$42 Cheap Flights from Glasgow (GLA) to London (LHR)

View $42 flight on Thu, Oct 30, 2025Opens in a new window

Popular airlines from Glasgow International Airport (GLA) to Heathrow Airport (LHR)

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Find available prices by choosing your travel dates.

Cheap Flights from Glasgow to London (GLA-LHR)

Prices were available within the past 7 days and start at $42 for one-way flights and $87 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, Nov 26 - Thu, Nov 27
GLA
Glasgow
LHR
London
$87 Roundtrip, found 7 hours ago
$87
Roundtrip
found 7 hours ago
Select British Airways flight, departing Wed, Nov 26 from Glasgow to London, returning Thu, Nov 27, priced at $87 found 7 hours ago
British Airways
Mon, Jan 12 - Wed, Jan 14
GLA
Glasgow
LHR
London
$90 Roundtrip, found 5 days ago
$90
Roundtrip
found 5 days ago
Select British Airways flight, departing Mon, Jan 12 from Glasgow to London, returning Wed, Jan 14, priced at $90 found 5 days ago
British Airways
Wed, Jul 23 - Wed, Aug 6
GLA
Glasgow
LHR
London
$92 Roundtrip, found 2 days ago
$92
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, Jul 23 from Glasgow to London, returning Wed, Aug 6, priced at $92 found 2 days ago
British Airways
Fri, Dec 26 - Mon, Jan 26
GLA
Glasgow
LHR
London
$94 Roundtrip, just found
$94
Roundtrip
just found
Select British Airways flight, departing Fri, Dec 26 from Glasgow to London, returning Mon, Jan 26, priced at $94 just found
British Airways
Wed, Jul 23 - Wed, Aug 6
GLA
Glasgow
LHR
London
$96 Roundtrip, found 2 days ago
$96
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, Jul 23 from Glasgow to London, returning Wed, Aug 6, priced at $96 found 2 days ago
British Airways
Fri, Dec 26 - Mon, Jan 26
GLA
Glasgow
LHR
London
$98 Roundtrip, just found
$98
Roundtrip
just found
Select British Airways flight, departing Fri, Dec 26 from Glasgow to London, returning Mon, Jan 26, priced at $98 just found
British Airways
Mon, Sep 22 - Tue, Sep 23
GLA
Glasgow
LHR
London
$102 Roundtrip, found 3 days ago
$102
Roundtrip
found 3 days ago
Select British Airways flight, departing Mon, Sep 22 from Glasgow to London, returning Tue, Sep 23, priced at $102 found 3 days ago
British Airways
Mon, Sep 22 - Tue, Sep 23
GLA
Glasgow
LHR
London
$106 Roundtrip, found 3 days ago
$106
Roundtrip
found 3 days ago
Select British Airways flight, departing Mon, Sep 22 from Glasgow to London, returning Tue, Sep 23, priced at $106 found 3 days ago
British Airways
Tue, Jun 3 - Tue, Jun 17
GLA
Glasgow
LHR
London
$110 Roundtrip, found 3 days ago
$110
Roundtrip
found 3 days ago
Select British Airways flight, departing Tue, Jun 3 from Glasgow to London, returning Tue, Jun 17, priced at $110 found 3 days ago
British Airways
Wed, May 21 - Tue, May 27
GLA
Glasgow
LHR
London
$112 Roundtrip, found 3 days ago
$112
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, May 21 from Glasgow to London, returning Tue, May 27, priced at $112 found 3 days ago
Flights from Glasgow (GLA) to London (LHR)
Origin airport
Glasgow Intl.
Destination airport
Heathrow
Airlines serving
British Airways
Roundtrip price
$86
Distance
344 mi

Glasgow to London Flights

The cheapest times to fly from Glasgow to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Glasgow to London are during the month of November. You can find some of the cheapest flights from Glasgow to London with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Glasgow to London

Sunday is one of the best days to book for cheap flights from Glasgow to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Glasgow to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Glasgow to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $42 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Glasgow to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Glasgow to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR) cost?
Cheap return fares from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR) start at $108. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a British Airways flight leaving GLA on May 3 2025 and touching down at LHR. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from GLA to LHR?
The cheapest flights from GLA to LHR are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
If you’re departing from Glasgow Intl. Airport (GLA), you can get on a direct flight to Heathrow Airport (LHR) with British Airways.
What is the cheapest airline that flies from GLA to LHR?
With prices starting from $51 for a one-way flight from GLA to LHR, British Airways is currently the cheapest carrier for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from GLA on July 16 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
When flying out of Glasgow Intl. Airport (GLA), you can choose from an average of 11 daily nonstop flights to Heathrow Airport (LHR).
What are the most popular departure times for flights from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
The 12 PM departures from GLA to LHR see the highest demand. Greater demand means you’ll likely pay more for these departures. If you’re looking to save, book during off-peak hours.
What day of the week has the most flights from GLA to LHR?
If you depart on a Wednesday, you’ll get the largest range of options for flights from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR).
What is the earliest flight from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
Glasgow Intl. Airport (GLA)’s earliest flight to Heathrow Airport (LHR) departs at approximately 5:55AM UTC+0. With a total journey time of 1h 35m, you’ll touch down at around 7:30AM UTC+0.
How long does it take to fly from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
It usually takes 1 hour and 30 minutes to travel the 340 mi from GLA to LHR.
What airline has the least delays from GLA to LHR?
With 83% of journeys usually arriving on time, China Southern Airlines has the best on-time performance for nonstop flights from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR). To monitor your flight status and get notifications about any changes, use the Expedia App.
What is the best time to fly from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
To reach Heathrow Airport (LHR) on schedule, pick a flight that leaves Glasgow Intl. Airport (GLA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for London from Glasgow Intl. Airport (GLA)?
Touch down at any of these London airports following your direct flight from Glasgow Intl. Airport (GLA):

  • Heathrow Airport (LHR)
  • Gatwick Airport (LGW)
  • Stansted Airport (STN)
  • London City Airport (LCY)
  • Luton Airport (LTN)

Is it cheaper to buy a plane ticket from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR) last-minute?
Holding off until right before your break to book a flight from GLA to LHR often results in higher prices. While it’s possible to find some last-minute discounts, they aren’t always guaranteed. Allow some flexibility in your schedule for a better chance of getting a bargain.
Is it cheaper to book a GLA to LHR flight and hotel package?
You can save money by securing a GLA to LHR flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one convenient place. After selecting your preferred accommodations and flights, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Glasgow Intl. Airport (GLA) to Heathrow Airport (LHR)?
In most cases, you can reschedule or cancel your GLA to LHR flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline’s fees and policies on flight changes, or if you want further information, visit our Customer Service portal.

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*Available to One Key members.