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$99+ Cheap flights from Shannon (SNN) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — LHR
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
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The best prices from Shannon to London Heathrow are usually found in January or February, booked 20 days in advance, depart on a Saturday or Monday and return on a Saturday

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 January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$99
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$128
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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High demand for flights, 6% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in January 2025
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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 January 16, 2025.

This Expedia deal was found by Cheapflights users on 1/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/128:05 pmSNN - LHR
Nonstop1h 20mMultiple Airlines
Wed 2/196:05 pmLHR - SNN
Nonstop1h 20mMultiple Airlines
Deal found 1/15$201
This British Airways deal was found by Cheapflights users on 1/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/15:25 pmSNN - LHR
Nonstop1h 25mBritish Airways
Mon 2/310:00 amLHR - SNN
Nonstop1h 30mBritish Airways
Deal found 1/15$255
This Aer Lingus deal was found by Cheapflights users on 1/15. 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.
Tue 4/297:40 amSNN - LHR
Nonstop1h 25mAer Lingus
Tue 4/297:10 pmLHR - SNN
Nonstop1h 25mAer Lingus
Deal found 1/15$447
This United Airlines deal was found by Cheapflights users on 1/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2012:30 pmSNN - LHR
1 stop18h 15mUnited Airlines
Wed 7/2311:05 amLHR - SNN
1 stop20h 25mUnited Airlines
Deal found 1/15$12,615

Find flights from Shannon to Heathrow within your budget

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 January 16, 2025.

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Depart

Return

Price

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sun 2/2

8:30 pm-10:10 am

1 stop13h 40m

London Heathrow

Mon 2/17

6:05 pm-7:25 pm

Nonstop1h 20m

$175

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 2/1

5:25 pm-6:50 pm

Nonstop1h 25m

London Heathrow

Mon 2/3

10:00 am-11:30 am

Nonstop1h 30m

$255

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Tue 4/29

7:40 am-9:05 am

Nonstop1h 25m

London Heathrow

Tue 4/29

7:10 pm-8:35 pm

Nonstop1h 25m

$447

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Thu 5/29

12:30 pm-7:15 am

1 stop18h 45m

London Heathrow

Fri 6/13

8:30 am-7:30 am

1 stop23h 00m

$12,707

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sun 6/22

7:40 am-9:05 am

Nonstop1h 25m

$112

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Mon 6/23

4:05 pm-8:45 pm

1 stop4h 40m

$119

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Tue 2/4

2:45 pm-5:55 am

1 stop15h 10m

$967

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Mon 7/7

9:30 am-6:20 am

1 stop20h 50m

$4,341

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

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 January.
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-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-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Shannon-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon-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-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.

Travel insights for flights from Shannon to Heathrow

Get recent, data-driven insights about flights from Shannon to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Shannon to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Shannon to Heathrow. Price data was last updated on January 10, 2025.

To ensure you get the cheapest price possible for a flight from Shannon to London Heathrow Airport, you should look to book at least 20 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from Shannon to London Heathrow Airport (average of $661). Flying from Shannon to London Heathrow Airport in June is currently the most expensive (average of $1,137). 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 January 16, 2025.

When flying from Shannon 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 17% versus a flight at noon.

Weekly flight availability from Shannon 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 January 16, 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).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 January 16, 2025.
JetBlue
7.4
Good
3,199 reviews

Overall

7.4

Boarding

7.6

Food

6.9

Crew

8.1

Entertainment

7.4

Comfort

7.7

Reviews

1 / 10

Flight canceled, returned to NY and waiting for the new one. Thanks

JetBlue
7.4
Good
3,199 reviews
JetBlue
7.4
Good
3,199 reviews

Overall

7.4

Boarding

7.6

Food

6.9

Crew

8.1

Entertainment

7.4

Comfort

7.7

Reviews

1 / 10

Flight canceled, returned to NY and waiting for the new one. Thanks

United Airlines
7.4
Good
8,965 reviews
JetBlue
7.4
Good
3,199 reviews

Overall

7.4

Boarding

7.6

Food

6.9

Crew

8.1

Entertainment

7.4

Comfort

7.7

Reviews

1 / 10

Flight canceled, returned to NY and waiting for the new one. Thanks

Aer Lingus
7.1
Good
1,077 reviews
JetBlue
7.4
Good
3,199 reviews

Overall

7.4

Boarding

7.6

Food

6.9

Crew

8.1

Entertainment

7.4

Comfort

7.7

Reviews

1 / 10

Flight canceled, returned to NY and waiting for the new one. Thanks

British Airways
6.6
Okay
6,823 reviews
JetBlue
7.4
Good
3,199 reviews

Overall

7.4

Boarding

7.6

Food

6.9

Crew

8.1

Entertainment

7.4

Comfort

7.7

Reviews

1 / 10

Flight canceled, returned to NY and waiting for the new one. Thanks

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 are the cheapest airlines flying from Shannon to London Heathrow Airport round-trip?

    Aer Lingus, at $99, was found to be the cheapest airline from Shannon to London Heathrow Airport. An alternate airline flying to your destination would be British Airways. Users have found that Aer Lingus is 39% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Shannon to London Heathrow Airport one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as $112. However, be on the lookout for offers from JetBlue and United Airlines, as they are both options that can get you from Shannon to London Heathrow Airport for a low price.

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

    Before booking your flight to London Heathrow Airport from Shannon, check out the most reliable airlines to get you to your destination on time: Qatar Airways (45%), Aer Lingus (45%), British Airways( 45%).

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

    Looking for the cheapest flight from Shannon to London Heathrow Airport? While on average our users pay $463, our data indicates the cheapest price to be $59. 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 to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Shannon to London Heathrow Airport (average of $661). Flying from Shannon to London Heathrow Airport in June is currently the most expensive (average of $1,137). 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 Shannon?

Book flights to Shannon if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
Northampton
Gatwick
Horley
Milton Keynes
Dover
Watford
Orpington
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

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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 January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$123Average$172FlexibilityNo cancel feeOn-timeN/A
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