$694 Cheap Flights from Boston (BOS) to Cairns (CNS)

View $694 flight on Fri, Feb 20, 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Cairns Intl. Airport (CNS)

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Cheap Flights from Boston to Cairns (BOS-CNS)

Prices were available within the past 7 days and start at $694 for one-way flights and $1,355 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qantas Airways
Tue, Nov 11 - Tue, Nov 18
BOS
Boston
CNS
Cairns
$1,355 Roundtrip, found 1 day ago
$1,355
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Tue, Nov 11 from Boston to Cairns, returning Tue, Nov 18, priced at $1,355 found 1 day ago
Fiji Airways
Sat, Jan 24 - Thu, Feb 12
BOS
Boston
CNS
Cairns
$1,366 Roundtrip, found 5 days ago
$1,366
Roundtrip
found 5 days ago
Select Fiji Airways flight, departing Sat, Jan 24 from Boston to Cairns, returning Thu, Feb 12, priced at $1,366 found 5 days ago
Qantas Airways
Fri, Feb 20 - Fri, Feb 27
BOS
Boston
CNS
Cairns
$1,411 Roundtrip, found 3 days ago
$1,411
Roundtrip
found 3 days ago
Select Qantas Airways flight, departing Fri, Feb 20 from Boston to Cairns, returning Fri, Feb 27, priced at $1,411 found 3 days ago
Qantas Airways
Sun, Nov 9 - Sun, Nov 16
BOS
Boston
CNS
Cairns
$1,450 Roundtrip, found 1 day ago
$1,450
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Sun, Nov 9 from Boston to Cairns, returning Sun, Nov 16, priced at $1,450 found 1 day ago
Qantas Airways
Wed, Feb 4 - Fri, Feb 13
BOS
Boston
CNS
Cairns
$1,465 Roundtrip, found 3 days ago
$1,465
Roundtrip
found 3 days ago
Select Qantas Airways flight, departing Wed, Feb 4 from Boston to Cairns, returning Fri, Feb 13, priced at $1,465 found 3 days ago
Qantas Airways
Fri, Feb 20 - Fri, Feb 27
BOS
Boston
CNS
Cairns
$1,478 Roundtrip, found 3 days ago
$1,478
Roundtrip
found 3 days ago
Select Qantas Airways flight, departing Fri, Feb 20 from Boston to Cairns, returning Fri, Feb 27, priced at $1,478 found 3 days ago
United
Thu, Feb 12 - Sat, Feb 21
BOS
Boston
CNS
Cairns
$1,478 Roundtrip, found 5 days ago
$1,478
Roundtrip
found 5 days ago
Select United flight, departing Thu, Feb 12 from Boston to Cairns, returning Sat, Feb 21, priced at $1,478 found 5 days ago
Qantas Airways
Sat, Feb 7 - Sun, Feb 15
BOS
Boston
CNS
Cairns
$1,482 Roundtrip, found 3 days ago
$1,482
Roundtrip
found 3 days ago
Select Qantas Airways flight, departing Sat, Feb 7 from Boston to Cairns, returning Sun, Feb 15, priced at $1,482 found 3 days ago
American Airlines
Tue, Jan 27 - Mon, Feb 9
BOS
Boston
CNS
Cairns
$1,667 Roundtrip, found 5 days ago
$1,667
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Jan 27 from Boston to Cairns, returning Mon, Feb 9, priced at $1,667 found 5 days ago
Qatar Airways
Mon, Feb 9 - Fri, Feb 13
BOS
Boston
CNS
Cairns
$1,863 Roundtrip, found 6 days ago
$1,863
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Mon, Feb 9 from Boston to Cairns, returning Fri, Feb 13, priced at $1,863 found 6 days ago

Alternative airports near Cairns

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Cairns Intl. CNS. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $1,518
CNS
Cairns Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $1,518
Flights from Boston (BOS) to Cairns (CNS)
Origin airport
Logan Intl.
Destination airport
Cairns Intl.
Airlines serving
Air Canada, Air New Zealand, American Airlines, Cathay Pacific, Japan Airlines, Lufthansa, Qantas Airways, Qatar Airways, Singapore Airlines, Swiss International Air Lines, United
Roundtrip price
$1,354
Distance
9647 mi

Boston to Cairns Flights

The cheapest times to fly from Boston to Cairns

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Cairns are during the month of November. You can find some of the cheapest flights from Boston to Cairns with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Cairns

Sunday is one of the best days to book for cheap flights from Boston to Cairns: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Cairns

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Cairns in 2025. You can also book with separate airlines for your outbound and return journeys, from $694 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Cairns flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Cairns airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS) cost?
Lock in a cheap one-way flight from $694 or cheap return flight from $1,355 from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS)?
The cheapest month to fly from BOS to CNS is November, when there's less demand. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS)?
To find the cheapest airline that'll fly you from BOS to CNS, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS)?
You'll have to catch a flight with a layover if you're traveling from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from BOS to CNS?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS)?
To avoid possible delays on the Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS) route, aim to fly before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS) last-minute?
Holding off until just before your trip to book your flight from BOS to CNS generally means paying more. While you may come across some last-minute offers, there's no guarantee. Keep your travel plans flexible to maximize your chances of getting a bargain.
Is it cheaper to book a BOS to CNS flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOS to CNS flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of travel planning. Just secure your flights and select from our wide range of hotels, then personalize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Cairns Intl. Airport (CNS)?
Usually, it's possible to reschedule or cancel your BOS to CNS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.