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$1,338+ Cheap flights from St. Louis (STL) to Cairns (CNS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CNS
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from St. Louis to Cairns

Best flights from St. Louis to Cairns
Discover carefully curated flight deals from St. Louis to Cairns that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

This oojo deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:55 pmSTL - CNS
2 stops28h 10mQantas Airways
Tue 3/105:35 pmCNS - STL
2 stops45h 24mQantas Airways
Deal found 12/2$1,338
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:55 pmSTL - CNS
2 stops25h 05mMultiple Airlines
Tue 3/106:00 amCNS - STL
3 stops28h 29mMultiple Airlines
Deal found 12/2$1,379
This Qantas Airways deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:50 pmSTL - CNS
2 stops27h 15mQantas Airways
Thu 2/193:35 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/3$1,432
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:30 amSTL - CNS
2 stops40h 40mQantas Airways
Fri 6/51:40 pmCNS - STL
2 stops43h 40mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:30 amSTL - CNS
2 stops47h 30mQantas Airways
Tue 6/21:40 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:30 amSTL - CNS
2 stops47h 30mQantas Airways
Fri 6/51:40 pmCNS - STL
2 stops43h 40mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:30 amSTL - CNS
2 stops49h 40mQantas Airways
Sat 6/61:40 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:30 amSTL - CNS
2 stops49h 40mQantas Airways
Sat 6/61:40 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:30 amSTL - CNS
2 stops40h 40mQantas Airways
Fri 6/51:40 pmCNS - STL
2 stops43h 40mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:30 amSTL - CNS
2 stops49h 40mQantas Airways
Sun 6/71:40 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:30 amSTL - CNS
2 stops49h 40mQantas Airways
Fri 6/51:40 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/2$1,467
This Qantas Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:30 amSTL - CNS
2 stops37h 35mQantas Airways
Thu 6/41:40 pmCNS - STL
2 stops41h 30mQantas Airways
Deal found 12/2$1,467

Find flight deals from St. Louis to Cairns

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Cairns (CNS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$1,338
(oojo)
Provider with most accurate pricing for Lambert-St Louis-Cairns flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Cairns flights.
Search Deals
From Lambert-St Louis to Cairns
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Cairns that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from St. Louis to Cairns that are best for you.

Fly from

St. Louis

Fly to

Cairns

Route

Depart

Return

Price

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Tue 3/3

5:55 pm-2:05 pm

2 stops28h 10m

Cairns

Tue 3/10

5:35 pm-11:59 pm

2 stops45h 24m

$1,338

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Tue 3/3

5:55 pm-11:00 am

2 stops25h 05m

Cairns

Tue 3/10

6:00 am-7:29 pm

3 stops28h 29m

$1,379

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Sun 2/15

6:50 pm-2:05 pm

2 stops27h 15m

Cairns

Thu 2/19

3:35 pm-5:05 pm

2 stops41h 30m

$1,432

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Tue 5/26

6:30 am-2:10 pm

2 stops40h 40m

Cairns

Fri 6/5

1:40 pm-6:20 pm

2 stops43h 40m

$1,467

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Tue 5/26

6:30 am-9:00 pm

2 stops47h 30m

Cairns

Tue 6/2

1:40 pm-4:10 pm

2 stops41h 30m

$1,467

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Wed 5/27

6:30 am-9:00 pm

2 stops47h 30m

Cairns

Fri 6/5

1:40 pm-6:20 pm

2 stops43h 40m

$1,467

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Fri 5/29

6:30 am-11:10 pm

2 stops49h 40m

Cairns

Sat 6/6

1:40 pm-4:10 pm

2 stops41h 30m

$1,467

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Wed 5/27

6:30 am-11:10 pm

2 stops49h 40m

Cairns

Sat 6/6

1:40 pm-4:10 pm

2 stops41h 30m

$1,467

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 5/28

6:30 am-2:10 pm

2 stops40h 40m

Cairns

Fri 6/5

1:40 pm-6:20 pm

2 stops43h 40m

$1,467

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Sat 5/30

6:30 am-11:10 pm

2 stops49h 40m

Cairns

Sun 6/7

1:40 pm-4:10 pm

2 stops41h 30m

$1,467

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 12 results
1
2
  • Most accurate provider: When it comes to deals on St. Louis-Cairns flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Cairns flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Cairns flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Cairns flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Cairns flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Cairns from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Cairns

Get insights into the airlines that provide service to Cairns. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cairns. Reviews last updated December 4, 2025.
Read reviews from past customers who have flown Fiji Airways from St. Louis to Cairns. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Fiji Airways
8.1
Very good
209 reviews

Food

7.5

Comfort

8.0

Entertainment

7.5

Overall

8.1

Boarding

8.2

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.1
Very good
209 reviews
Fiji Airways
8.1
Very good
209 reviews

Food

7.5

Comfort

8.0

Entertainment

7.5

Overall

8.1

Boarding

8.2

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Cairns. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as $1,338, Qantas Airways can have you in Cairns from St. Louis in 28h 10m. St. Louis and Cairns are separated by a distance of 8749 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Cairns 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

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Alternative routes for St. Louis to Cairns

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from St. Louis to Cairns

Discover the top airline that operate flights from St. Louis to Cairns. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$1,265Average$1,314FlexibilityNo cancel feeOn-time74%

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