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Cheap flights from Glasgow Intl Airport to London Heathrow Airport from £35

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Glasgow Intl to London Heathrow are usually found in February or January, booked 87 days in advance, depart on a Friday or Wednesday and return on a Friday

Cheap flight deals from Glasgow Intl to Heathrow

Enter your travel dates to find the best prices.

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 10 March 2026.

Thu 16/413:20
GLA
-
LHR
Nonstop1h 30m
British Airways
Mon 20/406:30
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 5/3£87
Sat 21/308:40
GLA
-
LHR
Nonstop1h 35m
British Airways
Sun 22/306:55
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 9/3£88
Mon 6/405:50
GLA
-
LHR
Nonstop1h 35m
British Airways
Mon 13/420:05
LHR
-
GLA
Nonstop1h 20m
British Airways
Deal found 9/3£91
Fri 10/415:25
GLA
-
LHR
Nonstop1h 30m
British Airways
Mon 27/406:30
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 5/3£92
Sat 21/312:45
GLA
-
LHR
Nonstop1h 30m
British Airways
Sat 28/319:55
LHR
-
GLA
Nonstop1h 30m
British Airways
Deal found 5/3£94
Sat 25/419:45
GLA
-
LHR
Nonstop1h 20m
British Airways
Mon 27/406:30
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 8/3£95
Fri 3/405:50
GLA
-
LHR
Nonstop1h 35m
British Airways
Sun 5/415:30
LHR
-
GLA
Nonstop1h 30m
British Airways
Deal found 5/3£97
Sat 21/311:40
GLA
-
LHR
Nonstop1h 35m
British Airways
Sun 29/307:55
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 9/3£97

Find flight deals from Glasgow Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 March 2026.

Round-trip from

£87

One-way from

£35

Popular in

June

Cheapest in

February

Average price

£121

Good round-trip deal

£346 or less

Good one-way deal

£147 or less
British Airways
  • British Airways
  • 16/4-20/4
  • Nonstop
  • 2h 55m total
  • Glasgow to London
Search Deals
British Airways
  • British Airways
  • 12/5
  • Nonstop
  • 1h 35m total
  • Glasgow to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Glasgow Intl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Glasgow Intl to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow Intl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 March 2026.
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

Tue 24/3

14:00-15:30

Nonstop1h 30m

London Heathrow

Sun 29/3

07:55-09:20

Nonstop1h 25m

£97

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 20/3

11:40-13:15

Nonstop1h 35m

London Heathrow

Sun 22/3

08:00-09:25

Nonstop1h 25m

£103

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 28/8

05:50-07:25

Nonstop1h 35m

London Heathrow

Tue 1/9

06:15-07:40

Nonstop1h 25m

£103

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 31/7

07:00-08:35

Nonstop1h 35m

London Heathrow

Mon 3/8

07:45-09:10

Nonstop1h 25m

£103

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 24/4

17:05-18:30

Nonstop1h 25m

London Heathrow

Fri 1/5

06:15-07:40

Nonstop1h 25m

£111
Fastest return journey

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 13/8

20:50-22:10

Nonstop1h 20m

London Heathrow

Sat 15/8

20:55-22:15

Nonstop1h 20m

£112

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 7/4

21:10-22:40

Nonstop1h 30m

London Heathrow

Tue 14/4

18:20-19:40

Nonstop1h 20m

£116

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 19/3

12:45-14:15

Nonstop1h 30m

London Heathrow

Mon 23/3

21:00-22:30

Nonstop1h 30m

£123

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 15/5

05:50-07:25

Nonstop1h 35m

London Heathrow

Mon 18/5

06:30-07:55

Nonstop1h 25m

£124

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 22/5

17:05-18:30

Nonstop1h 25m

London Heathrow

Mon 25/5

06:30-07:55

Nonstop1h 25m

£135

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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

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

Use this chart to determine the optimal time to book a return flight from Glasgow Intl to Heathrow. Price data was last updated on 6 March 2026.

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 67 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, November is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £70). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £85). 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?

Find hourly flight availability from Glasgow Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 March 2026.

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 29% 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?

Use this chart to determine the cheapest time to fly return from Glasgow Intl to Heathrow. Price data was last updated on 21 February 2026.

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

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 10 March 2026.
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
1,468 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

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
1,468 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

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
1,884 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

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
7,781 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

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

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?

    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 £80 and £163 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 Qatar Airways (88%), British Airways (88%) and American Airlines (87%).

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

    On average you can expect to pay £1,448 for a flight from Glasgow Intl Airport to London Heathrow Airport. The cheapest flight overall is £67 while the most popular route, (Glasgow Intl - London Heathrow) is currently priced at £88.

  • 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, November is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £70). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £85). 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
Milton Keynes
Wembley
Croydon
Northampton
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Chelmsford
Eastbourne
Ipswich
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

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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 10 March 2026.
British Airways flights from Glasgow Intl to London Heathrow
easyJet flights from Glasgow Intl to London Heathrow
KLM flights from Glasgow Intl to London Heathrow

Top 3 airlines flying from Glasgow Intl to Heathrow

Discover the top 3 airlines that operate flights from Glasgow Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£29Average£86FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£80Average£129FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£163Average£220FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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