HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Cairns

$1,308+ Cheap flights from Boston (BOS) 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Cairns with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Cairns

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 September 17, 2025.

Round-trip from

$1,308
(Priceline)
From Boston Logan Intl to Cairns
Search Deals

Find flight deals from Boston to Cairns

Best flights from Boston to Cairns
Discover carefully curated flight deals from Boston to Cairns that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2025.

This Priceline deal was found by Cheapflights users on 9/15. 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.
Sat 1/242:34 pmBOS - CNS
2 stops29h 26mQantas Airways
Fri 5/12:55 pmCNS - BOS
2 stops30h 10mQantas Airways
Deal found 9/15$1,308
This Cathay Pacific deal was found by Cheapflights users on 9/14. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/712:30 amBOS - CNS
1 stop43h 00mCathay Pacific
Thu 2/1212:00 pmCNS - BOS
1 stop25h 00mCathay Pacific
Deal found 9/14$1,637
This Qatar Airways deal was found by Cheapflights users on 9/15. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/88:40 pmBOS - CNS
2 stops35h 25mQatar Airways
Thu 2/125:20 pmCNS - BOS
2 stops36h 00mQatar Airways
Deal found 9/15$1,773
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/248:40 pmBOS - CNS
2 stops47h 40mMultiple Airlines
Fri 5/111:00 amCNS - BOS
3 stops42h 05mMultiple Airlines
Deal found 9/16$1,854
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/245:45 amBOS - CNS
3 stops46h 20mUnited Airlines
Fri 5/16:00 amCNS - BOS
3 stops31h 54mUnited Airlines
Deal found 9/15$1,980

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 September 17, 2025.
Use the filters below to find and compare flights from Boston to Cairns that are best for you.

Fly from

Boston

Fly to

Cairns

Route

Depart

Return

Price

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 1/24

2:34 pm-11:00 am

2 stops29h 26m

Cairns

Fri 5/1

2:55 pm-7:05 am

2 stops30h 10m

$1,308

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 2/7

12:30 am-10:30 am

1 stop43h 00m

Cairns

Thu 2/12

12:00 pm-10:00 pm

1 stop25h 00m

$1,637

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

8:40 pm-11:05 pm

2 stops35h 25m

Cairns

Thu 2/12

5:20 pm-2:20 pm

2 stops36h 00m

$1,773

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 1/24

8:40 pm-11:20 am

2 stops47h 40m

Cairns

Fri 5/1

11:00 am-3:05 pm

3 stops42h 05m

$1,854

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 1/24

5:45 am-7:05 pm

3 stops46h 20m

Cairns

Fri 5/1

6:00 am-11:54 pm

3 stops31h 54m

$1,980

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/29

9:35 pm-8:55 pm

3 stops57h 20m

$11,126

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/29

6:00 pm-1:35 pm

2 stops29h 35m

$18,129

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Best time to book a flight from Boston to Cairns

Have a flexible travel schedule? Discover the best time to fly to Cairns from Boston 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.

Cheapflights Insights

Everything you need to know about your flight from Boston to Cairns

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

Find hourly flight availability from Boston to Cairns. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from Boston to Cairns is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 23% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Boston 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 Boston to Cairns?

    Qantas Airways and Cathay Pacific can get you from Boston to Cairns in just under 29h 26m. Your travel time can differ by up to 13h 34m. Airlines will cover a distance of 9642 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Boston to Cairns that include hotel bookings?

    Yes. In addition to deals on Boston to Cairns flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Cairns?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Cairns.

  • Can I find deals for business class flights from Boston to Cairns?

    Yes. Cheapflights offers flight deals from Boston 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 Boston to Cairns?

    Currently, February is the cheapest month in which you can book a flight from Boston to Cairns (average of $1,140). Flying from Boston to Cairns in December is currently the most expensive (average of $1,878). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Cairns

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Brisbane flights
Boston to Maroochydore flights
Hartford to Brisbane flights
Boston to Townsville flights
Albany to Brisbane flights
Boston to Roma flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.