What is the most punctual flight time for Glasgow to London flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

Which airline has the best punctuality record on Glasgow to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 10% of flights being delayed.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

How often are flights from Glasgow to London delayed?

About 10% of weekly flights between Glasgow and London have experienced delays in the past year, with the average delay time being 95 minutes.

How long is the flight from Glasgow Intl Airport to London Heathrow Airport?

There are many flights that can get you from Glasgow Intl Airport to London Heathrow Airport in 1h 30m. Fly via British Airways to get the fastest option. The distance between Glasgow Intl Airport and London Heathrow Airport is about 345 mi. Most flights are nonstop.

What are the cheapest airlines flying from Glasgow Intl Airport to London Heathrow Airport round-trip?

Our cheapest airline available from Glasgow Intl Airport to London Heathrow Airport is easyJet. Our recent data shows that you can find tickets from as low as £29 on this airline. Additional options worth looking into are British Airways and KLM, starting at £84 and £161 round-trip. Users have found that easyJet is 77% cheaper than the other options available to this destination.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the cheapest flights from Glasgow Intl Airport to London Heathrow Airport?

On average you can expect to pay £1,423 for a flight from Glasgow Intl Airport to London Heathrow Airport. The cheapest flight overall is £81 while the most popular route, (Glasgow Intl - London Heathrow) is currently priced at £97.

What are the most reliable airlines from Glasgow Intl Airport to London Heathrow Airport?

The top 3 most reliable airlines when flying from Glasgow Intl Airport to London Heathrow Airport are American Airlines (92%), Malaysia Airlines (92%) and Finnair (92%).

What are the most popular airlines that fly from Glasgow Intl Airport to London Heathrow Airport?

When booking a flight from Glasgow Intl Airport to London Heathrow Airport, you may want to consider flying on British Airways, easyJet or KLM as they are the most popular for this route.

Can I find deals for flights from Glasgow Intl to Heathrow that include hotel bookings?

Yes. In addition to deals on Glasgow Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Glasgow Intl to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow Intl to Heathrow.

Can I find deals for business class flights from Glasgow Intl to Heathrow?

Yes. Cheapflights offers flight deals from Glasgow Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£62+ Cheap Flights from Glasgow Intl Airport to London Heathrow Airport

Q: How much does it cost for a return flight from Glasgow Intl Airport to London Heathrow Airport?

Airfare is below average for this route at the moment. Glasgow Intl Airport to London Heathrow Airport flights typically cost between £174 and £111 in May. The cheapest return flight price found within the last 3 days was £92 on British Airways (8 May-12 May).

Cheapflights Tip: The best prices from Glasgow Intl to London Heathrow are usually found in February or January, booked 73 days in advance, depart on a Friday or Tuesday and return on a Saturday

Cheap flight deals from Glasgow Intl to Heathrow

Enter your travel dates to find the best prices.

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Cheapest flights from Glasgow Intl to Heathrow
Explore the most affordable flight options available from Glasgow Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Fri 8/512:20

GLA

LHR

Nonstop1h 25m

British Airways

Tue 12/516:10

LHR

GLA

Nonstop1h 30m

British Airways

Deal found 22/4£92

Wed 24/607:30

GLA

LHR

Nonstop1h 35m

British Airways

Sun 28/613:20

LHR

GLA

Nonstop1h 30m

British Airways

Deal found 22/4£95

Fri 22/514:40

GLA

LHR

Nonstop1h 30m

British Airways

Mon 25/518:15

LHR

GLA

Nonstop1h 20m

British Airways

Deal found 24/4£97

Tue 19/510:55

GLA

LHR

Nonstop1h 30m

British Airways

Tue 26/521:00

LHR

GLA

Nonstop1h 20m

British Airways

Deal found 21/4£98

Sun 24/521:15

GLA

LHR

Nonstop1h 20m

British Airways

Sun 31/521:05

LHR

GLA

Nonstop1h 15m

British Airways

Deal found 24/4£100

Fri 22/508:35

GLA

LHR

Nonstop1h 35m

British Airways

Tue 26/517:10

LHR

GLA

Nonstop1h 30m

British Airways

Deal found 23/4£102

Mon 1/605:50

GLA

LHR

Nonstop1h 35m

British Airways

Mon 8/621:05

LHR

GLA

Nonstop1h 20m

British Airways

Deal found 20/4£103

Wed 28/1020:25

GLA

LHR

Nonstop1h 20m

British Airways

Tue 3/1108:25

LHR

GLA

Nonstop1h 25m

British Airways

Deal found 22/4£104

Fri 10/705:50

GLA

LHR

Nonstop1h 35m

British Airways

Mon 13/706:30

LHR

GLA

Nonstop1h 25m

British Airways

Deal found 21/4£104

Sat 9/519:45

GLA

LHR

Nonstop1h 20m

British Airways

Sun 10/521:05

LHR

GLA

Nonstop1h 15m

British Airways

Deal found 21/4£105

Find flight deals from Glasgow Intl to Heathrow

Round-trip from	£92
One-way from	£62
Popular in	June
Cheapest in	February
Average price	£136
Good round-trip deal	£287 or less
Good one-way deal	£150 or less

British Airways
8/5-12/5
Nonstop
2h 55m total
Glasgow to London

Search Deals

British Airways
27/9
Nonstop
1h 20m total
Glasgow to London

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£12 potential increase over avg. return price).

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Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2026

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Price to beat on a round-trip flight from Glasgow Intl to London Heathrow.

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Price to beat on a one-way flight from Glasgow Intl to London Heathrow.

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Glasgow Intl Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 5/6

11:50-13:20

Nonstop1h 30m

London Heathrow

Fri 12/6

06:15-07:40

Nonstop1h 25m

£103

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 1/6

09:05-10:40

Nonstop1h 35m

London Heathrow

Mon 8/6

21:05-22:25

Nonstop1h 20m

£103

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 13/5

11:50-13:20

Nonstop1h 30m

London Heathrow

Mon 8/6

21:05-22:25

Nonstop1h 20m

£107

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 15/5

08:35-10:10

Nonstop1h 35m

London Heathrow

Mon 18/5

21:05-22:25

Nonstop1h 20m

£108

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 28/8

05:50-07:25

Nonstop1h 35m

London Heathrow

Fri 28/8

21:15-22:30

Nonstop1h 15m

£116

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 11/9

05:50-07:25

Nonstop1h 35m

London Heathrow

Fri 11/9

17:20-18:50

Nonstop1h 30m

£127

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 6/7

15:35-17:00

Nonstop1h 25m

London Heathrow

Mon 6/7

20:05-21:25

Nonstop1h 20m

£139

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 15/5

14:40-16:10

Nonstop1h 30m

London Heathrow

Sat 16/5

18:55-20:15

Nonstop1h 20m

£141

Fastest return journey

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 26/6

19:40-21:00

Nonstop1h 20m

London Heathrow

Sun 28/6

22:15-23:30

Nonstop1h 15m

£142

Cheapest one-way

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sun 9/8

06:00-07:35

Nonstop1h 35m

£67

Flights are sorted by cheapest return flights first.

Deals found on 24/4

Showing 1-10 of 15 resultsSorted by cheapest first

Best time to book a flight from Glasgow Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Glasgow Intl with our price prediction graph.

GLA-LHR

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 Glasgow Intl Airport to London Heathrow Airport

Prices

Delays

How far ahead should I book a flight from Glasgow Intl Airport to London Heathrow Airport?

To ensure you get the cheapest price possible for a flight from Glasgow Intl Airport to London Heathrow Airport, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Glasgow Intl Airport to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £111). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £169). 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.

What is the cheapest time of day to fly from GLA to LHR?

A simple way to save on the total cost of your ticket is to fly from Glasgow Intl Airport to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Glasgow Intl Airport to London Heathrow Airport?

Travellers seeking maximum savings on their Glasgow Intl Airport to London Heathrow Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from Glasgow Intl Airport to London Heathrow Airport?

Reviews of airlines servicing Heathrow

See what other customers who have flown with KLM,easyJet, andBritish Airways from Glasgow Intl Airport to London Heathrow Airport have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,508 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

KLM

7.8

Good

1,508 reviews

KLM

7.8

Good

1,508 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

easyJet

6.9

Okay

1,895 reviews

KLM

7.8

Good

1,508 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

British Airways

6.7

Okay

7,912 reviews

KLM

7.8

Good

1,508 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

How long is the flight from Glasgow Intl Airport to London Heathrow Airport?
There are many flights that can get you from Glasgow Intl Airport to London Heathrow Airport in 1h 30m. Fly via British Airways to get the fastest option. The distance between Glasgow Intl Airport and London Heathrow Airport is about 345 mi. Most flights are nonstop.
What are the cheapest airlines flying from Glasgow Intl Airport to London Heathrow Airport round-trip?
Our cheapest airline available from Glasgow Intl Airport to London Heathrow Airport is easyJet. Our recent data shows that you can find tickets from as low as £29 on this airline. Additional options worth looking into are British Airways and KLM, starting at £84 and £161 round-trip. Users have found that easyJet is 77% cheaper than the other options available to this destination.
What are the most reliable airlines from Glasgow Intl Airport to London Heathrow Airport?
The top 3 most reliable airlines when flying from Glasgow Intl Airport to London Heathrow Airport are American Airlines (92%), Malaysia Airlines (92%) and Finnair (92%).
What are the cheapest flights from Glasgow Intl Airport to London Heathrow Airport?
On average you can expect to pay £1,423 for a flight from Glasgow Intl Airport to London Heathrow Airport. The cheapest flight overall is £81 while the most popular route, (Glasgow Intl - London Heathrow) is currently priced at £97.
Can I find deals for flights from Glasgow Intl to Heathrow that include hotel bookings?
Yes. In addition to deals on Glasgow Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Glasgow Intl to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow Intl to Heathrow.
Can I find deals for business class flights from Glasgow Intl to Heathrow?
Yes. Cheapflights offers flight deals from Glasgow Intl to Heathrow 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 Glasgow Intl Airport to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £111). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £169). 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.

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Top 3 airlines flying from Glasgow Intl to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£29	Average£79	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
British Airways	Cheapest£84	Average£130	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
KLM	Cheapest£161	Average£218	FlexibilityNo cancel fee	On-time75%	Search KLM flights

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How does Cheapflights help users find flights from Glasgow Intl to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Glasgow Intl today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Glasgow Intl to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Glasgow Intl to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Glasgow Intl to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Glasgow Intl to Heathrow become cheaper?

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Cheap flights from Glasgow Intl Airport to London Heathrow Airport from £62

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Glasgow Intl to Heathrow

Cheapest flights from Glasgow Intl to HeathrowExplore the most affordable flight options available from Glasgow Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Explore the most affordable flight options available from Glasgow Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Best flights from Glasgow Intl to HeathrowDiscover carefully curated flight deals from Glasgow Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 April 2026.

Discover carefully curated flight deals from Glasgow Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 April 2026.

Direct flights from Glasgow Intl to HeathrowExplore direct flight options from Glasgow Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 April 2026.

Explore direct flight options from Glasgow Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 April 2026.

Last-minute flights from Glasgow Intl to HeathrowDiscover last-minute flight deals from Glasgow Intl to Heathrow. Data last updated 25 April 2026 and is based on user searches.

Discover last-minute flight deals from Glasgow Intl to Heathrow. Data last updated 25 April 2026 and is based on user searches.

One-way flights from Glasgow Intl to HeathrowSearch for one-way flight options from Glasgow Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 April 2026.

Search for one-way flight options from Glasgow Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 April 2026.

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Use the filters below to find and compare flights from Glasgow Intl Airport to London Heathrow Airport that are best for you.

Best time to book a flight from Glasgow Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Glasgow Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Glasgow Intl Airport to London Heathrow Airport

How far ahead should I book a flight from Glasgow Intl Airport to London Heathrow Airport?

What is the cheapest month to book a flight from Glasgow Intl Airport to London Heathrow Airport?

What is the cheapest time of day to fly from GLA to LHR?

What is the cheapest day to fly from Glasgow Intl Airport to London Heathrow Airport?

How much does it cost for a return flight from Glasgow Intl Airport to London Heathrow Airport?

How often are flights from Glasgow to London delayed?

What is the most punctual flight time for Glasgow to London flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Glasgow to London flights?

Reviews of airlines servicing Heathrow

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Glasgow Intl Airport to London Heathrow Airport?

What are the cheapest airlines flying from Glasgow Intl Airport to London Heathrow Airport round-trip?

What are the most reliable airlines from Glasgow Intl Airport to London Heathrow Airport?

What are the cheapest flights from Glasgow Intl Airport to London Heathrow Airport?

Can I find deals for flights from Glasgow Intl to Heathrow that include hotel bookings?

How can I find direct flights from Glasgow Intl to Heathrow?

Can I find deals for business class flights from Glasgow Intl to Heathrow?

What is the cheapest month to book a flight from Glasgow Intl Airport to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

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Fly from Glasgow Intl to Heathrow on these airlines

Choose from the following airlines for your flight from Glasgow Intl to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 25 April 2026.

Alternative routes for Glasgow Intl to Heathrow

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Complete your trip

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Search flights from Glasgow Intl to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 25 April 2026.

Glasgow Intl and Heathrow flights

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Browse through other flights departing from Glasgow Intl. Flights are based on user searches made on Cheapflights and were last updated on 25 April 2026.

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Top 3 airlines flying from Glasgow Intl to Heathrow

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Cheapest flights from Glasgow Intl to Heathrow
Explore the most affordable flight options available from Glasgow Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 April 2026.

Best flights from Glasgow Intl to Heathrow
Discover carefully curated flight deals from Glasgow Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 April 2026.

Direct flights from Glasgow Intl to Heathrow
Explore direct flight options from Glasgow Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 April 2026.

Last-minute flights from Glasgow Intl to Heathrow
Discover last-minute flight deals from Glasgow Intl to Heathrow. Data last updated 25 April 2026 and is based on user searches.

One-way flights from Glasgow Intl to Heathrow
Search for one-way flight options from Glasgow Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 April 2026.