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Cheap flights from London to Donegal from £118

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 20/2. 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
16:40 - 12:35
LTN
-
CFN
19h 55m
1 stop
Multiple Airlines Logo
07:55 - 15:25
CFN
-
LTN
7h 30m
1 stop
£136Multiple Airlines
Sat, 7 Feb - Sat, 14 Feb
Multiple Airlines Logo
06:30 - 14:00
STN
-
CFN
7h 30m
1 stop
Multiple Airlines Logo
14:30 - 18:20
CFN
-
STN
3h 50m
1 stop
£137Multiple Airlines
Sat, 7 Feb - Sat, 14 Feb
Multiple Airlines Logo
17:45 - 12:35
LGW
-
CFN
18h 50m
1 stop
Multiple Airlines Logo
14:30 - 19:45
CFN
-
LGW
5h 15m
1 stop
£139Multiple Airlines
Sat, 7 Feb - Sat, 14 Feb
Multiple Airlines Logo
13:15 - 10:10
LTN
-
CFN
20h 55m
1 stop
Multiple Airlines Logo
19:15 - 11:05
CFN
-
LTN
15h 50m
1 stop
£224Multiple Airlines
Thu, 12 Mar - Sun, 15 Mar
Multiple Airlines Logo
13:15 - 10:10
LGW
-
CFN
20h 55m
1 stop
Multiple Airlines Logo
19:15 - 18:15
CFN
-
LGW
23h 00m
1 stop
£231Multiple Airlines
Thu, 12 Mar - Sun, 15 Mar
Aer Lingus Logo
08:50 - 14:00
LHR
-
CFN
5h 10m
1 stop
Aer Lingus Logo
14:30 - 19:50
CFN
-
LHR
5h 20m
1 stop
£243Aer Lingus
Sat, 7 Feb - Sat, 14 Feb
Aer Lingus Logo
07:50 - 20:00
LHR
-
CFN
12h 10m
1 stop
Aer Lingus Logo
14:30 - 19:50
CFN
-
LHR
5h 20m
1 stop
£329Aer Lingus
Sat, 7 Mar - Sat, 14 Mar
British Airways Logo
06:30 - 20:00
LHR
-
CFN
13h 30m
1 stop
British Airways Logo
07:55 - 22:00
CFN
-
LHR
14h 05m
1 stop
£381British Airways
Sat, 21 Mar - Wed, 25 Mar
British Airways Logo
11:25 - 20:00
LCY
-
CFN
8h 35m
1 stop
British Airways Logo
13:00 - 12:40
CFN
-
LCY
23h 40m
1 stop
£504British Airways
Sat, 21 Mar - Sun, 22 Mar
Loganair Logo
08:45 - 10:10
LHR
-
CFN
25h 25m
2 stops
Loganair Logo
19:15 - 15:30
CFN
-
LHR
20h 15m
2 stops
£532Loganair
Thu, 12 Mar - Sun, 15 Mar

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
31 Jan
LHR18:45London Heathrow
17h 50m
1 stop
CFN12:35Donegal
4 Feb
CFN14:30Donegal
6h 35m
1 stop
LHR21:05London Heathrow
£191
Aer Lingus
7 Feb
LHR08:50London Heathrow
5h 10m
1 stop
CFN14:00Donegal
14 Feb
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£243
Aer Lingus
7 Mar
LHR07:50London Heathrow
12h 10m
1 stop
CFN20:00Donegal
14 Mar
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£329

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
21 Mar
LHR06:30London Heathrow
13h 30m
1 stop
CFN20:00Donegal
25 Mar
CFN07:55Donegal
14h 05m
1 stop
LHR22:00London Heathrow
£381
British Airways
21 Mar
LCY11:25London City
8h 35m
1 stop
CFN20:00Donegal
22 Mar
CFN13:00Donegal
23h 40m
1 stop
LCY12:40London City
£504

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 22 January 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

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Sat 7/2

16:40-12:35

1 stop19h 55m

Donegal

Sat 14/2

07:55-15:25

1 stop7h 30m

£136

LondonDonegal

STN - CFN

STNCFN

London Stansted

Sat 7/2

06:30-14:00

1 stop7h 30m

Donegal

Sat 14/2

14:30-18:20

1 stop3h 50m

£137

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Sat 7/2

17:45-12:35

1 stop18h 50m

Donegal

Sat 14/2

14:30-19:45

1 stop5h 15m

£139

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Thu 12/3

13:15-10:10

1 stop20h 55m

Donegal

Sun 15/3

19:15-11:05

1 stop15h 50m

£224

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Thu 12/3

13:15-10:10

1 stop20h 55m

Donegal

Sun 15/3

19:15-18:15

1 stop23h 00m

£231

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 7/2

08:50-14:00

1 stop5h 10m

Donegal

Sat 14/2

14:30-19:50

1 stop5h 20m

£243

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 7/3

07:50-20:00

1 stop12h 10m

Donegal

Sat 14/3

14:30-19:50

1 stop5h 20m

£329

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 21/3

06:30-20:00

1 stop13h 30m

Donegal

Wed 25/3

07:55-22:00

1 stop14h 05m

£381

LondonDonegal

LCY - CFN

LCYCFN

London City

Sat 21/3

11:25-20:00

1 stop8h 35m

Donegal

Sun 22/3

13:00-12:40

1 stop23h 40m

£504

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 12/3

08:45-10:10

2 stops25h 25m

Donegal

Sun 15/3

19:15-15:30

2 stops20h 15m

£532

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 50m

Direct flights

None
The fastest flight from London to Donegal takes 3h 50m
There are no direct flights from London to Donegal. There are no popular flight routes from London to Donegal.
Search flight deals

  • How far is London to Donegal by plane?

    There are 396.1 mi between London and Donegal. Flights usually cover this in 3h 50m, 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 many operators does momondo search for flights from London to Donegal Airport?

  • 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.

Best airlines flying from London to Donegal

Compare and see reviews for airlines that fly from London to Donegal with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £171Free CancellationRating
7.2
1,441 reviews
Search Aer Lingus flights

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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