Cheap flights from London to Santiago from £297

In general, June is the cheapest month to fly from London to Santiago. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £850. If you aren’t able to travel to Santiago during the month of June, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £855.

The cheapest day to depart from London to Santiago is on a Wednesday when prices can be found for as low as £948. 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 £1,088.

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

You are more likely to see cheaper flights to Santiago from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Santiago for around £985 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 for as low as £878 on momondo.

There are 3 cabin classes available to choose from on London to Santiago Arturo Merino Benitez 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 London to Santiago flight.

Avianca, LEVEL, and British Airways are the most popular carriers operating from London to Santiago Arturo Merino Benitez

British Airways, LATAM Airlines and Air Canada are the top three most popular airlines that fly to Santiago from London according to our data. British Airways is the first choice among our users, with 39% of people opting to fly with this airline when travelling to Santiago. Keep in mind that there are 7 different airlines that fly to Santiago on a routine basis, so you have a few additional options to choose from.

Historically, on average around 6% 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 94 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. Monday 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 6% of their flights experiencing any sort of delay.

Madrid (MAD) was the most common stop: 51% of momondo users choosing one-stop flights on this route connected there.

Flights via Montreal (YUL) offer the lowest average return price of £724.

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 17h 10m.

Montreal (YUL) has the shortest average stopover time for this route: 1h 25m.

The number of flights available between London and Santiago is 1 per day as of March 2026. The most frequent departure time is 22:00, with 100% of daily flights leaving in the evening.

The number of flights available between London and Santiago is 12 per week as of March 2026. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.