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$88+ 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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — LHR
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
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Cheap 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 September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$162
(Mytrip)

One-way from

$78
(Mytrip)

Popular in

August

Cheapest in

February

Average price

$164

Good round-trip deal

$164 or less

Good one-way deal

$80 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. 12% potential increase in price ($22 potential increase over avg. RT price).
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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 September 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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Find 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 September 29, 2025.

This Mytrip deal was found by Cheapflights users on 9/27. 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 11/118:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Tue 11/186:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Deal found 9/27$162
This FlightHub deal was found by Cheapflights users on 9/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/278:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Wed 11/56:05 pmLHR - SNN
Nonstop1h 20mAer Lingus
Deal found 9/28$168
This Mytrip deal was found by Cheapflights users on 9/28. 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.
Sun 10/268:05 pmSNN - LHR
Nonstop1h 20mAer Lingus
Sun 11/210:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Deal found 9/28$172
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 11/115:50 amSNN - LHR
1 stop11h 25mMultiple Airlines
Tue 11/183:15 pmLHR - SNN
Nonstop1h 30mMultiple Airlines
Deal found 9/27$220
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Mon 10/278:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Wed 11/56:50 pmLHR - SNN
2 stops23h 10mMultiple Airlines
Deal found 9/28$222
This Travelocity deal was found by Cheapflights users on 9/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/268:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Sun 11/210:00 amLHR - SNN
Nonstop1h 30mMultiple Airlines
Deal found 9/28$227
This FlightHub deal was found by Cheapflights users on 9/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/227:50 amSNN - LHR
Nonstop1h 25mAer Lingus
Sun 11/2310:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Deal found 9/29$254
This Mytrip deal was found by Cheapflights users on 9/28. 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.
Thu 11/133:05 pmSNN - LHR
2 stops17h 00mMultiple Airlines
Tue 11/186:05 pmLHR - SNN
Nonstop1h 20mMultiple Airlines
Deal found 9/28$258

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 September 29, 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

Thu 11/13

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

Tue 11/18

3:15 pm-4:45 pm

Nonstop1h 30m

$162

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Tue 11/11

5:50 am-5:15 pm

1 stop11h 25m

London Heathrow

Tue 11/18

3:15 pm-4:45 pm

Nonstop1h 30m

$220

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Mon 10/27

8:05 pm-9:25 pm

Nonstop1h 20m

London Heathrow

Wed 11/5

6:50 pm-6:00 pm

2 stops23h 10m

$222

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 11/22

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

Sun 11/23

10:00 am-11:30 am

Nonstop1h 30m

$254

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Thu 11/13

3:05 pm-8:05 am

2 stops17h 00m

London Heathrow

Tue 11/18

6:05 pm-7:25 pm

Nonstop1h 20m

$258

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 10/25

4:50 pm-6:20 pm

Nonstop1h 30m

London Heathrow

Sat 11/1

10:00 am-11:30 am

Nonstop1h 30m

$276

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 12/6

5:25 pm-6:50 pm

Nonstop1h 25m

London Heathrow

Sun 12/7

10:00 am-11:30 am

Nonstop1h 30m

$290

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Fri 10/24

9:15 pm-10:40 pm

Nonstop1h 25m

London Heathrow

Mon 10/27

10:00 am-11:30 am

Nonstop1h 30m

$290

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Fri 10/31

5:30 pm-6:55 pm

Nonstop1h 25m

London Heathrow

Sun 11/2

6:05 pm-7:25 pm

Nonstop1h 20m

$290

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Tue 12/23

8:05 pm-9:25 pm

Nonstop1h 20m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/28

Showing 1-10 of 18 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 September.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Shannon, Clare-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, November is the cheapest month in which you can book a flight from Shannon, Clare to London Heathrow Airport (average of $661). Flying from Shannon, Clare to London Heathrow Airport in June is currently the most expensive (average of $1,096). 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 September 29, 2025.

When flying from Shannon, Clare to London Heathrow Airport, 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 78% versus a flight in the morning.

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 September 29, 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
1,306 reviews

Entertainment

6.9

Overall

7.2

Boarding

7.3

Comfort

7.1

Crew

8.0

Food

6.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Aer Lingus
7.2
Good
1,306 reviews
Aer Lingus
7.2
Good
1,306 reviews

Entertainment

6.9

Overall

7.2

Boarding

7.3

Comfort

7.1

Crew

8.0

Food

6.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

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 41% 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: Air Canada (78%), British Airways (73%), Aer Lingus( 73%).

  • 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 $391, our data indicates the cheapest price to be $65. 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, November is the cheapest month in which you can book a flight from Shannon, Clare to London Heathrow Airport (average of $661). Flying from Shannon, Clare to London Heathrow Airport in June is currently the most expensive (average of $1,096). 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
Hounslow
Hayes
Ilford
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone

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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 September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$97Average$164FlexibilityNo cancel feeOn-timeN/A

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