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Cheap flights from London Heathrow Airport to Knock from £48

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — NOC
12 May — 19 May1
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 57 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap flight deals from Heathrow to Knock

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Knock
Explore the most affordable flight options available from Heathrow to Knock. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 April 2026.

Tue 21/411:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Tue 12/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 7/4£90
Tue 5/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Tue 12/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 7/4£97
Wed 6/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Wed 13/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 8/4£98
Thu 7/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Mon 11/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 8/4£108
Wed 6/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Tue 19/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 11/4£109
Sat 9/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Tue 12/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 11/4£113
Tue 21/411:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Fri 24/413:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 7/4£114
Sat 11/411:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Wed 15/413:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 8/4£114
Wed 20/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Sat 23/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 7/4£115
Tue 5/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Wed 6/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 10/4£116
Sat 9/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Sat 16/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 11/4£119
Mon 11/511:05
LHR
-
NOC
Nonstop1h 30m
Aer Lingus
Mon 18/513:05
NOC
-
LHR
Nonstop1h 25m
Aer Lingus
Deal found 11/4£120

Find flight deals from Heathrow to Knock

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Knock (NOC). 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 12 April 2026.

Round-trip from

£90

One-way from

£48

Popular in

May

Cheapest in

January

Average price

£131

Good round-trip deal

£122 or less

Good one-way deal

£74 or less
Aer Lingus
  • Aer Lingus
  • 21/4-12/5
  • Nonstop
  • 2h 55m total
  • London to Knock
Search Deals
Aer Lingus
  • Aer Lingus
  • 21/4
  • Nonstop
  • 1h 30m total
  • London to Knock
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£4 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Knock Intl.
Search Deals
Price to beat on a one-way flight from London Heathrow to Knock Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 12 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

Fri 19/6

11:05-12:35

Nonstop1h 30m

Knock Intl

Sun 21/6

13:05-14:30

Nonstop1h 25m

£128

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 21/4

11:05-12:35

Nonstop1h 30m

Knock Intl

Sun 26/4

15:40-10:20

2 stops18h 40m

£154

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Mon 27/4

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 1/5

09:50-22:40

2 stops12h 50m

£209

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 6/8

11:05-12:35

Nonstop1h 30m

Knock Intl

Wed 12/8

13:05-14:30

Nonstop1h 25m

£211

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 16/7

11:05-12:35

Nonstop1h 30m

Knock Intl

Mon 20/7

13:05-14:30

Nonstop1h 25m

£221

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Sat 25/4

11:05-12:35

Nonstop1h 30m

Knock Intl

Thu 30/4

13:05-14:30

Nonstop1h 25m

£221

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Thu 6/8

11:05-12:35

Nonstop1h 30m

Knock Intl

Wed 12/8

13:05-14:30

Nonstop1h 25m

£224

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Mon 11/5

11:05-12:35

Nonstop1h 30m

Knock Intl

Fri 15/5

13:05-14:30

Nonstop1h 25m

£224

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 21/4

11:05-12:35

Nonstop1h 30m

Knock Intl

Sat 25/4

13:05-14:30

Nonstop1h 25m

£224
Cheapest one-way
Fastest single journey

LondonKnock

LHR - NOC

LHRNOC

London Heathrow

Tue 21/4

11:05-12:35

Nonstop1h 30m

£48

Flights are sorted by cheapest return flights first.

Deals found on 7/4

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

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
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 London Heathrow Airport to Knock

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Knock. Price data was last updated on 10 April 2026.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Knock, you should look to book at least 57 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 £32). Flying from London Heathrow Airport to Knock in August is currently the most expensive (average of £107). 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?

Find hourly flight availability from Heathrow to Knock. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 April 2026.

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?

Reviews of airlines servicing Knock

Get insights into the airlines that provide service to Knock. 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 Knock. Reviews last updated 12 April 2026.
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
7.2
Good
1,502 reviews
Check prices

Overall

7.2

Food

6.6

Comfort

7.2

Entertainment

7.0

Crew

8.1

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.
Aer Lingus
7.2
Good
1,502 reviews
Aer Lingus
7.2
Good
1,502 reviews
Check prices

Overall

7.2

Food

6.6

Comfort

7.2

Entertainment

7.0

Crew

8.1

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Knock. 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 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 £91. Users have found that Aer Lingus is 33% 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 (86%), Aer Lingus (86%), British Airways( 86%).

  • 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 £119, our data indicates the cheapest price to be £69. The most popular route (London Heathrow - Knock Intl), is priced around £116.

  • 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 £32). Flying from London Heathrow Airport to Knock in August is currently the most expensive (average of £107). 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

Discover the top airline that operate flights from Heathrow to Knock. 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 12 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£91Average£141FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Heathrow to Knock via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Knock 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 Heathrow to Knock with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Knock, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Heathrow to Knock and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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