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Cheap flights from Glasgow to London Heathrow Airport from £54

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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
23 Jul — 30 Jul1
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 18 July 2025.

Round-trip from

£86

One-way from

£54

Popular in

May

Cheapest in

January

Average price

£136
British Airways
  • British Airways
  • 19/8-27/8
  • Nonstop
  • 2h 45m total
  • Glasgow to London
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British Airways
  • British Airways
  • 6/8
  • 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 (£3 potential savings vs. average return price).
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Average for round-trip flights in July 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 18 July 2025.

Sun 24/805:55GLA - LHR
Nonstop1h 35mBritish Airways
Sun 24/821:55LHR - GLA
Nonstop1h 25mBritish Airways
Deal found 18/7£86

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 18 July 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

Sun 24/8

05:55-07:30

Nonstop1h 35m

London Heathrow

Sun 24/8

21:55-23:20

Nonstop1h 25m

£86

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Wed 6/8

19:35-20:55

Nonstop1h 20m

£54

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Sat 15/11

07:20-18:05

1 stop10h 45m

£72

GlasgowLondon

GLA - LHR

GLALHR

Glasgow Intl

Thu 7/8

13:55-18:55

1 stop5h 00m

£93

Flights are sorted by cheapest return flights first.

Deals found on 16/7

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 11 July 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 18 July 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 34% 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 13 July 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.

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 July 2025.
Read reviews from past customers who have flown with Aer Lingus and British Airways from Glasgow to London Heathrow Airport. 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.
Aer Lingus
7.1
Good
1,170 reviews
Check prices

Comfort

7.0

Crew

8.0

Entertainment

6.8

Food

6.4

Overall

7.1

Boarding

7.3

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
1,170 reviews
Aer Lingus
7.1
Good
1,170 reviews
Check prices

Comfort

7.0

Crew

8.0

Entertainment

6.8

Food

6.4

Overall

7.1

Boarding

7.3

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
7,151 reviews
Aer Lingus
7.1
Good
1,170 reviews
Check prices

Comfort

7.0

Crew

8.0

Entertainment

6.8

Food

6.4

Overall

7.1

Boarding

7.3

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 £86, 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 23% lower than the current average price of a flight leaving 3 months from now.

  • 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: Iberia (88%), Finnair (86%), Japan Airlines( 85%).

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

    Looking at all options, your cheapest flight can be booked for £47. While the most popular route (Glasgow Intl - London Heathrow) can be booked for £87 on average our data indicates £1,510 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 London Heathrow Airport?

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

Browse thousands of different options on Cheapflights for your next trip

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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 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£72FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£69Average£122FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£147Average£171FlexibilityNo cancel feeOn-time79%
Search Loganair flights
KLMCheapest£161Average£248FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Glasgow to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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.

Can Cheapflights notify me if prices for flights from Glasgow 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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