Cheap flights from London Heathrow Airport to Lisbon from $128

The month of February is, on average, the cheapest month to fly to Lisbon from London Heathrow Airport, with most prices found around $275. The month of January is another great option to travel to Lisbon, with average flight prices from London Heathrow Airport averaging around $279.

According to our data, Tuesday is the cheapest day to fly to Lisbon from London Heathrow Airport. The lowest ticket price found for a Tuesday departure recently was $292. 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 Friday because tickets tend to average around $496. These prices are subject to change though, so be sure to set up a Price Alert for flights to Lisbon.

Our most recent data shows that the best time of day to fly to Lisbon is in the afternoon. Flights from London Heathrow Airport to Lisbon during this time can be as low as $383. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $426 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 travellers’ 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 $391 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 $340 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.

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 22% of their flights experiencing any sort of delay.

As of March 2026, there are 51 flights per day flying from London Heathrow Airport to Lisbon. The most common time of day flights depart is 18:00, with 37% of flights taking off at midday.

The number of flights available between London Heathrow Airport and Lisbon is 359 per week as of March 2026. The most frequent departure day is Sun, with 22% of weekly flights leaving on this day.