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$1,392+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CNS
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap flight deals from St. Louis to Cairns

Cheapest flights from St. Louis to Cairns
Explore the most affordable flight options available from St. Louis to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This lastminute.com deal was found by Cheapflights users on 3/6. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:21 am
STL
-
CNS
2 stops37h 54m
Multiple Airlines
Mon 4/2710:15 am
CNS
-
STL
2 stops28h 42m
Multiple Airlines
Deal found 3/6$1,392
This Priceline deal was found by Cheapflights users on 3/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:05 pm
STL
-
CNS
3 stops54h 35m
Multiple Airlines
Tue 7/286:00 am
CNS
-
STL
3 stops32h 57m
Multiple Airlines
Deal found 3/5$1,401
This FlightHub deal was found by Cheapflights users on 3/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:21 am
STL
-
CNS
2 stops37h 14m
Qantas Airways
Mon 7/276:50 am
CNS
-
STL
2 stops24h 43m
Qantas Airways
Deal found 3/5$1,427
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/266:21 am
STL
-
CNS
2 stops37h 14m
Qantas Airways
Fri 7/3112:35 pm
CNS
-
STL
2 stops50h 24m
Qantas Airways
Deal found 3/5$1,436
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/266:21 am
STL
-
CNS
2 stops49h 24m
Qantas Airways
Tue 7/281:40 pm
CNS
-
STL
2 stops41h 53m
Qantas Airways
Deal found 3/5$1,461
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/266:21 am
STL
-
CNS
2 stops41h 39m
Qantas Airways
Sat 7/256:20 pm
CNS
-
STL
2 stops44h 39m
Qantas Airways
Deal found 3/5$1,471
This Qantas Airways deal was found by Cheapflights users on 3/6. 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 4/256:21 am
STL
-
CNS
2 stops49h 24m
Qantas Airways
Sun 7/2612:35 pm
CNS
-
STL
2 stops50h 24m
Qantas Airways
Deal found 3/6$1,486
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/253:38 pm
STL
-
CNS
2 stops33h 37m
Qantas Airways
Mon 7/275:00 pm
CNS
-
STL
2 stops45h 59m
Qantas Airways
Deal found 3/5$1,501
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/266:21 am
STL
-
CNS
2 stops41h 39m
Qantas Airways
Wed 7/296:20 pm
CNS
-
STL
2 stops37h 13m
Qantas Airways
Deal found 3/5$1,506
This Qantas Airways deal was found by Cheapflights users on 3/6. 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 4/256:21 am
STL
-
CNS
2 stops43h 34m
Qantas Airways
Tue 7/286:20 pm
CNS
-
STL
2 stops37h 13m
Qantas Airways
Deal found 3/6$1,511
This Qantas Airways deal was found by Cheapflights users on 3/5. 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 4/296:21 am
STL
-
CNS
2 stops38h 29m
Qantas Airways
Mon 7/275:00 pm
CNS
-
STL
2 stops45h 59m
Qantas Airways
Deal found 3/5$1,512

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,392
(lastminute.com)
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 March 10, 2026.
Use the filters below to find and compare flights from St. Louis to Cairns that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Sun 4/26

6:21 am-10:45 pm

2 stops49h 24m

Cairns

Sun 7/26

12:35 pm-11:59 pm

2 stops50h 24m

$1,436
Quickest round-trip

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 4/30

6:21 am-10:35 am

2 stops37h 14m

Cairns

Tue 7/28

6:20 pm-4:33 pm

2 stops37h 13m

$1,461

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Mon 4/27

6:21 am-4:55 pm

2 stops43h 34m

Cairns

Tue 7/28

1:40 pm-6:30 pm

2 stops43h 50m

$1,461

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 4/30

6:21 am-10:35 am

2 stops37h 14m

Cairns

Sat 7/25

6:20 pm-11:59 pm

2 stops44h 39m

$1,471

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Sun 4/26

6:21 am-10:35 am

2 stops37h 14m

Cairns

Fri 7/31

5:00 pm-11:59 pm

2 stops45h 59m

$1,486

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Sun 4/26

6:21 am-3:00 pm

2 stops41h 39m

Cairns

Mon 7/27

12:35 pm-11:59 pm

2 stops50h 24m

$1,486

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Sat 4/25

6:21 am-3:00 pm

2 stops41h 39m

Cairns

Sat 7/25

6:20 pm-11:59 pm

2 stops44h 39m

$1,522

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 4/30

6:21 am-4:55 pm

2 stops43h 34m

Cairns

Wed 7/29

1:40 pm-4:33 pm

2 stops41h 53m

$1,556

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Tue 4/28

6:21 am-11:50 am

2 stops38h 29m

Cairns

Sun 7/26

12:35 pm-11:59 pm

2 stops50h 24m

$1,562

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Wed 4/29

6:21 am-11:50 am

2 stops38h 29m

Cairns

Wed 7/29

6:20 pm-4:33 pm

2 stops37h 13m

$1,581

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 11 resultsSorted by cheapest first
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 March 10, 2026.
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
8.0
Very good
229 reviews

Crew

8.5

Food

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍
Fiji Airways
8.0
Very good
229 reviews
Fiji Airways
8.0
Very good
229 reviews

Crew

8.5

Food

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 18
10.0
Excellent

Anonymous,Feb 2026

SFO - NAN

Very friendly staff, warm service, well maintained aircraft, comfortable seats, and reliable on-time performance 👍👍

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 $1,436, Qantas Airways can have you in Cairns from St. Louis in 49h 24m. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$1,265Average$1,314FlexibilityNo cancel feeOn-time74%

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