How long is the flight from Boston to Cairns?

There are many flights that can get you from Boston to Cairns in 36h 55m. 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.

$1,063+ 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

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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 18 September 2026.

Sat 31/1013:32 -

3 stops31h 28m

Sat 7/1106:00 -

2 stops30h 24m

Deal found 15/9$2,176

Sun 8/1113:32 -

3 stops34h 23m

Wed 11/1106:00 -

3 stops32h 59m

Deal found 16/9$2,827

Mon 12/1023:05 -

2 stops43h 25m

Mon 19/1017:25 -

2 stops58h 55m

Deal found 13/9$2,975

Mon 12/1022:00 -

2 stops35h 20m

Mon 19/1019:00 -

2 stops58h 15m

Deal found 13/9$3,017

Find flight deals from Boston to Cairns

Round-trip from	$2,176
One-way from	$1,063

United Airlines
31/10-7/11
5 total stops
61h 52m total
Boston to Cairns

Search Deals

26/1-31/12
2 total stops
38h 10m 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

Mon 25/1

17:55-14:00

2 stops29h 05m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,070

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Tue 26/1

05:45-14:55

3 stops42h 10m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,070

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 27/1

13:55-14:00

2 stops33h 05m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,070

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 24/1

10:00-14:55

2 stops37h 55m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,077

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/11

09:45-16:40

2 stops39h 55m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,107

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 31/10

08:05-11:00

2 stops36h 55m

Cairns

Sat 7/11

06:00-19:25

2 stops28h 25m

$2,176

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Thu 21/1

07:30-14:55

2 stops40h 25m

Cairns

Fri 5/2

06:00-21:28

2 stops30h 28m

$2,180

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 8/11

13:32-14:55

3 stops34h 23m

Cairns

Wed 11/11

06:00-23:59

3 stops32h 59m

$2,827

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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 36h 55m. 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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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 $1,063

This is the cheapest retur 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 18 September 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 18 September 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 18 September 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 18 September 2026.

Last-minute flights from Boston to CairnsDiscover last-minute flight deals from Boston to Cairns. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Cairns. Data last updated 18 September 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 18 September 2026.

Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated 18 September 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 18 September 2026.

Complete your trip

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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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 18 September 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 18 September 2026.

Last-minute flights from Boston to Cairns
Discover last-minute flight deals from Boston to Cairns. Data last updated 18 September 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 18 September 2026.