How far ahead should I book a flight from London Heathrow Airport to Lisbon with British Airways?

Booking with British Airways 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Lisbon with British Airways?

Currently, the most affordable month to book a British Airways flight from London Heathrow Airport to Lisbon in January, with an average price of HK$1,537. Conversely, traveling with British Airways from London Heathrow Airport to Lisbon in June will be the most expensive, with an average cost of HK$3,380. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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British Airways flights from Heathrow to Lisbon in 2026

Popular in	August
Cheapest in	February
Average price (all airlines)	HK$2,893

Highest demand for flights from London Heathrow to Lisbon Humberto Delgado; 18% potential price increase.

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Best time to find cheap flights from London Heathrow to Lisbon Humberto Delgado; 3% potential price drop.

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The best time to book a flight to Lisbon with British Airways is 70 days before departure. On average, fares are higher if you book 43 days before departure.

Which month is the cheapest to fly Economy class from London Heathrow Airport to Lisbon?

For Economy class flights, the cheapest month to fly this route is January. The most expensive months are June and August.

Best time to book a flight from Heathrow to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Heathrow with our price prediction graph.

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British Airways flights from Heathrow to Lisbon in 2026

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Average price (all airlines)

When is the best time to book a flight to Lisbon with British Airways?

The best time to book a flight to Lisbon with British Airways is 70 days before departure. On average, fares are higher if you book 43 days before departure.

Which month is the cheapest to fly Economy class from London Heathrow Airport to Lisbon?

For Economy class flights, the cheapest month to fly this route is January. The most expensive months are June and August.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

Temperature in Lisbon by month

Best time to book a flight from Heathrow to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Heathrow with our price prediction graph.

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Fly from Heathrow to Lisbon on another airline

Consider alternative airlines that service the Lisbon area. Flight routes are based on user searches made on Cheapflights and were last updated on 1 August 2026.

Other British Airways flights from Heathrow

Browse through other British Airways flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 1 August 2026.

Complete your trip

Complete your trip to Lisbon by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines serving Heathrow and Lisbon

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Other popular destinations in Europe

If Lisbon is not for you, choose from these other destinations located in Europe. Flight routes are based on user searches made on Cheapflights and were last updated on 1 August 2026.

Popular flights from British Airways

Browse through some of the most popular routes that British Airways offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 1 August 2026.

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British Airways flights from London Heathrow Airport to Lisbon (LHR - LIS)

British Airways flights from Heathrow to Lisbon in 2026

Popular in

Cheapest in

Average price (all airlines)

When is the best time to book a flight to Lisbon with British Airways?

The best time to book a flight to Lisbon with British Airways is 70 days before departure. On average, fares are higher if you book 43 days before departure.

Which month is the cheapest to fly Economy class from London Heathrow Airport to Lisbon?

For Economy class flights, the cheapest month to fly this route is January. The most expensive months are June and August.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

Temperature in Lisbon by month

Best time to book a flight from Heathrow to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Heathrow with our price prediction graph.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Heathrow to Lisbon on another airline

Consider alternative airlines that service the Lisbon area. Flight routes are based on user searches made on Cheapflights and were last updated on 1 August 2026.

Other British Airways flights from Heathrow

Browse through other British Airways flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 1 August 2026.

Complete your trip

Complete your trip to Lisbon by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines serving Heathrow and Lisbon

Choose from other airlines serving Heathrow and Lisbon.

Other popular destinations in Europe

If Lisbon is not for you, choose from these other destinations located in Europe. Flight routes are based on user searches made on Cheapflights and were last updated on 1 August 2026.

Popular flights from British Airways

Browse through some of the most popular routes that British Airways offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 1 August 2026.

See what others are saying about British Airways

Overview

Recent reviews

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