How long is the flight from Boston to Cairns?

There are many flights that can get you from Boston to Cairns in 35h 50m. Fly via United Airlines, Emirates, or Qantas Airways to get the fastest option. The distance between Boston and Cairns is about 15517 km. This flight may include one or multiple stops.

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.

$1,088+ Cheap Flights from Boston to Cairns

Cheap flight deals from Boston to Cairns

Enter your travel dates to find the best prices.

Cheapest

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 11 September 2026.

Tue 6/1007:45 -

2 stops41h 10m

Tue 13/1006:00 -

3 stops31h 59m

Deal found 8/9$2,364

Sat 3/1014:45 -

2 stops40h 45m

Mon 12/1017:25 -

3 stops44h 14m

Deal found 11/9$2,862

Sun 8/1122:10 -

2 stops44h 25m

Wed 11/1115:40 -

2 stops61h 15m

Deal found 6/9$2,961

Sat 3/1016:35 -

2 stops29h 20m

Mon 12/1015:45 -

2 stops30h 32m

Deal found 11/9$2,971

Sun 8/1109:00 -

2 stops35h 50m

Wed 11/1111:40 -

2 stops35h 07m

Deal found 8/9$2,978

Sat 3/1016:35 -

2 stops29h 20m

Sun 11/1015:45 -

2 stops30h 32m

Deal found 11/9$3,040

Sun 4/1013:55 -

2 stops34h 10m

Mon 12/1017:25 -

2 stops40h 19m

Deal found 11/9$3,109

Sat 24/1023:05 -

2 stops46h 45m

Sat 31/1006:00 -

2 stops70h 55m

Deal found 9/9$3,125

Mon 7/923:05 -

2 stops57h 40m

Thu 17/907:30 -

2 stops44h 45m

Deal found 7/9$3,409

Find flight deals from Boston to Cairns

Round-trip from	$2,364
One-way from	$1,088

6/10-13/10
5 total stops
73h 09m total
Boston to Cairns

Search Deals

28/1-31/12
3 total stops
48h 10m total
Boston to Cairns

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Tue 26/1

17:55-23:05

2 stops38h 10m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,098

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

$1,105

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

$1,105

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Tue 26/1

15:15-14:55

2 stops32h 40m

Cairns

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,110

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

$1,110

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Tue 6/10

07:45-14:55

2 stops41h 10m

Cairns

Tue 13/10

06:00-22:57

2 stops30h 57m

$2,364

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 8/11

22:10-09:35

2 stops44h 25m

Cairns

Wed 11/11

15:40-13:55

2 stops61h 15m

$2,961

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 8/11

09:00-11:50

2 stops35h 50m

Cairns

Wed 11/11

11:40-07:47

2 stops35h 07m

$2,978

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sun 4/10

18:17-16:45

2 stops32h 28m

Cairns

Mon 12/10

17:25-17:10

2 stops37h 45m

$3,109

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 24/10

23:05-11:50

2 stops46h 45m

Cairns

Sat 31/10

06:00-14:55

2 stops70h 55m

$3,125

Flights are sorted by cheapest return flights first.

Deals found on 8/9

Showing 1-10 of 12 resultsSorted 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 35h 50m. Fly via United Airlines, Emirates, or Qantas Airways to get the fastest option. The distance between Boston and Cairns is about 15517 km. This flight may include one or multiple stops.
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 $1,088

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/1. 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 11 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 11 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 11 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 11 September 2026.

Last-minute flights from Boston to CairnsDiscover last-minute flight deals from Boston to Cairns. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Cairns. Data last updated 11 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 11 September 2026.

Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated 11 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 11 September 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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Find flights from Boston to Cairns, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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 11 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 11 September 2026.

Last-minute flights from Boston to Cairns
Discover last-minute flight deals from Boston to Cairns. Data last updated 11 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 11 September 2026.