Cheap flights from London Heathrow Airport to Glasgow from $118

In general, February is the cheapest month to fly from London Heathrow Airport to Glasgow Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $221. If you aren’t able to travel to Glasgow Intl Airport during the month of February, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $240.

On average, the least expensive day to fly to Glasgow Intl Airport from London Heathrow Airport is on a Friday. momondo users have found tickets for Friday departures for as low as $134. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Glasgow Intl Airport is Saturday, with ticket prices averaging around $296.

In the morning is the cheapest time of day to fly from London Heathrow Airport to Glasgow Intl Airport when you can find flight prices for as low as $185. Flying to Glasgow Intl Airport in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Glasgow Intl Airport is in the afternoon when prices are around $374.

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

You are more likely to see cheaper flights to Glasgow Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Glasgow Intl Airport for around $264 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Glasgow Intl Airport from London Heathrow Airport for as low as $204 on momondo.

There are 2 cabin classes available to choose from on London Heathrow Airport to Glasgow Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 16% of flights between London and Glasgow 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 early afternoon 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. Friday 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 16% of their flights experiencing any sort of delay.

15 flights are operational daily from London Heathrow Airport to Glasgow Intl Airport as of August 2026. The most popular departure time for this route is 18:00, with 49% of flights per day taking off in the evening.

110 flights are operational weekly from London Heathrow Airport to Glasgow Intl Airport as of August 2026. The most popular departure day for this route is Thu, with 51% of flights per week taking off on this day.