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Cheap flights from Glasgow Intl Airport to London Heathrow Airport from £33

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 27/2. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
23 Feb — 2 Mar1
1 adult

The best prices from Glasgow Intl to London Heathrow are usually found in January or March, booked 85 days in advance, depart on a Wednesday or Friday and return on a Tuesday

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 18 February 2025.

Round-trip from

£71

One-way from

£33

Popular in

May

Cheapest in

January

Average price

£114

Good round-trip deal

£433 or less

Good one-way deal

£76 or less
British Airways
  • British Airways
  • 15/7-23/7
  • Nonstop
  • 2h 45m total
  • Glasgow to London
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British Airways
  • British Airways
  • 27/2
  • Nonstop
  • 1h 35m total
  • Glasgow to London
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Highest demand for flights based on searches. 9% potential increase in price (£9 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in February 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 18 February 2025.

Wed 5/1117:50GLA - LHR
Nonstop1h 25mBritish Airways
Thu 13/1106:05LHR - GLA
Nonstop1h 25mBritish Airways
Deal found 17/2£66
Sat 1/316:10GLA - LHR
1 stop5h 45mMultiple Airlines
Sun 2/306:55LHR - GLA
Nonstop1h 25mMultiple Airlines
Deal found 17/2£118
Tue 18/309:05GLA - LHR
1 stop7h 00mKLM
Tue 25/317:50LHR - GLA
1 stop4h 15mKLM
Deal found 18/2£202
Mon 3/316:45GLA - LHR
1 stop4h 15mAer Lingus
Wed 5/308:50LHR - GLA
1 stop7h 25mAer Lingus
Deal found 17/2£216

Find flights from Glasgow Intl to Heathrow within your budget

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 18 February 2025.

Fly from

Glasgow Intl

Fly to

Heathrow

Route

Depart

Return

Price

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 15/7

20:25-21:45

Nonstop1h 20m

London Heathrow

Wed 23/7

07:10-08:35

Nonstop1h 25m

£71

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 1/3

16:10-21:55

1 stop5h 45m

London Heathrow

Sun 2/3

06:55-08:20

Nonstop1h 25m

£118

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 8/3

06:05-14:25

1 stop8h 20m

London Heathrow

Sat 8/3

17:50-22:05

1 stop4h 15m

£201

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 3/3

16:45-21:00

1 stop4h 15m

London Heathrow

Wed 5/3

08:50-16:15

1 stop7h 25m

£216

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 27/2

06:35-08:10

Nonstop1h 35m

£33

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 28/2

22:05-21:55

1 stop23h 50m

£70

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 1/3

16:45-21:05

1 stop4h 20m

£88

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 15/8

12:05-19:35

1 stop7h 30m

£138

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 26/2

05:55-07:30

Nonstop1h 35m

£139

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 8/3

06:00-17:20

2 stops35h 20m

£186

Flights are sorted by cheapest return flights first.

Deals found on 17/2

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.

Travel insights for flights from Glasgow Intl to Heathrow

Get recent, data-driven insights about flights from Glasgow Intl to Heathrow including ideal travel times, pricing trends, and more.

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 14 February 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, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £112). Flying from Glasgow Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £163). 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 18 February 2025.

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 31% 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 16 February 2025.

Travellers seeking maximum savings on their Glasgow Intl Airport to London Heathrow Airport flight should consider departing on Thursday 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.

Weekly flight availability from Glasgow Intl Airport to London Heathrow Airport

Explore weekly flight availability from Glasgow Intl to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 February 2025.

The most flights from GLA to LHR are scheduled on a Monday (60 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

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 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 18 February 2025.
Read reviews from past customers who have flown KLM, LOT and Aer Lingus from Glasgow to London. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

LOT
7.6
Good
1,081 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Aer Lingus
7.1
Good
1,071 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Iberia
7.0
Good
2,635 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

British Airways
6.6
Okay
6,765 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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?

    Our cheapest airline available from Glasgow Intl Airport to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as £71 on this airline. Additional options worth looking into are KLM and Aer Lingus, starting at £198 and £203 round-trip. Users have found that British Airways is 38% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £33. However, be on the lookout for offers from Aer Lingus and Loganair, as they are both options that can get you from Glasgow Intl Airport to London Heathrow Airport for a low price.

  • 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 (92%), Malaysia Airlines (87%) and Kenya Airways (87%).

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

    On average you can expect to pay £1,382 for a flight from Glasgow Intl Airport to London Heathrow Airport. The cheapest flight overall is £42 while the most popular route, (Glasgow Intl - London Heathrow) is currently priced at £69.

  • 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, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to London Heathrow Airport (average of £112). Flying from Glasgow Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £163). 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 Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Croydon
Gatwick
Slough
Luton
Ilford
Hayes
Eastbourne
Swindon
Northampton
Wembley
Southend-on-Sea
Ipswich
Winchester
Maidstone
Crawley
Southall
Watford

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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 18 February 2025.
British Airways flights from Glasgow Intl to London Heathrow
easyJet flights from Glasgow Intl to London Heathrow

Top 2 airlines flying from Glasgow Intl to Heathrow

Discover the top 2 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 18 February 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£54Average£89FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£71Average£119FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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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