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Heathrow

$61+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — LHR
Sep 8 — Sep 151
Tue 9/8
Tue 9/15
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 August 9, 2026.

This Booking.com deal was found by Cheapflights users on 8/5. 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.
Tue 9/224:50 pm -
Nonstop1h 30m
Wed 9/307:10 pm -
Nonstop1h 25m
Deal found 8/5$123
This Booking.com deal was found by Cheapflights users on 8/9. 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.
Wed 9/99:15 pm -
Nonstop1h 25m
Wed 9/307:10 pm -
Nonstop1h 25m
Deal found 8/9$124
This Booking.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/49:15 pm -
Nonstop1h 25m
Fri 9/117:10 pm -
Nonstop1h 25m
Deal found 8/7$125
This Booking.com deal was found by Cheapflights users on 8/6. 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.
Mon 9/289:15 pm -
Nonstop1h 25m
Wed 9/307:10 pm -
Nonstop1h 25m
Deal found 8/6$127
This Booking.com deal was found by Cheapflights users on 8/6. 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.
Tue 9/229:15 pm -
Nonstop1h 25m
Thu 9/247:10 pm -
Nonstop1h 25m
Deal found 8/6$128
This Booking.com deal was found by Cheapflights users on 8/9. 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.
Sat 9/54:50 pm -
Nonstop1h 30m
Mon 9/77:10 pm -
Nonstop1h 25m
Deal found 8/9$145
This Mytrip deal was found by Cheapflights users on 8/7. 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.
Mon 8/109:15 pm -
Nonstop1h 25m
Fri 9/117:10 pm -
Nonstop1h 25m
Deal found 8/7$147
This Booking.com deal was found by Cheapflights users on 8/5. 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.
Thu 9/179:15 pm -
Nonstop1h 25m
Sun 9/209:50 am -
Nonstop1h 30m
Deal found 8/5$149
This Booking.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/149:15 pm -
Nonstop1h 25m
Thu 9/179:50 am -
Nonstop1h 30m
Deal found 8/7$169
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 9/224:50 pm -
Nonstop1h 30m
Wed 9/309:55 am -
2 stops13h 40m
Deal found 8/6$179

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 August 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$123
(Booking.com)

One-way from

$61
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$174

Good round-trip deal

$176 or less

Good one-way deal

$89 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
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Shannon to London Heathrow.
Search Deals
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 August 9, 2026.
Use the filters below to find and compare flights from Shannon to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Fri 9/11

7:30 am-9:05 am

Nonstop1h 35m

London Heathrow

Mon 9/14

7:10 pm-8:35 pm

Nonstop1h 25m

$294

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Thu 9/17

4:50 pm-6:20 pm

Nonstop1h 30m

London Heathrow

Sun 9/20

2:35 pm-4:05 pm

Nonstop1h 30m

$294

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Sat 9/12

7:30 am-9:05 am

Nonstop1h 35m

London Heathrow

Sun 9/13

7:10 pm-8:35 pm

Nonstop1h 25m

$294
Quickest round-trip

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Thu 9/24

9:15 pm-10:40 pm

Nonstop1h 25m

London Heathrow

Mon 9/28

7:10 pm-8:35 pm

Nonstop1h 25m

$295

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Fri 12/4

5:30 pm-6:55 pm

Nonstop1h 25m

London Heathrow

Sat 12/5

10:00 am-11:30 am

Nonstop1h 30m

$295

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Wed 8/19

4:50 pm-6:20 pm

Nonstop1h 30m

London Heathrow

Fri 8/21

9:50 am-11:20 am

Nonstop1h 30m

$958

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Wed 8/19

9:15 pm-10:40 pm

Nonstop1h 25m

London Heathrow

Sun 8/23

2:35 pm-4:05 pm

Nonstop1h 30m

$959

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Wed 8/26

4:50 pm-6:20 pm

Nonstop1h 30m

London Heathrow

Sun 8/30

2:35 pm-4:05 pm

Nonstop1h 30m

$960

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Mon 9/7

7:30 am-9:05 am

Nonstop1h 35m

London Heathrow

Wed 9/9

7:10 pm-8:35 pm

Nonstop1h 25m

$962

ShannonLondon

SNN Shannon - LHR London Heathrow

SNNLHR

Shannon

Fri 9/11

9:15 pm-10:40 pm

Nonstop1h 25m

London Heathrow

Sun 9/13

9:50 am-11:20 am

Nonstop1h 30m

$963

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/8

Showing 1-10 of 16 resultsSorted by cheapest first
1
2
  • 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, January is the cheapest month in which you can book a flight from Shannon, Clare to London Heathrow Airport (average of $153). Flying from Shannon, Clare to London Heathrow Airport in June is currently the most expensive (average of $215). 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 August 9, 2026.

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.

How much does it cost to fly round-trip from Shannon, Clare to London Heathrow Airport?

Airfare is below average for this route at the moment.

Shannon, Clare to London Heathrow Airport flights typically cost between $127 and $258 in September.
The cheapest round-trip price found within the last 5 days was $123 on Aer Lingus (Sep 22-Sep 30).

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 August 9, 2026.
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
7.3
Good
1,693 reviews

Overall

7.3

Comfort

7.2

Crew

8.1

Food

6.7

Entertainment

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.3
Good
1,693 reviews
Aer Lingus
7.3
Good
1,693 reviews

Overall

7.3

Comfort

7.2

Crew

8.1

Food

6.7

Entertainment

7.0

Boarding

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

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 12 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 35m. Fly via British Airways 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 $125 on this airline. Aer Lingus is priced at 30% 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 (95%), American Airlines (93%), Qatar Airways( 90%).

  • 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 $426, our data indicates the cheapest price to be $66. The most popular route (Shannon - London Heathrow), is priced around $14,062.

  • 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, January is the cheapest month in which you can book a flight from Shannon, Clare to London Heathrow Airport (average of $153). Flying from Shannon, Clare to London Heathrow Airport in June is currently the most expensive (average of $215). 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
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Northampton
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton

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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 Gatwick flights
Dublin to Heathrow 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 August 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$125Average$166FlexibilityNo cancel feeOn-timeN/A

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