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Cheap flights from Perth to St. Louis from $2,087

PER — STL
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Perth to St. Louis

Enter your travel dates to find the best prices.

Best flights from Perth to St. Louis

Sat 20/215:20 -
2 stops46h 39m
Mon 1/318:54 -
2 stops57h 31m
Deal found 10/11$2,087
Sat 20/222:55 -
3 stops34h 37m
Mon 1/314:21 -
3 stops33h 59m
Deal found 10/11$3,595

Find flight deals from Perth to St. Louis

Round-trip from

$2,087
Qantas Airways
  • Qantas Airways
  • 20/2-1/3
  • 4 total stops
  • 104h 10m total
  • Perth to St. Louis
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Perth to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PerthSt. Louis

PER Perth - STL Lambert-St Louis

PERSTL

Perth

Sat 20/2

15:20-23:59

2 stops46h 39m

Lambert-St Louis

Mon 1/3

18:54-18:25

2 stops57h 31m

$2,087
Fastest return journey

PerthSt. Louis

PER Perth - STL Lambert-St Louis

PERSTL

Perth

Sat 20/2

22:55-19:32

3 stops34h 37m

Lambert-St Louis

Mon 1/3

14:21-14:20

3 stops33h 59m

$3,595

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Sorted by cheapest first

Best time to book a flight from Perth to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Perth with our price prediction graph.
Estimated return price

Reviews of airlines servicing St. Louis

Check out reviews from past customers who have flown with Qantas Airways from Perth to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
1,123 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Entertainment

7.2

Comfort

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
Qantas Airways
7.5
Good
1,123 reviews
Qantas Airways
7.5
Good
1,123 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Entertainment

7.2

Comfort

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!

Related info for your journey

  • How long is the flight from Perth to St. Louis?

    For as low as $2,087, Qantas Airways can have you in St. Louis from Perth in 46h 39m. The distance from Perth to St. Louis is about 17506 km.

  • What is the cheapest airline to fly from Perth to St. Louis round-trip?

    According to our current data, Qantas Airways ($1,898), offers the cheapest pricing from Perth to St. Louis.

  • Can I find deals for flights from Perth to St. Louis that include hotel bookings?

    Yes. In addition to deals on Perth to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Perth to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Perth to St. Louis.

  • Can I find deals for business class flights from Perth to St. Louis?

    Yes. Cheapflights offers flight deals from Perth to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Perth to St. Louis

AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,898Average$2,279FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

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