Cheap flights from St. Louis to Perth from $1,743
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Perth departing on 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from St. Louis to Perth
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Perth?
The cheapest day to depart on your flight to Perth is on a Thursday when prices can be found for as low as $1,649. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Perth is Wednesday, with ticket prices averaging around $1,955.
What is the cheapest time of day to depart on your flight to Perth?
At noon is the cheapest time of day to fly from St. Louis to Perth when you can find flight prices for as low as $1,804. Flying to Perth at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $3,392. Of course, these prices can vary depending on the time of year and what airport you fly to.
When to book flights from St. Louis to Perth
Cheap St. Louis to Perth (STL to PER) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Perth
How far is Lambert-St Louis to Perth by plane?
Lambert-St Louis and Perth are 10895.1 mi apart from one another. By plane, this route typically takes 28h 20m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Perth Airport?
Prices for flights from Lambert-St Louis Airport to Perth Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Perth Airport?
The number of operators available for flights from Lambert-St Louis Airport to Perth Airport is 3 as of April 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Perth Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Perth Airport.
What documentation or ID do you need to fly to Perth Airport?
The travel and health documents you'll need for your trip to Perth Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Perth Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Perth?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Perth is United Airlines (42% of total bookings). The next most popular airlines are Qantas Airways (29%) and Qatar Airways (29%).
Best airlines flying from St. Louis to Perth
Compare and see reviews for airlines that fly from St. Louis to Perth with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,450 | Free Cancellation | Rating 7.4 3,563 reviews | |||
| PriceFrom $1,691 | Free Cancellation | Rating 7.5 828 reviews | |||
| PriceFrom $1,928 | Free Cancellation | Rating 7.4 8,696 reviews |
Traveling to a place near Perth?
Book flights to Perth if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Perth?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Perth from St. Louis.
Can I find flights from St. Louis to Perth with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Perth from St. Louis with this policy.
How can momondo help me find flights from St. Louis to Perth?
Once you have performed a search for St. Louis to Perth flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from St. Louis to Perth right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis to Perth flights. All you need is a valid email address and we will do the rest; it is that quick and easy.