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Cheap flights from London to Donegal from £64

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 10/9. 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
06:35 - 20:00STN  London Stansted-CFN Donegal
13h 25m1 stop Dublin
Multiple Airlines Logo
07:55 - 17:35CFN  Donegal-STN London Stansted
9h 40m1 stop Dublin
£111Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
16:15 - 20:00STN  London Stansted-CFN Donegal
3h 45m1 stop Dublin
Multiple Airlines Logo
07:55 - 12:50CFN  Donegal-STN London Stansted
4h 55m1 stop Dublin
£112Multiple Airlines
Sat, 12 Sep - Tue, 15 Sep
Multiple Airlines Logo
06:30 - 14:00STN  London Stansted-CFN Donegal
7h 30m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:20CFN  Donegal-STN London Stansted
7h 50m1 stop Dublin
£114Multiple Airlines
Thu, 17 Sep - Wed, 23 Sep
Multiple Airlines Logo
08:50 - 20:00LGW  London Gatwick-CFN Donegal
11h 10m1 stop Dublin
Multiple Airlines Logo
07:55 - 18:55CFN  Donegal-LGW London Gatwick
11h 00m1 stop Dublin
£114Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
06:30 - 14:00STN  London Stansted-CFN Donegal
7h 30m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:20CFN  Donegal-STN London Stansted
7h 50m1 stop Dublin
£116Multiple Airlines
Thu, 17 Sep - Wed, 23 Sep
Multiple Airlines Logo
14:25 - 20:00LTN  London Luton-CFN Donegal
5h 35m1 stop Dublin
Multiple Airlines Logo
14:30 - 00:30CFN  Donegal-LTN London Luton
10h 00m1 stop Dublin
£117Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
13:15 - 20:00STN  London Stansted-CFN Donegal
6h 45m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:20CFN  Donegal-STN London Stansted
7h 50m1 stop Dublin
£117Multiple Airlines
Thu, 17 Sep - Wed, 23 Sep
Multiple Airlines Logo
06:30 - 14:00STN  London Stansted-CFN Donegal
7h 30m1 stop Dublin
Multiple Airlines Logo
14:30 - 22:20CFN  Donegal-STN London Stansted
7h 50m1 stop Dublin
£118Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
08:50 - 14:00LGW  London Gatwick-CFN Donegal
5h 10m1 stop Dublin
Multiple Airlines Logo
14:30 - 20:05CFN  Donegal-LGW London Gatwick
5h 35m1 stop Dublin
£118Multiple Airlines
Sat, 5 Sep - Tue, 8 Sep
Multiple Airlines Logo
14:25 - 20:00LTN  London Luton-CFN Donegal
5h 35m1 stop Dublin
Multiple Airlines Logo
07:55 - 12:45CFN  Donegal-LTN London Luton
4h 50m1 stop Dublin
£119Multiple Airlines
Sat, 5 Sep - Tue, 8 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
17 Sept
LHR14:20London Heathrow
5h 40m
1 stop
CFN20:00Donegal
23 Sept
CFN07:55Donegal
8h 05m
1 stop
LHR16:00London Heathrow
£188
Aer Lingus
17 Sept
LHR14:20London Heathrow
5h 40m
1 stop
CFN20:00Donegal
23 Sept
CFN07:55Donegal
8h 05m
1 stop
LHR16:00London Heathrow
£188
Aer Lingus
18 Sept
LHR16:50London Heathrow
21h 10m
1 stop
CFN14:00Donegal
21 Sept
CFN14:30Donegal
4h 25m
1 stop
LHR18:55London Heathrow
£205

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
30 Sept
LHR06:15London Heathrow
7h 45m
1 stop
CFN14:00Donegal
7 Oct
CFN14:30Donegal
7h 15m
1 stop
LHR21:45London Heathrow
£380
British Airways
14 Oct
LHR06:15London Heathrow
7h 45m
1 stop
CFN14:00Donegal
18 Oct
CFN14:30Donegal
21h 30m
1 stop
LHR12:00London Heathrow
£387
British Airways
14 Oct
LHR06:15London Heathrow
7h 45m
1 stop
CFN14:00Donegal
18 Oct
CFN14:30Donegal
21h 30m
1 stop
LHR12:00London Heathrow
£388

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 16 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

Sat 19/9

06:35-20:00

1 stop13h 25m

Donegal

Sat 26/9

07:55-17:35

1 stop9h 40m

£111
Fastest return journey

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Sat 12/9

16:15-20:00

1 stop3h 45m

Donegal

Tue 15/9

07:55-12:50

1 stop4h 55m

£112

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Thu 17/9

06:30-14:00

1 stop7h 30m

Donegal

Wed 23/9

14:30-22:20

1 stop7h 50m

£114

LondonDonegal

LGW London Gatwick - CFN Donegal

LGWCFN

London Gatwick

Sat 19/9

08:50-20:00

1 stop11h 10m

Donegal

Sat 26/9

07:55-18:55

1 stop11h 00m

£114

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Thu 17/9

06:30-14:00

1 stop7h 30m

Donegal

Wed 23/9

14:30-22:20

1 stop7h 50m

£116

LondonDonegal

LTN London Luton - CFN Donegal

LTNCFN

London Luton

Sat 19/9

14:25-20:00

1 stop5h 35m

Donegal

Sat 26/9

14:30-00:30

1 stop10h 00m

£117

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Thu 17/9

13:15-20:00

1 stop6h 45m

Donegal

Wed 23/9

14:30-22:20

1 stop7h 50m

£117

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Mon 28/9

06:30-14:00

1 stop7h 30m

Donegal

Mon 5/10

14:30-22:20

1 stop7h 50m

£118

LondonDonegal

LGW London Gatwick - CFN Donegal

LGWCFN

London Gatwick

Sat 5/9

08:50-14:00

1 stop5h 10m

Donegal

Tue 8/9

14:30-20:05

1 stop5h 35m

£118

LondonDonegal

LTN London Luton - CFN Donegal

LTNCFN

London Luton

Sat 5/9

14:25-20:00

1 stop5h 35m

Donegal

Tue 8/9

07:55-12:45

1 stop4h 50m

£119

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.
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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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