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Cheap flights from Glasgow to London Heathrow Airport from £34

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 17/10. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
18 Jun — 25 Jun1
1 adult

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

Cheap flight deals from Glasgow to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow (GG1) 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 13 June 2025.

Round-trip from

£67

One-way from

£34

Popular in

May

Cheapest in

January

Average price

£125
British Airways
  • British Airways
  • 4/12-8/12
  • Nonstop
  • 2h 50m total
  • Glasgow to London
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British Airways
  • British Airways
  • 17/10
  • Nonstop
  • 1h 20m total
  • Glasgow to London
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£9 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Glasgow to Heathrow

Cheapest flights from Glasgow to Heathrow
Explore the most affordable flight options available from Glasgow to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Thu 4/1220:15GLA - LHR
Nonstop1h 25mBritish Airways
Mon 8/1207:30LHR - GLA
Nonstop1h 25mBritish Airways
Deal found 11/6£67
Tue 22/720:25GLA - LHR
Nonstop1h 20mMultiple Airlines
Tue 29/708:00LHR - GLA
1 stop3h 25mMultiple Airlines
Deal found 11/6£146

Cheapflights Fare Finder

Customise your flight search to find flights from Glasgow 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 13 June 2025.
Use the filters below to find and compare flights from Glasgow to London Heathrow Airport that are best for you.

Fly from

Glasgow

Fly to

Heathrow

Route

Depart

Return

Price

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 4/12

20:15-21:40

Nonstop1h 25m

London Heathrow

Mon 8/12

07:30-08:55

Nonstop1h 25m

£67

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 22/7

20:25-21:45

Nonstop1h 20m

London Heathrow

Tue 29/7

08:00-11:25

1 stop3h 25m

£146

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Fri 17/10

20:25-21:45

Nonstop1h 20m

£34

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 13/10

21:50-12:00

1 stop14h 10m

£77

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Mon 4/8

08:35-13:25

1 stop4h 50m

£85

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Tue 17/6

09:15-10:50

Nonstop1h 35m

£138

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Best time to book a flight from Glasgow to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Glasgow 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 to London Heathrow Airport

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

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

The price you pay for your flight from Glasgow to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Glasgow to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Glasgow to London Heathrow Airport (average of £112). Flying from Glasgow to London Heathrow Airport in August is currently the most expensive (average of £164). 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 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 13 June 2025.

A simple way to save on the total cost of your ticket is to fly from Glasgow 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 to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from Glasgow to Heathrow. Price data was last updated on 8 June 2025.

Travellers seeking maximum savings on their Glasgow 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 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 13 June 2025.
Aer Lingus
7.1
Good
1,118 reviews
Check prices

Boarding

7.2

Comfort

7.0

Food

6.4

Overall

7.1

Entertainment

6.8

Crew

7.9

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.
Aer Lingus
7.1
Good
1,118 reviews
Aer Lingus
7.1
Good
1,118 reviews
Check prices

Boarding

7.2

Comfort

7.0

Food

6.4

Overall

7.1

Entertainment

6.8

Crew

7.9

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.
Iberia
7.0
Good
2,776 reviews
Aer Lingus
7.1
Good
1,118 reviews
Check prices

Boarding

7.2

Comfort

7.0

Food

6.4

Overall

7.1

Entertainment

6.8

Crew

7.9

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.
British Airways
6.6
Okay
7,011 reviews
Aer Lingus
7.1
Good
1,118 reviews
Check prices

Boarding

7.2

Comfort

7.0

Food

6.4

Overall

7.1

Entertainment

6.8

Crew

7.9

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.

Related info for your journey

Find useful and relevant information for your journey from Glasgow to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Currently priced at £67, British Airways will fly you from Glasgow to London Heathrow Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is priced at 39% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £34. Aer Lingus flights start at £85 while deals on Iberia start at £138 one-way.

  • What are the most reliable airlines from Glasgow to London Heathrow Airport?

    Before booking your flight to London Heathrow Airport from Glasgow, check out the most reliable airlines to get you to your destination on time: Royal Air Maroc (93%), Iberia (90%), Japan Airlines( 90%).

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

    Looking at all options, your cheapest flight can be booked for £58. While the most popular route (Glasgow Intl - London Heathrow) can be booked for £67 on average our data indicates £1,987 when flying from Glasgow to London Heathrow Airport.

  • Can I find deals for flights from Glasgow to Heathrow that include hotel bookings?

    Yes. In addition to deals on Glasgow to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Glasgow to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow to Heathrow.

  • Can I find deals for business class flights from Glasgow to Heathrow?

    Yes. Cheapflights offers flight deals from Glasgow 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 to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Glasgow to London Heathrow Airport (average of £112). Flying from Glasgow to London Heathrow Airport in August is currently the most expensive (average of £164). 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?

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

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Alternative routes for Glasgow to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Glasgow to Heathrow

Discover the top 4 airlines that operate flights from Glasgow 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£31Average£68FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£67Average£120FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£139Average£170FlexibilityNo cancel feeOn-time79%
Search Loganair flights
KLMCheapest£158Average£251FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Glasgow to Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from Glasgow to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Glasgow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Glasgow to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Glasgow to Heathrow with no change fees.

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