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Cheap flights from London Heathrow Airport to Knock from £51

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Knock departing on 21/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Knock

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£98Aer Lingus
Wed, 6 May - Fri, 15 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£101Aer Lingus
Tue, 12 May - Wed, 13 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£112Aer Lingus
Sat, 2 May - Wed, 20 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£114Aer Lingus
Thu, 7 May - Mon, 11 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£115Aer Lingus
Thu, 7 May - Mon, 11 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£116Aer Lingus
Tue, 21 Apr - Fri, 24 Apr
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£116Aer Lingus
Tue, 5 May - Fri, 8 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£117Aer Lingus
Sat, 2 May - Sat, 9 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£119Aer Lingus
Thu, 14 May - Thu, 21 May
Aer Lingus Logo
11:05 - 12:35
LHR
-
NOC
1h 30mdirect
Aer Lingus Logo
13:05 - 14:30
NOC
-
LHR
1h 25mdirect
£121Aer Lingus
Sun, 17 May - Sun, 24 May

Aer Lingus flights from London Heathrow Airport to Knock

Our best Aer Lingus deals on London Heathrow Airport to Knock flight tickets
Aer Lingus
6 May
LHR11:05London Heathrow
1h 30m
NOC12:35Knock Intl
15 May
NOC13:05Knock Intl
1h 25m
LHR14:30London Heathrow
£98
Aer Lingus
13 May
LHR11:05London Heathrow
1h 30m
NOC12:35Knock Intl
20 May
NOC13:05Knock Intl
1h 25m
LHR14:30London Heathrow
£100
Aer Lingus
12 May
LHR11:05London Heathrow
1h 30m
NOC12:35Knock Intl
16 May
NOC13:05Knock Intl
1h 25m
LHR14:30London Heathrow
£101

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Knock 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, momondo users made 279,928 searches. Data last updated 3 April 2026.
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 - NOC

LHRNOC

London Heathrow

Wed 6/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 15/5

13:05-14:30

Nonstop1h 25m

£98

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 12/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Wed 13/5

13:05-14:30

Nonstop1h 25m

£101

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Sat 2/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Wed 20/5

13:05-14:30

Nonstop1h 25m

£112

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 7/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 11/5

13:05-14:30

Nonstop1h 25m

£114

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 7/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 11/5

13:05-14:30

Nonstop1h 25m

£115

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 21/4

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 24/4

13:05-14:30

Nonstop1h 25m

£116

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 5/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 8/5

13:05-14:30

Nonstop1h 25m

£116

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Sat 2/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Sat 9/5

13:05-14:30

Nonstop1h 25m

£117

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 14/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Thu 21/5

13:05-14:30

Nonstop1h 25m

£119

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Sun 17/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Sun 24/5

13:05-14:30

Nonstop1h 25m

£121

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Knock from

How to get the cheapest flight ticket from London Heathrow Airport to Knock

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Knock?

What is the cheapest month to fly to Knock?

In general, January is the cheapest month to fly from London Heathrow Airport to Knock. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £107. The month of February is another great option to travel to Knock, with average flight prices from London Heathrow Airport averaging around £122.

What is the cheapest day to depart on your flight to Knock?

Our data shows that Tuesday is the least expensive day to fly to Knock. Tickets to fly out on this day can be as low as £71. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Knock for around £113.

What is the cheapest time of day to depart on your flight to Knock?

Flying to Knock from London Heathrow Airport at midday is the least expensive time of day to depart. momondo users have found prices as low as £62 when looking at flights departing at midday. In the morning is when there is more demand to fly to Knock, so prices are often more expensive at around £101 per ticket.

What is the cheapest London Heathrow to Knock Intl flight route?

Fly from London Heathrow to Knock Intl for the best London Heathrow - Knock Intl flight prices

How far in advance should I book a flight to Knock?

You are more likely to see cheaper flights to Knock from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Knock for around £139 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knock from London Heathrow Airport for as low as £99 on momondo.

What cabin class options are available on London Heathrow to Knock Intl flights?

There is only 1 cabin class available to choose from on London Heathrow to Knock Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Knock flight prices changed over time?

As of April 2026, prices for London Heathrow Airport to Knock flights are approximately 221% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Knock

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Knock according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Knock (LHR to NOC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Knock

Best price found

£69

Fastest flight time

1h 30m

Direct flights

Every day

Airports in Knock

1 airport
The best one-way flight to Knock from London Heathrow Airport in the past 72 hours is £69. The best return flight deal from London Heathrow Airport to Knock found on momondo in the last 72 hours is £126.
The fastest flight from London Heathrow Airport to Knock takes 1h 30m
Direct flights go from London Heathrow Airport to Knock every day.
There is 1 airport in Knock. From London Heathrow Airport there are direct flights to Knock Intl (NOC).
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Knock

  • How far is London Heathrow to Knock Intl by plane?

    There are 388.9 mi between London Heathrow and Knock Intl. In terms of flight time, this usually takes a little over 1h 30m.

  • When did momondo last update prices for flights from London Heathrow Airport to Knock Intl Airport?

    Prices for flights from London Heathrow Airport to Knock Intl Airport were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Knock Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Knock Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Knock Intl Airport.

  • What documentation or ID do you need to fly to Knock Intl Airport?

    The required travel and health documents for your Knock Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Knock Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Knock?

  • What is the most popular airline from London Heathrow Airport to Knock?

Best airlines flying from London Heathrow Airport to Knock

Compare and see reviews for airlines that fly from London Heathrow Airport to Knock with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £93Free CancellationRating
7.2
1,496 reviews
Search Aer Lingus flights

  • Aer Lingus Flights From London Heathrow Airport to Knock

    Aer Lingus flies from London Heathrow Airport to Knock around 7 times per week, with 1,496 momondo users rating the airline 7.2/10. The cheapest Aer Lingus deal from London Heathrow Airport to Knock in the last 72 hours was £93 (round-trip), much lower than the average airfare cost of £143 for Aer Lingus flights on this route.

Travelling to a place near Knock?

Book flights to Knock if you plan to visit one of these locations
Sligo
Westport
Belmullet
Carrick-on-Shannon
Newport

Why use momondo?

Why should I use momondo to find a flight deal from London to Knock?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Knock from London.

Can I find flights from London to Knock with flexible booking policies on momondo?

Yes. All flights to Knock from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Knock?

momondo helps you find the best flight between London and Knock by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Knock right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Knock, momondo offers a useful price alert feature which will track prices for flights to Knock from London and alert you when they change.

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