PER - STL

Find Cheap Flights from Perth to St. Louis

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Perth to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Perth to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
Multiple Airlines
Tue 9/12
PER - STL • multi-stop
Cheapest one-way flight
Multiple Airlines
Tue 9/12
PER - STL • multi-stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Perth to St. Louis (PER-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Perth to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Perth to St. Louis

Multiple Airlines Logo
PER
-
STL
28175 kmmulti-stop
Multiple Airlines Logo
STL
-
PER
28175 kmmulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Perth to St. Louis flights

Get data-powered insights and trends into flights from Perth to St. Louis to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly direct between Perth and St. Louis?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Perth to St. Louis.

There is just one airline that flies from Perth to St. Louis direct and that is Qantas Airways. The best return deal found from Qantas Airways for the route is $1,699.

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Good to know

Low seasonOctober
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly and prices are also 16% lower on average.

When to book flights from Perth to St. Louis

Are your dates flexible? Find out the best times to travel from Perth to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Perth to St. Louis

  • Which aircraft models fly most regularly from Perth to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Perth to St. Louis?

    oneworld is the only airline alliance operating flights between Perth and St. Louis.

  • How does KAYAK find such low prices on flights from Perth to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Perth to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Perth to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Perth is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Perth to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to St. Louis with an airline and back to Perth with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Perth to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Perth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Perth to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Perth to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Perth to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Qantas AirwaysOverall score based on 947 reviews
7.7Boarding
7.0Food
7.2Entertainment
8.1Crew
7.5Comfort
Airline reviews

Flight was canceled. I was not alerted. It was only kayak that alerted me

2.0 MediocreGerard, Nov 2025
CBR - BNE
Read more Qantas Airways reviews

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

Basic airline, aircraft and service. AA gets you from point A to B. My flight was delayed by 2 hours too.

No internet on flight, which makes log travels really hard.

Not great. The inflight entertainment was all on an app, and I did not want to watch a film on my phone. Also, the range of options of films was limited.

My flight from Dallas to Sydney was cancelled. My entire trip was rerouted to include the following: Hartford to Washington DC Washington DC to JFK JFK to Auckland Auckland to Christchurch I paid for an aisle seat on the flight to Auckland and was asked if I would take a window seat to accommodate a family. The agent at the podium failed to mention that the family had a 3 month old baby and that a bassinet would be used during the 16 hour flight. The only way I could get out of my seat was to crawl under the bassinet of the sleeping baby. I think it is wrong that I was no given the choice to sit in another seat, that the agent knew what she was doing and chose to not properly disclose my seating arrangement. Terrible treatment.

they ran out of fruit for breakfast and so I just had a yogurt instead. other than that the flight was good

by the time they got to our row, they were out of some of the food options. games and movies were great but maybe more game options like tetris or pac man would be great

A few more inches of legroom is all i ask

Everything you need to know for your flight from Perth to St. Louis

Information on your arrival and departure airports

Perth (PER)
St. Louis (STL)