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Cheap flights from Glasgow Intl Airport to London Heathrow Airport from £56

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
28 Aug — 4 Sep1
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 41 days in advance, depart on a Friday or Saturday and return on a Saturday

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 29 July 2026.

Tue 29/921:10
GLA
-
LHR
Nonstop1h 30m
British Airways
Tue 6/1006:15
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 29/7£101
Wed 9/919:40
GLA
-
LHR
Nonstop1h 20m
British Airways
Wed 16/907:10
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 26/7£102
Thu 3/919:30
GLA
-
LHR
Nonstop1h 20m
British Airways
Sun 6/922:15
LHR
-
GLA
Nonstop1h 15m
British Airways
Deal found 29/7£102
Tue 1/919:30
GLA
-
LHR
Nonstop1h 20m
British Airways
Tue 29/906:15
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 26/7£104
Thu 3/918:40
GLA
-
LHR
Nonstop1h 20m
British Airways
Mon 7/906:30
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 29/7£105
Sun 23/806:00
GLA
-
LHR
Nonstop1h 35m
British Airways
Sun 30/807:55
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 26/7£106
Thu 27/820:50
GLA
-
LHR
Nonstop1h 20m
British Airways
Sun 30/807:55
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 25/7£108
Fri 28/805:50
GLA
-
LHR
Nonstop1h 35m
British Airways
Tue 1/913:20
LHR
-
GLA
Nonstop1h 30m
British Airways
Deal found 28/7£108
Thu 26/1113:40
GLA
-
LHR
Nonstop1h 35m
British Airways
Sun 29/1106:55
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 27/7£109

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 29 July 2026.

Round-trip from

£101

One-way from

£56

Popular in

June

Cheapest in

February

Average price

£141

Good round-trip deal

£464 or less

Good one-way deal

£78 or less
British Airways
  • British Airways
  • 29/9-5/10
  • Nonstop
  • 2h 45m total
  • Glasgow to London
Search Deals
British Airways
  • British Airways
  • 20/10
  • Nonstop
  • 1h 30m total
  • Glasgow to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 29 July 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

Thu 10/9

20:50-22:10

Nonstop1h 20m

London Heathrow

Fri 18/9

06:15-07:40

Nonstop1h 25m

£105
Fastest return journey

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 12/9

19:45-21:05

Nonstop1h 20m

London Heathrow

Sat 19/9

21:55-23:10

Nonstop1h 15m

£117

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 6/10

17:10-18:35

Nonstop1h 25m

London Heathrow

Tue 6/10

22:05-23:20

Nonstop1h 15m

£124

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 16/9

19:40-21:00

Nonstop1h 20m

London Heathrow

Sat 19/9

20:55-22:15

Nonstop1h 20m

£129

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 16/9

14:05-15:35

Nonstop1h 30m

London Heathrow

Thu 17/9

07:25-08:50

Nonstop1h 25m

£129

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 17/9

20:50-22:10

Nonstop1h 20m

London Heathrow

Sun 20/9

20:20-21:40

Nonstop1h 20m

£129

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sun 9/8

07:35-09:10

Nonstop1h 35m

London Heathrow

Sun 16/8

20:20-21:40

Nonstop1h 20m

£152

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 16/9

06:00-10:45

1 stop4h 45m

London Heathrow

Wed 30/9

09:55-16:10

1 stop6h 15m

£190

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sun 9/8

07:35-09:10

Nonstop1h 35m

London Heathrow

Wed 12/8

15:15-16:45

Nonstop1h 30m

£193

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 26/9

06:35-08:10

Nonstop1h 35m

London Heathrow

Sat 26/9

21:55-23:10

Nonstop1h 15m

£217

Flights are sorted by cheapest return flights first.

Deals found on 26/7

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?

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 40 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 £173). 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 29 July 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 25% 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 25 July 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?

Airfare is below average for this route at the moment.

Glasgow Intl Airport to London Heathrow Airport flights typically cost between £117 and £202 in September.
The cheapest return price found within the last 5 days was £101 on British Airways (29 Sept–5 Oct).

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 29 July 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
1,551 reviews
Check prices

Overall

7.8

Crew

8.4

Comfort

7.7

Food

7.3

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.8
Good
1,551 reviews
KLM
7.8
Good
1,551 reviews
Check prices

Overall

7.8

Crew

8.4

Comfort

7.7

Food

7.3

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
easyJet
6.9
Okay
1,919 reviews
KLM
7.8
Good
1,551 reviews
Check prices

Overall

7.8

Crew

8.4

Comfort

7.7

Food

7.3

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
8,126 reviews
KLM
7.8
Good
1,551 reviews
Check prices

Overall

7.8

Crew

8.4

Comfort

7.7

Food

7.3

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 20m. 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 £27 on this airline. Additional options worth looking into are British Airways and KLM, starting at £94 and £164 round-trip. Users have found that easyJet is 80% 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 (87%), Qatar Airways (86%) and Japan Airlines (85%).

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

    On average you can expect to pay £1,511 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 £102.

  • 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 £173). 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
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Enfield
Kingston upon Thames
Poole
Southall

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 29 July 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 29 July 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£27Average£67FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£94Average£136FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£164Average£213FlexibilityNo 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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