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Cheap flights from London Heathrow Airport to Donegal from £175

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 17/1. 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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0 bags

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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.
Multiple Airlines Logo
12:50 - 20:00
LHR
-
CFN
7h 10m1 stop
Multiple Airlines Logo
07:55 - 12:30
CFN
-
LHR
4h 35m1 stop
£175Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan
Aer Lingus Logo
09:50 - 14:00
LHR
-
CFN
4h 10m1 stop
Aer Lingus Logo
14:30 - 19:50
CFN
-
LHR
5h 20m1 stop
£188Aer Lingus
Wed, 4 Feb - Wed, 11 Feb
Multiple Airlines Logo
15:15 - 14:00
LHR
-
CFN
22h 45m2 stops
Multiple Airlines Logo
14:30 - 19:50
CFN
-
LHR
5h 20m1 stop
£190Multiple Airlines
Wed, 4 Feb - Wed, 11 Feb
Multiple Airlines Logo
20:50 - 20:00
LHR
-
CFN
23h 10m2 stops
Multiple Airlines Logo
07:55 - 13:25
CFN
-
LHR
5h 30m1 stop
£195Multiple Airlines
Mon, 9 Feb - Mon, 16 Feb
Aer Lingus Logo
08:50 - 14:00
LHR
-
CFN
5h 10m1 stop
Aer Lingus Logo
14:30 - 08:05
CFN
-
LHR
17h 35m1 stop
£196Aer Lingus
Mon, 9 Feb - Mon, 16 Feb
Aer Lingus Logo
08:50 - 14:00
LHR
-
CFN
5h 10m1 stop
Aer Lingus Logo
14:30 - 19:50
CFN
-
LHR
5h 20m1 stop
£201Aer Lingus
Mon, 9 Feb - Mon, 16 Feb
Multiple Airlines Logo
06:30 - 20:00
LHR
-
CFN
13h 30m1 stop
Multiple Airlines Logo
07:55 - 22:00
CFN
-
LHR
14h 05m1 stop
£244Multiple Airlines
Mon, 2 Feb - Wed, 4 Feb
Multiple Airlines Logo
06:40 - 20:00
LHR
-
CFN
13h 20m2 stops
Multiple Airlines Logo
14:30 - 21:05
CFN
-
LHR
6h 35m1 stop
£377Multiple Airlines
Mon, 9 Feb - Mon, 16 Feb
British Airways Logo
18:25 - 20:00
LHR
-
CFN
25h 35m1 stop
British Airways Logo
14:30 - 19:15
CFN
-
LHR
4h 45m1 stop
£391British Airways
Fri, 9 Jan - Mon, 12 Jan
Multiple Airlines Logo
22:35 - 12:35
LHR
-
CFN
14h 00m2 stops
Multiple Airlines Logo
07:55 - 15:35
CFN
-
LHR
7h 40m1 stop
£643Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan

Aer Lingus flights from London Heathrow Airport to Donegal

Our best Aer Lingus deals on London Heathrow Airport to Donegal flight tickets
Aer Lingus
4 Feb
LHR09:50London Heathrow
4h 10m
1 stop
CFN14:00Donegal
11 Feb
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£188
Find similar
Aer Lingus
10 Feb
LHR08:50London Heathrow
5h 10m
1 stop
CFN14:00Donegal
17 Feb
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£191
Find similar
Aer Lingus
9 Feb
LHR08:50London Heathrow
5h 10m
1 stop
CFN14:00Donegal
16 Feb
CFN14:30Donegal
17h 35m
1 stop
LHR08:05London Heathrow
£196
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 279,928 searches. Data last updated 27 December 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

Sat 17/1

12:50-20:00

1 stop7h 10m

Donegal

Sat 24/1

07:55-12:30

1 stop4h 35m

£175

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 4/2

09:50-14:00

1 stop4h 10m

Donegal

Wed 11/2

14:30-19:50

1 stop5h 20m

£188

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 4/2

15:15-14:00

2 stops22h 45m

Donegal

Wed 11/2

14:30-19:50

1 stop5h 20m

£190

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 9/2

20:50-20:00

2 stops23h 10m

Donegal

Mon 16/2

07:55-13:25

1 stop5h 30m

£195

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 9/2

08:50-14:00

1 stop5h 10m

Donegal

Mon 16/2

14:30-08:05

1 stop17h 35m

£196

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 9/2

08:50-14:00

1 stop5h 10m

Donegal

Mon 16/2

14:30-19:50

1 stop5h 20m

£201

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 2/2

06:30-20:00

1 stop13h 30m

Donegal

Wed 4/2

07:55-22:00

1 stop14h 05m

£244

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 9/2

06:40-20:00

2 stops13h 20m

Donegal

Mon 16/2

14:30-21:05

1 stop6h 35m

£377

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 9/1

18:25-20:00

1 stop25h 35m

Donegal

Mon 12/1

14:30-19:15

1 stop4h 45m

£391

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 17/1

22:35-12:35

2 stops14h 00m

Donegal

Sat 24/1

07:55-15:35

1 stop7h 40m

£643

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Donegal from

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

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 cheapest time of day to depart on your flight to Donegal?

Flying to Donegal from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as £273 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Donegal is in the afternoon when prices are around £298.

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

Fastest flight time

5h 10m

Direct flights

None
The fastest flight from London Heathrow Airport to Donegal takes 5h 10m
There are no direct flights from London Heathrow Airport to Donegal. There are no popular flight routes from London Heathrow Airport to Donegal.
Search flight deals

  • How far is London Heathrow to Donegal by plane?

    London Heathrow and Donegal are 385.9 mi apart from one another. In terms of flight time, this usually takes a little over 5h 10m.

  • 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 many operators does momondo search for flights from London Heathrow Airport to Donegal Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 license 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.

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

Best airlines flying from London Heathrow Airport to Donegal

Compare and see reviews for airlines that fly from London Heathrow Airport to Donegal with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £170Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights

Travelling to a place near Donegal?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Donegal. momondo saves you time and could save you money on your trip.

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

All flight searches from London to Donegal on momondo can be filtered to show those which offer flexible booking policies.

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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