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Cheap flights from Boston to Cairns from $813

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cairns departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Cairns

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
2:36 pm - 11:50 am
BOS
-
CNS
31h 14m
2 stops
Qantas Airways Logo
12:35 pm - 8:04 am
CNS
-
BOS
57h 29m
2 stops
$1,386Qantas Airways
Fri, Apr 3 - Fri, Apr 10
Qantas Airways Logo
10:20 am - 11:50 am
BOS
-
CNS
35h 30m
2 stops
Qantas Airways Logo
1:40 pm - 8:54 pm
CNS
-
BOS
45h 14m
2 stops
$1,412Qantas Airways
Sat, May 16 - Sat, May 30
American Airlines Logo
9:30 am - 11:00 am
BOS
-
CNS
35h 30m
2 stops
American Airlines Logo
3:35 pm - 3:13 pm
CNS
-
BOS
37h 38m
2 stops
$1,424American Airlines
Thu, Mar 12 - Tue, Mar 24
Qantas Airways Logo
8:26 am - 10:45 am
BOS
-
CNS
35h 19m
2 stops
Qantas Airways Logo
5:35 pm - 5:14 pm
CNS
-
BOS
37h 39m
2 stops
$1,452Qantas Airways
Fri, Mar 6 - Fri, Mar 13
Qantas Airways Logo
11:00 am - 10:50 am
BOS
-
CNS
33h 50m
2 stops
Qantas Airways Logo
6:20 pm - 8:04 am
CNS
-
BOS
51h 44m
2 stops
$1,468Qantas Airways
Thu, Apr 2 - Thu, Apr 9
Qantas Airways Logo
10:00 am - 12:55 pm
BOS
-
CNS
36h 55m
2 stops
Qantas Airways Logo
6:20 pm - 4:31 pm
CNS
-
BOS
36h 11m
2 stops
$1,485Qantas Airways
Tue, Jul 21 - Tue, Aug 4
Qantas Airways Logo
10:00 am - 5:35 pm
BOS
-
CNS
41h 35m
2 stops
Qantas Airways Logo
6:20 pm - 4:31 pm
CNS
-
BOS
36h 11m
2 stops
$1,553Qantas Airways
Mon, Jul 20 - Tue, Aug 4
Qantas Airways Logo
10:00 am - 12:55 pm
BOS
-
CNS
36h 55m
2 stops
Qantas Airways Logo
6:20 pm - 10:01 pm
CNS
-
BOS
41h 41m
2 stops
$1,555Qantas Airways
Mon, Jul 20 - Mon, Aug 3
Qantas Airways Logo
10:00 am - 12:55 pm
BOS
-
CNS
36h 55m
2 stops
Qantas Airways Logo
6:20 pm - 7:35 pm
CNS
-
BOS
39h 15m
2 stops
$1,586Qantas Airways
Mon, Jul 20 - Wed, Aug 5
United Airlines Logo
1:45 pm - 11:00 am
BOS
-
CNS
31h 15m
2 stops
United Airlines Logo
6:00 am - 11:57 pm
CNS
-
BOS
31h 57m
3 stops
$1,591United Airlines
Thu, Mar 12 - Tue, Mar 24

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
Mar 12
BOS1:45 pmBoston Logan Intl
31h 15m
2 stops
CNS11:00 amCairns
Mar 24
CNS6:00 amCairns
31h 57m
3 stops
BOS11:57 pmBoston Logan Intl
$1,591
United Airlines
Mar 12
BOS5:45 amBoston Logan Intl
43h 10m
3 stops
CNS2:55 pmCairns
Mar 24
CNS6:00 amCairns
31h 57m
3 stops
BOS11:57 pmBoston Logan Intl
$1,595
United Airlines
May 22
BOS6:26 pmBoston Logan Intl
28h 34m
2 stops
CNS1:00 pmCairns
May 29
CNS6:00 amCairns
25h 04m
2 stops
BOS5:04 pmBoston Logan Intl
$1,635

Singapore Airlines flights from Boston to Cairns

Our best Singapore Airlines deals on Boston to Cairns flight tickets
Singapore Airlines
Jul 10
BOS3:50 pmBoston Logan Intl
35h 10m
2 stops
CNS5:00 pmCairns
Jul 26
CNS6:15 pmCairns
37h 14m
3 stops
BOS5:29 pmBoston Logan Intl
$4,117
Singapore Airlines
Feb 28
BOS2:16 pmBoston Logan Intl
36h 04m
3 stops
CNS5:20 pmCairns
Mar 4
CNS6:35 pmCairns
40h 23m
3 stops
BOS7:58 pmBoston Logan Intl
$4,153

momondo 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, momondo users made 832,500 searches. Data last updated February 19, 2026.
Use the filters below to find and compare flights from Boston to Cairns that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 4/3

2:36 pm-11:50 am

2 stops31h 14m

Cairns

Fri 4/10

12:35 pm-8:04 am

2 stops57h 29m

$1,386

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 5/16

10:20 am-11:50 am

2 stops35h 30m

Cairns

Sat 5/30

1:40 pm-8:54 pm

2 stops45h 14m

$1,412

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 3/12

9:30 am-11:00 am

2 stops35h 30m

Cairns

Tue 3/24

3:35 pm-3:13 pm

2 stops37h 38m

$1,424

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 3/6

8:26 am-10:45 am

2 stops35h 19m

Cairns

Fri 3/13

5:35 pm-5:14 pm

2 stops37h 39m

$1,452

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 4/2

11:00 am-10:50 am

2 stops33h 50m

Cairns

Thu 4/9

6:20 pm-8:04 am

2 stops51h 44m

$1,468

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 7/21

10:00 am-12:55 pm

2 stops36h 55m

Cairns

Tue 8/4

6:20 pm-4:31 pm

2 stops36h 11m

$1,485

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/20

10:00 am-5:35 pm

2 stops41h 35m

Cairns

Tue 8/4

6:20 pm-4:31 pm

2 stops36h 11m

$1,553

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/20

10:00 am-12:55 pm

2 stops36h 55m

Cairns

Mon 8/3

6:20 pm-10:01 pm

2 stops41h 41m

$1,555

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/20

10:00 am-12:55 pm

2 stops36h 55m

Cairns

Wed 8/5

6:20 pm-7:35 pm

2 stops39h 15m

$1,586

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 3/12

1:45 pm-11:00 am

2 stops31h 15m

Cairns

Tue 3/24

6:00 am-11:57 pm

3 stops31h 57m

$1,591

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Cairns from

How to get the cheapest flight ticket from Boston to Cairns

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Boston Logan Intl to Cairns?

Japan Airlines is the most popular carrier operating from Boston Logan Intl to Cairns

When to book flights from Boston to Cairns

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Cairns according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Cairns (BOS to CNS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Cairns

Fastest flight time

31h 14m

Direct flights

None
The fastest flight from Boston to Cairns takes 31h 14m
There are no direct flights from Boston to Cairns. There are no popular flight routes from Boston to Cairns.
Search flight deals

  • How far is Boston Logan Intl to Cairns by plane?

    There are 9641.2 mi between Boston Logan Intl and Cairns. 31h 14m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Cairns Airport?

    Prices for flights from Boston Logan Intl Airport to Cairns Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Boston Logan Intl Airport to Cairns Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to Cairns Airport.

  • What documentation or ID do you need to fly to Cairns Airport?

    The necessary travel and health documents for your Cairns Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Cairns?

Book flights to Cairns if you plan to visit one of these locations
Port Douglas
Mission Beach
Palm Cove
Trinity Beach

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Cairns?

It is quick and easy to find Boston to Cairns flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cairns that suits you.

Can I find flights from Boston to Cairns with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cairns from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to Cairns?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Cairns.

I’m not ready to book a flight from Boston to Cairns right now. Can momondo alert me if prices change?

Price alerts on flights to Cairns from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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