Cheap Flights from St Louis to Lisbon

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Compare St Louis to Lisbon flight deals

Find the cheapest month or even day of the year to fly to Lisbon

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Flight deals from St Louis to Lisbon

Looking for a cheap last-minute deal or the best return flight from St Louis to Lisbon? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Lisbon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Lisbon flights are currently cheapest in November.

St Louis to Lisbon: Alternative routes

Compare routes from St Louis to Lisbon below. You may find an airport to fly into that's cheaper, faster, or easier than Lisbon.

St Louis to Lisbon: Flight information

The things to know before you go.
Cheapest flight found468 €
Cheapest month to flyNovember

Finding cheap flights from St Louis to Lisbon: Frequently asked questions

The best price we found for a return flight from St Louis to Lisbon is 468 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Lisbon. But we found flights with one or more stops from 468 €.
As of May 2025, there are no flights flying from St Louis to Lisbon.
The cheapest month to fly from St Louis to Lisbon is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Lisbon Airport on Tuesday, 4 November 2025.
No airlines currently offer direct flights between St Louis Airport and Lisbon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Lisbon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Lisbon is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Lisbon.

Travelling from Lambert-St. Louis International Airport (STL) to Lisbon Portela Airport (LIS): what you need to know

  • Lisbon's timezone is UTC+0, making Lisbon five hours ahead of St Louis.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Get to the airport on time to catch your STL to LIS flight.

  • During popular months like July, you'll want to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of international flights when you fly during peak periods in general.

  • If you want to break up your flight, just deselect 'Direct flights only' when searching for your ticket from Lambert-St. Louis International Airport to Lisbon Portela Airport. These are the most popular stopovers between STL and LIS:

    • Philadelphia International Airport

    • Newark Liberty International Airport

    • Pearson International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Lisbon Portela Airport (LIS)

  • 315 € is currently the lowest price for a one-way Lambert-St. Louis International Airport to Lisbon Portela Airport flight. A return flight starts at 468 €. These fares can change based on demand.

  • To pick up cheap tickets from STL to LIS, book ahead. Airlines tend to offer the most competitive fares when flights are first made available.

  • If you can be flexible with your travel plans, try using the 'Whole month' tool. It'll show you the cheapest price across the month when looking for a flight from Lambert-St. Louis International Airport to Lisbon Portela Airport.

  • Landing cheap flights from STL to LIS is easy with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when a new discounted fare appears.

  • Secure the ideal flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Lambert-St. Louis International Airport to Lisbon Portela Airport, use the 'Sort by' tool. You can also filter by departure and arrival times, airline, and number of stops.

Handy information about Lambert-St. Louis International Airport (STL)

  • You'll find STL at 10701 Lambert International Blvd..

  • When it comes to the on-time performance of Lambert-St. Louis International Airport, 78.04% of flights arrive within the scheduled timeframe.

  • To get to Lambert-St. Louis International Airport from central St Louis, it'll take about 20 minutes if you're going by car. This depends on traffic though. It's approximately 26 kilometres from the airport to the city centre.

  • Expect a journey time of roughly 35 minutes on public transport.

  • Get your travels off to a stress-free start by staying near STL. Whether you've booked an early flight from Lambert-St. Louis International Airport to Lisbon Portela Airport or want to avoid feeling rushed, these stays are perfect:

Arriving at Lisbon Portela Airport (LIS)

  • If you're arriving on a late Lambert-St. Louis International Airport to Lisbon Portela Airport flight, few things beat the convenience of being near the terminal. Pick up your bags from the carousel and then be tucked up in bed shortly after at one of these options near LIS:

  • Follow your own route with a Lisbon Portela Airport rental car. Pick up a set of wheels from Klass Wagen, Goldcar or OK Mobility and experience more of Lisbon and beyond.

  • To get the best deal, reserve your ride from Lisbon Portela Airport around two weeks before you travel.

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • Lisbon Portela Airport to the centre of Lisbon has a drive time of about 20 minutes. It's approximately 10 kilometres away.

  • It takes around 1 hour if you're using public transport.

When to fly to Lisbon Portela Airport (LIS)

  • June is the busiest month for flights from Lambert-St. Louis International Airport to Lisbon Portela Airport. For a quieter experience, visit Lisbon in January.

  • Book your flight from Lambert-St. Louis International Airport to Lisbon Portela Airport for August if you want to go to Lisbon during its warmest month. Expect temperatures of between 16ºC (61ºF) and 29ºC (84ºF).

  • If you like cooler conditions, look for a cheap ticket from STL to LIS in January. Temperatures average between 8ºC (46ºF) and 16ºC (61ºF) then.

Explore more of Portugal

  • You've done Lisbon, now it's time to discover other corners of Portugal. Journey around 274 kilometres north to Porto to check off its leading sights. From Livraria Lello to Ribeira District and The Douro River, your itinerary will be busy.

  • Amadora is another must-experience destination in Portugal and is around 8 kilometres north-west of Lisbon. No trip is complete without a visit to Jardim Porta do Viveiro Alfragide, Jardim Caracol do Victor Alfragide and Jardim e estatua Eduardo Jorge.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.