Cheap flights from Portugal to London from £25

The cheapest month to fly to London from Portugal is in January. Flight prices, which tend to average around £91, 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 Portugal averaging around £108.

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £164. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portugal to London for around £216.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £147. Flights in the afternoon are often more expensive, with an average ticket price of £201.

Fly from Faro to London Luton for the best Portugal - London flight prices

You are more likely to see cheaper flights to London from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £187 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Portugal for as low as £146 on momondo.

There are 4 cabin classes available to choose from on Portugal to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

easyJet, Ryanair, and Vueling are the most popular carriers operating from Portugal to London

TAP AIR PORTUGAL, easyJet and British Airways are the top three most popular airlines that fly to London from Portugal according to our data. TAP AIR PORTUGAL is the first choice among our users, with 35% of people opting to fly with this airline when travelling to London. Keep in mind that there are 6 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 22% of flights between Portugal and London have experienced a delay on any given week. The average delay length over the past 12 months has been 119 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night 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. Saturday 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 18% of their flights experiencing any sort of delay.

66 flights are operational daily from Portugal to London as of November 2026. The most popular departure time for this route is 14:00, with 46% of flights per day taking off in the afternoon.

468 flights are operational weekly from Portugal to London as of November 2026. The most popular departure day for this route is Sun, with 24% of flights per week taking off on this day.