Cheap flights from London to Portugal from €35

The month of January is, on average, the cheapest month to fly to Portugal from London, with most prices found around €101. If you’re not able to fly to Portugal in January, then November is your next best option. Flight prices from London to Portugal during November average around €117.

The cheapest day to depart from London to Portugal is on a Sunday when prices can be found for as low as €219. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €927. These prices are subject to change though, so be sure to set up a Price Alert for flights to Portugal.

Fly from London Luton to Lisbon Humberto Delgado for the best London - Portugal flight prices

You are more likely to see cheaper flights to Portugal from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around €226 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from London for as low as €194 on momondo.

There are 2 cabin classes available to choose from on London to Portugal 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 London to Portugal.

Historically, on average around 24% of flights between London and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 112 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. Saturday has historically seen more delays on average compared to the rest of the week.

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

As of February 2026, there are 53 flights per day flying from London to Portugal. The most common time of day flights depart is 18:00, with 44% of flights taking off at midday.

As of February 2026, 372 flights take off from London and land in Portugal each week. The most common flight departure day for this route is Fri, with 23% of weekly flights taking off on this day.