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Cheap flights from Boston to Cairns from $825

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 7/16. 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.
Multiple Airlines Logo
10:45 am - 12:55 pm
BOS
-
CNS
36h 10m
3 stops
Multiple Airlines Logo
7:10 pm - 10:39 pm
CNS
-
BOS
41h 29m
3 stops
$1,568Multiple Airlines
Thu, May 28 - Thu, Jun 4
Multiple Airlines Logo
6:00 am - 3:55 pm
BOS
-
CNS
43h 55m
3 stops
Multiple Airlines Logo
7:10 pm - 9:55 am
CNS
-
BOS
52h 45m
3 stops
$1,651Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
2:25 pm - 2:40 pm
BOS
-
CNS
34h 15m
2 stops
Qantas Airways Logo
6:20 pm - 7:42 pm
CNS
-
BOS
39h 22m
2 stops
$1,693Qantas Airways
Mon, Sep 7 - Thu, Sep 17
Qatar Airways Logo
10:00 pm - 11:25 am
BOS
-
CNS
47h 25m
2 stops
Qatar Airways Logo
12:10 pm - 3:15 pm
CNS
-
BOS
41h 05m
2 stops
$1,731Qatar Airways
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
8:15 am - 10:35 am
BOS
-
CNS
36h 20m
2 stops
Multiple Airlines Logo
7:10 pm - 8:54 pm
CNS
-
BOS
39h 44m
2 stops
$1,755Multiple Airlines
Thu, May 28 - Thu, Jun 4
Qantas Airways Logo
5:40 pm - 5:35 pm
BOS
-
CNS
33h 55m
2 stops
Qantas Airways Logo
9:40 pm - 10:18 pm
CNS
-
BOS
38h 38m
2 stops
$1,771Qantas Airways
Fri, Jul 10 - Sun, Jul 26
Multiple Airlines Logo
6:00 am - 3:55 pm
BOS
-
CNS
43h 55m
3 stops
Multiple Airlines Logo
7:10 pm - 10:40 pm
CNS
-
BOS
41h 30m
3 stops
$1,786Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
American Airlines Logo
6:00 pm - 12:55 pm
BOS
-
CNS
28h 55m
2 stops
American Airlines Logo
3:45 pm - 7:05 am
CNS
-
BOS
29h 20m
2 stops
$1,807American Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
12:30 pm - 1:40 pm
BOS
-
CNS
35h 10m
3 stops
Multiple Airlines Logo
4:35 pm - 10:39 pm
CNS
-
BOS
44h 04m
3 stops
$1,812Multiple Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
6:00 pm - 12:55 pm
BOS
-
CNS
28h 55m
2 stops
Multiple Airlines Logo
6:45 am - 7:20 pm
CNS
-
BOS
26h 35m
2 stops
$1,813Multiple Airlines
Tue, May 26 - Tue, Jun 2

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Sep 7
BOS2:25 pmBoston Logan Intl
34h 15m
2 stops
CNS2:40 pmCairns
Sep 17
CNS6:20 pmCairns
39h 22m
2 stops
BOS7:42 pmBoston Logan Intl
$1,693
Qantas Airways
Jul 10
BOS5:40 pmBoston Logan Intl
33h 55m
2 stops
CNS5:35 pmCairns
Jul 26
CNS9:40 pmCairns
38h 38m
2 stops
BOS10:18 pmBoston Logan Intl
$1,771
Qantas Airways
May 29
BOS5:57 pmBoston Logan Intl
28h 58m
2 stops
CNS12:55 pmCairns
Jun 5
CNS1:55 pmCairns
30h 40m
2 stops
BOS6:35 amBoston Logan Intl
$1,835

Japan Airlines flights from Boston to Cairns

Our best Japan Airlines deals on Boston to Cairns flight tickets
Japan Airlines
Sep 7
BOS1:00 pmBoston Logan Intl
25h 30m
1 stop
CNS4:30 amCairns
Sep 17
CNS11:40 amCairns
41h 24m
2 stops
BOS3:04 pmBoston Logan Intl
$10,573
Japan Airlines
Sep 7
BOS1:00 pmBoston Logan Intl
25h 30m
1 stop
CNS4:30 amCairns
Sep 17
CNS11:40 amCairns
41h 24m
2 stops
BOS3:04 pmBoston Logan Intl
$10,578

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 April 15, 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

Thu 5/28

10:45 am-12:55 pm

3 stops36h 10m

Cairns

Thu 6/4

7:10 pm-10:39 pm

3 stops41h 29m

$1,568

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

6:00 am-3:55 pm

3 stops43h 55m

Cairns

Thu 9/17

7:10 pm-9:55 am

3 stops52h 45m

$1,651

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

2:25 pm-2:40 pm

2 stops34h 15m

Cairns

Thu 9/17

6:20 pm-7:42 pm

2 stops39h 22m

$1,693

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:25 am

2 stops47h 25m

Cairns

Thu 9/17

12:10 pm-3:15 pm

2 stops41h 05m

$1,731

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 5/28

8:15 am-10:35 am

2 stops36h 20m

Cairns

Thu 6/4

7:10 pm-8:54 pm

2 stops39h 44m

$1,755

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

5:40 pm-5:35 pm

2 stops33h 55m

Cairns

Sun 7/26

9:40 pm-10:18 pm

2 stops38h 38m

$1,771

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

6:00 am-3:55 pm

3 stops43h 55m

Cairns

Thu 9/17

7:10 pm-10:40 pm

3 stops41h 30m

$1,786

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/26

6:00 pm-12:55 pm

2 stops28h 55m

Cairns

Tue 6/2

3:45 pm-7:05 am

2 stops29h 20m

$1,807

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/26

12:30 pm-1:40 pm

3 stops35h 10m

Cairns

Tue 6/2

4:35 pm-10:39 pm

3 stops44h 04m

$1,812
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/26

6:00 pm-12:55 pm

2 stops28h 55m

Cairns

Tue 6/2

6:45 am-7:20 pm

2 stops26h 35m

$1,813

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

United 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

33h 55m

Direct flights

None
The fastest flight from Boston to Cairns takes 33h 55m
There are no direct flights from Boston to Cairns. There are no popular flight routes from Boston to Cairns.
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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. 33h 55m 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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