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Cheap flights from London to Donegal from €81

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 28/10. 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 to Donegal

Cheap return flights

Logo
11:30 - 20:00LTN-CFN
8h 30m1 stop
Logo
14:30 - 21:30CFN-LTN
7h 00m1 stop
€135
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Fri, 10 Oct - Mon, 13 Oct
Logo
11:15 - 20:00STN-CFN
8h 45m1 stop
Logo
14:30 - 21:15CFN-STN
6h 45m1 stop
€138
Find Deal
Fri, 10 Oct - Mon, 13 Oct
Logo
14:55 - 20:00LGW-CFN
5h 05m1 stop
Logo
14:30 - 20:55CFN-LGW
6h 25m1 stop
€141
Find Deal
Fri, 10 Oct - Mon, 13 Oct
Logo
14:55 - 20:00LGW-CFN
5h 05m1 stop
Logo
14:30 - 08:30CFN-LGW
18h 00m2 stops
€164
Find Deal
Fri, 10 Oct - Mon, 13 Oct
Aer Lingus Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
Aer Lingus Logo
14:30 - 19:25CFN-LHR
4h 55m1 stop
€187Aer Lingus
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Fri, 10 Oct - Mon, 13 Oct
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
07:55 - 16:50CFN-LHR
8h 55m1 stop
€233Aer Lingus
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Thu, 30 Oct - Wed, 5 Nov
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
07:55 - 13:25CFN-LHR
5h 30m1 stop
€242Aer Lingus
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Thu, 30 Oct - Thu, 6 Nov
British Airways Logo
06:30 - 14:00LHR-CFN
7h 30m1 stop
British Airways Logo
07:55 - 14:35CFN-LHR
6h 40m1 stop
€414British Airways
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Thu, 30 Oct - Wed, 5 Nov
British Airways Logo
15:00 - 20:00LCY-CFN
5h 00m1 stop
British Airways Logo
14:30 - 21:30CFN-LCY
7h 00m1 stop
€497British Airways
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Tue, 28 Oct - Tue, 4 Nov
British Airways Logo
06:50 - 14:00LCY-CFN
7h 10m1 stop
British Airways Logo
14:30 - 21:30CFN-LCY
7h 00m1 stop
€532British Airways
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Thu, 30 Oct - Wed, 5 Nov

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
10 Oct
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
13 Oct
CFN14:30Donegal
4h 55m
1 stop
LHR19:25London Heathrow
€187
Find similar
Aer Lingus
30 Oct
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
5 Nov
CFN07:55Donegal
8h 55m
1 stop
LHR16:50London Heathrow
€233
Find similar
Aer Lingus
30 Oct
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
6 Nov
CFN07:55Donegal
5h 30m
1 stop
LHR13:25London Heathrow
€242
Find similar

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
30 Oct
LHR06:30London Heathrow
7h 30m
1 stop
CFN14:00Donegal
5 Nov
CFN07:55Donegal
6h 40m
1 stop
LHR14:35London Heathrow
€414
Find similar
British Airways
28 Oct
LCY15:00London City
5h 00m
1 stop
CFN20:00Donegal
4 Nov
CFN14:30Donegal
7h 00m
1 stop
LCY21:30London City
€497
Find similar
British Airways
30 Oct
LCY06:50London City
7h 10m
1 stop
CFN14:00Donegal
5 Nov
CFN14:30Donegal
7h 00m
1 stop
LCY21:30London City
€532
Find similar

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 15 September 2025.
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

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Fri 10/10

11:30-20:00

1 stop8h 30m

Donegal

Mon 13/10

14:30-21:30

1 stop7h 00m

€135

LondonDonegal

STN - CFN

STNCFN

London Stansted

Fri 10/10

11:15-20:00

1 stop8h 45m

Donegal

Mon 13/10

14:30-21:15

1 stop6h 45m

€138

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Fri 10/10

14:55-20:00

1 stop5h 05m

Donegal

Mon 13/10

14:30-20:55

1 stop6h 25m

€141

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Fri 10/10

14:55-20:00

1 stop5h 05m

Donegal

Mon 13/10

14:30-08:30

2 stops18h 00m

€164

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 10/10

15:10-20:00

1 stop4h 50m

Donegal

Mon 13/10

14:30-19:25

1 stop4h 55m

€187

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 30/10

07:50-14:00

1 stop6h 10m

Donegal

Wed 5/11

07:55-16:50

1 stop8h 55m

€233

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 30/10

07:50-14:00

1 stop6h 10m

Donegal

Thu 6/11

07:55-13:25

1 stop5h 30m

€242

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 30/10

06:30-14:00

1 stop7h 30m

Donegal

Wed 5/11

07:55-14:35

1 stop6h 40m

€414

LondonDonegal

LCY - CFN

LCYCFN

London City

Tue 28/10

15:00-20:00

1 stop5h 00m

Donegal

Tue 4/11

14:30-21:30

1 stop7h 00m

€497

LondonDonegal

LCY - CFN

LCYCFN

London City

Thu 30/10

06:50-14:00

1 stop7h 10m

Donegal

Wed 5/11

14:30-21:30

1 stop7h 00m

€532

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

Direct flights

None
There are no direct flights from London to Donegal. There are no popular flight routes from London to Donegal.
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  • 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 50m.

  • 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

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.

An easier way to manage your Donegal trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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