Cheap flights from Porto to London from $51

The cheapest month to fly to London from Porto is in January. Flight prices, which tend to average around $119, 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 Porto averaging around $124.

The cheapest day to depart from Porto to London is on a Sunday. Travelers who choose to depart for London on a Sunday will often find tickets for as low as $140. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $226. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Porto at noon is the least expensive time of day to depart. momondo users have found prices as low as $113 when looking at flights departing at noon. Flights to London are more costly in the afternoon, with an average ticket price of $215. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Porto to London Luton for the best Porto - London flight prices

There are 3 cabin classes available to choose from on Porto to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Porto to London.

Historically, on average around 21% of flights between Porto and London have experienced a delay on any given week. The average delay length over the past 12 months has been 123 minutes.

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

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

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 18% of their flights experiencing any sort of delay.

As of August 2026, 3 flights take off from Porto and land in London each day. The most common flight departure time for this route is 9:00AM, with 49% of daily flights taking off at noon.

As of August 2026, there are 25 flights per week flying from Porto to London. The most common day of the week flights depart is Sat, with 48% of flights taking off on this day.