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Cheap flights from London Heathrow Airport to Donegal from €191

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Donegal departing on 4/9. 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 Donegal

Cheap return flights

Logo
06:20 - 14:00LHR-CFN
7h 40m1 stop
Logo
14:30 - 21:40CFN-LHR
7h 10m1 stop
€191
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Thu, 4 Sep - Wed, 10 Sep
Aer Lingus Logo
07:40 - 14:00LHR-CFN
6h 20m1 stop
Aer Lingus Logo
14:30 - 18:20CFN-LHR
3h 50m1 stop
€218Aer Lingus
Find Deal
Tue, 9 Sep - Sat, 13 Sep
Logo
06:30 - 14:00LHR-CFN
7h 30m1 stop
Logo
14:30 - 22:00CFN-LHR
7h 30m1 stop
€227
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Fri, 31 Oct - Mon, 3 Nov
Logo
06:20 - 14:00LHR-CFN
7h 40m1 stop
Logo
07:55 - 12:35CFN-LHR
4h 40m1 stop
€236
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Aer Lingus Logo
07:40 - 14:00LHR-CFN
6h 20m1 stop
Aer Lingus Logo
10:00 - 14:55CFN-LHR
4h 55m1 stop
€280Aer Lingus
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Thu, 28 Aug - Sun, 31 Aug
Aer Lingus Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
Aer Lingus Logo
13:00 - 16:50CFN-LHR
3h 50m1 stop
€281Aer Lingus
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Fri, 16 Jan - Sun, 18 Jan
Logo
20:50 - 14:00LHR-CFN
17h 10m2 stops
Logo
10:00 - 13:55CFN-LHR
3h 55m1 stop
€322
Find Deal
Thu, 28 Aug - Sun, 31 Aug
Logo
06:40 - 20:00LHR-CFN
13h 20m2 stops
Logo
07:55 - 19:55CFN-LHR
12h 00m2 stops
€389
Find Deal
Thu, 4 Sep - Wed, 10 Sep
Aer Lingus Logo
07:40 - 20:00LHR-CFN
12h 20m1 stop
Aer Lingus Logo
10:00 - 09:05CFN-LHR
23h 05m1 stop
€393Aer Lingus
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Thu, 28 Aug - Sun, 31 Aug
Logo
08:50 - 14:00LHR-CFN
5h 10m1 stop
Logo
14:00 - 21:50CFN-LHR
7h 50m1 stop
€397
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Thu, 11 Sep - Wed, 17 Sep

Aer Lingus flights from London Heathrow Airport to Donegal

Our best Aer Lingus deals on London Heathrow Airport to Donegal flight tickets
Aer Lingus
9 Sept
LHR07:40London Heathrow
6h 20m
1 stop
CFN14:00Donegal
13 Sept
CFN14:30Donegal
3h 50m
1 stop
LHR18:20London Heathrow
€218
Find similar
Aer Lingus
28 Aug
LHR07:40London Heathrow
6h 20m
1 stop
CFN14:00Donegal
31 Aug
CFN10:00Donegal
4h 55m
1 stop
LHR14:55London Heathrow
€280
Find similar
Aer Lingus
16 Jan
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
18 Jan
CFN13:00Donegal
3h 50m
1 stop
LHR16:50London Heathrow
€281
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Donegal 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 13,528 searches. Data last updated 3 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 4/9

06:20-14:00

1 stop7h 40m

Donegal

Wed 10/9

14:30-21:40

1 stop7h 10m

€191

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 9/9

07:40-14:00

1 stop6h 20m

Donegal

Sat 13/9

14:30-18:20

1 stop3h 50m

€218

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 31/10

06:30-14:00

1 stop7h 30m

Donegal

Mon 3/11

14:30-22:00

1 stop7h 30m

€227

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 15/9

06:20-14:00

1 stop7h 40m

Donegal

Mon 22/9

07:55-12:35

1 stop4h 40m

€236

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 28/8

07:40-14:00

1 stop6h 20m

Donegal

Sun 31/8

10:00-14:55

1 stop4h 55m

€280

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 16/1

15:10-20:00

1 stop4h 50m

Donegal

Sun 18/1

13:00-16:50

1 stop3h 50m

€281

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 28/8

20:50-14:00

2 stops17h 10m

Donegal

Sun 31/8

10:00-13:55

1 stop3h 55m

€322

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 4/9

06:40-20:00

2 stops13h 20m

Donegal

Wed 10/9

07:55-19:55

2 stops12h 00m

€389

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 28/8

07:40-20:00

1 stop12h 20m

Donegal

Sun 31/8

10:00-09:05

1 stop23h 05m

€393

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 11/9

08:50-14:00

1 stop5h 10m

Donegal

Wed 17/9

14:00-21:50

1 stop7h 50m

€397

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from London Heathrow Airport to Donegal

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

Cheap London Heathrow Airport to Donegal (LHR to CFN) flight deals and tips

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

Best price found

€191

Fastest flight time

4h 10m

Direct flights

None

Airports in Donegal

1 airport
The best flight deal from London Heathrow Airport to Donegal found on momondo in the last 72 hours is €191
The fastest flight from London Heathrow Airport to Donegal takes 4h 10m
There are no direct flights from London Heathrow Airport to Donegal. Popular non-direct route for this connection is London Heathrow Airport - Donegal Airport.
There is 1 airport near Donegal: Donegal (CFN)
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  • How far is London Heathrow to Donegal by plane?

    Donegal is 621.0 km away from London Heathrow. 4h 10m is a normal flight duration for this route.

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

    Prices for flights from London Heathrow Airport to Donegal Airport are updated daily.

  • How old do you have to be to fly from London Heathrow Airport to Donegal 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 stopovers 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 Donegal Airport.

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

    The necessary travel and health documents for your Donegal Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from London Heathrow Airport to Donegal?

    Search flight deals from London Heathrow Airport to Donegal. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from London Heathrow Airport to Donegal with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Travelling to a place near Donegal?

Book flights to Donegal if you plan to visit one of these locations
Letterkenny
Bundoran
Killybegs

Why use momondo?

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

Finding the right flight to Donegal from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Donegal quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Donegal from London with this policy.

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

momondo helps you find the best flight between London and Donegal 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 Donegal right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Donegal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Donegal trip

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