Cheap flights from Santiago to London from $324

The cheapest month to fly to London from Santiago is in March. Flight prices, which tend to average around $943, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Santiago averaging around $952.

The cheapest day to depart from Santiago to London is on a Monday. Travelers who choose to depart for London on a Monday will often find tickets for as low as $1,183. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,505. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Santiago at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,299 when looking at flights departing at noon. Flights to London are more costly in the morning, with an average ticket price of $1,960. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to London from Santiago when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,226 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Santiago for as low as $1,031 on momondo.

There are 3 cabin classes available to choose from on Santiago 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 62% on your flight if you consider stops on a Santiago to London flight.

As of August 2026, prices for Santiago to London flights are approximately 1% more expensive when compared to flights at the same time last year.

United Airlines, LATAM Airlines, and KLM are the most popular carriers operating from Santiago Arturo Merino Benitez to London

Iberia, British Airways and LATAM Airlines are the top three most popular airlines that fly to London from Santiago according to our data. Iberia is the first choice among our users, with 38% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 8% of flights between Santiago and London have experienced a delay on any given week. The average delay length over the past 12 months has been 204 minutes.

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

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

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Madrid (MAD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Bogotá (BOG) offer the lowest average round-trip price of $882.

Flights connecting via Sao Paulo (GRU) have the shortest average one-way travel time: 17h 25m.

Sao Paulo (GRU) has the shortest average layover time for this route: 2h 23m.

As of August 2026, there are 1 flights per day flying from Santiago to London. The most common time of day flights depart is 3:00PM, with 100% of flights taking off in the afternoon.

As of August 2026, there are 9 flights per week flying from Santiago to London. The most common day of the week flights depart is Tue, with 33% of flights taking off on this day.