Cheap flights from London Heathrow Airport to Lisbon from $81

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 $193. If you are unable to visit Lisbon during the month of February, then departing from London Heathrow Airport during the month January is also very affordable. Most momondo users find prices during this month for around $196.

Our data shows that Sunday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $280. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Lisbon for around $348.

The cheapest time of day to fly to Lisbon is in the evening when flights can be purchased for as low as $279. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $337 on average. Flights to Lisbon from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $275 when searching weeks out. 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 $238 on momondo.

There are 3 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.

You could potentially save up to 19% on your flight if you consider stops on a London Heathrow Airport to Lisbon flight.

As of April 2026, prices for London Heathrow Airport to Lisbon flights are approximately 56% more expensive when compared to flights at the same time last year.

Historically, on average around 28% 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 107 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. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 21% of their flights experiencing any sort of delay.

As of April 2026, 42 flights take off from London Heathrow Airport and land in Lisbon each day. The most common flight departure time for this route is 1:00PM, with 35% of daily flights taking off in the evening.

As of April 2026, 299 flights take off from London Heathrow Airport and land in Lisbon each week. The most common flight departure day for this route is Thu, with 26% of weekly flights taking off on this day.