Cheap Flights from St Louis to Lisbon

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      Travellers and cabin class, 1 Adult, Economy

      Compare St Louis to Lisbon flight deals

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

      Book the best Lisbon fare with no extra fees

      Flight deals from St Louis to Lisbon

      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 ج.م.‏ 50,459. 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 December.

      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 foundج.م.‏ 17,952
      Cheapest month to flyDecember

      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 ج.م.‏ 36,343. 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 ج.م.‏ 36,343.
      As of August 2026, there are no flights flying from St Louis to Lisbon.
      The cheapest month to fly from St Louis to Lisbon is usually October.
      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 Sunday, 18 October 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 Canada offers the cheapest flight tickets to Lisbon.

      Travelling from St Louis Airport (STL) to Lisbon Airport (LIS): what you need to know

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

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are tried-and-true travel tips. Get to the airport on time to board your STL to LIS flight.

      • During popular months such as July, you'll want to get to the airport earlier than usual. Arrive two hours before a domestic departure and four hours ahead for international flights whenever you're flying during a high season in general.

      • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from St Louis Airport to Lisbon Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to tour your chosen city. Stopovers between STL and LIS include:

        • New York Newark Airport

        • Toronto Pearson International Airport

        • Philadelphia International Airport

      How to find the cheapest flights from St Louis Airport (STL) to Lisbon Airport (LIS)

      • ج.م.‏ 17,952 is the lowest price for a one-way St Louis Airport to Lisbon Airport flight. Return flights start from ج.م.‏ 36,343. These fares may change depending on demand.

      • To find cheap tickets from STL to LIS, book as early as you can. Airlines typically offer the most competitive fares when flights are first made available.

      • Finding cheap flights from St Louis Airport to Lisbon Airport is easier if you're flexible with your travel dates. Use the 'Whole month' search function to see the lowest prices across each month and score a great deal.

      • Landing cheap flights from STL to LIS is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll let you know as soon as a lower fare pops up.

      • Select your preferred departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from St Louis Airport to Lisbon Airport.

      Handy information about St Louis Airport (STL)

      Arriving at Lisbon Airport (LIS)

      • The last thing you want is a long trip to your hotel if you're getting in late on a St Louis Airport to Lisbon Airport flight. Check in to one of these accommodation options near LIS instead:

      • Get on the fast track to adventure by picking up a Lisbon Airport rental car. Grab a set of wheels from Klass Wagen, Goldcar or OK Mobility and explore beyond Lisbon's usual tourist stops.

      • Lock in the lowest price by reserving your vehicle from Lisbon Airport around two weeks ahead of your trip.

      When to fly to Lisbon Airport (LIS)

      • August is the busiest month for flights from St Louis Airport to Lisbon Airport. For a quieter experience, travel to Lisbon in March.

      • Before locking in your flight from St Louis Airport to Lisbon Airport, think about the type of weather you enjoy. August is the warmest month in Lisbon, with temperatures ranging from 16ºC to 29ºC.

      • If you like travelling in cooler conditions, search for a cheap ticket from STL to LIS in January. Average temperatures are between 8ºC and 16ºC then.

      Explore more of Portugal

      • You've seen Lisbon, now it's time to discover more of Portugal. Travel around 274 kilometres north to Porto to check off its top attractions. From Ribeira District to Rio Douro and Livraria Lello, there's plenty to keep you on the go.

      • If you're looking to explore another well-known destination in Portugal, consider Amadora, about 8 kilometres north-west of Lisbon. Roman Villa, Park Fantasia and Palácio dos Condes da Lousã are key highlights.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.