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Cheap flights from London Heathrow Airport to Donegal from £167

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CFN
5 Apr — 12 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 6 March 2026.

Mon 20/406:20
LHR
-
CFN
1 stop25h 15m
Multiple Airlines
Mon 27/408:00
CFN
-
LHR
1 stop13h 45m
Multiple Airlines
Deal found 6/3£167
Sat 18/406:15
LHR
-
CFN
1 stop13h 45m
Multiple Airlines
Sat 25/408:00
CFN
-
LHR
1 stop12h 00m
Multiple Airlines
Deal found 4/3£168
Sat 21/313:35
LHR
-
CFN
1 stop6h 25m
Multiple Airlines
Wed 25/307:55
CFN
-
LHR
1 stop8h 40m
Multiple Airlines
Deal found 5/3£178
Sat 4/406:15
LHR
-
CFN
1 stop13h 45m
Multiple Airlines
Sat 11/408:00
CFN
-
LHR
1 stop12h 00m
Multiple Airlines
Deal found 5/3£180
Mon 23/313:25
LHR
-
CFN
1 stop6h 35m
Multiple Airlines
Wed 25/307:55
CFN
-
LHR
1 stop14h 05m
Multiple Airlines
Deal found 4/3£185
Mon 13/415:10
LHR
-
CFN
1 stop4h 50m
Aer Lingus
Sun 19/408:00
CFN
-
LHR
1 stop5h 30m
Aer Lingus
Deal found 4/3£204
Sun 19/408:50
LHR
-
CFN
1 stop11h 10m
Aer Lingus
Sun 26/408:00
CFN
-
LHR
1 stop5h 30m
Aer Lingus
Deal found 5/3£205
Sun 7/606:20
LHR
-
CFN
1 stop13h 40m
Multiple Airlines
Sun 14/608:00
CFN
-
LHR
1 stop13h 45m
Multiple Airlines
Deal found 3/3£208
Tue 9/621:10
LHR
-
CFN
1 stop10h 25m
Aer Lingus
Tue 16/608:00
CFN
-
LHR
1 stop5h 30m
Aer Lingus
Deal found 3/3£209
Tue 9/614:20
LHR
-
CFN
1 stop5h 40m
Aer Lingus
Mon 15/620:30
CFN
-
LHR
1 stop11h 35m
Aer Lingus
Deal found 3/3£214

Find 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 6 March 2026.

Round-trip from

£167
20/4-27/4
  • 20/4-27/4
  • 2 total stops
  • 39h 00m total
  • London to Donegal
Search Deals

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 6 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 4/4

06:15-20:00

1 stop13h 45m

Donegal

Sat 11/4

08:00-20:00

1 stop12h 00m

£180

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 23/3

13:25-20:00

1 stop6h 35m

Donegal

Wed 25/3

07:55-22:00

1 stop14h 05m

£185

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 28/3

20:45-06:35

1 stop9h 50m

Donegal

Sat 4/4

08:00-16:00

1 stop8h 00m

£217

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 8/6

15:50-20:00

1 stop4h 10m

Donegal

Sun 14/6

20:30-08:05

1 stop11h 35m

£218
Fastest return journey

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Wed 15/4

15:10-20:00

1 stop4h 50m

Donegal

Wed 22/4

08:00-12:40

1 stop4h 40m

£227

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Tue 9/6

14:20-20:00

1 stop5h 40m

Donegal

Fri 12/6

08:00-15:00

1 stop7h 00m

£231

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 8/6

15:50-20:00

1 stop4h 10m

Donegal

Fri 12/6

08:00-15:00

1 stop7h 00m

£236

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 19/6

14:20-20:00

1 stop5h 40m

Donegal

Sun 21/6

08:00-13:55

1 stop5h 55m

£237

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 2/4

21:10-07:35

1 stop10h 25m

Donegal

Mon 6/4

20:30-08:05

1 stop11h 35m

£243

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 13/4

06:20-20:00

1 stop13h 40m

Donegal

Sun 19/4

20:30-21:45

1 stop25h 15m

£245

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Donegal (average of £74). Flying from London Heathrow Airport to Donegal in August is currently the most expensive (average of £132). 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.

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 6 March 2026.
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
1,471 reviews
Check prices

Food

6.6

Entertainment

7.0

Crew

8.1

Boarding

7.4

Comfort

7.1

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.2
Good
1,471 reviews
Aer Lingus
7.2
Good
1,471 reviews
Check prices

Food

6.6

Entertainment

7.0

Crew

8.1

Boarding

7.4

Comfort

7.1

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

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 9h 50m. 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 (£172), 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Donegal (average of £74). Flying from London Heathrow Airport to Donegal in August is currently the most expensive (average of £132). 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
Letterkenny
Bundoran
Killybegs

Browse thousands of different options on Cheapflights for your next trip

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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 6 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£172Average£270FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

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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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