Cheap flights from London to Portugal from £20

When flying to Portugal from London, you will have various airports to choose from. For the most part, London Stansted and Heathrow are the most common airports for departures, although occasionally Gatwick is used for return flights. London Stansted Airport (STN) is an international airport based in Essex that services the London area, while Heathrow (LHR) is the biggest international airport in the UK. Both are very accessible by public transport. When you arrive in Portugal, you will most often land at Lisbon Portela Airport (LIS), approximately four miles from central Lisbon. It is Portugal's major international airport and serves as the hub for the Portuguese airline, TAP Air Portugal. The airport has a subway that can take you directly tino the city. Your return flight may not arrive at the same airport you departed from, with Heathrow, Stansted and Gatwick all servicing flights home from Portugal. If your return airport is important, be sure to check before booking. Occasionally, you can find a direct flight from Stansted Airport to Porto Airport (OPO), based roughly 5 miles from the centre of Porto. These flights are operated by Ryanair and take approximately 2h 20min to reach their destination.

If you are taking a trip from London to Portugal, you can find several direct flights operated by airlines such as Ryanair, Wizz Air, Tap Air Portugal and easyJet, all leaving from Stansted Airport. Sometimes, these airlines partner up for combination flights with a different carrier for your return flight. However, most direct flights will see you reach Portugal in roughly 2h 45min. TAP Air Portugal leaves from Heathrow for a direct flight of about 2h 40min.

The London to Portugal flight route is well serviced by direct flights, with many airlines catering for the route even at short notice. Despite the proximity of the cities, the layover times can be quite long; you may find yourself in a European city for several hours, giving you the opportunity to explore a bit, should you wish. Irish airline  Ryanair favours Dublin as a layover option, with many flights involving a connecting time of about 7h. Air Europa often stops over in Madrid, with wait times averaging around 10h, and TAP Air Portugal offer connections in Porto with an average transfer time of 1h.

If you hold a valid British passport, you can fly from London to Portugal without applying for a visa. However, you will need to present your passport to enter the country. If you plan to stay for longer than 90 days, you will need to apply for a Schengen visa.

£20 is the cheapest one-way deal found within the past few days, from Ryanair. You may also be able to find cheap deals on easyJet and Wizz Air, with prices starting from £21 and £21, respectively.

While some choose either London Heathrow - Lisbon Humberto Delgado or London Heathrow - Faro, London Gatwick - Lisbon Humberto Delgado is the most popular route from London to Portugal.

Consider Cathay Pacific (74%), British Airways (73%) or Qatar Airways (71%) when booking your flight. These represent the most reliable airlines when flying from London to Portugal.

On average you can expect to pay £1,036 for a flight from London to Portugal. The cheapest flight overall is £76 while the most popular route, (London Gatwick - Lisbon Humberto Delgado) is currently priced at £53.

Yes. In addition to deals on London to Portugal flights, Cheapflights offers holiday packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portugal.

Yes. Cheapflights offers flight deals from London to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Currently, January is the cheapest month in which you can book a flight from London to Portugal (average of £101). Flying from London to Portugal in August is currently the most expensive (average of £274). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.