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Cheap flights from London Heathrow Airport to Knock from £48

LHR — NOC
25 Sep — 2 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Knock Intl are usually found in January or February, booked 46 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from Heathrow to Knock

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Knock

Fri 9/1011:05 -
Nonstop1h 30m
Fri 16/1013:05 -
Nonstop1h 25m
Deal found 25/8£81
Sat 19/911:05 -
Nonstop1h 30m
Sat 26/913:05 -
Nonstop1h 25m
Deal found 22/8£92
Tue 22/911:05 -
Nonstop1h 30m
Sat 26/913:05 -
Nonstop1h 25m
Deal found 21/8£93
Thu 10/911:05 -
Nonstop1h 30m
Fri 11/913:05 -
Nonstop1h 25m
Deal found 24/8£94
Tue 8/911:05 -
Nonstop1h 30m
Fri 11/913:05 -
Nonstop1h 25m
Deal found 22/8£95
Sat 19/911:05 -
Nonstop1h 30m
Tue 29/913:05 -
Nonstop1h 25m
Deal found 21/8£95
Sat 17/1011:05 -
Nonstop1h 30m
Fri 23/1013:05 -
Nonstop1h 25m
Deal found 25/8£97
Thu 22/1011:05 -
Nonstop1h 30m
Sun 25/1013:00 -
Nonstop1h 30m
Deal found 25/8£98
Tue 22/911:05 -
Nonstop1h 30m
Tue 29/913:05 -
Nonstop1h 25m
Deal found 22/8£101
Tue 8/911:05 -
Nonstop1h 30m
Sat 12/913:05 -
Nonstop1h 25m
Deal found 25/8£103

Find flight deals from Heathrow to Knock

Round-trip from

£92

One-way from

£48

Popular in

August

Cheapest in

January

Average price

£168

Good round-trip deal

£124 or less

Good one-way deal

£49 or less
Aer Lingus
  • Aer Lingus
  • 19/9-26/9
  • Nonstop
  • 2h 55m total
  • London to Knock
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Aer Lingus
  • Aer Lingus
  • 1/9
  • Nonstop
  • 1h 30m total
  • London to Knock
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£12 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from London Heathrow to Knock Intl.
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Price to beat on a one-way flight from London Heathrow to Knock Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Knock that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Tue 8/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 11/9

13:05-14:30

Nonstop1h 25m

£95

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Wed 14/10

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 19/10

13:05-14:30

Nonstop1h 25m

£132

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Wed 7/10

11:05-12:35

Nonstop1h 30m

Knock Intl

Wed 14/10

13:05-14:30

Nonstop1h 25m

£134

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Thu 17/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 21/9

13:05-14:30

Nonstop1h 25m

£143

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Thu 17/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 21/9

17:55-08:05

2 stops14h 10m

£153

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Tue 8/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 11/9

10:40-22:40

2 stops12h 00m

£158

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Tue 15/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Sun 20/9

15:40-08:05

2 stops16h 25m

£183

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Fri 18/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 25/9

10:40-22:40

2 stops12h 00m

£190

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Sat 12/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Sun 13/9

18:35-11:10

2 stops16h 35m

£213

LondonKnock

LHR London Heathrow - NOC Knock Intl

LHRNOC

London Heathrow

Mon 7/9

11:05-12:35

Nonstop1h 30m

Knock Intl

Thu 10/9

13:05-14:30

Nonstop1h 25m

£228

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Knock

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Knock

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

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Knock, you should look to book at least 44 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 London Heathrow Airport to Knock?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Knock (average of £100). Flying from London Heathrow Airport to Knock in August is currently the most expensive (average of £168). 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 LHR to NOC?

When flying from London Heathrow Airport to Knock, 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 for a return flight from London Heathrow Airport to Knock?

Airfare is below average for this route at the moment.

London Heathrow Airport to Knock flights typically cost between £119 and £178 in October.
The cheapest return price found within the last 5 days was £81 on Aer Lingus (9 Oct–16 Oct).

Reviews of airlines servicing Knock

Check out reviews from past customers who have flown with Aer Lingus from London Heathrow Airport to Knock to help guide your decision. 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
1,728 reviews
Check prices

Boarding

7.5

Overall

7.3

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.3
Good
1,728 reviews
Aer Lingus
7.3
Good
1,728 reviews
Check prices

Boarding

7.5

Overall

7.3

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

  • What airport do you fly into for flights to Knock from London Heathrow?

    Located just 9.2 mi from the city center, Knock Intl is the airport most travelers will use when flying to Knock from London Heathrow. Booking flights from London Heathrow to Knock Intl (NOC) should be relatively easy as there are 3 daily inbound flights from London Heathrow from 1 airline.

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

    Aer Lingus can get you from London Heathrow Airport to Knock in just under 1h 30m. Your travel time will be generally consistent. The distance between London Heathrow Airport and Knock is about 388 mi. All flights are typically direct.

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

    Cheapflights users have booked flights from London Heathrow Airport to Knock round-trip from £94. Users have found that Aer Lingus is 31% cheaper than the other options available to this destination.

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

    Before booking your flight to Knock from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Qatar Airways (93%), Aer Lingus (93%), British Airways( 93%).

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

    Looking for the cheapest flight from London Heathrow Airport to Knock? While on average our users pay £115, our data indicates the cheapest price to be £49. The most popular route (London Heathrow - Knock Intl), is priced around £91.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Knock 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 London Heathrow Airport to Knock?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Knock (average of £100). Flying from London Heathrow Airport to Knock in August is currently the most expensive (average of £168). 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

Travelling to a place near Knock?

Book flights to Knock if you plan to visit one of these locations
Westport
Newport

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Top airline flying from Heathrow to Knock

AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£94Average£139FlexibilityNo cancel feeOn-timeN/A
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