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Cheap flights from London to Donegal from £111

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 31/8. 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 (LON-CFN)

Cheap return flights

Logo
14:50 - 20:00STN-CFN
5h 10m1 stop
Logo
07:55 - 14:25CFN-STN
6h 30m1 stop
£114
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Thu, 2 Oct - Thu, 9 Oct
Logo
14:50 - 20:00STN-CFN
5h 10m1 stop
Logo
07:55 - 14:20CFN-STN
6h 25m1 stop
£115
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Logo
15:35 - 20:00LGW-CFN
4h 25m1 stop
Logo
07:55 - 17:00CFN-LGW
9h 05m1 stop
£117
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Wed, 1 Oct - Wed, 8 Oct
Logo
16:10 - 20:00LTN-CFN
3h 50m1 stop
Logo
14:30 - 21:45CFN-LTN
7h 15m1 stop
£119
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Sat, 4 Oct - Sat, 11 Oct
Aer Lingus Logo
07:40 - 20:00LHR-CFN
12h 20m1 stop
Aer Lingus Logo
14:30 - 20:20CFN-LHR
5h 50m1 stop
£203Aer Lingus
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Sat, 6 Sep - Mon, 8 Sep
Aer Lingus Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
Aer Lingus Logo
10:00 - 08:00CFN-LHR
22h 00m1 stop
£204Aer Lingus
Find Deal
Thu, 11 Sep - Sun, 14 Sep
Aer Lingus Logo
14:20 - 20:00LHR-CFN
5h 40m1 stop
Aer Lingus Logo
07:55 - 18:55CFN-LHR
11h 00m1 stop
£210Aer Lingus
Find Deal
Thu, 2 Oct - Wed, 8 Oct
British Airways Logo
14:40 - 20:00LCY-CFN
5h 20m1 stop
British Airways Logo
13:20 - 21:20CFN-LCY
8h 00m1 stop
£599British Airways
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Thu, 9 Oct - Sun, 12 Oct
British Airways Logo
14:40 - 20:00LCY-CFN
5h 20m1 stop
British Airways Logo
13:20 - 21:20CFN-LCY
8h 00m1 stop
£600British Airways
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Thu, 9 Oct - Sun, 12 Oct
British Airways Logo
14:40 - 20:00LCY-CFN
5h 20m1 stop
British Airways Logo
13:20 - 21:20CFN-LCY
8h 00m1 stop
£601British Airways
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Thu, 9 Oct - Sun, 12 Oct

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
6 Sept
LHR07:40London Heathrow
12h 20m
1 stop
CFN20:00Donegal
8 Sept
CFN14:30Donegal
5h 50m
1 stop
LHR20:20London Heathrow
£203
Find similar
Aer Lingus
11 Sept
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
14 Sept
CFN10:00Donegal
22h 00m
1 stop
LHR08:00London Heathrow
£204
Find similar
Aer Lingus
2 Oct
LHR14:20London Heathrow
5h 40m
1 stop
CFN20:00Donegal
8 Oct
CFN07:55Donegal
11h 00m
1 stop
LHR18:55London Heathrow
£210
Find similar

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
9 Oct
LCY14:40London City
5h 20m
1 stop
CFN20:00Donegal
12 Oct
CFN13:20Donegal
8h 00m
1 stop
LCY21:20London City
£599
Find similar
British Airways
9 Oct
LCY14:40London City
5h 20m
1 stop
CFN20:00Donegal
12 Oct
CFN13:20Donegal
8h 00m
1 stop
LCY21:20London City
£600
Find similar
British Airways
9 Oct
LCY14:40London City
5h 20m
1 stop
CFN20:00Donegal
12 Oct
CFN13:20Donegal
8h 00m
1 stop
LCY21:20London City
£601
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 21 August 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

Thu 2/10

14:50-20:00

1 stop5h 10m

Donegal

Thu 9/10

07:55-14:25

1 stop6h 30m

£114

LondonDonegal

STN - CFN

STNCFN

London Stansted

Wed 1/10

14:50-20:00

1 stop5h 10m

Donegal

Wed 8/10

07:55-14:20

1 stop6h 25m

£115

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Wed 1/10

15:35-20:00

1 stop4h 25m

Donegal

Wed 8/10

07:55-17:00

1 stop9h 05m

£117

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Sat 4/10

16:10-20:00

1 stop3h 50m

Donegal

Sat 11/10

14:30-21:45

1 stop7h 15m

£119

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 6/9

07:40-20:00

1 stop12h 20m

Donegal

Mon 8/9

14:30-20:20

1 stop5h 50m

£203

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 11/9

15:10-20:00

1 stop4h 50m

Donegal

Sun 14/9

10:00-08:00

1 stop22h 00m

£204

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 2/10

14:20-20:00

1 stop5h 40m

Donegal

Wed 8/10

07:55-18:55

1 stop11h 00m

£210

LondonDonegal

LCY - CFN

LCYCFN

London City

Thu 9/10

14:40-20:00

1 stop5h 20m

Donegal

Sun 12/10

13:20-21:20

1 stop8h 00m

£599

LondonDonegal

LCY - CFN

LCYCFN

London City

Thu 9/10

14:40-20:00

1 stop5h 20m

Donegal

Sun 12/10

13:20-21:20

1 stop8h 00m

£600

LondonDonegal

LCY - CFN

LCYCFN

London City

Thu 9/10

14:40-20:00

1 stop5h 20m

Donegal

Sun 12/10

13:20-21:20

1 stop8h 00m

£601

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 £203. 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 £301. 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 £273 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 £299.

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.
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  • 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
7.1
1,228 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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