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Cheap flights from Boston to Cairns from $749

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 10/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Boston to Cairns

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:30 am - 12:55 pm
BOS
-
CNS
36h 25m
2 stops
Multiple Airlines Logo
6:45 am - 7:52 pm
CNS
-
BOS
27h 07m
2 stops
$1,344Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
2:00 pm - 11:10 am
BOS
-
CNS
31h 10m
2 stops
United Airlines Logo
6:00 am - 9:02 pm
CNS
-
BOS
29h 02m
2 stops
$1,373United Airlines
Sun, Aug 23 - Tue, Sep 1
United Airlines Logo
4:15 pm - 11:10 am
BOS
-
CNS
28h 55m
2 stops
United Airlines Logo
6:00 am - 11:59 pm
CNS
-
BOS
31h 59m
3 stops
$1,373United Airlines
Sun, Aug 23 - Tue, Sep 1
United Airlines Logo
5:01 pm - 11:10 am
BOS
-
CNS
52h 09m
3 stops
United Airlines Logo
6:00 am - 5:07 pm
CNS
-
BOS
25h 07m
2 stops
$1,391United Airlines
Sat, Aug 22 - Tue, Sep 1
United Airlines Logo
5:01 pm - 11:10 am
BOS
-
CNS
52h 09m
3 stops
United Airlines Logo
6:00 am - 11:59 pm
CNS
-
BOS
31h 59m
3 stops
$1,391United Airlines
Sat, Aug 22 - Tue, Sep 1
American Airlines Logo
2:32 pm - 12:55 pm
BOS
-
CNS
32h 23m
2 stops
American Airlines Logo
1:55 pm - 8:13 am
CNS
-
BOS
32h 18m
2 stops
$1,393American Airlines
Mon, Sep 7 - Thu, Sep 17
American Airlines Logo
4:59 pm - 12:55 pm
BOS
-
CNS
29h 56m
2 stops
American Airlines Logo
1:55 pm - 8:13 am
CNS
-
BOS
32h 18m
2 stops
$1,405American Airlines
Wed, Sep 9 - Wed, Sep 16
American Airlines Logo
4:59 pm - 12:55 pm
BOS
-
CNS
29h 56m
2 stops
American Airlines Logo
1:55 pm - 7:36 am
CNS
-
BOS
31h 41m
2 stops
$1,414American Airlines
Fri, Aug 21 - Fri, Aug 28
Qantas Airways Logo
2:32 pm - 1:45 pm
BOS
-
CNS
33h 13m
2 stops
Qantas Airways Logo
6:50 am - 7:36 am
CNS
-
BOS
38h 46m
2 stops
$1,435Qantas Airways
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
4:35 pm - 12:55 pm
BOS
-
CNS
30h 20m
2 stops
Multiple Airlines Logo
6:45 am - 7:52 pm
CNS
-
BOS
27h 07m
2 stops
$1,508Multiple Airlines
Fri, Sep 11 - Fri, Sep 18

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Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Aug 11
BOS2:32 pmBoston Logan Intl
33h 13m
2 stops
CNS1:45 pmCairns
Aug 18
CNS6:50 amCairns
38h 46m
2 stops
BOS7:36 amBoston Logan Intl
$1,435
Qantas Airways
Sep 7
BOS5:51 amBoston Logan Intl
41h 04m
2 stops
CNS12:55 pmCairns
Sep 17
CNS7:00 amCairns
54h 28m
2 stops
BOS11:28 pmBoston Logan Intl
$1,532
Qantas Airways
Aug 13
BOS3:59 pmBoston Logan Intl
30h 56m
2 stops
CNS12:55 pmCairns
Aug 18
CNS6:50 amCairns
26h 52m
2 stops
BOS7:42 pmBoston Logan Intl
$1,535

American Airlines flights from Boston to Cairns

Our best American Airlines deals on Boston to Cairns flight tickets
American Airlines
Sep 7
BOS2:32 pmBoston Logan Intl
32h 23m
2 stops
CNS12:55 pmCairns
Sep 17
CNS1:55 pmCairns
32h 18m
2 stops
BOS8:13 amBoston Logan Intl
$1,393
American Airlines
Sep 9
BOS4:59 pmBoston Logan Intl
29h 56m
2 stops
CNS12:55 pmCairns
Sep 16
CNS1:55 pmCairns
32h 18m
2 stops
BOS8:13 amBoston Logan Intl
$1,405
American Airlines
Aug 21
BOS4:59 pmBoston Logan Intl
29h 56m
2 stops
CNS12:55 pmCairns
Aug 28
CNS1:55 pmCairns
31h 41m
2 stops
BOS7:36 amBoston Logan Intl
$1,414

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 July 28, 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

Cheapest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 9/9

10:30 am-12:55 pm

2 stops36h 25m

Cairns

Wed 9/16

6:45 am-7:52 pm

2 stops27h 07m

$1,344

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/23

2:00 pm-11:10 am

2 stops31h 10m

Cairns

Tue 9/1

6:00 am-9:02 pm

2 stops29h 02m

$1,373

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/23

4:15 pm-11:10 am

2 stops28h 55m

Cairns

Tue 9/1

6:00 am-11:59 pm

3 stops31h 59m

$1,373

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 8/22

5:01 pm-11:10 am

3 stops52h 09m

Cairns

Tue 9/1

6:00 am-5:07 pm

2 stops25h 07m

$1,391

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 8/22

5:01 pm-11:10 am

3 stops52h 09m

Cairns

Tue 9/1

6:00 am-11:59 pm

3 stops31h 59m

$1,391

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

2:32 pm-12:55 pm

2 stops32h 23m

Cairns

Thu 9/17

1:55 pm-8:13 am

2 stops32h 18m

$1,393

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 9/9

4:59 pm-12:55 pm

2 stops29h 56m

Cairns

Wed 9/16

1:55 pm-8:13 am

2 stops32h 18m

$1,405

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 8/21

4:59 pm-12:55 pm

2 stops29h 56m

Cairns

Fri 8/28

1:55 pm-7:36 am

2 stops31h 41m

$1,414

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 8/11

2:32 pm-1:45 pm

2 stops33h 13m

Cairns

Tue 8/18

6:50 am-7:36 am

2 stops38h 46m

$1,435
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 9/11

4:35 pm-12:55 pm

2 stops30h 20m

Cairns

Fri 9/18

6:45 am-7:52 pm

2 stops27h 07m

$1,508

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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?

American 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

35h 20m

Direct flights

None
The fastest flight from Boston to Cairns takes 35h 20m
There are no direct flights from Boston to Cairns. There are no popular flight routes from Boston to Cairns.
Search flight deals

Frequently asked questions about flying 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. 35h 20m 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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