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Cheap flights from London to Donegal from £129

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 31/12. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:30 - 14:00STN-CFN
7h 30m1 stop
Multiple Airlines Logo
14:30 - 21:20CFN-STN
6h 50m1 stop
£129Multiple Airlines
Find Deal
on., 31 des. - on., 7 jan.
Multiple Airlines Logo
08:50 - 14:00LGW-CFN
5h 10m1 stop
Multiple Airlines Logo
14:30 - 19:30CFN-LGW
5h 00m1 stop
£132Multiple Airlines
Find Deal
on., 31 des. - on., 7 jan.
Multiple Airlines Logo
06:50 - 14:00LTN-CFN
7h 10m1 stop
Multiple Airlines Logo
14:30 - 20:05CFN-LTN
5h 35m1 stop
£133Multiple Airlines
Find Deal
on., 31 des. - on., 7 jan.
Multiple Airlines Logo
21:40 - 14:00LGW-CFN
16h 20m1 stop
Multiple Airlines Logo
14:30 - 19:30CFN-LGW
5h 00m1 stop
£153Multiple Airlines
Find Deal
on., 31 des. - on., 7 jan.
Multiple Airlines Logo
08:30 - 14:00STN-CFN
5h 30m1 stop
Multiple Airlines Logo
07:55 - 16:15CFN-STN
8h 20m1 stop
£153Multiple Airlines
Find Deal
fr., 19 des. - ti., 23 des.
Multiple Airlines Logo
06:30 - 14:00STN-CFN
7h 30m1 stop
Multiple Airlines Logo
14:30 - 18:20CFN-STN
3h 50m1 stop
£158Multiple Airlines
Find Deal
on., 31 des. - on., 7 jan.
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
14:30 - 19:50CFN-LHR
5h 20m1 stop
£213Aer Lingus
Find Deal
on., 31 des. - on., 7 jan.
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
07:55 - 15:35CFN-LHR
7h 40m1 stop
£227Aer Lingus
Find Deal
to., 1 jan. - to., 8 jan.
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
07:55 - 16:50CFN-LHR
8h 55m1 stop
£244Aer Lingus
Find Deal
on., 31 des. - on., 7 jan.
British Airways Logo
06:50 - 14:00LCY-CFN
7h 10m1 stop
British Airways Logo
14:30 - 12:40CFN-LCY
22h 10m1 stop
£488British Airways
Find Deal
ti., 13 jan. - lø., 17 jan.

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
31 Dec
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
7 Jan
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
£213
Find similar
Aer Lingus
1 Jan
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
8 Jan
CFN07:55Donegal
7h 40m
1 stop
LHR15:35London Heathrow
£227
Find similar
Aer Lingus
31 Dec
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
7 Jan
CFN07:55Donegal
8h 55m
1 stop
LHR16:50London Heathrow
£244
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 18 November 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

STN - CFN

STNCFN

London Stansted

on. 31/12

06:30-14:00

1 stop7h 30m

Donegal

on. 7/1

14:30-21:20

1 stop6h 50m

£129

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

on. 31/12

08:50-14:00

1 stop5h 10m

Donegal

on. 7/1

14:30-19:30

1 stop5h 00m

£132

LondonDonegal

LTN - CFN

LTNCFN

London Luton

on. 31/12

06:50-14:00

1 stop7h 10m

Donegal

on. 7/1

14:30-20:05

1 stop5h 35m

£133

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

on. 31/12

21:40-14:00

1 stop16h 20m

Donegal

on. 7/1

14:30-19:30

1 stop5h 00m

£153

LondonDonegal

STN - CFN

STNCFN

London Stansted

fr. 19/12

08:30-14:00

1 stop5h 30m

Donegal

ti. 23/12

07:55-16:15

1 stop8h 20m

£153

LondonDonegal

STN - CFN

STNCFN

London Stansted

on. 31/12

06:30-14:00

1 stop7h 30m

Donegal

on. 7/1

14:30-18:20

1 stop3h 50m

£158

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

on. 31/12

07:50-14:00

1 stop6h 10m

Donegal

on. 7/1

14:30-19:50

1 stop5h 20m

£213

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

to. 1/1

07:50-14:00

1 stop6h 10m

Donegal

to. 8/1

07:55-15:35

1 stop7h 40m

£227

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

on. 31/12

07:50-14:00

1 stop6h 10m

Donegal

on. 7/1

07:55-16:50

1 stop8h 55m

£244

LondonDonegal

LCY - CFN

LCYCFN

London City

ti. 13/1

06:50-14:00

1 stop7h 10m

Donegal

lø. 17/1

14:30-12:40

1 stop22h 10m

£488

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 £208. 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 £309. 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 £280 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 £306.

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 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 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 £175Free CancellationRating
7.2
1,373 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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