C$1,358 Cheap Flights from Perth (PER) to St Louis (STL)

Compare Perth to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

Book the best St Louis fare with no extra fees

Flight deals from Perth to St Louis

Looking for a cheap last-minute deal or the best return flight from Perth Airport to St Louis Airport? If you want to travel next month, return fares start from C$2,687. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Perth to St Louis

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

Perth to St Louis: Alternative routes

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

Perth to St Louis: Flight information

The things to know before you go.
Cheapest flight foundC$1,358
Cheapest month to flyMay

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

The best price we found for a return flight from Perth to St Louis is C$2,504. 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 Perth to St Louis. But we found flights with one or more stops from C$2,504.
As of April 2026, there are no flights flying from Perth to St Louis.
The cheapest month to fly from Perth to St Louis is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Perth Airport to St Louis Airport on Friday, April 17, 2026.
No airlines currently offer direct flights between Perth Airport and St Louis 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 St Louis 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 St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Qatar Airways offers the cheapest flight tickets to St Louis.

Flying from Perth Airport (PER) to Lambert-St. Louis International Airport (STL): what you need to know

  • Popular months like July or high seasons such as Thanksgiving and Christmas will mean longer queues at check-in and security. Traveling then? Play it safe and head to the terminal even earlier. Arriving two hours before a domestic flight and up four hours ahead of an international flight is a smart move.

  • Before booking your cheap ticket from PER to STL, check whether you need a visa to enter United States. Visa and travel document requirements may differ and are updated frequently. To get the most up-to-date information, get in touch with the nearest embassy or consulate of the country you're traveling to.

How to find the cheapest flights from Perth Airport (PER) to Lambert-St. Louis International Airport (STL)

  • The lowest price we've seen for a one-way ticket from Perth Airport to Lambert-St. Louis International Airport is C$1,358. For a return flight on this route, the best price is C$2,504. Depending on the availability and when you book, these fares may change.

  • Don't leave things to the last minute. You're more likely to find cheap flight tickets from PER to STL if you book in advance. Airlines often offer some amazing early bird rates.

  • If you're flexible with your trip dates, use the 'Whole month' search tool. It'll give you the cheapest price across the month when looking for a ticket from Perth Airport to Lambert-St. Louis International Airport.

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

  • Take advantage of filters to find the best journey for you. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Perth Airport to Lambert-St. Louis International Airport, use the 'Sort by' tool. You can also filter results by departure and arrival times, airline, and number of stops.

Handy information about Perth Airport (PER)

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • Lambert-St. Louis International Airport to the center of St Louis takes around 21 minutes in a car. It's approximately 26 kilometres away. Find out what options are available, such as car rentals, cabs or ride-sharing services.

  • It takes roughly 36 minutes if you're traveling by public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Perth Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Choose the best time to go to St Louis based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • The warmest month in St Louis is July, with temperatures ranging between 17ºC and 33ºC. Lock in your flights from Perth Airport to Lambert-St. Louis International Airport in this month if you enjoy this type of weather.

  • For cooler conditions, search for a cheap ticket from PER to STL in January. Temperatures average between -8ºC and 7ºC then.

More about St Louis

Complete your St Louis trip with hotels and a car rental

  • You've locked in your cheap ticket to Lambert-St. Louis International Airport — now it's time to find somewhere to stay, and maybe even a set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in St Louis.

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