Cheap Flights from Glasgow Intl to London Heathrow

Compare Glasgow Intl 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 Glasgow Intl to London Heathrow

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

London.R 1,197 per passenger.Departing Wed, 9 Dec.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Wed, 9 Dec, arriving in London Heathrow.Price includes taxes and charges.From R 1,197, select.

London.R 1,224 per passenger.Departing Sat, 9 Jan.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Sat, 9 Jan, arriving in London Heathrow.Price includes taxes and charges.From R 1,224, select.

London.R 1,269 per passenger.Departing Sat, 14 Mar.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Sat, 14 Mar, arriving in London Heathrow.Price includes taxes and charges.From R 1,269, select.

London.R 1,359 per passenger.Departing Fri, 31 Jul.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Fri, 31 Jul, arriving in London Heathrow.Price includes taxes and charges.From R 1,359, select.

London.R 1,370 per passenger.Departing Sun, 1 Nov.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Sun, 1 Nov, arriving in London Heathrow.Price includes taxes and charges.From R 1,370, select.

London.R 1,373 per passenger.Departing Fri, 2 Oct.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Fri, 2 Oct, arriving in London Heathrow.Price includes taxes and charges.From R 1,373, select.

London.R 1,373 per passenger.Departing Wed, 26 Aug.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Wed, 26 Aug, arriving in London Heathrow.Price includes taxes and charges.From R 1,373, select.

London.R 1,373 per passenger.Departing Sun, 20 Sep.One-way flight with British Airways.Outbound direct flight with British Airways departs from Glasgow Intl on Sun, 20 Sep, arriving in London Heathrow.Price includes taxes and charges.From R 1,373, select.

Find the cheapest month to fly from Glasgow Intl to London Heathrow

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

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Direct flights from Glasgow Intl to London Heathrow

Glasgow Intl to London Heathrow: Alternative routes

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

Glasgow to London: Flight information

The things to know before you go.

Cheapest flight found	R 1,197
Cheapest month to fly	December
Average flight time	1 hr, 29 mins
Most popular airline	British Airways
Average flights per week	506

Check out these London Heathrow hotels

Ready to plan your stay? Other travellers rate these London Heathrow hotels for cleanliness, service and location.

Staybridge Suites London - Heathrow Bath Road by IHG

1.28 km from London Heathrow

R 1 672

Per night

Renaissance London Heathrow Hotel

1.07 km from London Heathrow

R 1 498

Per night

Holiday Inn London Heathrow - Bath Road by IHG

1.26 km from London Heathrow

R 1 455

Per night

Staybridge Suites London - Heathrow Bath Road by IHG

1.28 km from London Heathrow

R 1 672

Per night

Renaissance London Heathrow Hotel

1.07 km from London Heathrow

R 1 498

Per night

Holiday Inn London Heathrow - Bath Road by IHG

1.26 km from London Heathrow

R 1 455

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Finding cheap flights from Glasgow Intl to London Heathrow: Frequently asked questions

How much are return flights from Glasgow Intl to London Heathrow?

The best price we found for a return flight from Glasgow Intl to London Heathrow is R 1,859. 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 Glasgow Intl to London Heathrow?

1 hour and 29 minutes is the average flight time from Glasgow Intl to London Heathrow.

Which airlines fly direct from Glasgow Intl to London Heathrow?

British Airways, Qatar Airways and American Airlines fly direct from Glasgow Intl to London Heathrow.

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

As of February 2026, there are 506 flights per week flying from Glasgow Intl to London Heathrow.

When is the cheapest time to fly from Glasgow Intl to London Heathrow?

The cheapest month to fly from Glasgow Intl to London Heathrow is usually March.

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

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Glasgow Intl Airport to London Heathrow Airport on Wednesday, 25 March 2026.

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

Yes – the average flight time is 1 hour and 29 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 Glasgow Intl Airport to London Heathrow with?

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

Flying from Glasgow International Airport (GLA) to London Heathrow Airport (LHR): what you need to know

Take a direct flight from Glasgow International Airport to London Heathrow Airport and you'll be travelling for an average of 1 hour 25 minutes.
Glasgow and London are in the UTC+0 timezone. This means you won't have to change your watch when you arrive.
Take your pick of 338 weekly Glasgow International Airport to London Heathrow Airport flights. The 06:00 departure with British Airways is the earliest you can take. British Airways operates the last service of the day at 20:30.
Get to the airport on time so you don't miss your GLA to LHR flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.
During popular months such as June, you'll want to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're flying during a peak period in general.
British Airways offers direct flights from Glasgow International Airport to London Heathrow Airport. Book with this popular carrier, then get ready to discover the sights in London — and maybe even more of United Kingdom if you have time.
The airline most travellers prefer to fly with on this route is British Airways.
Among carriers operating GLA to LHR flights, British Airways has the highest percentage of on-time landings.
If you want to split up your journey, simply uncheck 'Direct flights only' when searching for your ticket from Glasgow International Airport to London Heathrow Airport. Here are the most popular stopovers between GLA and LHR:
- Dublin Airport
- Amsterdam Airport Schiphol
- George Best Belfast City Airport

How to find the cheapest flights from Glasgow International Airport (GLA) to London Heathrow Airport (LHR)

Right now, R 1,197 is the lowest price we've found for a one-way Glasgow International Airport to London Heathrow Airport flight. The best price for a return plane ticket is R 1,859. Keep in mind that fares could change due to availability when booking.
To score cheap tickets from GLA to LHR, book as early as you can. Airlines tend to offer their best fares when flights are first made available.
Plan your trip for November. That's the cheapest month for flights from Glasgow International Airport to London Heathrow Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the lowest price across each month.
Landing cheap flights from GLA to LHR is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when a new discounted fare appears.
Choose your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Glasgow International Airport to London Heathrow Airport.

Handy information about Glasgow International Airport (GLA)

70.07% of flights departing from Glasgow International Airport reach their destination on time.
Central Glasgow to Glasgow International Airport is around 14 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're driving, ride-sharing or catching a cab.
Planning to catch public transport? You can expect a journey time of around 35 minutes.
Get your holiday off to a hassle-free start by staying near GLA. Whether you're boarding an early flight from Glasgow International Airport to London Heathrow Airport or want to avoid feeling rushed, these hotels are ideal:

Arriving at London Heathrow Airport (LHR)

Consider staying in a hotel close to LHR if you're taking a late Glasgow International Airport to London Heathrow Airport flight. Check in to one of these accommodation options and skip the long transfer after landing:
Hit the road running by picking up a London Heathrow Airport rental car. Grab your wheels from Surprice, U-Save or Green Motion and explore beyond London's usual tourist stops.
Lock in the best rate by reserving your vehicle from London Heathrow Airport about one week before your travel date.

Getting from London Heathrow Airport (LHR) to central London

London Heathrow Airport to the centre of London has a drive time of about 55 minutes. It's approximately 31 kilometres away.
When travelling by public transport, expect a journey of about 1 hour.

When to fly to London Heathrow Airport (LHR)

The quietest month for a flight from Glasgow International Airport to London Heathrow Airport is February, while July is the most popular. Pick the ideal time to go to London based on whether you prefer a more relaxed vibe or a faster pace.
Lock in your flight from Glasgow International Airport to London Heathrow Airport for July if you want to go to London during its warmest month. You can expect temperatures of between 11ºC (52ºF) and 26ºC (79ºF).
Look for cheap tickets from GLA to LHR in January if you like cooler conditions. Temperatures are at their lowest 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 corners of United Kingdom. Travel about 161 kilometres north-west to Birmingham to check off its leading sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, your itinerary will be busy.
Bristol is another must-experience destination in United Kingdom and is around 177 kilometres west of London. No trip is complete without visiting Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.