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

For as low as $1,587, Qantas Airways can have you in Cairns from St. Louis in 48h 50m. St. Louis and Cairns are separated by a distance of 8749 mi.

In terms of precipitation, rainfall in Cairns ranges from 0.8 - 16.9 inches per month. March is typically the wettest month, when rainfall can reach 16.9 in. July is typically the driest time to visit Cairns when rainfall is around 0.8 in.

If weather is an important factor for your trip to Cairns, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 69.8 F).

What is the cheapest time of day to fly from STL to CNS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Cairns as you normally would.

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.

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.

$1,587+ Flights from St. Louis to Cairns

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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 12, 2025.

Tue 2/175:55 pmSTL - CNS

2 stops48h 50mQantas Airways

Sat 2/2111:45 amCNS - STL

2 stops45h 20mQantas Airways

Deal found 12/9

$1,587

Find flight deals from St. Louis to Cairns

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 1 star
Round-trip from	$1,579 (Cathay Pacific)

Provider with most accurate pricing for Lambert-St Louis-Cairns flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Cairns flights.

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From Lambert-St Louis to Cairns

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Tue 2/17

5:55 pm-10:45 am

2 stops48h 50m

Cairns

Sat 2/21

11:45 am-5:05 pm

2 stops45h 20m

$1,587

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

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

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

210 reviews

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

210 reviews

Fiji Airways

8.1

Very good

210 reviews

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

How long is the flight from St. Louis to Cairns?
For as low as $1,587, Qantas Airways can have you in Cairns from St. Louis in 48h 50m. 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.

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Top airline flying from St. Louis to Cairns

Airline	Cheapest	Average	Flexibility	On-time
Fiji Airways	Cheapest$1,265	Average$1,314	FlexibilityNo cancel fee	On-time74%

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$1,587+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Cairns with Cheapflights

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Cheap flight deals from St. Louis to Cairns

Best flights from St. Louis to CairnsDiscover 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 12, 2025.

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 12, 2025.

Find flight deals from St. Louis to Cairns

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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.

Reviews of airlines servicing Cairns

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.

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?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Cairns

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Top airline flying from St. Louis to Cairns

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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 12, 2025.