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Cheap flights from London Heathrow Airport to Donegal from £191

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CFN
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

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 16 January 2026.

Round-trip from

£191
Aer Lingus
  • Aer Lingus
  • 16/2-23/2
  • 2 total stops
  • 12h 50m total
  • London to Donegal
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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 16 January 2026.

Mon 16/208:50
LHR
-
CFN
1 stop5h 10m
Aer Lingus
Mon 23/207:55
CFN
-
LHR
1 stop7h 40m
Aer Lingus
Deal found 15/1£191
Sat 7/219:35
LHR
-
CFN
1 stop17h 00m
Aer Lingus
Sat 14/207:55
CFN
-
LHR
1 stop8h 55m
Aer Lingus
Deal found 14/1£192
Thu 12/215:10
LHR
-
CFN
1 stop4h 50m
Aer Lingus
Thu 19/214:30
CFN
-
LHR
1 stop6h 35m
Aer Lingus
Deal found 15/1£208
Sun 1/306:55
LHR
-
CFN
1 stop11h 50m
Multiple Airlines
Sun 8/319:15
CFN
-
LHR
1 stop15h 15m
Multiple Airlines
Deal found 15/1£275
Fri 10/406:15
LHR
-
CFN
1 stop3h 55m
Multiple Airlines
Sun 12/419:15
CFN
-
LHR
1 stop12h 10m
Multiple Airlines
Deal found 14/1£358
Sat 7/212:50
LHR
-
CFN
1 stop23h 45m
British Airways
Sat 14/207:55
CFN
-
LHR
1 stop6h 40m
British Airways
Deal found 15/1£374
Sat 7/222:35
LHR
-
CFN
2 stops14h 00m
Multiple Airlines
Sat 14/214:30
CFN
-
LHR
1 stop5h 20m
Multiple Airlines
Deal found 14/1£414
Mon 16/206:00
LHR
-
CFN
2 stops14h 00m
Multiple Airlines
Mon 23/214:30
CFN
-
LHR
2 stops17h 35m
Multiple Airlines
Deal found 15/1£468

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 16 January 2026.
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

Mon 16/2

08:50-14:00

1 stop5h 10m

Donegal

Mon 23/2

07:55-15:35

1 stop7h 40m

£191

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 7/2

19:35-12:35

1 stop17h 00m

Donegal

Sat 14/2

07:55-16:50

1 stop8h 55m

£192

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Thu 12/2

15:10-20:00

1 stop4h 50m

Donegal

Thu 19/2

14:30-21:05

1 stop6h 35m

£208

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sun 1/3

06:55-18:45

1 stop11h 50m

Donegal

Sun 8/3

19:15-10:30

1 stop15h 15m

£275

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Fri 10/4

06:15-10:10

1 stop3h 55m

Donegal

Sun 12/4

19:15-07:25

1 stop12h 10m

£358

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 7/2

12:50-12:35

1 stop23h 45m

Donegal

Sat 14/2

07:55-14:35

1 stop6h 40m

£374

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Sat 7/2

22:35-12:35

2 stops14h 00m

Donegal

Sat 14/2

14:30-19:50

1 stop5h 20m

£414

LondonDonegal

LHR - CFN

LHRCFN

London Heathrow

Mon 16/2

06:00-20:00

2 stops14h 00m

Donegal

Mon 23/2

14:30-19:50

1 stop5h 20m

£2,541

Flights are sorted by cheapest return flights first.

Deals found on 15/1

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.

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 16 January 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
1,435 reviews
Check prices

Comfort

7.1

Overall

7.2

Entertainment

6.9

Food

6.6

Boarding

7.4

Crew

8.0

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.
Aer Lingus
7.2
Good
1,435 reviews
Aer Lingus
7.2
Good
1,435 reviews
Check prices

Comfort

7.1

Overall

7.2

Entertainment

6.9

Food

6.6

Boarding

7.4

Crew

8.0

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.

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 5h 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 (£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, 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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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 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£172Average£270FlexibilityNo 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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