Which airports can I use when flying from St. Louis to Cairns?

Flights from St. Louis to Cairns usually depart from Lambert-St Louis (STL) and arrive at Cairns (CNS).

What cabin classes can I book on flights from St. Louis to Cairns?

Only Economy Class is available on flights from St. Louis to Cairns.

Can I save money by using flexible dates for flights from St. Louis to Cairns?

Yes. Being flexible with your travel dates can save you up to 32% on the St. Louis to Cairns route. Monday is the cheapest departure day at $1,417 round-trip on average, while Saturday is the most expensive at $2,075, a difference of $658. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Cairns?

Some of the most popular sights in Cairns are Cairns Convention Centre and Reef Hotel Casino. These are among the most viewed places in Cairns on KAYAK.

Do I need a passport to fly from St. Louis to Cairns?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from St. Louis to Cairns changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,599 to $6,038. That means the highest observed fare was about 4x higher than the lowest one.

What is the time difference between St. Louis and Cairns?

Cairns is 15 hours ahead of St. Louis (Eastern Australia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Cairns Airport (CNS)?

Cairns Airport (CNS) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include: • Bargain Car Rentals • East Coast Car Rentals • Simba Car Hire • Ace Rental Cars • Budget

What is the cheapest airline to fly from St. Louis to Cairns?

Qantas Airways ($1,599) and Air Canada ($1,757) are the cheapest airlines to fly round-trip from St. Louis to Cairns according to KAYAK data over the last 5 days.

$1,599 CHEAP FLIGHTS from St. Louis to Cairns (STL - CNS)

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Cheapest round-trip

$1,599

Typical prices: $1,493-$1,772

Qantas Airways

Tue 2/13Sat 2/17

STL - CNS • 2 stops

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Flight Deals

Cheap Flights from St. Louis to Cairns (STL-CNS)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from St. Louis to Cairns

Sat, Feb 13 - Wed, Feb 17

2:54 pm - 7:15 pmSTL Lambert-St Louis-CNS Cairns

36h 21m2 stops Dallas/Fort Worth Brisbane

9:15 am - 11:48 pmCNS Cairns-STL Lambert-St Louis

30h 33m2 stops Brisbane Los Angeles Los Angeles

$1,599Qantas Airways

Sat, Feb 13 - Wed, Feb 17

2:54 pm - 10:40 pmSTL Lambert-St Louis-CNS Cairns

39h 46m2 stops Dallas/Fort Worth Brisbane

3:40 pm - 2:04 pmCNS Cairns-STL Lambert-St Louis

38h 24m2 stops Brisbane Dallas/Fort Worth

$1,604Qantas Airways

Sat, Feb 13 - Wed, Feb 17

7:01 pm - 7:15 pmSTL Lambert-St Louis-CNS Cairns

32h 14m2 stops Dallas/Fort Worth Brisbane

1:50 pm - 6:11 pmCNS Cairns-STL Lambert-St Louis

44h 21m2 stops Brisbane Dallas/Fort Worth

$1,604Qantas Airways

Sat, Feb 13 - Wed, Feb 17

2:54 pm - 7:15 pmSTL Lambert-St Louis-CNS Cairns

36h 21m2 stops Dallas/Fort Worth Brisbane

9:15 am - 11:48 pmCNS Cairns-STL Lambert-St Louis

30h 33m2 stops Brisbane Los Angeles Los Angeles

$1,638Qantas Airways

Sat, Feb 13 - Wed, Feb 17

4:05 pm - 2:55 pmSTL Lambert-St Louis-CNS Cairns

54h 50m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

3:45 pm - 3:26 pmCNS Cairns-STL Lambert-St Louis

63h 41m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

$1,757Air Canada

Sat, Feb 13 - Wed, Feb 17

4:05 pm - 2:55 pmSTL Lambert-St Louis-CNS Cairns

54h 50m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

3:45 pm - 3:26 pmCNS Cairns-STL Lambert-St Louis

63h 41m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

$1,776Air Canada

Tue, Dec 15 - Tue, Jan 19

2:54 pm - 2:55 pmSTL Lambert-St Louis-CNS Cairns

32h 01m2 stops Dallas/Fort Worth Brisbane

3:40 pm - 11:36 pmCNS Cairns-STL Lambert-St Louis

47h 56m2 stops Brisbane Los Angeles Los Angeles

$1,882Qantas Airways

Tue, Dec 15 - Thu, Jan 21

2:54 pm - 10:30 amSTL Lambert-St Louis-CNS Cairns

27h 36m2 stops Dallas/Fort Worth Brisbane

6:00 am - 11:36 pmCNS Cairns-STL Lambert-St Louis

33h 36m2 stops Brisbane Los Angeles Los Angeles

$1,882Qantas Airways

Mon, Dec 14 - Thu, Jan 21

7:06 pm - 10:30 amSTL Lambert-St Louis-CNS Cairns

23h 24m2 stops Dallas/Fort Worth Brisbane

5:40 pm - 11:36 pmCNS Cairns-STL Lambert-St Louis

45h 56m2 stops Brisbane Los Angeles Los Angeles

$1,882Qantas Airways

Mon, Dec 14 - Wed, Jan 20

7:06 pm - 7:15 pmSTL Lambert-St Louis-CNS Cairns

32h 09m2 stops Dallas/Fort Worth Brisbane

6:00 am - 11:36 pmCNS Cairns-STL Lambert-St Louis

33h 36m2 stops Brisbane Los Angeles Los Angeles

$1,882Qantas Airways

Booking Insights

Price, demand and travel trends for St. Louis to Cairns flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Cairns with more confidence.

Prices

Airlines

How much is a round-trip flight from St. Louis to Cairns?

Round-trip flights from St. Louis to Cairns start at $1,599. Prices are typical for this route right now, with typical round-trip fares ranging from $1,493 to $1,772. The lowest price found in the past 5 days was $1,599 on Qantas Airways.

Find deals

Cheapest flight	$1,599

Flight from St. Louis to Cairns

When to book flights from St. Louis to Cairns

Are your dates flexible? Find out the best times to travel from St. Louis to Cairns based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from St. Louis to Cairns?
Only Economy Class is available on flights from St. Louis to Cairns.
Do I need a passport to fly from St. Louis to Cairns?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from St. Louis to Cairns changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,599 to $6,038. That means the highest observed fare was about 4x higher than the lowest one.
What car rental options are available at Cairns Airport (CNS)?
Cairns Airport (CNS) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:
• Bargain Car Rentals
• East Coast Car Rentals
• Simba Car Hire
• Ace Rental Cars
• Budget
Which airports can I use when flying from St. Louis to Cairns?
Flights from St. Louis to Cairns usually depart from Lambert-St Louis (STL) and arrive at Cairns (CNS).
Can I save money by using flexible dates for flights from St. Louis to Cairns?
Yes. Being flexible with your travel dates can save you up to 32% on the St. Louis to Cairns route. Monday is the cheapest departure day at $1,417 round-trip on average, while Saturday is the most expensive at $2,075, a difference of $658. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between St. Louis and Cairns?
Cairns is 15 hours ahead of St. Louis (Eastern Australia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Cairns?
Some of the most popular sights in Cairns are Cairns Convention Centre and Reef Hotel Casino. These are among the most viewed places in Cairns on KAYAK.

If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $1,417 - about $658 less than Saturday (32% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Cairns Airport.
- Cairns Colonial Club Resort
- Cairns Sheridan Hotel
- Floriana Boutique Hotel

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STL - CNS

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Everything you should know

Cheap Flights from St. Louis to Cairns (STL-CNS)

Recent round-trip flight deals from St. Louis to Cairns

Recent one-way flight deals from St. Louis to Cairns

Price, demand and travel trends for St. Louis to Cairns flights

How much is a round-trip flight from St. Louis to Cairns?

What is the cheapest airline to fly from St. Louis to Cairns?

Key details for St. Louis to Cairns flights

Cheapest flight

When to book flights from St. Louis to Cairns

Your St. Louis to Cairns flight questions, answered

Your guide to booking St. Louis to Cairns flights

More options for your flight from St. Louis to Cairns

Complete your trip to Cairns with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from St. Louis to Cairns

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Flights from domestic origins to Cairns

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