London to Lisbon flights

When fares to Lisbon are lowest

Fares to Lisbon are usually lowest outside Easter, the UK school summer holidays in July and August, October half term and the Christmas and New Year period. The live fare calendar on this page shows this month's lowest fares, and the Slashtel Fare Index tells you whether now is a good time to book.

The Fare Index compares the lowest fare in the next three months with the route's usual monthly fare. A reading of 100 means the fare is at its usual level. A reading of 85 or under means it is a good time to book. A twelve month fare calendar on this page covers every month of the year, so you can see how your travel dates compare with quieter periods.

To use the page:

1. Check the live fare calendar for the month you want to fly.
2. Look at the Slashtel Fare Index for the route. If it reads 85 or under, book.
3. If the index is above that, set a price alert for your dates and wait.
4. Compare your dates with the busy weeks listed below before you commit.

Direct flights and airlines on the route

Ryanair and easyJet fly nonstop from London to Lisbon Humberto Delgado Airport (LIS). Nonstop is the quickest and simplest way to make the journey, with no change of plane and no connection to manage.

Both airlines are well known to UK travellers and both serve the route without a stop. You can compare their fares for your dates on the fare calendar on this page, which shows this month's lowest fares.

Portugal is on the same time as the UK all year, so you will not lose or gain an hour when you land. That makes the route easy to plan for a short city break, and it means arrival times on your booking match the clock in London.

Busy weeks on the London to Lisbon route

The busiest weeks on the London to Lisbon route are Easter, the UK school summer holidays in July and August, October half term, and Christmas and New Year. Fares and demand rise in these periods, so book early or travel outside them if your dates are flexible.

Lisbon is a popular city break destination and the school holidays push up demand on both airlines. If you must travel in these weeks, set an alert early and watch the fare index closely.

Travelling in the quieter weeks between these periods usually gives you more choice of dates and a calmer airport experience at both ends.

Arriving in Lisbon: phone, data and entry

Portugal's mobile networks are MEO, NOS and Vodafone, with coverage up to 5G. A travel eSIM or mobile top up means you have data on landing at Lisbon Humberto Delgado Airport, and you should check the official entry rules for your passport before you fly.

If you want to be online as soon as you land, sort your data before you travel. An eSIM installs on your phone before departure and connects to MEO, NOS or Vodafone networks when you arrive. If you prefer to keep your usual number, a mobile top up is the other option.

For entry, always check the official rules for your passport well before your flight date. Requirements can change, and it is your responsibility to confirm what applies to you.

How to get a price alert for your dates

We check fares every day and email you when they fall well under the usual price for your dates, or under your own target. Set an alert once you know your dates and let the checking happen in the background.

Start with the fare calendar on this page to see this month's lowest fares and the Slashtel Fare Index. If the index is not yet at 85 or under, an alert is the practical way to wait for a better fare without checking the site every day.

You can set your own target fare as well as relying on the usual price for your dates. Either way, you get an email when there is something worth acting on, and you can book when the fare suits you.