Cheap Flights from Forest (GCI) to London (LHR)

Compare Guernsey to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Guernsey to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Guernsey Airport to London Heathrow Airport? If you want to travel next month, return fares start from $199. Find the lowest prices on one-way and return tickets right here.

London.$193 per passenger.Departing Sat, 23 Jan, returning Sat, 30 Jan.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Sat, 23 Jan, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Sat, 30 Jan, arriving in Guernsey.Price includes taxes and charges.From $193, select.

London.$193 per passenger.Departing Wed, 11 Nov, returning Fri, 20 Nov.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Wed, 11 Nov, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Fri, 20 Nov, arriving in Guernsey.Price includes taxes and charges.From $193, select.

London.$194 per passenger.Departing Mon, 12 Oct, returning Sun, 18 Oct.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Mon, 12 Oct, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Sun, 18 Oct, arriving in Guernsey.Price includes taxes and charges.From $194, select.

London.$195 per passenger.Departing Tue, 5 Jan, returning Tue, 9 Mar.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Tue, 5 Jan, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Tue, 9 Mar, arriving in Guernsey.Price includes taxes and charges.From $195, select.

London.$199 per passenger.Departing Tue, 29 Sep, returning Wed, 30 Sep.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Tue, 29 Sep, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Wed, 30 Sep, arriving in Guernsey.Price includes taxes and charges.From $199, select.

London.$203 per passenger.Departing Tue, 6 Oct, returning Tue, 10 Nov.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Tue, 6 Oct, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Tue, 10 Nov, arriving in Guernsey.Price includes taxes and charges.From $203, select.

London.$205 per passenger.Departing Sun, 6 Dec, returning Tue, 8 Dec.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Sun, 6 Dec, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Tue, 8 Dec, arriving in Guernsey.Price includes taxes and charges.From $205, select.

London.$214 per passenger.Departing Tue, 23 Mar, returning Tue, 30 Mar.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Tue, 23 Mar, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Tue, 30 Mar, arriving in Guernsey.Price includes taxes and charges.From $214, select.

London.$217 per passenger.Departing Wed, 10 Mar, returning Thu, 29 Apr.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Wed, 10 Mar, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Thu, 29 Apr, arriving in Guernsey.Price includes taxes and charges.From $217, select.

London.$218 per passenger.Departing Tue, 23 Feb, returning Tue, 2 Mar.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Tue, 23 Feb, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Tue, 2 Mar, arriving in Guernsey.Price includes taxes and charges.From $218, select.

London.$224 per passenger.Departing Sat, 8 Aug, returning Mon, 28 Sep.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Sat, 8 Aug, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Mon, 28 Sep, arriving in Guernsey.Price includes taxes and charges.From $224, select.

London.$228 per passenger.Departing Mon, 10 Aug, returning Mon, 17 Aug.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Mon, 10 Aug, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Mon, 17 Aug, arriving in Guernsey.Price includes taxes and charges.From $228, select.

London.$240 per passenger.Departing Sat, 3 Jul, returning Sat, 17 Jul.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Sat, 3 Jul, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Sat, 17 Jul, arriving in Guernsey.Price includes taxes and charges.From $240, select.

London.$253 per passenger.Departing Thu, 3 Dec, returning Tue, 5 Jan.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Thu, 3 Dec, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Tue, 5 Jan, arriving in Guernsey.Price includes taxes and charges.From $253, select.

London.$276 per passenger.Departing Fri, 19 Feb, returning Mon, 22 Feb.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Fri, 19 Feb, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Mon, 22 Feb, arriving in Guernsey.Price includes taxes and charges.From $276, select.

London.$290 per passenger.Departing Fri, 23 Apr, returning Fri, 30 Apr.Return flight with British Airways.Outbound direct flight with British Airways departs from Guernsey on Fri, 23 Apr, arriving in London Heathrow.Inbound direct flight with British Airways departs from London Heathrow on Fri, 30 Apr, arriving in Guernsey.Price includes taxes and charges.From $290, select.

Find the cheapest month to fly from Guernsey to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Guernsey to London Heathrow flights are currently cheapest in November.

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Direct flights from Guernsey to London Heathrow

Guernsey to London Heathrow: Alternative routes

Compare routes from Guernsey to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Forest to London: Flight information

The things to know before you go.

Cheapest flight found	$193
Cheapest month to fly	January
Average flight time	1 hr, 5 mins
Most popular airline	Qatar Airways
Average flights per week	14

Finding cheap flights from Guernsey to London Heathrow: Frequently asked questions

How much are return flights from Guernsey to London Heathrow?

The best price we found for a return flight from Guernsey to London Heathrow is $193. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Guernsey to London Heathrow?

1 hour and 5 minutes is the average flight time from Guernsey to London Heathrow.

Which airlines fly direct from Guernsey to London Heathrow?

Qatar Airways and British Airways fly direct from Guernsey to London Heathrow.

How many flights are there a week from Guernsey to London Heathrow?

As of August 2026, there are 14 flights per week flying from Guernsey to London Heathrow.

When is the cheapest time to fly from Guernsey to London Heathrow?

The cheapest month to fly from Guernsey to London Heathrow is usually January.

Which upcoming date is cheapest to fly from Guernsey Airport to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Guernsey Airport to London Heathrow Airport on Saturday, 23 January 2027.

Can I get a direct flight from Guernsey Airport to London Heathrow Airport?

Yes – the average flight time is 1 hour and 5 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Guernsey Airport to London Heathrow with?

Currently, British Airways offers the cheapest flight tickets to London Heathrow.

How to find cheap flights to London (LHR) from Forest (GCI) in 2024

Looking for cheap tickets from Guernsey to London Heathrow? Return tickets start from $193 and one-way flights to London Heathrow from Guernsey start from $72

Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets.
Compare flight deals to London from Forest from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to London start from $72 one-way.
Flex your dates to find the best GCI-LHR ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to London Heathrow from Guernsey.
Set up a Price Alert. You can easily track the fare of your cheap flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between Guernsey and London Heathrow? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results. Airlines that fly direct include: Qatar Airways
British Airways
Find the cheapest Business class flights from Guernsey and London Heathrow. We scour the internet for the best Business, Premium Economy and First Class flight fares to London, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Guernsey to London Heathrow flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Guernsey and London Heathrow whenever you want.

Combine your flight to London Heathrow from Guernsey with hotels and car hire

Once you've secured your cheap flight ticket from Guernsey to London Heathrow, discover the best prices and exclusive rates for hotels in London or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.