STL - CNS

$2,241 Find Cheap Flights from St. Louis to Cairns - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$2,241
Typical prices: $1,493-$1,772
Qantas Airways
Thu 8/30Sun 9/2
STL - CNS • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Cairns!
Flight Deals
Booking Insights
Flight Deals

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

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

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

Sun, Aug 30 - Wed, Sep 2
Qantas Airways Logo
6:00 am - 11:50 amSTL  Lambert-St Louis-CNS Cairns
38h 50m2 stops Los Angeles Melbourne
Qantas Airways Logo
6:50 am - 10:59 pmCNS  Cairns-STL Lambert-St Louis
31h 09m2 stops Sydney Kingsford Smith Los Angeles
$2,241Qantas Airways
Sun, Aug 30 - Wed, Sep 2
Multiple Airlines Logo
2:29 pm - 11:50 amSTL  Lambert-St Louis-CNS Cairns
30h 21m3 stops Phoenix Sky Harbor Intl Los Angeles Melbourne
Multiple Airlines Logo
7:10 pm - 6:05 pmCNS  Cairns-STL Lambert-St Louis
37h 55m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$2,443Multiple Airlines
Sun, Aug 30 - Wed, Sep 2
Multiple Airlines Logo
2:40 pm - 1:40 pmSTL  Lambert-St Louis-CNS Cairns
32h 00m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith
Multiple Airlines Logo
7:10 pm - 2:02 pmCNS  Cairns-STL Lambert-St Louis
57h 52m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$3,354Multiple Airlines
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.

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

Round-trip flights from St. Louis to Cairns start at $2,241. Prices are above average 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 $2,241 on Qantas Airways.

Find deals

Key details for St. Louis to Cairns flights

Cheapest flight

$2,241
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

Your St. Louis to Cairns flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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 Esplanade, 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 varied from about $2,241 to $3,354. That means the highest observed fare was about 49% 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

  • How much should I expect to pay for a St. Louis to Cairns flight?

    Round-trip flights from St. Louis to Cairns range from $1,493 to $1,772, with an average of $1,543 over the past 12 months. Anything below $1,493 counts as a good deal.

Your guide to booking St. Louis to Cairns flights

Get tips on when to book, when to fly and what to know before your trip.
  • 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

Everything you need to know for your flight from St. Louis to Cairns

Information on your arrival and departure airports

St. Louis (STL)
Cairns (CNS)