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$58+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
Jun 19 — Jun 261
Thu 6/19
Thu 6/26
1 adult, Economy
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Cheapflights Tip: The best prices from Glasgow Intl to London Heathrow are usually found in January or November, booked 85 days in advance, depart on a Friday or Tuesday and return on a Monday

Cheap 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 June 14, 2025.

Round-trip from

$120
(Booking.com)

One-way from

$58
(Mytrip)

Popular in

May

Cheapest in

January

Average price

$170

Good round-trip deal

$569 or less

Good one-way deal

$141 or less
From Glasgow Intl to London Heathrow
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One-way flight from Glasgow Intl to London Heathrow
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Highest demand for flights based on searches. 10% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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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Find 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 June 14, 2025.

This Booking.com deal was found by Cheapflights users on 6/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/215:50 amGLA - LHR
Nonstop1h 35mBritish Airways
Mon 7/289:50 pmLHR - GLA
Nonstop1h 25mBritish Airways
Deal found 6/14$120
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/215:30 pmGLA - LHR
Nonstop1h 25mMultiple Airlines
Mon 7/286:20 amLHR - GLA
1 stop5h 10mMultiple Airlines
Deal found 6/14$204
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/238:35 amGLA - LHR
1 stop4h 50mAer Lingus
Wed 7/302:20 pmLHR - GLA
1 stop5h 20mAer Lingus
Deal found 6/13$288
This KLM deal was found by Cheapflights users on 6/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:00 amGLA - LHR
1 stop4h 45mKLM
Wed 8/67:15 pmLHR - GLA
1 stop3h 55mKLM
Deal found 6/11$291

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 June 14, 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to London Heathrow Airport that are best for you.

Fly from

Glasgow Intl

Fly to

Heathrow

Route

Depart

Return

Price

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 7/21

5:50 am-7:25 am

Nonstop1h 35m

London Heathrow

Mon 7/28

9:50 pm-11:15 pm

Nonstop1h 25m

$120

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 10/17

5:50 am-7:25 am

Nonstop1h 35m

London Heathrow

Sun 10/19

5:50 pm-7:25 am

1 stop13h 35m

$203

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 7/23

8:35 am-1:25 pm

1 stop4h 50m

London Heathrow

Wed 7/30

2:20 pm-7:40 pm

1 stop5h 20m

$288

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 7/29

6:00 am-10:45 am

1 stop4h 45m

London Heathrow

Wed 8/6

7:15 pm-11:10 pm

1 stop3h 55m

$291

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 7/28

12:05 pm-3:30 pm

1 stop3h 25m

London Heathrow

Mon 8/4

8:45 am-11:35 am

1 stop2h 50m

$613

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 7/29

8:35 am-10:10 am

Nonstop1h 35m

$58

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 8/18

2:20 pm-7:25 pm

1 stop5h 05m

$118

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 8/12

3:55 pm-8:20 pm

1 stop4h 25m

$119

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 9/12

12:05 pm-8:00 am

1 stop19h 55m

$216

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 6/24

9:15 am-10:50 am

Nonstop1h 35m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

Showing 1-10 of 13 results
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 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?

Use this chart to determine the optimal time to book a round-trip flight from Glasgow Intl to Heathrow. Price data was last updated on June 9, 2025.

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 85 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 $661). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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 June 14, 2025.

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 evening could potentially save you up to 10% 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 June 8, 2025.

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

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 June 14, 2025.
Read reviews from past customers who have flown KLM, LOT and Aer Lingus from Glasgow to London. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,360 reviews

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.2

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,360 reviews
KLM
7.8
Good
1,360 reviews

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.2

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
LOT
7.6
Good
1,079 reviews
KLM
7.8
Good
1,360 reviews

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.2

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.1
Good
1,117 reviews
KLM
7.8
Good
1,360 reviews

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.2

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Iberia
7.0
Good
2,778 reviews
KLM
7.8
Good
1,360 reviews

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.2

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Lufthansa
6.8
Okay
7,145 reviews
KLM
7.8
Good
1,360 reviews

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.2

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

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

    British Airways, at $120, was found to be the cheapest airline from Glasgow Intl Airport to London Heathrow Airport.Alternate airlines to your destination round-trip include Aer Lingus and KLM. These flights start at 19% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to London Heathrow Airport one-way?

    The cheapest airlines for a one-way flight from Glasgow Intl Airport to London Heathrow Airport are British Airways ($58), Aer Lingus ($119), and Loganair ($216).

  • 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 Royal Air Maroc (93%), Iberia (90%) and Japan Airlines (90%).

  • 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 $2,255, our data indicates the cheapest price to be $88. 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, November is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of $661). Flying from Glasgow Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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 Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Folkestone
Borehamwood
Broadway
Sutton
Aylesbury
Chelmsford
Brentwood

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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 June 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$98Average$166FlexibilityNo cancel feeOn-time70%

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