C$536 Cheap Flights from St Louis (STL) to Lisbon (LIS)

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Flight deals from St Louis Airport to Lisbon Airport

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Lisbon Airport? If you want to travel next month, return fares start from C$993. 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 October.

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 foundC$536
Cheapest month to flyOctober

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 C$917. 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 C$917.
As of March 2026, there are no flights flying from St Louis to Lisbon.
The cheapest month to fly from St Louis to Lisbon is usually December.
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, December 1, 2026.
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, Air France offers the cheapest flight tickets to Lisbon.

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

  • Flying over a peak time such as July? School holidays and other popular periods can mean longer lines at checkpoints. Play it safe and arrive up to four hours before an international flight and two hours before domestic departures.

  • We make it a piece of cake to book a flight with a stopover. To see all the options for flights from Lambert-St. Louis International Airport to Lisbon Portela Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Popular stopovers between STL and LIS include:

    • Newark Liberty International Airport

    • Philadelphia International Airport

    • Pearson International Airport

  • To find out whether you need a visa to enter Portugal, contact your carrier and the local embassy or consulate. They'll provide you with the most up-to-date details, including other travel documents you may need after booking your cheap ticket from STL to LIS.

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

  • The lowest price we've found for a one-way ticket from Lambert-St. Louis International Airport to Lisbon Portela Airport is C$536. For a return flight on this route, the best price is C$917. Depending on the availability when you book, these fares may change.

  • It's usually smart to book in advance if you want to get cheap flight tickets from STL to LIS. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • Getting cheap flight tickets from Lambert-St. Louis International Airport to Lisbon Portela Airport is easier if you're flexible with your dates. Use the 'Whole month' search tool to see the lowest prices across each month and snap up a great deal.

  • Sign into your online account or use the app to set up a Price Alert. You'll get notified right away if there's a better deal on this route. It doesn't take long, and it'll save you time checking for cheap flight tickets from STL to LIS every day.

  • Use filters to tailor your flights from Lambert-St. Louis International Airport to Lisbon Portela Airport. Simply enter your ideal arrival and departure times, airlines and number of stops. Or sort your results by 'Cheapest' to find the best deals.

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

  • Located around 26 kilometres from central St Louis, Lambert-St. Louis International Airport can be reached in approximately 21 minutes by car, depending on traffic. The journey by public transport will take roughly 36 minutes.

  • Want an easy way to start to your travels? Stay near STL. Whether you're catching 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)

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • From Lisbon Portela Airport, Lisbon is approximately 10 kilometres away. It takes around 22 minutes to get to the center driving.

  • If you're using public transport, expect a journey time of about 59 minutes.

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. To avoid the crowds, visit Lisbon in February.

  • Before locking in your flight from Lambert-St. Louis International Airport to Lisbon Portela Airport, consider the kind of weather you enjoy. August is the warmest month in Lisbon, with the temperature ranging from 16ºC to 29ºC.

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

More about Lisbon

Complete your Lisbon trip with hotels and a car rental

  • Comparing flights is not the only thing we're good at. After booking your cheap ticket to Lisbon Portela Airport, check out our car rental offers that'll give you the freedom and flexibility to see the sights at your own pace. Next, have a look at our exclusive rates for hotels to find your ideal Lisbon stay.

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