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$83+ Cheap flights from Glasgow Intl (GLA) to Heathrow (LHR)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
May 25 — Jun 11
Mon 5/25
Mon 6/1
1 adult, Economy
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Find cheap flights from Glasgow Intl to Heathrow with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

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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 Sunday or Friday and return on a Thursday

Cheap flight deals from Glasgow Intl to Heathrow

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 April 25, 2026.

This British Airways deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:05 am
GLA
-
LHR
Nonstop1h 35m
British Airways
Mon 6/86:30 am
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 4/24$138
This British Airways deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/221:25 pm
GLA
-
LHR
Nonstop1h 30m
British Airways
Mon 5/259:50 pm
LHR
-
GLA
Nonstop1h 15m
British Airways
Deal found 4/21$145
This British Airways deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:35 am
GLA
-
LHR
Nonstop1h 35m
British Airways
Mon 5/189:05 pm
LHR
-
GLA
Nonstop1h 20m
British Airways
Deal found 4/20$146
This Expedia deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:40 pm
GLA
-
LHR
Nonstop1h 30m
British Airways
Thu 10/157:25 am
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 4/20$147
This British Airways deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:50 am
GLA
-
LHR
Nonstop1h 35m
British Airways
Mon 7/136:30 am
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 4/20$148
This British Airways deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:30 pm
GLA
-
LHR
Nonstop1h 20m
British Airways
Sun 7/1910:15 pm
LHR
-
GLA
Nonstop1h 15m
British Airways
Deal found 4/24$150
This British Airways deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:50 am
GLA
-
LHR
Nonstop1h 35m
British Airways
Mon 6/158:05 pm
LHR
-
GLA
Nonstop1h 20m
British Airways
Deal found 4/24$153
This British Airways deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:50 am
GLA
-
LHR
Nonstop1h 35m
British Airways
Tue 9/16:15 am
LHR
-
GLA
Nonstop1h 25m
British Airways
Deal found 4/20$154

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 April 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$138
(British Airways)

One-way from

$83
(Booking.com)

Popular in

June

Cheapest in

February

Average price

$184

Good round-trip deal

$614 or less

Good one-way deal

$130 or less
Provider with most accurate pricing for Glasgow Intl-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Glasgow Intl-London Heathrow flights.
Search Deals
From Glasgow Intl to London Heathrow
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One-way flight from Glasgow Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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

 
Customize 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 2,558,603 searches. Data last updated April 25, 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 round-trip

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 8/28

5:50 am-7:25 am

Nonstop1h 35m

London Heathrow

Tue 9/1

6:15 am-7:40 am

Nonstop1h 25m

$148

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 5/15

2:40 pm-4:10 pm

Nonstop1h 30m

London Heathrow

Mon 5/18

6:15 pm-7:35 pm

Nonstop1h 20m

$152

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 5/18

12:25 pm-1:55 pm

Nonstop1h 30m

London Heathrow

Mon 5/25

9:50 pm-11:05 pm

Nonstop1h 15m

$152

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 8/13

8:50 pm-10:10 pm

Nonstop1h 20m

London Heathrow

Sat 8/15

8:55 pm-10:15 pm

Nonstop1h 20m

$154

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 8/28

5:50 am-7:25 am

Nonstop1h 35m

London Heathrow

Fri 8/28

9:15 pm-10:30 pm

Nonstop1h 15m

$156
Quickest round-trip

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 7/3

7:40 pm-9:00 pm

Nonstop1h 20m

London Heathrow

Sun 7/5

10:15 pm-11:30 pm

Nonstop1h 15m

$163

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 6/12

7:40 pm-9:00 pm

Nonstop1h 20m

London Heathrow

Sun 6/21

10:15 pm-11:30 pm

Nonstop1h 15m

$167

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 7/31

6:15 pm-7:40 pm

Nonstop1h 25m

London Heathrow

Mon 8/3

6:30 am-7:55 am

Nonstop1h 25m

$176
Cheapest one-way

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 10/16

7:00 am-8:35 am

Nonstop1h 35m

$89
Quickest one-way

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 7/9

8:50 pm-10:10 pm

Nonstop1h 20m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Glasgow Intl to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Glasgow Intl to Heathrow in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Glasgow Intl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Glasgow Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Glasgow Intl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Glasgow Intl Airport-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Glasgow Intl Airport-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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
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 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 $150). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $228). 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 April 25, 2026.

One of the essential ways to save on airfare from Glasgow Intl Airport to London Heathrow Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 22% on airfare.

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 round-trip from Glasgow Intl to Heathrow. Price data was last updated on April 18, 2026.

Travelers 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 evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip 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 April 25, 2026.
Get a feel of what it's like to fly with British Airways from Glasgow Intl Airport to London Heathrow Airport by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,912 reviews

Boarding

6.9

Crew

7.7

Food

6.4

Entertainment

6.4

Overall

6.7

Comfort

6.8

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2026

NCE - LHR

I was transferred to AA airlines with seating far away from my wif.
British Airways
6.7
Okay
7,912 reviews
British Airways
6.7
Okay
7,912 reviews

Boarding

6.9

Crew

7.7

Food

6.4

Entertainment

6.4

Overall

6.7

Comfort

6.8

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2026

NCE - LHR

I was transferred to AA airlines with seating far away from my wif.

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 35m. Fly via British Airways to get the fastest option. The distance from Glasgow Intl Airport to London Heathrow Airport is about 345 mi. Generally, flights for this route are nonstop.

  • What is the cheapest airline to fly from Glasgow Intl Airport to London Heathrow Airport round-trip?

    British Airways, at $107, was found to be the cheapest airline from Glasgow Intl Airport to London Heathrow Airport.. This flight start at 38% lower than the current average price 3 months from now.

  • 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?

    Looking for the cheapest flight from Glasgow Intl Airport to London Heathrow Airport? While on average our users pay $1,161, our data indicates the cheapest price to be $92. The most popular route (Glasgow Intl - London Heathrow), is priced around $84.

  • 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 $150). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $228). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Glasgow Intl to Heathrow

Discover the top airline 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 2,558,603 searches. Data last updated April 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$107Average$183FlexibilityNo cancel feeOn-time70%

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