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Cheap flights from Limerick to London Heathrow Airport from £43

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORK — LHR
10 Jun — 17 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Limerick to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Limerick to Heathrow
Explore the most affordable flight options available from Limerick to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 May 2026.

Thu 4/621:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Mon 8/619:10
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Deal found 11/5£90
Thu 28/521:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Sun 31/509:50
LHR
-
SNN
Nonstop1h 30m
Aer Lingus
Deal found 11/5£91
Thu 4/621:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Mon 15/619:10
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Deal found 8/5£92
Thu 21/521:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Mon 25/519:10
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Deal found 11/5£93
Mon 8/621:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Tue 9/619:10
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Deal found 10/5£96
Tue 2/621:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Wed 3/619:10
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Deal found 8/5£97
Fri 22/521:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Mon 25/519:10
LHR
-
SNN
Nonstop1h 25m
Aer Lingus
Deal found 9/5£98
Tue 16/621:15
SNN
-
LHR
Nonstop1h 25m
Aer Lingus
Tue 23/614:40
LHR
-
SNN
Nonstop1h 30m
Aer Lingus
Deal found 11/5£105

Find flight deals from Limerick to Heathrow

Keep the following information in mind while searching for Limerick to Heathrow flight deals. Data was last updated 11 May 2026.

Round-trip from

£90

One-way from

£43

Popular in

August

Cheapest in

January

Average price

£137
Aer Lingus
  • Aer Lingus
  • 4/6-8/6
  • Nonstop
  • 2h 50m total
  • Limerick to London
Search Deals
Aer Lingus
  • Aer Lingus
  • 5/6
  • Nonstop
  • 1h 25m total
  • Limerick to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Limerick 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 858,174 searches. Data last updated 11 May 2026.
Use the filters below to find and compare flights from Limerick to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Wed 3/6

21:15-22:40

Nonstop1h 25m

London Heathrow

Wed 24/6

09:55-23:35

2 stops13h 40m

£150
Fastest return journey

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Fri 5/6

21:15-22:40

Nonstop1h 25m

London Heathrow

Sun 7/6

19:10-20:35

Nonstop1h 25m

£217

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Wed 1/7

21:15-22:40

Nonstop1h 25m

London Heathrow

Fri 31/7

19:10-20:35

Nonstop1h 25m

£250

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 30/5

17:25-18:55

Nonstop1h 30m

London Heathrow

Sun 31/5

09:50-11:20

Nonstop1h 30m

£257

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 13/6

12:00-08:15

2 stops20h 15m

London Heathrow

Mon 15/6

19:10-20:35

Nonstop1h 25m

£276

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sun 7/6

21:15-22:40

Nonstop1h 25m

London Heathrow

Mon 8/6

22:15-13:30

2 stops15h 15m

£334

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Thu 11/6

21:15-22:40

Nonstop1h 25m

London Heathrow

Mon 22/6

22:40-13:30

2 stops14h 50m

£381

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Sat 30/5

12:00-17:40

1 stop5h 40m

London Heathrow

Sun 31/5

19:10-20:35

Nonstop1h 25m

£406

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Thu 28/5

07:10-16:15

2 stops9h 05m

London Heathrow

Sun 31/5

06:15-12:00

1 stop5h 45m

£458
Cheapest one-way
Fastest single journey

ShannonLondon

SNN - LHR

SNNLHR

Shannon

Wed 17/6

21:15-22:40

Nonstop1h 25m

£49

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Limerick to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Limerick with our price prediction graph.
Estimated return 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 Limerick to London Heathrow Airport

What is the cheapest time of day to fly from LR9 to LHR?

Find hourly flight availability from Limerick 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 11 May 2026.

When flying from Limerick 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 evening, which can drop the price by up to 69% versus a flight in the morning.

What is the cheapest day to fly from Limerick to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from Limerick to Heathrow. Price data was last updated on 2 May 2026.

Travellers seeking maximum savings on their Limerick to London Heathrow Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Limerick to London Heathrow Airport

Explore weekly flight availability from Limerick 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 11 May 2026.

The most flights from LR9 to LHR are scheduled on a Monday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost for a return flight from Limerick to London Heathrow Airport?

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 11 May 2026.
Read through reviews of airlines operating flights from Limerick to London Heathrow Airport, such as Aer Lingus. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Overall

7.3

Food

6.6

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,551 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Overall

7.3

Food

6.6

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

Find useful and relevant information for your journey from Limerick to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Limerick to London Heathrow Airport?

    Aer Lingus and British Airways can get you from Limerick to London Heathrow Airport in just under 1h 25m. Your travel time will be generally consistent. The distance from Limerick to London Heathrow Airport is about 368 mi. Most flights are nonstop.

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

    Before booking your flight to London Heathrow Airport from Limerick, check out the most reliable airlines to get you to your destination on time: Qatar Airways (89%), Aer Lingus (88%), British Airways( 88%).

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

    While on average a flight from Limerick to London Heathrow Airport is generally £130, our data shows the cheapest flight currently is £49. When looking at the most popular route, (Shannon - London Heathrow), you can expect to pay £93 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Limerick 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Hounslow
Croydon
Wembley
Northampton
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Limerick to Heathrow

Discover the top 2 airlines that operate flights from Limerick 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 858,174 searches. Data last updated 11 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£81Average£160FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£142Average£176FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Limerick to Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from Limerick to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Limerick to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Limerick to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Limerick to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Limerick to Heathrow become cheaper?

Yes! Start tracking prices for Limerick to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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