Cheap flights from London to San José from C$ 824

In general, May is the cheapest month to fly from London to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 1,226. If you aren’t able to travel during the month of May, then book flights to San José from London during September instead. Flights to San José in September, while not as cheap as those in May, still average around C$ 1,264.

Fly from London Heathrow to San José Juan Santamaria Intl for the best London - San José Juan Santamaria Intl flight prices

You are more likely to see cheaper flights to San José from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around C$ 1,351 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from London for as low as C$ 1,183 on momondo.

There is only 1 cabin class available to choose from on London to San José 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 32% on your flight if you consider stops on a London to San José flight.

As of October 2026, prices for London to San José flights are approximately 5% cheaper when compared to flights at the same time last year.

Historically, on average around 22% of flights between London and San José have experienced a delay on any given week. The average delay length over the past 12 months has been 146 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning 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. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways has had the least delays on this route over the last 12 months, with about 22% of their flights experiencing any sort of delay.