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Cheap flights from London to Donegal from €75

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
06:30 - 20:00STN  London Stansted-CFN Donegal
13h 30m1 stop Dublin
Multiple Airlines Logo
07:55 - 19:35CFN  Donegal-STN London Stansted
11h 40m1 stop Dublin
€126Multiple 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
€131Multiple 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
€134Multiple Airlines
Thu, 17 Sep - Wed, 23 Sep
Multiple Airlines Logo
08:30 - 14:00STN  London Stansted-CFN Donegal
5h 30m1 stop Dublin
Multiple Airlines Logo
14:30 - 21:20CFN  Donegal-STN London Stansted
6h 50m1 stop Dublin
€135Multiple Airlines
Mon, 14 Sep - Sat, 19 Sep
Multiple Airlines Logo
08:40 - 14:00LGW  London Gatwick-CFN Donegal
5h 20m1 stop Dublin
Multiple Airlines Logo
14:30 - 20:45CFN  Donegal-LGW London Gatwick
6h 15m1 stop Dublin
€135Multiple Airlines
Mon, 14 Sep - Sat, 19 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
€136Multiple 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 - 23:25CFN  Donegal-STN London Stansted
8h 55m1 stop Dublin
€137Multiple Airlines
Mon, 7 Sep - Mon, 14 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
€138Multiple 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
€139Multiple 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
€139Multiple 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
€220
Aer Lingus
17 Sept
LHR14:20London Heathrow
5h 40m
1 stop
CFN20:00Donegal
23 Sept
CFN07:55Donegal
8h 05m
1 stop
LHR16:00London Heathrow
€221
Aer Lingus
17 Sept
LHR13:25London Heathrow
6h 35m
1 stop
CFN20:00Donegal
23 Sept
CFN07:55Donegal
4h 45m
1 stop
LHR12:40London Heathrow
€222

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
14 Oct
LHR06:15London Heathrow
7h 45m
1 stop
CFN14:00Donegal
18 Oct
CFN14:30Donegal
21h 30m
1 stop
LHR12:00London Heathrow
€454
British Airways
14 Oct
LHR06:15London Heathrow
7h 45m
1 stop
CFN14:00Donegal
18 Oct
CFN14:30Donegal
21h 30m
1 stop
LHR12:00London Heathrow
€455
British Airways
30 Nov
LHR06:30London Heathrow
13h 30m
1 stop
CFN20:00Donegal
3 Dec
CFN08:00Donegal
4h 20m
1 stop
LHR12:20London Heathrow
€457

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 13,528 searches. Data last updated 14 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

Thu 17/9

06:30-20:00

1 stop13h 30m

Donegal

Wed 23/9

07:55-19:35

1 stop11h 40m

€126

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

€131

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

€134

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Mon 14/9

08:30-14:00

1 stop5h 30m

Donegal

Sat 19/9

14:30-21:20

1 stop6h 50m

€135

LondonDonegal

LGW London Gatwick - CFN Donegal

LGWCFN

London Gatwick

Mon 14/9

08:40-14:00

1 stop5h 20m

Donegal

Sat 19/9

14:30-20:45

1 stop6h 15m

€135

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

€136

LondonDonegal

STN London Stansted - CFN Donegal

STNCFN

London Stansted

Mon 7/9

06:30-14:00

1 stop7h 30m

Donegal

Mon 14/9

14:30-23:25

1 stop8h 55m

€137

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

€138

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

€139
Fastest return journey

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

€139

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

4h 10m

Direct flights

None
The fastest flight from London to Donegal takes 4h 10m
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?

    A flight from London to Donegal will travel around 637.4 km. By plane, this route typically takes 4h 10m.

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

    Prices for flights from London to Donegal Airport were last updated today.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London 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.

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?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Donegal for you.

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

Yes. momondo allows you to filter the results for London to Donegal flights to just show those with 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?

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.

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