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

Book the best London Heathrow fare with no extra fees

Flight deals from Guernsey to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Guernsey to London Heathrow? Find the lowest prices on one-way and return tickets right here.

London.$707 per passenger.Departing Sun, 29 Jun, returning Tue, 1 Jul.Return flight with Aurigny and British Airways.Outbound indirect flight with Aurigny, departs from Guernsey on Sun, 29 Jun, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Tue, 1 Jul, arriving in Guernsey.Price includes taxes and charges.From $707, select.

London.$809 per passenger.Departing Sun, 4 May, returning Sun, 11 May.Return flight with Aurigny and Aer Lingus.Outbound indirect flight with Aurigny, departs from Guernsey on Sun, 4 May, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departs from London Heathrow on Sun, 11 May, arriving in Guernsey.Price includes taxes and charges.From $809, select.

London.$885 per passenger.Departing Sun, 15 Jun, returning Sun, 22 Jun.Return flight with Aurigny and Aer Lingus.Outbound indirect flight with Aurigny, departs from Guernsey on Sun, 15 Jun, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departs from London Heathrow on Sun, 22 Jun, arriving in Guernsey.Price includes taxes and charges.From $885, 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 May.

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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	$707
Cheapest month to fly	June

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 $707. 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.

Which airlines fly direct from Guernsey to London Heathrow?

Currently, there are no airlines that fly direct from Guernsey to London Heathrow. But we found flights with one or more stops from $707.

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

As of May 2025, there are no flights 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 May 2025.

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 Sunday, 29 June 2025.

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

No airlines currently offer direct flights between Guernsey Airport and London Heathrow Airport. Most routes have one or more stops.

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, Aurigny offers the cheapest flight tickets to London Heathrow.

Flying from Guernsey Airport (GCI) to London Heathrow Airport (LHR): what you need to know

Get to the airport on time so you don't miss your GCI to LHR flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.
Flying during a peak month such as July? Major public holidays and other high seasons can lead to longer queues and delays at security. Play it safe and get there up to four hours before an international flight and two hours before domestic departures.
Break up your flight or explore another city along the way with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Guernsey Airport to London Heathrow Airport. Many passengers pass through Jersey Airport on this route.

How to find the cheapest flights from Guernsey Airport (GCI) to London Heathrow Airport (LHR)

At the moment, $265 is the lowest price we've found for a one-way Guernsey Airport to London Heathrow Airport flight. The best price for a return ticket is $707. Bear in mind that fares could change due to demand at the time of booking.
It's usually best to book ahead of time if you want to get cheap tickets from GCI to LHR. That's because flight prices are based on demand, which tends to rise closer to departure.
If you're willing to be flexible with your trip dates, try using the 'Whole month' search function. It'll show you the lowest price in each month when looking for your flight from Guernsey Airport to London Heathrow Airport.
Snapping up cheap flights from GCI to LHR is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as a lower fare pops up.
Tailor your flights with filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Guernsey Airport to London Heathrow Airport.

Handy information about Guernsey Airport (GCI)

56.3% of flights leaving from Guernsey Airport reach their destination on time.

Arriving at London Heathrow Airport (LHR)

Consider booking a hotel close to LHR if you have a late Guernsey Airport to London Heathrow Airport flight. Settle into one of these accommodation options and skip the long transfer:
Pick up a London Heathrow Airport rental car and discover London and beyond with your own wheels. Surprice, U-Save and Green Motion are popular providers you can book with here.
To get the best deal, book your vehicle from London Heathrow Airport about one week in advance.

Getting from London Heathrow Airport (LHR) to central London

From London Heathrow Airport, London is approximately 31 kilometres away. It takes around 55 minutes to get to the centre driving.
Getting to the centre on public transport will take you around 1 hour.

When to fly to London Heathrow Airport (LHR)

It's time to choose your dates for your flight from Guernsey Airport to London Heathrow Airport. July is the most popular month to visit London. If you want a more relaxed vibe, go in February.
When booking your flight from Guernsey Airport to London Heathrow Airport, think about the kind of weather you like. July is the warmest month in London, with the temperature ranging from 11ºC (52ºF) to 26ºC (79ºF).
Search for cheap tickets from GCI to LHR in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

Explore more of United Kingdom

You've visited London, now it's time to explore other parts of United Kingdom. Travel around 161 kilometres north-west to Birmingham to check off its top sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, there's plenty to keep you busy.
Around 177 kilometres west of London, Bristol is another favourite stop in United Kingdom. Experience major highlights starting with Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.