Cheap flights from London to Porto from £45

The month of January is, on average, the cheapest month to fly to Porto from London, with most prices found around £128. If you are unable to visit Porto during the month of January, then departing from London during the month October is also very affordable. Most momondo users find prices during this month for around £131.

According to our data, Tuesday is the cheapest day to fly to Porto from London. The lowest ticket price found for a Tuesday departure recently was £165. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £196. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

Our data shows that the cheapest London to Porto flights are usually those with departure times at midday. Our users have found flights to Porto at midday for as low as £152. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £199 on average. Flights to Porto from London in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Porto from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around £215 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from London for as low as £154 on momondo.

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

As of May 2026, prices for London to Porto flights are approximately 9% cheaper when compared to flights at the same time last year.

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

Ryanair, TAP AIR PORTUGAL and easyJet are the top three most popular airlines that fly to Porto from London according to our data. Ryanair is the first choice among our users, with 32% of people opting to fly with this airline when travelling to Porto. Keep in mind that there are 9 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

Historically, on average around 22% of flights between London and Porto have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

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

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

According to our data, TAP AIR PORTUGAL have had the fewest delays on this route over the last 12 months, with about 21% of their flights experiencing any sort of delay.

Lisbon (LIS) was the most common stop: 66% of momondo users choosing one-stop flights on this route connected there.

Flights via Barcelona (BCN) offer the lowest average return price of £151.

Flights connecting via Brussels (BRU) have the shortest average one-way travel time: 4h 20m.

Amsterdam (AMS) has the shortest average stopover time for this route: 1h 15m.

The number of flights available between London and Porto is 6 per day as of May 2026. The most frequent departure time is 12:00, with 43% of daily flights leaving in the afternoon.

The number of flights available between London and Porto is 47 per week as of May 2026. The most frequent departure day is Fri, with 34% of weekly flights leaving on this day.