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Cheap flights from Knock to London Heathrow Airport from £47

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 13/6. Fares are subject to change and may not be available on all flights or dates of travel.
NOC — LHR
12 Jun — 19 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Knock to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Knock to Heathrow
Explore the most affordable flight options available from Knock to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 May 2026.

Tue 9/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Tue 16/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 12/5£87
Thu 11/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Tue 16/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 11/5£90
Thu 18/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Sun 21/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 12/5£92
Sat 6/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Sat 13/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 9/5£93
Sat 6/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Mon 8/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 13/5£94
Sat 6/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Sun 7/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 9/5£94
Thu 11/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Sat 13/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 8/5£97
Fri 19/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Sun 21/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 11/5£101
Wed 10/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Wed 17/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 11/5£102
Thu 4/613:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Sun 7/611:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Deal found 12/5£111

Find flight deals from Knock to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Knock (NOC) 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 13 May 2026.

Round-trip from

£87

One-way from

£47

Popular in

September

Cheapest in

January

Average price

£134
Aer Lingus
  • Aer Lingus
  • 9/6-16/6
  • Nonstop
  • 2h 55m total
  • Knock to London
Search Deals
Aer Lingus
  • Aer Lingus
  • 13/6
  • Nonstop
  • 1h 25m total
  • Knock to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 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 Knock 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 13 May 2026.
Use the filters below to find and compare flights from Knock to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Tue 9/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Tue 16/6

11:05-12:35

Nonstop1h 30m

£87

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Sat 6/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Sun 7/6

11:05-12:35

Nonstop1h 30m

£94

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Sat 6/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Mon 8/6

11:05-12:35

Nonstop1h 30m

£94

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Mon 8/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Mon 15/6

11:05-12:35

Nonstop1h 30m

£112

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Mon 8/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Sat 13/6

11:05-12:35

Nonstop1h 30m

£119

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Fri 5/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Mon 8/6

11:05-12:35

Nonstop1h 30m

£137

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Thu 28/5

13:05-14:30

Nonstop1h 25m

London Heathrow

Sun 31/5

11:05-12:35

Nonstop1h 30m

£148

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Sat 13/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Sat 27/6

19:40-15:30

2 stops19h 50m

£155

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Sat 20/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Sat 20/6

20:10-15:30

2 stops19h 20m

£170

KnockLondon

NOC - LHR

NOCLHR

Knock Intl

Sat 27/6

13:05-14:30

Nonstop1h 25m

London Heathrow

Sat 4/7

11:05-12:35

Nonstop1h 30m

£171

Flights are sorted by cheapest return flights first.

Deals found on 12/5

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Knock to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Knock 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 Knock to London Heathrow Airport

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

Find hourly flight availability from Knock 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 13 May 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Knock to London Heathrow Airport as you normally would.

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 13 May 2026.
Get a feel of what it's like to fly with Aer Lingus from Knock 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
1,556 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Comfort

7.2

Overall

7.3

Crew

8.1

Food

6.6

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
1,556 reviews
Aer Lingus
7.3
Good
1,556 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Comfort

7.2

Overall

7.3

Crew

8.1

Food

6.6

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 Knock 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 Knock to London Heathrow?

    Knock Intl (NOC) is the airport you will fly out of if you book a flight from Knock to London Heathrow. You should not have trouble finding flights to London Heathrow from Knock Intl; the airport handles an average of 2 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Knock airport to London Heathrow. It is only a 9.2 mi journey to Knock Intl (NOC) from Knock’s city center.

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

    A quick flight from Knock to London Heathrow Airport can take about 1h 25m. Aer Lingus provides one of the quickest options available for as low as £87. The distance between Knock and London Heathrow Airport is about 388 mi. All flights are typically direct.

  • What is the cheapest airline to fly from Knock to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Knock to London Heathrow Airport round-trip from £94. Users have found that Aer Lingus is 28% cheaper than the other options available to this destination.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Knock to London Heathrow Airport on time: Qatar Airways (88%), Aer Lingus (88%), British Airways (88%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Knock 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 airline flying from Knock to Heathrow

Discover the top airline that operate flights from Knock 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 13 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£94Average£159FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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

Certainly. Search results for flights to Heathrow from Knock shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Knock 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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