Cheap flights from Glasgow to London Heathrow

from as little as £112

29 nights in London, departing Glasgow on 22 / Mar / 2026 with British Airways (price found 42 hours ago)

Subject to availability, prices correct of the last 24 hours
London Heathrow

Cheap return flights from Glasgow to London Heathrow

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The Glasgow / London Heathrow route

All 554 km of it

Cheap flight deals for this route

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London Heathrow flight facts

What you need to know

Alternative flights from the UK to London Heathrow

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London Heathrow

Today alone, Netflights has searched over 2,800 flights. 22 / Mar / 2026 is currently the lowest priced day of the year to fly the Glasgow/London Heathrow route. There are around 718 flights on any given week from the UK to London Heathrow and the cheapest month to fly right now is March.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

2 °C

AVG

11 °C

HIGHEST

24 °C

Rainfall (mm)
LOWEST

38.1 mm

AVG

52.5 mm

HIGHEST

66 mm

Key facts about London Heathrow

How to get cheap flights from Glasgow to London Heathrow

Tips and advice from our flight experts

We've scanned every flight from Glasgow to London to find the best deals. If you want a cheap flight, it's best to be as flexible as you can on dates. At the moment, the cheapest flight is on 22 / Mar / 2026. If that day's no good for you, try searching by month to see some alternative dates.

You can use the filters on your search to see more flights and find cheaper rates – London has more than one airport. So if you don't need to fly into London Heathrow, it's worth checking your other options. The 554 km flight usually takes about 3 hrs 10 mins.

There are about 718 flights to or via London every week, so you have plenty of options. Keep your eye out for flights with British Airways, Aer Lingus and Loganair – these are the most popular airlines for flying to .

During this peak season, hotel and holiday prices often increase too, so it's best to book early. Or you could keep your fingers crossed and hold out for a last-minute deal.

Other popular destinations near London Heathrow

Where other people are flying to

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