Cheap flights from Glasgow Intl Airport to London from £17

The cheapest month to fly to London from Glasgow Intl Airport is in September. Flight prices, which tend to average around £92, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Glasgow Intl Airport averaging around £97.

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £216. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Glasgow Intl Airport to London for around £564.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £127. Flights in the afternoon are often more expensive, with an average ticket price of £561.

Fly from Glasgow Intl to London Stansted for the best Glasgow Intl - London flight prices

You are more likely to see cheaper flights to London from Glasgow Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £134 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Glasgow Intl Airport for as low as £116 on momondo.

There are 3 cabin classes available to choose from on Glasgow Intl Airport to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Ryanair, easyJet, and British Airways are the most popular carriers operating from Glasgow Intl to London

British Airways, easyJet and Ryanair are the top three most popular airlines that fly to London from Glasgow Intl Airport according to our data. British Airways is the first choice among our users, with 56% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between Glasgow and London have experienced a delay on any given week. The average delay length over the past 12 months has been 102 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

The number of flights available between Glasgow Intl Airport and London is 24 per day as of June 2026. The most frequent departure time is 07:00, with 43% of daily flights leaving in the afternoon.

As of June 2026, there are 173 flights per week flying from Glasgow Intl Airport to London. The most common day of the week flights depart is Mon, with 35% of flights taking off on this day.