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$65+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — LHR
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
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 agosto 14, 2025.

Round-trip from

$126
(Mytrip)

One-way from

$65
(Aer Lingus)

Popular in

August

Cheapest in

February

Average price

$215

Good round-trip deal

$179 or less

Good one-way deal

$100 or less
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. 13% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 14, 2025.

This Mytrip deal was found by Cheapflights users on 8/13. 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.
mié. 9/107:40 amSNN - LHR
Nonstop1h 25mAer Lingus
mié. 9/172:40 pmLHR - SNN
Nonstop1h 30mAer Lingus
Deal found 8/13$126
This Aer Lingus deal was found by Cheapflights users on 8/13. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/129:15 pmSNN - LHR
Nonstop1h 25mAer Lingus
vie. 9/197:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
Deal found 8/13$130
This Mytrip deal was found by Cheapflights users on 8/13. 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.
sáb. 9/275:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
sáb. 10/42:20 pmLHR - SNN
Nonstop1h 30mAer Lingus
Deal found 8/13$146
This Mytrip deal was found by Cheapflights users on 8/14. 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.
dom. 9/287:40 amSNN - LHR
Nonstop1h 25mAer Lingus
dom. 10/52:35 pmLHR - SNN
Nonstop1h 30mAer Lingus
Deal found 8/14$162
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
mar. 11/47:50 amSNN - LHR
Nonstop1h 25mMultiple Airlines
vie. 11/79:10 pmLHR - SNN
1 stop22h 55mMultiple Airlines
Deal found 8/13$206
This Booking.com deal was found by Cheapflights users on 8/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/125:30 pmSNN - LHR
Nonstop1h 25mAer Lingus
dom. 12/1410:00 amLHR - SNN
Nonstop1h 30mAer Lingus
Deal found 8/13$213
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
vie. 12/128:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
dom. 12/146:50 amLHR - SNN
1 stop6h 00mMultiple Airlines
Deal found 8/13$237
This Orbitz deal was found by Cheapflights users on 8/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/209:15 pmSNN - LHR
Nonstop1h 25mMultiple Airlines
mié. 8/277:10 pmLHR - SNN
Nonstop1h 25mMultiple Airlines
Deal found 8/13$243
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
sáb. 9/275:30 pmSNN - LHR
Nonstop1h 25mMultiple Airlines
sáb. 10/49:50 pmLHR - SNN
1 stop14h 50mMultiple Airlines
Deal found 8/13$256
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
mié. 9/109:35 pmSNN - LHR
2 stops11h 45mMultiple Airlines
mié. 9/177:10 pmLHR - SNN
Nonstop1h 25mMultiple Airlines
Deal found 8/13$265

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 agosto 14, 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

mié. 9/10

7:40 am-9:05 am

Nonstop1h 25m

London Heathrow

mié. 9/17

2:40 pm-4:10 pm

Nonstop1h 30m

$126

ShannonLondon

SNN - LHR

SNNLHR

Shannon

vie. 9/12

9:15 pm-10:40 pm

Nonstop1h 25m

London Heathrow

vie. 9/19

7:10 pm-8:35 pm

Nonstop1h 25m

$130

ShannonLondon

SNN - LHR

SNNLHR

Shannon

sáb. 9/27

5:30 pm-6:55 pm

Nonstop1h 25m

London Heathrow

sáb. 10/4

2:20 pm-3:50 pm

Nonstop1h 30m

$146

ShannonLondon

SNN - LHR

SNNLHR

Shannon

dom. 9/28

7:40 am-9:05 am

Nonstop1h 25m

London Heathrow

dom. 10/5

2:35 pm-4:05 pm

Nonstop1h 30m

$162

ShannonLondon

SNN - LHR

SNNLHR

Shannon

mar. 11/4

7:50 am-9:15 am

Nonstop1h 25m

London Heathrow

vie. 11/7

9:10 pm-8:05 pm

1 stop22h 55m

$206

ShannonLondon

SNN - LHR

SNNLHR

Shannon

vie. 12/12

5:30 pm-6:55 pm

Nonstop1h 25m

London Heathrow

dom. 12/14

10:00 am-11:30 am

Nonstop1h 30m

$213

ShannonLondon

SNN - LHR

SNNLHR

Shannon

vie. 12/12

8:05 pm-9:25 pm

Nonstop1h 20m

London Heathrow

dom. 12/14

6:50 am-12:50 pm

1 stop6h 00m

$237

ShannonLondon

SNN - LHR

SNNLHR

Shannon

sáb. 9/27

5:30 pm-6:55 pm

Nonstop1h 25m

London Heathrow

sáb. 10/4

9:50 pm-12:40 pm

1 stop14h 50m

$256

ShannonLondon

SNN - LHR

SNNLHR

Shannon

mié. 9/10

9:35 pm-9:20 am

2 stops11h 45m

London Heathrow

mié. 9/17

7:10 pm-8:35 pm

Nonstop1h 25m

$265

ShannonLondon

SNN - LHR

SNNLHR

Shannon

dom. 8/24

9:15 pm-10:40 pm

Nonstop1h 25m

London Heathrow

mar. 8/26

7:10 pm-8:35 pm

Nonstop1h 25m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 20 results
1
2

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 $1,097). 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 agosto 14, 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 at noon, which can drop the price by up to 78% versus a flight in the morning.

Weekly flight availability from Shannon, Clare to London Heathrow Airport

Explore weekly flight availability from Shannon to Heathrow. 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 agosto 14, 2025.

The most flights from SNN to LHR are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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 agosto 14, 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
7.1
Good
1,214 reviews

Crew

8.0

Boarding

7.3

Food

6.5

Overall

7.1

Entertainment

6.9

Comfort

7.1

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
7.1
Good
1,214 reviews
Aer Lingus
7.1
Good
1,214 reviews

Crew

8.0

Boarding

7.3

Food

6.5

Overall

7.1

Entertainment

6.9

Comfort

7.1

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.

  • 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 42% 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: Aer Lingus (83%), Air Canada (83%), British Airways( 83%).

  • 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 $519, 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 $1,097). 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
Thornton Heath
Harrow
Canterbury
Dartford
Dover
Stratford-upon-Avon
Orpington
Watford
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Chelmsford
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Folkestone
Chichester
Swindon

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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.
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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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$97Average$161FlexibilityNo cancel feeOn-timeN/A

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