Cheap flights from London Heathrow Airport to Santiago from £480

In general, September is the cheapest month to fly from London Heathrow Airport to Santiago. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £895. If you aren’t able to travel to Santiago during the month of September, then flying in June is also cheap. Prices for this month can be found on momondo for an average of £922.

The cheapest day to depart from London Heathrow Airport to Santiago is on a Friday when prices can be found for as low as £959. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Santiago on Saturday is £1,170.

Fly from London Heathrow to Santiago Arturo Merino Benitez for the best London Heathrow - Santiago Arturo Merino Benitez flight prices

You are more likely to see cheaper flights to Santiago from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Santiago for around £1,025 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Santiago from London Heathrow Airport for as low as £962 on momondo.

There are 4 cabin classes available to choose from on London Heathrow Airport to Santiago 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 35% on your flight if you consider stops on a London Heathrow Airport to Santiago flight.

Avianca and United Airlines are the most popular carriers operating from London Heathrow to Santiago Arturo Merino Benitez

British Airways, Iberia and LATAM Airlines are the top three most popular airlines that fly to Santiago from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Santiago. Keep in mind that there are 6 different airlines that fly to Santiago on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between London and Santiago have experienced a delay on any given week. The average delay length over the past 12 months has been 79 minutes.

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

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday 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 12% of their flights experiencing any sort of delay.

Madrid (MAD) was the most common stop: 62% of momondo users choosing one-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average return price of £803.

Flights connecting via Paris (CDG) have the shortest average one-way travel time: 16h 55m.

Madrid (MAD) has the shortest average stopover time for this route: 1h 51m.

As of October 2026, 1 flights take off from London Heathrow Airport and land in Santiago each day. The most common flight departure time for this route is 22:00, with 100% of daily flights taking off in the evening.

10 flights are operational weekly from London Heathrow Airport to Santiago as of October 2026. The most popular departure day for this route is Mon, with 30% of flights per week taking off on this day.