How long is the flight from Boston to Cairns?

There are many flights that can get you from Boston to Cairns in 39h 30m. Fly via United Airlines to get the fastest option. The distance between Boston and Cairns is about 15517 km.

In terms of precipitation, rainfall in Cairns ranges from 20.0 - 430.0 inches per month. March is typically the wettest month, when rainfall can reach 430.0 mm. July is typically the driest time to visit Cairns when rainfall is around 20.0 mm.

If weather is an important factor for your trip to Cairns, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 21.0 C).

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

When flying from Boston to Cairns, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 holiday 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.

$931+ Cheap Flights from Boston to Cairns

Cheap flight deals from Boston to Cairns

Enter your travel dates to find the best prices.

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Best

Last-minute

One-way

Cheapest flights from Boston to Cairns
Explore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Mon 7/910:40 -

2 stops27h 50m

Thu 17/919:15 -

3 stops41h 25m

Deal found 27/8$2,232

Sun 8/1105:30 -

3 stops42h 25m

Wed 11/1106:00 -

2 stops28h 19m

Deal found 27/8$2,807

Mon 7/922:00 -

2 stops54h 25m

Thu 17/910:30 -

2 stops42h 45m

Deal found 28/8$3,070

Thu 24/912:30 -

3 stops35h 10m

Wed 30/919:10 -

3 stops52h 45m

Deal found 28/8$3,135

Find flight deals from Boston to Cairns

Round-trip from	$2,807
One-way from	$931

United Airlines
8/11-11/11
4 total stops
65h 19m total
Boston to Cairns

Search Deals

26/1
3 total stops
36h 15m total
Boston to Cairns

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 8/11

08:25-14:55

2 stops39h 30m

Cairns

Wed 11/11

06:00-16:49

2 stops25h 49m

$2,807

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Thu 24/9

12:30-13:40

3 stops35h 10m

Cairns

Wed 30/9

19:10-09:55

3 stops52h 45m

$3,135

Cheapest one-way

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 27/1

13:50-14:00

2 stops33h 10m

$1,105

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 25/1

07:30-14:00

2 stops39h 30m

$1,105

Fastest single journey

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 24/1

11:10-10:15

2 stops32h 05m

$1,111

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Thu 28/1

11:10-14:00

2 stops35h 50m

$1,189

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 12/10

12:56-19:50

2 stops40h 54m

$1,207

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 12/10

11:30-11:10

2 stops33h 40m

$1,245

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Sorted by cheapest first

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.

BOS-CNS

Estimated return 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.

Related info for your journey

How long is the flight from Boston to Cairns?
There are many flights that can get you from Boston to Cairns in 39h 30m. Fly via United Airlines to get the fastest option. The distance between Boston and Cairns is about 15517 km.
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 holiday 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.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Cairns.

Can Cheapflights find flights from Boston to Cairns with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to Cairns, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boston to Cairns become cheaper?

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Cheap flights from Boston to Cairns from $931

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to Cairns

Cheapest flights from Boston to CairnsExplore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Explore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from Boston to CairnsDiscover carefully curated flight deals from Boston to Cairns that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from Boston to Cairns that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from Boston to CairnsDiscover last-minute flight deals from Boston to Cairns. Data last updated 31 August 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Cairns. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Boston to CairnsSearch for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

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Best time to book a flight from Boston to Cairns

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Related info for your journey

How long is the flight from Boston to Cairns?

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

How can I find direct flights from Boston to Cairns?

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

Travelling to a place near Cairns?

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Alternative routes for Boston to Cairns

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Other flights to Cairns

Explore flights to Cairns departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 31 August 2026.

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Complete your trip to Cairns by adding a car hire and/or hotel booking to your travel itinerary.

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Boston and Cairns flights

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How does Cheapflights help users find flights from Boston to Cairns?

Why should you use Cheapflights to find cheap flight tickets from Boston to Cairns?

Can Cheapflights find flights from Boston to Cairns with no change fees?

Can Cheapflights notify me if prices for flights from Boston to Cairns become cheaper?

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Cheapest flights from Boston to Cairns
Explore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from Boston to Cairns
Discover carefully curated flight deals from Boston to Cairns that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Last-minute flights from Boston to Cairns
Discover last-minute flight deals from Boston to Cairns. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Boston to Cairns
Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.