Users have found that booking a flight from St Louis to Portugal at least 61 days early can save you up to 78% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from St Louis to Portugal for as little as $1313 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1956 for flights departing within the next 3 days.
Flights from St Louis to Portugal lean towards being more expensive in August. Prices are generally better when you fly from St Louis to Portugal in February, with the cheapest ticket starting at $497.