Cheap flights from Islamabad to London from £275

The cheapest month to fly to London from Islamabad is in March. Flight prices, which tend to average around £633, are often lower during this time because this is during the off-season. The month of May is another great option to travel to London, with average flight prices from Islamabad averaging around £640.

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 £689. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Islamabad to London for around £815.

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £590. Flights in the morning are often more expensive, with an average ticket price of £741.

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 £704 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 £530 on momondo.

There are 3 cabin classes available to choose from on Islamabad 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 16% on your flight if you consider stops on a Islamabad to London flight.

As of October 2026, prices for Islamabad to London flights are approximately 20% cheaper when compared to flights at the same time last year.

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

Pakistan International Airlines, Etihad Airways and Qatar Airways are the top three most popular airlines that fly to London from Islamabad according to our data. Pakistan International Airlines is the first choice among our users, with 32% of people opting to fly with this airline when travelling to London. Keep in mind that there are 10 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% 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 152 minutes.

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

Wednesday 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, Pakistan International Airlines have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

Istanbul (IST) was the most common stop: 41% of momondo users choosing one-stop flights on this route connected there.

Flights via Baku (GYD) offer the lowest average return price of £485.

Flights connecting via Istanbul (IST) have the shortest average one-way travel time: 11h 14m.

Doha (DOH) has the shortest average stopover time for this route: 1h 34m.