Cheap flights from Islamabad to London from £273

The cheapest month to fly to London from Islamabad is in December. Flight prices, which tend to average around £616, are often lower during this time because this is during the off-season. The month of July is another great option to travel to London, with average flight prices from Islamabad averaging around £632.

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £655. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Islamabad to London for around £779.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £485. Flights in the evening are often more expensive, with an average ticket price of £743.

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

You are more likely to see cheaper flights to London from Islamabad when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £685 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 Islamabad for as low as £524 on momondo.

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

You could potentially save up to 6% on your flight if you consider stops on a Islamabad to London flight.

As of March 2026, prices for Islamabad to London flights are approximately 10% cheaper when compared to flights at the same time last year.

Etihad Airways, Gulf Air, and Qatar Airways are the most popular carriers operating from Islamabad Intl to London

British Airways, Etihad Airways and Qatar Airways are the top three most popular airlines that fly to London from Islamabad according to our data. British Airways is the first choice among our users, with 29% of people opting to fly with this airline when travelling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between Islamabad and London have experienced a delay on any given week. The average delay length over the past 12 months has been 153 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Monday 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 20% of their flights experiencing any sort of delay.

Abu Dhabi (AUH) was the most common stop: 29% of momondo users choosing one-stop flights on this route connected there.

Flights via Kuwait City (KWI) offer the lowest average return price of £579.

Flights connecting via Istanbul (IST) have the shortest average one-way travel time: 11h 38m.

Istanbul (IST) has the shortest average stopover time for this route: 1h 57m.