Latest deals
When to book
FAQs
Price Alerts

Cheap flights from London to Donegal from €143

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 25/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted the Winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Donegal

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:25 - 20:00LGW-CFN
8h 35m1 stop
Multiple Airlines Logo
07:55 - 17:20CFN-LGW
9h 25m1 stop
€143Multiple Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
06:30 - 14:00STN-CFN
7h 30m1 stop
Multiple Airlines Logo
07:55 - 14:20CFN-STN
6h 25m1 stop
€144Multiple Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
06:50 - 14:00LTN-CFN
7h 10m1 stop
Multiple Airlines Logo
14:30 - 20:05CFN-LTN
5h 35m1 stop
€158Multiple Airlines
Find Deal
Wed, 10 Dec - Wed, 17 Dec
Multiple Airlines Logo
06:30 - 14:00STN-CFN
7h 30m1 stop
Multiple Airlines Logo
13:00 - 20:05CFN-STN
7h 05m1 stop
€181Multiple Airlines
Find Deal
Tue, 16 Dec - Sun, 21 Dec
Multiple Airlines Logo
08:50 - 14:00LGW-CFN
5h 10m1 stop
Multiple Airlines Logo
13:00 - 21:10CFN-LGW
8h 10m1 stop
€182Multiple Airlines
Find Deal
Tue, 16 Dec - Sun, 21 Dec
Aer Lingus Logo
07:50 - 20:00LHR-CFN
12h 10m1 stop
Aer Lingus Logo
14:30 - 19:50CFN-LHR
5h 20m1 stop
€226Aer Lingus
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Aer Lingus Logo
07:50 - 14:00LHR-CFN
6h 10m1 stop
Aer Lingus Logo
07:55 - 15:35CFN-LHR
7h 40m1 stop
€241Aer Lingus
Find Deal
Wed, 10 Dec - Wed, 17 Dec
Aer Lingus Logo
19:45 - 14:00LHR-CFN
18h 15m1 stop
Aer Lingus Logo
14:30 - 21:05CFN-LHR
6h 35m1 stop
€264Aer Lingus
Find Deal
Fri, 12 Dec - Fri, 19 Dec
British Airways Logo
15:10 - 20:00LHR-CFN
4h 50m1 stop
British Airways Logo
14:30 - 21:05CFN-LHR
6h 35m1 stop
€557British Airways
Find Deal
Thu, 20 Nov - Thu, 27 Nov
British Airways Logo
06:50 - 14:00LCY-CFN
7h 10m1 stop
British Airways Logo
07:55 - 12:40CFN-LCY
4h 45m1 stop
€624British Airways
Find Deal
Thu, 20 Nov - Thu, 27 Nov

Aer Lingus flights from London to Donegal

Our best Aer Lingus deals on London to Donegal flight tickets
Aer Lingus
25 Nov
LHR07:50London Heathrow
12h 10m
1 stop
CFN20:00Donegal
2 Dec
CFN14:30Donegal
5h 20m
1 stop
LHR19:50London Heathrow
€226
Find similar
Aer Lingus
10 Dec
LHR07:50London Heathrow
6h 10m
1 stop
CFN14:00Donegal
17 Dec
CFN07:55Donegal
7h 40m
1 stop
LHR15:35London Heathrow
€241
Find similar
Aer Lingus
1 Nov
LHR08:50London Heathrow
11h 10m
1 stop
CFN20:00Donegal
5 Nov
CFN14:30Donegal
6h 35m
1 stop
LHR21:05London Heathrow
€244
Find similar

British Airways flights from London to Donegal

Our best British Airways deals on London to Donegal flight tickets
British Airways
20 Nov
LHR15:10London Heathrow
4h 50m
1 stop
CFN20:00Donegal
27 Nov
CFN14:30Donegal
6h 35m
1 stop
LHR21:05London Heathrow
€557
Find similar
British Airways
20 Nov
LCY06:50London City
7h 10m
1 stop
CFN14:00Donegal
27 Nov
CFN07:55Donegal
4h 45m
1 stop
LCY12:40London City
€624
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 13,528 searches. Data last updated 28 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

LGW - CFN

LGWCFN

London Gatwick

Tue 25/11

11:25-20:00

1 stop8h 35m

Donegal

Tue 2/12

07:55-17:20

1 stop9h 25m

€143

LondonDonegal

STN - CFN

STNCFN

London Stansted

Tue 25/11

06:30-14:00

1 stop7h 30m

Donegal

Tue 2/12

07:55-14:20

1 stop6h 25m

€144

LondonDonegal

LTN - CFN

LTNCFN

London Luton

Wed 10/12

06:50-14:00

1 stop7h 10m

Donegal

Wed 17/12

14:30-20:05

1 stop5h 35m

€158

LondonDonegal

STN - CFN

STNCFN

London Stansted

Tue 16/12

06:30-14:00

1 stop7h 30m

Donegal

Sun 21/12

13:00-20:05

1 stop7h 05m

€181

LondonDonegal

LGW - CFN

LGWCFN

London Gatwick

Tue 16/12

08:50-14:00

1 stop5h 10m

Donegal

Sun 21/12

13:00-21:10

1 stop8h 10m

€182

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 25/11

07:50-20:00

1 stop12h 10m

Donegal

Tue 2/12

14:30-19:50

1 stop5h 20m

€226

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 10/12

07:50-14:00

1 stop6h 10m

Donegal

Wed 17/12

07:55-15:35

1 stop7h 40m

€241

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 12/12

19:45-14:00

1 stop18h 15m

Donegal

Fri 19/12

14:30-21:05

1 stop6h 35m

€264

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 20/11

15:10-20:00

1 stop4h 50m

Donegal

Thu 27/11

14:30-21:05

1 stop6h 35m

€557

LondonDonegal

LCY - CFN

LCYCFN

London City

Thu 20/11

06:50-14:00

1 stop7h 10m

Donegal

Thu 27/11

07:55-12:40

1 stop4h 45m

€624

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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?

    A flight from London to Donegal will travel around 637.4 km. By plane, this route typically takes 3h 35m.

  • When did momondo last update prices for flights from London to Donegal Airport?

    Prices for flights from London to Donegal Airport were last updated today.

  • How old do you have to be to fly from London to Donegal Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Donegal Airport.

  • What documentation or ID do you need to fly to Donegal Airport?

    The necessary travel and health documents for your Donegal Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

    Confirm your travel details to search for the latest offers for flights from London to Donegal. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

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

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Travelling to a place near Donegal?

Book flights to Donegal if you plan to visit one of these locations
Letterkenny
Bundoran
Killybegs

Why use momondo?

Why should I use momondo to find a flight deal from London to Donegal?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Donegal for you.

Can I find flights from London to Donegal with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Donegal flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Donegal?

momondo helps you find the best flight between London and Donegal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 27/11
Thu 4/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland