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Cheap flights from Boston to Cairns from $1,297

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cairns departing on 4/9. 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
5:54 pm - 4:15 pm
BOS
-
CNS
56h 21m
2 stops
Qantas Airways Logo
12:35 pm - 9:01 pm
CNS
-
BOS
46h 26m
2 stops
$1,297Qantas Airways
Thu, Apr 9 - Thu, Apr 16
American Airlines Logo
6:07 pm - 12:40 pm
BOS
-
CNS
28h 33m
2 stops
American Airlines Logo
3:45 pm - 6:59 am
CNS
-
BOS
29h 14m
2 stops
$1,406American Airlines
Thu, Jul 2 - Thu, Jul 23
Multiple Airlines Logo
6:00 pm - 12:40 pm
BOS
-
CNS
28h 40m
2 stops
Multiple Airlines Logo
3:45 pm - 9:26 am
CNS
-
BOS
31h 41m
3 stops
$1,768Multiple Airlines
Thu, Jul 2 - Thu, Jul 23
Multiple Airlines Logo
1:00 pm - 5:35 pm
BOS
-
CNS
38h 35m
3 stops
Multiple Airlines Logo
5:40 pm - 11:05 pm
CNS
-
BOS
67h 25m
2 stops
$1,838Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
Multiple Airlines Logo
1:00 pm - 1:40 pm
BOS
-
CNS
34h 40m
3 stops
Multiple Airlines Logo
7:10 pm - 10:39 pm
CNS
-
BOS
41h 29m
3 stops
$1,842Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
Qantas Airways Logo
8:00 am - 5:35 pm
BOS
-
CNS
43h 35m
2 stops
Qantas Airways Logo
6:00 am - 6:59 am
CNS
-
BOS
38h 59m
2 stops
$2,113Qantas Airways
Fri, Jul 10 - Sun, Jul 26
Qantas Airways Logo
6:00 pm - 5:35 pm
BOS
-
CNS
33h 35m
2 stops
Qantas Airways Logo
11:20 am - 11:29 pm
CNS
-
BOS
50h 09m
2 stops
$2,122Qantas Airways
Fri, Jul 10 - Sun, Jul 26
Qantas Airways Logo
8:00 am - 5:35 pm
BOS
-
CNS
43h 35m
2 stops
Qantas Airways Logo
1:55 pm - 11:29 pm
CNS
-
BOS
47h 34m
2 stops
$2,127Qantas Airways
Fri, Jul 10 - Sun, Jul 26
Qantas Airways Logo
6:00 pm - 5:35 pm
BOS
-
CNS
33h 35m
2 stops
Qantas Airways Logo
7:10 pm - 11:01 pm
CNS
-
BOS
41h 51m
3 stops
$2,504Qantas Airways
Fri, Jul 10 - Sun, Jul 26
Qantas Airways Logo
3:00 pm - 5:35 pm
BOS
-
CNS
36h 35m
2 stops
Qantas Airways Logo
7:10 pm - 11:01 pm
CNS
-
BOS
41h 51m
3 stops
$2,505Qantas Airways
Fri, Jul 10 - Sun, Jul 26

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Apr 11
BOS2:02 pmBoston Logan Intl
31h 48m
2 stops
CNS11:50 amCairns
Apr 18
CNS5:00 pmCairns
53h 04m
2 stops
BOS8:04 amBoston Logan Intl
$1,287
Qantas Airways
Apr 9
BOS5:54 pmBoston Logan Intl
56h 21m
2 stops
CNS4:15 pmCairns
Apr 16
CNS12:35 pmCairns
46h 26m
2 stops
BOS9:01 pmBoston Logan Intl
$1,297
Qantas Airways
Feb 28
BOS10:10 amBoston Logan Intl
33h 35m
2 stops
CNS10:45 amCairns
Mar 4
CNS3:35 pmCairns
44h 25m
2 stops
BOS9:00 pmBoston Logan Intl
$1,376

Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
Mar 5
BOS6:15 amBoston Logan Intl
41h 40m
3 stops
CNS2:55 pmCairns
Mar 9
CNS5:35 pmCairns
43h 02m
3 stops
BOS10:37 pmBoston Logan Intl
$2,179
Air Canada
Jul 2
BOS12:30 pmBoston Logan Intl
37h 25m
3 stops
CNS3:55 pmCairns
Jul 23
CNS7:15 pmCairns
41h 23m
3 stops
BOS10:38 pmBoston Logan Intl
$2,866

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 25, 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

Thu 4/9

5:54 pm-4:15 pm

2 stops56h 21m

Cairns

Thu 4/16

12:35 pm-9:01 pm

2 stops46h 26m

$1,297

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/2

6:07 pm-12:40 pm

2 stops28h 33m

Cairns

Thu 7/23

3:45 pm-6:59 am

2 stops29h 14m

$1,406

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/2

6:00 pm-12:40 pm

2 stops28h 40m

Cairns

Thu 7/23

3:45 pm-9:26 am

3 stops31h 41m

$1,768

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 4/9

1:00 pm-5:35 pm

3 stops38h 35m

Cairns

Thu 4/16

5:40 pm-11:05 pm

2 stops67h 25m

$1,838

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 4/9

1:00 pm-1:40 pm

3 stops34h 40m

Cairns

Thu 4/16

7:10 pm-10:39 pm

3 stops41h 29m

$1,842

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

8:00 am-5:35 pm

2 stops43h 35m

Cairns

Sun 7/26

6:00 am-6:59 am

2 stops38h 59m

$2,113

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

6:00 pm-5:35 pm

2 stops33h 35m

Cairns

Sun 7/26

11:20 am-11:29 pm

2 stops50h 09m

$2,122

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

8:00 am-5:35 pm

2 stops43h 35m

Cairns

Sun 7/26

1:55 pm-11:29 pm

2 stops47h 34m

$2,127

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

6:00 pm-5:35 pm

2 stops33h 35m

Cairns

Sun 7/26

7:10 pm-11:01 pm

3 stops41h 51m

$2,504

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

3:00 pm-5:35 pm

2 stops36h 35m

Cairns

Sun 7/26

7:10 pm-11:01 pm

3 stops41h 51m

$2,505

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

28h 33m

Direct flights

None
The fastest flight from Boston to Cairns takes 28h 33m
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. 28h 33m 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.

  • How do I get Price Alerts for flights from Boston to Cairns?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Boston from Cairns. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Boston to Cairns with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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