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Cheap flights from London to Donegal from £82

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 1/6. 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
0 bags
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Find the cheapest flights from London to Donegal

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
21:40 - 14:00
LTN
-
CFN
16h 20m
1 stop
Multiple Airlines Logo
07:55 - 15:25
CFN
-
LTN
7h 30m
1 stop
£135Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
18:40 - 14:00
LTN
-
CFN
19h 20m
1 stop
Multiple Airlines Logo
07:55 - 17:25
CFN
-
LTN
9h 30m
1 stop
£135Multiple Airlines
Mon, 8 Jun - Sat, 13 Jun
Multiple Airlines Logo
08:30 - 14:00
STN
-
CFN
5h 30m
1 stop
Multiple Airlines Logo
14:30 - 19:20
CFN
-
STN
4h 50m
1 stop
£136Multiple Airlines
Mon, 8 Jun - Sat, 13 Jun
Multiple Airlines Logo
09:45 - 14:00
LGW
-
CFN
4h 15m
1 stop
Multiple Airlines Logo
07:55 - 17:10
CFN
-
LGW
9h 15m
1 stop
£138Multiple Airlines
Mon, 8 Jun - Sat, 13 Jun
Multiple Airlines Logo
19:40 - 20:00
STN
-
CFN
24h 20m
2 stops
Multiple Airlines Logo
14:30 - 23:25
CFN
-
STN
8h 55m
1 stop
£138Multiple Airlines
Mon, 22 Jun - Mon, 29 Jun
Multiple Airlines Logo
06:30 - 14:00
STN
-
CFN
7h 30m
1 stop
Multiple Airlines Logo
14:30 - 23:20
CFN
-
STN
8h 50m
1 stop
£138Multiple Airlines
Thu, 2 Jul - Wed, 8 Jul
Multiple Airlines Logo
15:15 - 14:00
LTN
-
CFN
22h 45m
2 stops
Multiple Airlines Logo
07:55 - 15:25
CFN
-
LTN
7h 30m
1 stop
£142Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
22:05 - 20:00
STN
-
CFN
21h 55m
2 stops
Multiple Airlines Logo
07:55 - 17:35
CFN
-
STN
9h 40m
1 stop
£142Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Aer Lingus Logo
15:50 - 20:00
LHR
-
CFN
4h 10m
1 stop
Aer Lingus Logo
14:30 - 18:20
CFN
-
LHR
3h 50m
1 stop
£223Aer Lingus
Tue, 14 Jul - Sat, 18 Jul
Aer Lingus Logo
15:10 - 20:00
LHR
-
CFN
4h 50m
1 stop
Aer Lingus Logo
14:30 - 20:20
CFN
-
LHR
5h 50m
1 stop
£224Aer Lingus
Tue, 14 Jul - Sat, 18 Jul

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
23 Jun
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
30 Jun
CFN14:30Donegal
5h 50m
1 stop
LHR20:20London Heathrow
£217
Aer Lingus
14 Jul
LHR15:50London Heathrow
4h 10m
1 stop
CFN20:00Donegal
18 Jul
CFN14:30Donegal
3h 50m
1 stop
LHR18:20London Heathrow
£223
Aer Lingus
14 Jul
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
18 Jul
CFN14:30Donegal
5h 50m
1 stop
LHR20:20London Heathrow
£224

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
27 Sept
LHR06:20London Heathrow
7h 40m
1 stop
CFN14:00Donegal
30 Sept
CFN14:30Donegal
6h 30m
1 stop
LHR21:00London Heathrow
£386
British Airways
27 Sept
LHR06:20London Heathrow
7h 40m
1 stop
CFN14:00Donegal
30 Sept
CFN14:30Donegal
7h 15m
1 stop
LHR21:45London Heathrow
£386
British Airways
21 Jun
LHR06:20London Heathrow
7h 40m
1 stop
CFN14:00Donegal
29 Jun
CFN14:30Donegal
19h 40m
1 stop
LHR10:10London Heathrow
£400

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 24 May 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

LTN - CFN

LTNCFN

London Luton

Thu 11/6

21:40-14:00

1 stop16h 20m

Donegal

Thu 18/6

07:55-15:25

1 stop7h 30m

£135

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Mon 8/6

18:40-14:00

1 stop19h 20m

Donegal

Sat 13/6

07:55-17:25

1 stop9h 30m

£135

LondonDonegal

STN - CFN

STNCFN

London Stansted

Mon 8/6

08:30-14:00

1 stop5h 30m

Donegal

Sat 13/6

14:30-19:20

1 stop4h 50m

£136

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Mon 8/6

09:45-14:00

1 stop4h 15m

Donegal

Sat 13/6

07:55-17:10

1 stop9h 15m

£138

LondonDonegal

STN - CFN

STNCFN

London Stansted

Mon 22/6

19:40-20:00

2 stops24h 20m

Donegal

Mon 29/6

14:30-23:25

1 stop8h 55m

£138

LondonDonegal

STN - CFN

STNCFN

London Stansted

Thu 2/7

06:30-14:00

1 stop7h 30m

Donegal

Wed 8/7

14:30-23:20

1 stop8h 50m

£138

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Thu 11/6

15:15-14:00

2 stops22h 45m

Donegal

Thu 18/6

07:55-15:25

1 stop7h 30m

£142

LondonDonegal

STN - CFN

STNCFN

London Stansted

Thu 11/6

22:05-20:00

2 stops21h 55m

Donegal

Thu 18/6

07:55-17:35

1 stop9h 40m

£142
Fastest return journey

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 14/7

15:50-20:00

1 stop4h 10m

Donegal

Sat 18/7

14:30-18:20

1 stop3h 50m

£223

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 14/7

15:10-20:00

1 stop4h 50m

Donegal

Sat 18/7

14:30-20:20

1 stop5h 50m

£224

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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.
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 4h 10m, 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

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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