Cheap flights from Glasgow to London Heathrow Airport
GLA — LHR
7 Nov — 14 Nov1
Cheapflights Tip: The best prices from Glasgow to London Heathrow are usually found in February or March, booked 41 days in advance, depart on a Friday or Saturday and return on a Saturday
Find 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 8 October 2026.
Popular in | June |
|---|---|
Cheapest in | February |
Average price | £138 |
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.
GG1-LHR
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
Prices
Delays
How far ahead should I book a flight from Glasgow to London Heathrow Airport?
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 40 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, February is the cheapest month in which you can book a flight from Glasgow to London Heathrow Airport (average of £113). Flying from Glasgow to London Heathrow Airport in June is currently the most expensive (average of £173). 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 8 October 2026.
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 18% on your trip compared to booking a flight at midday.
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 3 October 2026.
Travellers seeking maximum savings on their Glasgow to London Heathrow Airport flight should consider departing on Sunday mornings 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.
How often are flights from Glasgow to London delayed?
About 9% of weekly flights between Glasgow and London have experienced delays in the past year, with the average delay time being 98 minutes.
What is the most punctual flight time for Glasgow to London flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Glasgow to London flights?
Over the past year, British Airways have had the lowest number of delays on this route, with just 9% of flights being delayed.
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 8 October 2026.
Read reviews from past customers who have flown with easyJet 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.
Comfort
6.8
Food
5.9
Boarding
6.7
Overall
6.9
Crew
7.7
Entertainment
5.5
Reviews
1 / 20
6.0
GoodAleksandra,Sept 2026
RMU - LGW
Comfort
6.8
Food
5.9
Boarding
6.7
Overall
6.9
Crew
7.7
Entertainment
5.5
Reviews
1 / 20
6.0
GoodAleksandra,Sept 2026
RMU - LGW
Comfort
6.8
Food
5.9
Boarding
6.7
Overall
6.9
Crew
7.7
Entertainment
5.5
Reviews
1 / 20
6.0
GoodAleksandra,Sept 2026
RMU - LGW
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.
Travelling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsHounslow
Milton Keynes
Luton
Slough
Wembley
Gatwick
Ilford
Hayes
Croydon
Colchester
Northampton
Eastbourne
Enfield
Brentford
Southend-on-Sea
Barnet
Southall
Watford
Stratford-upon-Avon
Kingston upon Thames
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Alternative routes for Glasgow to Heathrow
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Complete your trip
Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.
Direct flights to England
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Search flights from Glasgow to Heathrow by cabin class
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Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.
Glasgow and Heathrow flights
Browse other Glasgow and Heathrow flight options. Last updated on 8 October 2026.
Popular flight searches
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Top 3 airlines flying from Glasgow to Heathrow
Discover the top 3 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 7,457,451 searches. Data last updated 8 October 2026.
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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?
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