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Cheap flights from Glasgow Intl Airport to London Heathrow Airport from C$ 113

GLA — LHR
5 Oct — 12 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Glasgow Intl to London Heathrow are usually found in February or March, booked 41 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Glasgow Intl to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow Intl to Heathrow

Sat 7/114:05 p.m. -
Nonstop1h 25m
Thu 12/116:20 a.m. -
Nonstop1h 25m
Deal found 1/9C$ 195
Thu 8/109:20 p.m. -
Nonstop1h 20m
Mon 12/107:45 a.m. -
Nonstop1h 25m
Deal found 3/9C$ 196
Fri 30/108:25 p.m. -
Nonstop1h 20m
Fri 6/116:25 a.m. -
Nonstop1h 25m
Deal found 31/8C$ 198
Sat 3/107:45 p.m. -
Nonstop1h 20m
Sat 10/108:55 p.m. -
Nonstop1h 20m
Deal found 3/9C$ 204
Sat 24/1010:25 a.m. -
Nonstop1h 30m
Sun 25/106:45 a.m. -
Nonstop1h 25m
Deal found 3/9C$ 207
Tue 3/117:10 a.m. -
Nonstop1h 35m
Sun 15/116:45 a.m. -
Nonstop1h 25m
Deal found 3/9C$ 209
Sat 31/106:50 p.m. -
Nonstop1h 20m
Thu 5/116:20 a.m. -
Nonstop1h 25m
Deal found 31/8C$ 211
Fri 2/107:40 p.m. -
Nonstop1h 20m
Fri 9/105:20 p.m. -
Nonstop1h 30m
Deal found 4/9C$ 213
Thu 1/109:20 p.m. -
Nonstop1h 20m
Tue 13/107:20 a.m. -
Nonstop1h 25m
Deal found 31/8C$ 214
Thu 1/106:40 p.m. -
Nonstop1h 20m
Thu 8/104:20 p.m. -
Nonstop1h 30m
Deal found 31/8C$ 216
Mon 28/123:30 p.m. -
Nonstop1h 25m
Tue 29/122:55 p.m. -
Nonstop1h 30m
Deal found 3/9C$ 217
Tue 8/1212:40 p.m. -
Nonstop1h 35m
Fri 11/127:05 a.m. -
Nonstop1h 25m
Deal found 2/9C$ 218

Find flight deals from Glasgow Intl to Heathrow

Round-trip from

C$ 195

One-way from

C$ 113

Popular in

June

Cheapest in

February

Average price

C$ 271

Good one-way deal

C$ 341 or less
British Airways
  • British Airways
  • 7/11-12/11
  • Nonstop
  • 2h 50m total
  • Glasgow to London
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31/10-31/12
  • 31/10-31/12
  • 1 total stop
  • 4h 25m total
  • Glasgow to London
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Highest demand for flights based on searches. 9% potential increase in price (C$ 35 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 10 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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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 round-trip

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Tue 10/11

12:40 p.m.-2:15 p.m.

Nonstop1h 35m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 126

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Tue 24/11

7:10 a.m.-8:45 a.m.

Nonstop1h 35m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 127

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Wed 25/11

2:05 p.m.-3:40 p.m.

Nonstop1h 35m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 127

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Wed 30/12

5:45 a.m.-7:20 a.m.

Nonstop1h 35m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 127

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Thu 10/12

5:20 a.m.-6:55 a.m.

Nonstop1h 35m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 127

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Tue 1/12

12:40 p.m.-2:15 p.m.

Nonstop1h 35m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 128
Quickest round-trip

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Thu 1/10

12:40 p.m.-2:10 p.m.

Nonstop1h 30m

London Heathrow

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 206

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Tue 8/12

7:10 a.m.-8:45 a.m.

Nonstop1h 35m

London Heathrow

Fri 11/12

3:20 p.m.-4:50 p.m.

Nonstop1h 30m

C$ 216

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Fri 6/11

4:00 p.m.-5:25 p.m.

Nonstop1h 25m

London Heathrow

Fri 6/11

9:10 p.m.-10:35 p.m.

Nonstop1h 25m

C$ 225

GlasgowLondon

GLA Glasgow Intl - LHR London Heathrow

GLALHR

Glasgow Intl

Tue 15/9

7:30 p.m.-8:50 p.m.

Nonstop1h 20m

London Heathrow

Wed 14/10

9:10 p.m.-10:25 p.m.

Nonstop1h 15m

C$ 251

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 18 resultsSorted by cheapest first
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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.
Estimated round-trip price

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?

The price you pay for your flight from Glasgow Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 207). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of C$ 316). 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?

It’s typically best to fly out from Glasgow Intl Airport to London Heathrow Airport in the evening. Doing so could potentially save you 70% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip 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 C$ 210 and C$ 344 in November.
The cheapest round-trip price found within the last 5 days was C$ 195 on British Airways (7 Nov-12 Nov).

Related info for your journey

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

    Departing from Glasgow Intl Airport to London Heathrow Airport will take you 1h 35m. Airlines will cover a distance of 555 km. Generally, flights for this route are direct.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Glasgow Intl Airport to London Heathrow Airport on time: American Airlines (91%), Royal Air Maroc (85%), British Airways (85%).

  • 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 vacation 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 C$ 207). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of C$ 316). 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Slough
Marlow
Cobham
Hounslow
Leamington Spa
Northampton
Watford
High Wycombe
Stratford-upon-Avon
Moreton-in-Marsh

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Yes! Start tracking prices for Glasgow Intl to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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