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Cheap flights from London to Donegal from £121

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 28/6. 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
09:50 - 20:00
LGW
-
CFN
10h 10m
1 stop
Multiple Airlines Logo
20:30 - 07:55
CFN
-
LGW
11h 25m
1 stop
£135Multiple Airlines
Sun, 3 May - Sun, 10 May
Multiple Airlines Logo
11:25 - 20:00
STN
-
CFN
8h 35m
1 stop
Multiple Airlines Logo
20:30 - 07:50
CFN
-
STN
11h 20m
1 stop
£135Multiple Airlines
Sun, 3 May - Sun, 10 May
Multiple Airlines Logo
22:00 - 07:35
STN
-
CFN
9h 35m
1 stop
Multiple Airlines Logo
08:00 - 12:50
CFN
-
STN
4h 50m
1 stop
£136Multiple Airlines
Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
13:10 - 20:00
LTN
-
CFN
6h 50m
1 stop
Multiple Airlines Logo
08:00 - 15:45
CFN
-
LTN
7h 45m
1 stop
£139Multiple Airlines
Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
11:55 - 20:00
LGW
-
CFN
8h 05m
1 stop
Multiple Airlines Logo
08:00 - 12:40
CFN
-
LGW
4h 40m
1 stop
£139Multiple Airlines
Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
18:00 - 07:35
STN
-
CFN
13h 35m
1 stop
Multiple Airlines Logo
20:30 - 07:50
CFN
-
STN
11h 20m
1 stop
£142Multiple Airlines
Sat, 18 Apr - Wed, 22 Apr
Multiple Airlines Logo
19:55 - 07:35
LGW
-
CFN
11h 40m
1 stop
Multiple Airlines Logo
08:00 - 12:40
CFN
-
LGW
4h 40m
1 stop
£144Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
18:00 - 07:35
STN
-
CFN
13h 35m
1 stop
Multiple Airlines Logo
08:00 - 11:35
CFN
-
STN
3h 35m
1 stop
£144Multiple Airlines
Sat, 18 Apr - Thu, 23 Apr
Aer Lingus Logo
21:10 - 07:35
LHR
-
CFN
10h 25m
1 stop
Aer Lingus Logo
08:00 - 15:00
CFN
-
LHR
7h 00m
1 stop
£205Aer Lingus
Wed, 6 May - Wed, 13 May
Aer Lingus Logo
15:10 - 20:00
LHR
-
CFN
4h 50m
1 stop
Aer Lingus Logo
08:00 - 15:00
CFN
-
LHR
7h 00m
1 stop
£206Aer Lingus
Wed, 6 May - Wed, 13 May

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
6 May
LHR21:10London Heathrow
10h 25m
1 stop
CFN07:35Donegal
13 May
CFN08:00Donegal
7h 00m
1 stop
LHR15:00London Heathrow
£205
Aer Lingus
6 May
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
13 May
CFN08:00Donegal
7h 00m
1 stop
LHR15:00London Heathrow
£206
Aer Lingus
19 Apr
LHR08:50London Heathrow
11h 10m
1 stop
CFN20:00Donegal
22 Apr
CFN08:00Donegal
5h 55m
1 stop
LHR13:55London Heathrow
£229

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 23 March 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

LGW - CFN

LGWCFN

London Gatwick

Sun 3/5

09:50-20:00

1 stop10h 10m

Donegal

Sun 10/5

20:30-07:55

1 stop11h 25m

£135

LondonDonegal

STN - CFN

STNCFN

London Stansted

Sun 3/5

11:25-20:00

1 stop8h 35m

Donegal

Sun 10/5

20:30-07:50

1 stop11h 20m

£135

LondonDonegal

STN - CFN

STNCFN

London Stansted

Tue 5/5

22:00-07:35

1 stop9h 35m

Donegal

Tue 12/5

08:00-12:50

1 stop4h 50m

£136

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Tue 5/5

13:10-20:00

1 stop6h 50m

Donegal

Tue 12/5

08:00-15:45

1 stop7h 45m

£139

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Tue 5/5

11:55-20:00

1 stop8h 05m

Donegal

Tue 12/5

08:00-12:40

1 stop4h 40m

£139

LondonDonegal

STN - CFN

STNCFN

London Stansted

Sat 18/4

18:00-07:35

1 stop13h 35m

Donegal

Wed 22/4

20:30-07:50

1 stop11h 20m

£142

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Tue 14/4

19:55-07:35

1 stop11h 40m

Donegal

Tue 21/4

08:00-12:40

1 stop4h 40m

£144

LondonDonegal

STN - CFN

STNCFN

London Stansted

Sat 18/4

18:00-07:35

1 stop13h 35m

Donegal

Thu 23/4

08:00-11:35

1 stop3h 35m

£144

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 6/5

21:10-07:35

1 stop10h 25m

Donegal

Wed 13/5

08:00-15:00

1 stop7h 00m

£205
Fastest return journey

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 6/5

15:10-20:00

1 stop4h 50m

Donegal

Wed 13/5

08:00-15:00

1 stop7h 00m

£206

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 45m

Direct flights

None
The fastest flight from London to Donegal takes 3h 45m
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 45m, 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.

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 £173Free CancellationRating
7.2
1,482 reviews
Search Aer Lingus flights

  • How do I get Price Alerts for flights from London to Donegal?

    Search flight deals from London to Donegal. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from London to Donegal with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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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