Cheap flights from Boston to Cairns from $713

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 2/22. 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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0 bags

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Cheap round-trip flights

Cathay Pacific Logo
12:30 am - 10:30 amBOS-CNS
43h 00m1 stop
Cathay Pacific Logo
12:00 pm - 10:00 pmCNS-BOS
25h 00m1 stop
$1,635Cathay Pacific
Find Deal
Sat, Feb 7 - Thu, Feb 12
Cathay Pacific Logo
12:30 am - 10:30 amBOS-CNS
43h 00m1 stop
Cathay Pacific Logo
12:00 pm - 10:00 pmCNS-BOS
25h 00m1 stop
$1,636Cathay Pacific
Find Deal
Sat, Feb 7 - Thu, Feb 12
Cathay Pacific Logo
12:30 am - 10:30 amBOS-CNS
43h 00m1 stop
Cathay Pacific Logo
12:00 pm - 10:00 pmCNS-BOS
25h 00m1 stop
$1,637Cathay Pacific
Find Deal
Sat, Feb 7 - Thu, Feb 12
Qatar Airways Logo
9:05 pm - 11:05 pmBOS-CNS
35h 00m2 stops
Qatar Airways Logo
5:20 pm - 2:20 pmCNS-BOS
36h 00m2 stops
$1,771Qatar Airways
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Sun, Feb 8 - Thu, Feb 12
Qatar Airways Logo
8:40 pm - 11:05 pmBOS-CNS
35h 25m2 stops
Qatar Airways Logo
5:20 pm - 2:20 pmCNS-BOS
60h 00m2 stops
$1,772Qatar Airways
Find Deal
Sun, Feb 8 - Thu, Feb 12
Emirates Logo
11:05 pm - 11:05 pmBOS-CNS
58h 00m2 stops
Emirates Logo
12:35 pm - 2:55 pmCNS-BOS
40h 20m2 stops
$2,015Emirates
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Sun, Oct 26 - Sun, Nov 2
Cathay Pacific Logo
9:45 am - 10:30 amBOS-CNS
33h 45m2 stops
Cathay Pacific Logo
12:00 pm - 10:00 pmCNS-BOS
25h 00m1 stop
$2,134Cathay Pacific
Find Deal
Sun, Feb 8 - Thu, Feb 12
Cathay Pacific Logo
9:45 am - 10:30 amBOS-CNS
33h 45m2 stops
Cathay Pacific Logo
12:00 pm - 10:00 pmCNS-BOS
25h 00m1 stop
$2,135Cathay Pacific
Find Deal
Sun, Feb 8 - Thu, Feb 12
United Airlines Logo
1:50 pm - 2:00 pmBOS-CNS
33h 10m2 stops
United Airlines Logo
6:00 am - 11:54 pmCNS-BOS
32h 54m3 stops
$2,328United Airlines
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Sun, Feb 8 - Thu, Feb 12
United Airlines Logo
10:56 am - 2:00 pmBOS-CNS
36h 04m2 stops
United Airlines Logo
6:00 am - 11:54 pmCNS-BOS
32h 54m3 stops
$2,329United Airlines
Find Deal
Sun, Feb 8 - Thu, Feb 12

Qatar Airways flights from Boston to Cairns

Our best Qatar Airways deals on Boston to Cairns flight tickets
Qatar Airways
Feb 8
BOS9:05 pmBoston Logan Intl
35h 00m
2 stops
CNS11:05 pmCairns
Feb 12
CNS5:20 pmCairns
36h 00m
2 stops
BOS2:20 pmBoston Logan Intl
Qatar Airways
Feb 8
BOS8:40 pmBoston Logan Intl
35h 25m
2 stops
CNS11:05 pmCairns
Feb 12
CNS5:20 pmCairns
60h 00m
2 stops
BOS2:20 pmBoston Logan Intl

Cathay Pacific flights from Boston to Cairns

Our best Cathay Pacific deals on Boston to Cairns flight tickets
Cathay Pacific
Feb 7
BOS12:30 amBoston Logan Intl
43h 00m
1 stop
CNS10:30 amCairns
Feb 12
CNS12:00 pmCairns
25h 00m
1 stop
BOS10:00 pmBoston Logan Intl
Cathay Pacific
Feb 7
BOS12:30 amBoston Logan Intl
43h 00m
1 stop
CNS10:30 amCairns
Feb 12
CNS12:00 pmCairns
25h 00m
1 stop
BOS10:00 pmBoston Logan Intl
Cathay Pacific
Feb 7
BOS12:30 amBoston Logan Intl
43h 00m
1 stop
CNS10:30 amCairns
Feb 12
CNS12:00 pmCairns
25h 00m
1 stop
BOS10:00 pmBoston Logan Intl

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 September 11, 2025.
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

Sat 2/7

12:30 am-10:30 am

1 stop43h 00m

Cairns

Thu 2/12

12:00 pm-10:00 pm

1 stop25h 00m

$1,635

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 2/7

12:30 am-10:30 am

1 stop43h 00m

Cairns

Thu 2/12

12:00 pm-10:00 pm

1 stop25h 00m

$1,636

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 2/7

12:30 am-10:30 am

1 stop43h 00m

Cairns

Thu 2/12

12:00 pm-10:00 pm

1 stop25h 00m

$1,637

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

9:05 pm-11:05 pm

2 stops35h 00m

Cairns

Thu 2/12

5:20 pm-2:20 pm

2 stops36h 00m

$1,771

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

8:40 pm-11:05 pm

2 stops35h 25m

Cairns

Thu 2/12

5:20 pm-2:20 pm

2 stops60h 00m

$1,772

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 10/26

11:05 pm-11:05 pm

2 stops58h 00m

Cairns

Sun 11/2

12:35 pm-2:55 pm

2 stops40h 20m

$2,015

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

9:45 am-10:30 am

2 stops33h 45m

Cairns

Thu 2/12

12:00 pm-10:00 pm

1 stop25h 00m

$2,134

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

9:45 am-10:30 am

2 stops33h 45m

Cairns

Thu 2/12

12:00 pm-10:00 pm

1 stop25h 00m

$2,135

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

1:50 pm-2:00 pm

2 stops33h 10m

Cairns

Thu 2/12

6:00 am-11:54 pm

3 stops32h 54m

$2,328

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

10:56 am-2:00 pm

2 stops36h 04m

Cairns

Thu 2/12

6:00 am-11:54 pm

3 stops32h 54m

$2,329

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 day to depart on your flight to Cairns?

Our data shows that Wednesday is the least expensive day to fly to Cairns. Tickets to fly out on this day can be as low as $1,714. The most expensive day to fly to Cairns is Tuesday, with ticket prices averaging around $1,843.

What is the cheapest time of day to depart on your flight to Cairns?

Our data shows that the cheapest Boston to Cairns flights are usually those with departure times in the afternoon. Our users have found flights to Cairns in the afternoon for as low as $1,822. At noon is when there is more demand to fly to Cairns, so prices are often more expensive at around $2,361 per ticket.

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

Direct flights

None
There are no direct flights from Boston to Cairns. There are no popular flight routes from Boston to Cairns.
  • How far is Boston Logan Intl to Cairns by plane?

    There are 9641.2 mi between Boston Logan Intl and Cairns. 33h 10m 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?

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1 adult
Sat 10/11
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