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Cheap flights from London Heathrow Airport to Donegal from €280

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 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Donegal

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
Aer Lingus Logo
10:00 - 16:50CFN-LHR
6h 50m1 stop
€280Aer Lingus
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Thu, 11 Dec - Sun, 14 Dec
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
14:30 - 09:05CFN-LHR
18h 35m1 stop
€314Aer Lingus
Find Deal
Sat, 27 Dec - Sat, 3 Jan
Aer Lingus Logo
07:50 - 20:00LHR-CFN
12h 10m1 stop
Aer Lingus Logo
13:00 - 17:50CFN-LHR
4h 50m1 stop
€317Aer Lingus
Find Deal
Sun, 28 Dec - Sun, 4 Jan
Aer Lingus Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
Aer Lingus Logo
14:30 - 19:50CFN-LHR
5h 20m1 stop
€347Aer Lingus
Find Deal
Fri, 26 Dec - Fri, 2 Jan
Multiple Airlines Logo
14:15 - 20:00LHR-CFN
5h 45m1 stop
Multiple Airlines Logo
19:15 - 08:05CFN-LHR
12h 50m2 stops
€362Multiple Airlines
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Sun, 28 Dec - Sun, 4 Jan
Multiple Airlines Logo
20:45 - 20:00LHR-CFN
23h 15m1 stop
Multiple Airlines Logo
19:15 - 15:30CFN-LHR
20h 15m2 stops
€485Multiple Airlines
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Thu, 11 Dec - Sun, 14 Dec
Multiple Airlines Logo
14:15 - 20:00LHR-CFN
5h 45m1 stop
Multiple Airlines Logo
19:15 - 17:00CFN-LHR
21h 45m3 stops
€487Multiple Airlines
Find Deal
Sun, 28 Dec - Sun, 4 Jan
Multiple Airlines Logo
07:10 - 20:00LHR-CFN
12h 50m2 stops
Multiple Airlines Logo
07:55 - 08:05CFN-LHR
24h 10m1 stop
€496Multiple Airlines
Find Deal
Fri, 26 Dec - Fri, 2 Jan
Multiple Airlines Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
Multiple Airlines Logo
19:15 - 10:45CFN-LHR
15h 30m3 stops
€524Multiple Airlines
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Thu, 11 Dec - Sun, 14 Dec
Loganair Logo
20:20 - 10:10LHR-CFN
37h 50m2 stops
Loganair Logo
19:15 - 15:30CFN-LHR
20h 15m2 stops
€571Loganair
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Wed, 18 Feb - Sun, 22 Feb

Aer Lingus flights from London Heathrow Airport to Donegal

Our best Aer Lingus deals on London Heathrow Airport to Donegal flight tickets
Aer Lingus
11 Dec
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
14 Dec
CFN10:00Donegal
6h 50m
1 stop
LHR16:50London Heathrow
€280
Find similar
Aer Lingus
27 Dec
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
3 Jan
CFN14:30Donegal
18h 35m
1 stop
LHR09:05London Heathrow
€314
Find similar
Aer Lingus
28 Dec
LHR07:50London Heathrow
12h 10m
1 stop
CFN20:00Donegal
4 Jan
CFN13:00Donegal
4h 50m
1 stop
LHR17:50London Heathrow
€317
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 13 November 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 11/12

15:10-20:00

1 stop4h 50m

Donegal

Sun 14/12

10:00-16:50

1 stop6h 50m

€280

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 27/12

07:50-14:00

1 stop6h 10m

Donegal

Sat 3/1

14:30-09:05

1 stop18h 35m

€314

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sun 28/12

07:50-20:00

1 stop12h 10m

Donegal

Sun 4/1

13:00-17:50

1 stop4h 50m

€317

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 26/12

15:10-20:00

1 stop4h 50m

Donegal

Fri 2/1

14:30-19:50

1 stop5h 20m

€347

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sun 28/12

14:15-20:00

1 stop5h 45m

Donegal

Sun 4/1

19:15-08:05

2 stops12h 50m

€362

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 11/12

20:45-20:00

1 stop23h 15m

Donegal

Sun 14/12

19:15-15:30

2 stops20h 15m

€485

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sun 28/12

14:15-20:00

1 stop5h 45m

Donegal

Sun 4/1

19:15-17:00

3 stops21h 45m

€487

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 26/12

07:10-20:00

2 stops12h 50m

Donegal

Fri 2/1

07:55-08:05

1 stop24h 10m

€496

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 11/12

15:10-20:00

1 stop4h 50m

Donegal

Sun 14/12

19:15-10:45

3 stops15h 30m

€524

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 18/2

20:20-10:10

2 stops37h 50m

Donegal

Sun 22/2

19:15-15:30

2 stops20h 15m

€571

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

Direct flights

None
There are no direct flights from London Heathrow Airport to Donegal. There are no popular flight routes from London Heathrow Airport to Donegal.
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  • How far is London Heathrow to Donegal by plane?

    Donegal is 621.0 km away from London Heathrow. 4h 50m 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.

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