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$2,047+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CNS
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap 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 July 29, 2025.

Round-trip from

$2,047
(Fiji Airways)
From Lambert-St Louis to Cairns
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Find 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 July 29, 2025.

This Fiji Airways deal was found by Cheapflights users on 7/26. 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 Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:41 pmSTL - CNS
2 stops24h 59mFiji Airways
Mon 8/1812:40 pmCNS - STL
2 stops25h 29mFiji Airways
Deal found 7/26$2,047
This Air Canada deal was found by Cheapflights users on 7/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/144:00 pmSTL - CNS
3 stops56h 55mAir Canada
Mon 8/184:35 pmCNS - STL
3 stops42h 10mAir Canada
Deal found 7/26$2,263

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 July 29, 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

Thu 8/14

7:41 pm-11:40 am

2 stops24h 59m

Cairns

Mon 8/18

12:40 pm-11:09 pm

2 stops25h 29m

$2,047

St. LouisCairns

STL - CNS

STLCNS

Lambert-St Louis

Thu 8/14

4:00 pm-3:55 pm

3 stops56h 55m

Cairns

Mon 8/18

4:35 pm-7:45 pm

3 stops42h 10m

$2,263

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

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 July 29, 2025.
Read reviews from past customers who have flown Fiji Airways and Air Canada 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
202 reviews

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Fiji Airways
8.0
Very good
202 reviews
Fiji Airways
8.0
Very good
202 reviews

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!
Air Canada
7.1
Good
9,826 reviews
Fiji Airways
8.0
Very good
202 reviews

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.5

Crew

8.5

Reviews

1 / 16
6.0
Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

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.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Cairns?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Cairns (average of $1,136). Flying from St. Louis to Cairns in December is currently the most expensive (average of $1,882). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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