shannon, Clare to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated December 28, 2025.
Get a feel of what it's like to fly with Aer Lingus from Shannon to London Heathrow Airport 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
7.2
Good
1,412 reviews

Entertainment

6.9

Food

6.6

Comfort

7.1

Crew

8.0

Boarding

7.4

Overall

7.2

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.
Aer Lingus
7.2
Good
1,412 reviews
Aer Lingus
7.2
Good
1,412 reviews

Entertainment

6.9

Food

6.6

Comfort

7.1

Crew

8.0

Boarding

7.4

Overall

7.2

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.

Related info for your journey

Find useful and relevant information for your journey from Shannon to Heathrow. 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 from for flights from Shannon to London Heathrow?

    Most people fly from Shannon (SNN) if they book a flight from Shannon to London Heathrow. On average, Shannon has 11 outbound flights to London Heathrow per day from 1 airline. Shannon is conveniently located just 2.1 mi from Shannon’s city center.

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

    There are many flights that can get you from Shannon, Clare to London Heathrow Airport in 1h 25m. Fly via Aer Lingus to get the fastest option. Shannon, Clare and London Heathrow Airport are separated by a distance of 368 mi. Most flights are nonstop.

  • What is the cheapest airline to fly from Shannon, Clare to London Heathrow Airport round-trip?

    Our cheapest airline available from Shannon, Clare to London Heathrow Airport is Aer Lingus. Our recent data shows that you can find tickets from as low as $97 on this airline. Aer Lingus is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

    Before booking your flight to London Heathrow Airport from Shannon, Clare, check out the most reliable airlines to get you to your destination on time: British Airways (72%), Qatar Airways (72%), Aer Lingus( 71%).

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

    Looking for the cheapest flight from Shannon, Clare to London Heathrow Airport? While on average our users pay $351, our data indicates the cheapest price to be $103. The most popular route (Shannon - London Heathrow), is priced around $238.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Shannon, Clare to London Heathrow Airport (average of $41). Flying from Shannon, Clare to London Heathrow Airport in July is currently the most expensive (average of $152). 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?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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Alternative routes for Shannon to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Heathrow flights
Dublin to Gatwick flights
Cork to Heathrow flights

Top airline flying from Shannon to Heathrow

Discover the top airline that operate flights from Shannon to Heathrow. 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$97Average$164FlexibilityNo cancel feeOn-timeN/A

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