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Cheap flights from London Heathrow Airport to Donegal from £216

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CFN
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheap flight deals from Heathrow to Donegal

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Donegal (CFN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 October 2025.

Round-trip from

£216
Aer Lingus
  • Aer Lingus
  • 29/11-6/12
  • 2 total stops
  • 11h 30m total
  • London to Donegal
Search Deals

Find flight deals from Heathrow to Donegal

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Donegal
Explore the most affordable flight options available from Heathrow to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Sat 29/1107:50LHR - CFN
1 stop6h 10mAer Lingus
Sat 6/1214:30CFN - LHR
1 stop5h 20mAer Lingus
Deal found 15/10£216
Sun 30/1107:50LHR - CFN
1 stop4h 45mAer Lingus
Sun 7/1210:00CFN - LHR
1 stop4h 25mAer Lingus
Deal found 16/10£233
Sun 30/1122:15LHR - CFN
2 stops15h 45mMultiple Airlines
Sun 7/1210:00CFN - LHR
1 stop4h 25mMultiple Airlines
Deal found 16/10£307
Fri 21/1107:50LHR - CFN
1 stop6h 10mAer Lingus
Sun 23/1113:00CFN - LHR
1 stop8h 05mAer Lingus
Deal found 15/10£322
Fri 21/1120:45LHR - CFN
1 stop23h 15mMultiple Airlines
Sun 23/1119:15CFN - LHR
2 stops20h 15mMultiple Airlines
Deal found 15/10£482
Sat 29/1107:50LHR - CFN
1 stop6h 10mMultiple Airlines
Sat 6/1207:55CFN - LHR
2 stops32h 55mMultiple Airlines
Deal found 15/10£1,129

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 17 October 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Donegal that are best for you.

Fly from

Heathrow

Fly to

Donegal

Route

Depart

Return

Price

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 29/11

07:50-14:00

1 stop6h 10m

Donegal

Sat 6/12

14:30-19:50

1 stop5h 20m

£216

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 1/12

20:45-14:00

1 stop17h 15m

Donegal

Mon 8/12

14:30-08:05

1 stop17h 35m

£223

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sun 30/11

07:50-12:35

1 stop4h 45m

Donegal

Sun 7/12

10:00-14:25

1 stop4h 25m

£233

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 1/12

08:50-14:00

1 stop5h 10m

Donegal

Mon 8/12

07:55-19:15

2 stops11h 20m

£235

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 27/1

14:15-20:00

1 stop5h 45m

Donegal

Sat 31/1

14:30-19:50

1 stop5h 20m

£246

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sun 30/11

22:15-14:00

2 stops15h 45m

Donegal

Sun 7/12

10:00-14:25

1 stop4h 25m

£307

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 21/11

07:50-14:00

1 stop6h 10m

Donegal

Sun 23/11

13:00-21:05

1 stop8h 05m

£322

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 21/11

20:45-20:00

1 stop23h 15m

Donegal

Sun 23/11

19:15-15:30

2 stops20h 15m

£482

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 29/11

07:50-14:00

1 stop6h 10m

Donegal

Sat 6/12

07:55-16:50

2 stops32h 55m

£1,129

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Best time to book a flight from Heathrow to Donegal

Have a flexible travel schedule? Discover the best time to fly to Donegal from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Donegal

What is the cheapest month to book a flight from London Heathrow Airport to Donegal?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Donegal (average of £71). Flying from London Heathrow Airport to Donegal in August is currently the most expensive (average of £119). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to CFN?

Find hourly flight availability from Heathrow to Donegal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

It’s typically best to fly out from London Heathrow Airport to Donegal in the evening. Doing so could potentially save you 21% on the flight price compared to flying in the afternoon, which is usually more expensive.

Reviews of airlines servicing Donegal

Get insights into the airlines that provide service to Donegal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Donegal. Reviews last updated 17 October 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Donegal, such as Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,341 reviews
Check prices

Boarding

7.4

Food

6.5

Overall

7.2

Comfort

7.1

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,341 reviews
Aer Lingus
7.2
Good
1,341 reviews
Check prices

Boarding

7.4

Food

6.5

Overall

7.2

Comfort

7.1

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Donegal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Donegal from London Heathrow?

    Donegal (CFN) is the airport you will fly into if you book a flight from London Heathrow to Donegal. You should not have trouble finding flights to Donegal from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Donegal airport from London Heathrow. It is only a 28.5 mi journey from Donegal (CFN) to Donegal’s city center.

  • How long is the flight from London Heathrow Airport to Donegal?

    Airlines like Aer Lingus fly from London Heathrow Airport to Donegal in about 6h 10m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 408 mi.

  • What is the cheapest airline to fly from London Heathrow Airport to Donegal round-trip?

    According to our current data, Aer Lingus (£171), offers the cheapest pricing from London Heathrow Airport to Donegal.

  • Can I find deals for flights from Heathrow to Donegal that include hotel bookings?

    Yes. In addition to deals on Heathrow to Donegal flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Donegal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Donegal.

  • Can I find deals for business class flights from Heathrow to Donegal?

    Yes. Cheapflights offers flight deals from Heathrow to Donegal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Donegal?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Donegal (average of £71). Flying from London Heathrow Airport to Donegal in August is currently the most expensive (average of £119). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Donegal?

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

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Alternative routes for Heathrow to Donegal

See prices for flight routes from nearby airports that may be better suited for you.
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Southend to Donegal flights

Top airline flying from Heathrow to Donegal

Discover the top airline that operate flights from Heathrow to Donegal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£171Average£269FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Donegal?

Cheapflights helps you search for flights from Heathrow to Donegal via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Donegal?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Donegal from Heathrow.

Can Cheapflights find flights from Heathrow to Donegal with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Donegal flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to Donegal become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Donegal on Cheapflights with our Price Alert feature and get notified when better prices are available.

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