Cheap flights from London Heathrow Airport to Lisbon from €73

In general, February is the cheapest month to fly from London Heathrow Airport to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €166. If you don’t want to visit Lisbon in February, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €169.

The cheapest day to depart from London Heathrow Airport to Lisbon is on a Sunday. Travellers who choose to depart for Lisbon on a Sunday will often find tickets for as low as €194. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Lisbon on Thursday is €1,036.

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

You are more likely to see cheaper flights to Lisbon from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around €230 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from London Heathrow Airport for as low as €202 on momondo.

There are 2 cabin classes available to choose from on London Heathrow to Lisbon Humberto Delgado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of March 2026, prices for London Heathrow Airport to Lisbon flights are approximately 25% more expensive when compared to flights at the same time last year.

Historically, on average around 29% of flights between London and Lisbon have experienced a delay on any given week. The average delay length over the past 12 months has been 108 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.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday 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 21% of their flights experiencing any sort of delay.

33 flights are operational daily from London Heathrow Airport to Lisbon as of March 2026. The most popular departure time for this route is 18:00, with 43% of flights per day taking off at midday.

233 flights are operational weekly from London Heathrow Airport to Lisbon as of March 2026. The most popular departure day for this route is Tue, with 24% of flights per week taking off on this day.