Cheap flights from Islamabad to London from £284

In general, March is the cheapest month to fly from Islamabad to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £602. The month of May is another great option to travel to London Heathrow Airport, with average flight prices from Islamabad averaging around £630.

On average, the least expensive day to fly to London Heathrow Airport from Islamabad is on a Sunday. momondo users have found tickets for Sunday departures for as low as £698. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £817.

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Islamabad to London Heathrow Airport at midday for as low as £697. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £736 on average. Flights to London Heathrow Airport from Islamabad in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Islamabad when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £705 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Islamabad for as low as £529 on momondo.

There are 2 cabin classes available to choose from on Islamabad to London Heathrow Airport 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 12% on your flight if you consider stops on a Islamabad to London Heathrow Airport flight.

As of November 2026, prices for Islamabad to London Heathrow Airport flights are approximately 27% cheaper when compared to flights at the same time last year.

Etihad Airways, Pakistan International Airlines, and Oman Air are the most popular carriers operating from Islamabad Intl to London Heathrow

Pakistan International Airlines, Etihad Airways and Qatar Airways are the top three most popular airlines that fly to London Heathrow Airport from Islamabad according to our data. Pakistan International Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 9 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% 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 112 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.

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 13% of their flights experiencing any sort of delay.

Doha (DOH) was the most common stop: 30% of momondo users choosing one-stop flights on this route connected there.

Flights via Kuwait City (KWI) offer the lowest average return price of £583.

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.