Cheap flights from Incheon Intl Airport to London from $226

The cheapest month to fly to London from Incheon Intl Airport is in March. Flight prices, which tend to average around $678, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Incheon Intl Airport averaging around $684.

The cheapest day to depart from Incheon Intl Airport to London is on a Friday. Travelers who choose to depart for London on a Friday will often find tickets for as low as $845. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,295. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

You are more likely to see cheaper flights to London from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $893 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Incheon Intl Airport for as low as $686 on momondo.

There are 3 cabin classes available to choose from on Incheon 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.

You could potentially save up to 5% on your flight if you consider stops on a Incheon Intl Airport to London flight.

Historically, on average around 25% of flights between Incheon and London have experienced a delay on any given week. The average delay length over the past 12 months has been 126 minutes.

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

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

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

Beijing (PEK) was the most common stop: 35% of momondo users choosing 1-stop flights on this route connected there.

Flights via Warsaw (WAW) offer the lowest average round-trip price of $628.

Flights connecting via Beijing (PEK) have the shortest average one-way travel time: 15h 33m.

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 25m.

As of September 2026, 3 flights take off from Incheon Intl Airport and land in London each day. The most common flight departure time for this route is 12:00PM, with 56% of daily flights taking off at noon.

As of September 2026, 26 flights take off from Incheon Intl Airport and land in London each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.