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Cheap flights from London to Donegal from £125

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Donegal departing on 8/11. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:25 - 20:00LTN-CFN
7h 35m1 stop
Multiple Airlines Logo
07:55 - 15:25CFN-LTN
7h 30m1 stop
£125Multiple Airlines
Find Deal
Sat, 8 Nov - Sat, 15 Nov
Multiple Airlines Logo
05:50 - 14:00LTN-CFN
8h 10m1 stop
Multiple Airlines Logo
07:55 - 16:00CFN-LTN
8h 05m1 stop
£127Multiple Airlines
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Multiple Airlines Logo
05:50 - 14:00LTN-CFN
8h 10m1 stop
Multiple Airlines Logo
07:55 - 16:00CFN-LTN
8h 05m1 stop
£128Multiple Airlines
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Multiple Airlines Logo
15:15 - 20:00STN-CFN
4h 45m1 stop
Multiple Airlines Logo
14:30 - 20:05CFN-STN
5h 35m1 stop
£128Multiple Airlines
Find Deal
Sat, 8 Nov - Sat, 15 Nov
Aer Lingus Logo
18:45 - 12:35LHR-CFN
17h 50m1 stop
Aer Lingus Logo
14:30 - 19:50CFN-LHR
5h 20m1 stop
£181Aer Lingus
Find Deal
Sat, 8 Nov - Sat, 13 Dec
Aer Lingus Logo
08:50 - 14:00LHR-CFN
5h 10m1 stop
Aer Lingus Logo
14:30 - 19:50CFN-LHR
5h 20m1 stop
£218Aer Lingus
Find Deal
Sat, 8 Nov - Sat, 15 Nov
Aer Lingus Logo
08:50 - 14:00LHR-CFN
5h 10m1 stop
Aer Lingus Logo
14:30 - 19:50CFN-LHR
5h 20m1 stop
£222Aer Lingus
Find Deal
Tue, 28 Oct - Fri, 31 Oct
British Airways Logo
06:30 - 14:00LHR-CFN
7h 30m1 stop
British Airways Logo
07:55 - 16:25CFN-LHR
8h 30m1 stop
£422British Airways
Find Deal
Fri, 28 Nov - Fri, 5 Dec
British Airways Logo
06:50 - 14:00LCY-CFN
7h 10m1 stop
British Airways Logo
14:30 - 21:30CFN-LCY
7h 00m1 stop
£481British Airways
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Fri, 28 Nov - Fri, 5 Dec
British Airways Logo
11:25 - 20:00LCY-CFN
8h 35m1 stop
British Airways Logo
14:30 - 12:40CFN-LCY
22h 10m1 stop
£532British Airways
Find Deal
Sat, 8 Nov - Sat, 15 Nov

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
8 Nov
LHR18:45London Heathrow
17h 50m
1 stop
CFN12:35Donegal
13 Dec
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£181
Find similar
Aer Lingus
8 Nov
LHR08:50London Heathrow
5h 10m
1 stop
CFN14:00Donegal
15 Nov
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£218
Find similar
Aer Lingus
28 Oct
LHR08:50London Heathrow
5h 10m
1 stop
CFN14:00Donegal
31 Oct
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£222
Find similar

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
28 Nov
LHR06:30London Heathrow
7h 30m
1 stop
CFN14:00Donegal
5 Dec
CFN07:55Donegal
8h 30m
1 stop
LHR16:25London Heathrow
£422
Find similar
British Airways
28 Nov
LCY06:50London City
7h 10m
1 stop
CFN14:00Donegal
5 Dec
CFN14:30Donegal
7h 00m
1 stop
LCY21:30London City
£481
Find similar
British Airways
8 Nov
LCY11:25London City
8h 35m
1 stop
CFN20:00Donegal
15 Nov
CFN14:30Donegal
22h 10m
1 stop
LCY12:40London 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 279,928 searches. Data last updated 15 October 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

Sat 8/11

12:25-20:00

1 stop7h 35m

Donegal

Sat 15/11

07:55-15:25

1 stop7h 30m

£125

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Fri 28/11

05:50-14:00

1 stop8h 10m

Donegal

Fri 5/12

07:55-16:00

1 stop8h 05m

£127

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Fri 28/11

05:50-14:00

1 stop8h 10m

Donegal

Fri 5/12

07:55-16:00

1 stop8h 05m

£128

LondonDonegal

STN - CFN

STNCFN

London Stansted

Sat 8/11

15:15-20:00

1 stop4h 45m

Donegal

Sat 15/11

14:30-20:05

1 stop5h 35m

£128

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 8/11

18:45-12:35

1 stop17h 50m

Donegal

Sat 13/12

14:30-19:50

1 stop5h 20m

£181

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 8/11

08:50-14:00

1 stop5h 10m

Donegal

Sat 15/11

14:30-19:50

1 stop5h 20m

£218

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 28/10

08:50-14:00

1 stop5h 10m

Donegal

Fri 31/10

14:30-19:50

1 stop5h 20m

£222

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 28/11

06:30-14:00

1 stop7h 30m

Donegal

Fri 5/12

07:55-16:25

1 stop8h 30m

£422

LondonDonegal

LCY - CFN

LCYCFN

London City

Fri 28/11

06:50-14:00

1 stop7h 10m

Donegal

Fri 5/12

14:30-21:30

1 stop7h 00m

£481

LondonDonegal

LCY - CFN

LCYCFN

London City

Sat 8/11

11:25-20:00

1 stop8h 35m

Donegal

Sat 15/11

14:30-12:40

1 stop22h 10m

£532

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 day to depart on your flight to Donegal?

The cheapest day to depart on your flight to Donegal is on a Wednesday when prices can be found for as low as £206. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £305. These prices are subject to change though, so be sure to set up a Price Alert for flights to Donegal.

What is the cheapest time of day to depart on your flight to Donegal?

Flying to Donegal from London in the morning is the least expensive time of day to depart. momondo users have found prices as low as £277 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Donegal is in the afternoon when prices are around £302.

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.
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 4h 05m, 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 £173Free CancellationRating
7.2
1,336 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

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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