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Cheap flights from London to Donegal from £57

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 to Donegal departing on 3/9. 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
1 adult, Economy, 0 bags

Find the cheapest flights from London to Donegal

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
08:30 - 20:00STN  London Stansted-CFN Donegal
11h 30m1 stop Dublin
Multiple Airlines Logo
07:55 - 17:05CFN  Donegal-STN London Stansted
9h 10m1 stop Dublin
£108Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
09:40 - 20:00LGW  London Gatwick-CFN Donegal
10h 20m1 stop Dublin
Multiple Airlines Logo
07:55 - 19:30CFN  Donegal-LGW London Gatwick
11h 35m1 stop Dublin
£109Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
06:15 - 14:00LTN  London Luton-CFN Donegal
7h 45m1 stop Dublin
Multiple Airlines Logo
14:30 - 21:15CFN  Donegal-LTN London Luton
6h 45m1 stop Dublin
£114Multiple Airlines
Wed, 2 Sep - Thu, 3 Sep
Multiple Airlines Logo
12:00 - 20:00STN  London Stansted-CFN Donegal
8h 00m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:20CFN  Donegal-STN London Stansted
7h 50m1 stop Dublin
£115Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Multiple Airlines Logo
14:45 - 20:00LGW  London Gatwick-CFN Donegal
5h 15m1 stop Dublin
Multiple Airlines Logo
07:55 - 12:45CFN  Donegal-LGW London Gatwick
4h 50m1 stop Dublin
£116Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Multiple Airlines Logo
09:45 - 14:00LGW  London Gatwick-CFN Donegal
4h 15m1 stop Dublin
Multiple Airlines Logo
14:30 - 18:25CFN  Donegal-LGW London Gatwick
3h 55m1 stop Dublin
£117Multiple Airlines
Wed, 2 Sep - Thu, 3 Sep
Multiple Airlines Logo
06:30 - 14:00STN  London Stansted-CFN Donegal
7h 30m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:25CFN  Donegal-STN London Stansted
7h 55m1 stop Dublin
£117Multiple Airlines
Mon, 28 Sep - Fri, 2 Oct
Multiple Airlines Logo
13:55 - 20:00STN  London Stansted-CFN Donegal
6h 05m1 stop Dublin
Multiple Airlines Logo
08:00 - 22:10CFN  Donegal-STN London Stansted
14h 10m1 stop Dublin
£120Multiple Airlines
Fri, 30 Oct - Mon, 2 Nov
Multiple Airlines Logo
16:10 - 20:00LTN  London Luton-CFN Donegal
3h 50m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:50CFN  Donegal-LTN London Luton
8h 20m1 stop Dublin
£121Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
15:50 - 20:00LTN  London Luton-CFN Donegal
4h 10m1 stop Dublin
Multiple Airlines Logo
07:55 - 13:25CFN  Donegal-LTN London Luton
5h 30m1 stop Dublin
£122Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep

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Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
22 Sept
LHR07:40London Heathrow
6h 20m
1 stop
CFN14:00Donegal
29 Sept
CFN14:30Donegal
5h 50m
1 stop
LHR20:20London Heathrow
£182
Aer Lingus
17 Sept
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
21 Sept
CFN14:30Donegal
4h 55m
1 stop
LHR19:25London Heathrow
£190
Aer Lingus
17 Sept
LHR13:25London Heathrow
6h 35m
1 stop
CFN20:00Donegal
23 Sept
CFN07:55Donegal
4h 45m
1 stop
LHR12:40London Heathrow
£193

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
12 Oct
LHR06:20London Heathrow
7h 40m
1 stop
CFN14:00Donegal
16 Oct
CFN14:30Donegal
6h 55m
1 stop
LHR21:25London Heathrow
£390
British Airways
12 Oct
LHR06:20London Heathrow
7h 40m
1 stop
CFN14:00Donegal
16 Oct
CFN14:30Donegal
6h 55m
1 stop
LHR21:25London Heathrow
£391
British Airways
30 Nov
LHR06:30London Heathrow
7h 30m
1 stop
CFN14:00Donegal
3 Dec
CFN08:00Donegal
6h 35m
1 stop
LHR14:35London Heathrow
£399

momondo Fare Finder

 
Customise your flight search to find flights from London 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 9 August 2026.
Use the filters below to find and compare flights from London to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Tue 1/9

08:30-20:00

1 stop11h 30m

Donegal

Tue 8/9

07:55-17:05

1 stop9h 10m

£108

LondonDonegal

LGW London Gatwick - CFN Donegal

LGWCFN

London Gatwick

Tue 1/9

09:40-20:00

1 stop10h 20m

Donegal

Tue 8/9

07:55-19:30

1 stop11h 35m

£109

LondonDonegal

LTN London Luton - CFN Donegal

LTNCFN

London Luton

Wed 2/9

06:15-14:00

1 stop7h 45m

Donegal

Thu 3/9

14:30-21:15

1 stop6h 45m

£114

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Thu 17/9

12:00-20:00

1 stop8h 00m

Donegal

Mon 21/9

14:30-22:20

1 stop7h 50m

£115

LondonDonegal

LGW London Gatwick - CFN Donegal

LGWCFN

London Gatwick

Thu 17/9

14:45-20:00

1 stop5h 15m

Donegal

Mon 21/9

07:55-12:45

1 stop4h 50m

£116
Fastest return journey

LondonDonegal

LGW London Gatwick - CFN Donegal

LGWCFN

London Gatwick

Wed 2/9

09:45-14:00

1 stop4h 15m

Donegal

Thu 3/9

14:30-18:25

1 stop3h 55m

£117

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Mon 28/9

06:30-14:00

1 stop7h 30m

Donegal

Fri 2/10

14:30-22:25

1 stop7h 55m

£117

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Fri 30/10

13:55-20:00

1 stop6h 05m

Donegal

Mon 2/11

08:00-22:10

1 stop14h 10m

£120

LondonDonegal

LTN London Luton - CFN Donegal

LTNCFN

London Luton

Tue 1/9

16:10-20:00

1 stop3h 50m

Donegal

Tue 8/9

14:30-22:50

1 stop8h 20m

£121

LondonDonegal

LTN London Luton - CFN Donegal

LTNCFN

London Luton

Thu 17/9

15:50-20:00

1 stop4h 10m

Donegal

Mon 21/9

07:55-13:25

1 stop5h 30m

£122

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Donegal from

How to get the cheapest flight ticket from London 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 airline that flies from London to Donegal?

Aer Lingus is the most popular carrier operating from London to Donegal

When to book flights from London to Donegal

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

Cheap London to Donegal (LON to CFN) flight deals and tips

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

Fastest flight time

3h 55m

Direct flights

None
The fastest flight from London to Donegal takes 3h 55m
There are no direct flights from London to Donegal. There are no popular flight routes from London to Donegal.
Search flight deals

Frequently asked questions about flying from London to Donegal

  • How far is London to Donegal by plane?

    There are 396.1 mi between London and Donegal. Flights usually cover this in 3h 55m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London to Donegal Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Donegal Airport.

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

    The required travel and health documents for your Donegal 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 Donegal Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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?

It is quick and easy to find London to Donegal flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Donegal that suits you.

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 offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Donegal.

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

Price alerts on flights to Donegal from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Donegal trip

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