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Cheap flights from Boston to Cairns from $840

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 5/24. 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
6:11 pm - 1:40 pm
BOS
-
CNS
29h 29m
2 stops
Multiple Airlines Logo
7:10 pm - 5:05 pm
CNS
-
BOS
35h 55m
2 stops
$1,707Multiple Airlines
lun., sept. 7 - jeu., sept. 17
Multiple Airlines Logo
4:25 pm - 10:40 pm
BOS
-
CNS
40h 15m
2 stops
Multiple Airlines Logo
3:35 pm - 2:40 pm
CNS
-
BOS
37h 05m
2 stops
$1,776Multiple Airlines
lun., sept. 7 - jeu., sept. 17
Multiple Airlines Logo
10:00 pm - 11:25 am
BOS
-
CNS
47h 25m
2 stops
Multiple Airlines Logo
12:10 pm - 3:15 pm
CNS
-
BOS
41h 05m
2 stops
$1,791Multiple Airlines
lun., sept. 7 - jeu., sept. 17
Multiple Airlines Logo
10:00 pm - 9:50 am
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
12:10 pm - 3:15 pm
CNS
-
BOS
41h 05m
2 stops
$1,798Multiple Airlines
lun., sept. 7 - jeu., sept. 17
Qantas Airways Logo
2:25 pm - 10:10 pm
BOS
-
CNS
41h 45m
2 stops
Qantas Airways Logo
5:40 pm - 7:42 pm
CNS
-
BOS
40h 02m
2 stops
$1,891Qantas Airways
sam., oct. 24 - mer., oct. 28
United Airlines Logo
6:26 pm - 8:20 pm
BOS
-
CNS
35h 54m
2 stops
United Airlines Logo
6:00 am - 5:04 pm
CNS
-
BOS
25h 04m
2 stops
$1,894United Airlines
ven., juil. 3 - mer., juil. 22
Qantas Airways Logo
8:35 pm - 5:35 pm
BOS
-
CNS
55h 00m
2 stops
Qantas Airways Logo
3:45 pm - 8:31 am
CNS
-
BOS
30h 46m
2 stops
$1,954Qantas Airways
ven., juil. 10 - dim., juil. 26
Qantas Airways Logo
8:35 pm - 10:25 pm
BOS
-
CNS
59h 50m
2 stops
Qantas Airways Logo
9:40 pm - 11:10 pm
CNS
-
BOS
39h 30m
2 stops
$1,964Qantas Airways
ven., juil. 10 - dim., juil. 26
Multiple Airlines Logo
4:29 pm - 10:35 am
BOS
-
CNS
28h 06m
2 stops
Multiple Airlines Logo
3:35 pm - 6:35 am
CNS
-
BOS
29h 00m
2 stops
$1,999Multiple Airlines
jeu., juin 11 - jeu., juin 18
United Airlines Logo
4:15 pm - 11:55 pm
BOS
-
CNS
41h 40m
2 stops
United Airlines Logo
6:00 am - 11:54 pm
CNS
-
BOS
31h 54m
3 stops
$2,004United Airlines
sam., oct. 24 - mer., oct. 28

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Oct 24
BOS2:25 pmBoston Logan Intl
41h 45m
2 stops
CNS10:10 pmCairns
Oct 28
CNS5:40 pmCairns
40h 02m
2 stops
BOS7:42 pmBoston Logan Intl
$1,891
Qantas Airways
Jul 10
BOS8:35 pmBoston Logan Intl
55h 00m
2 stops
CNS5:35 pmCairns
Jul 26
CNS3:45 pmCairns
30h 46m
2 stops
BOS8:31 amBoston Logan Intl
$1,954
Qantas Airways
Jul 10
BOS8:35 pmBoston Logan Intl
59h 50m
2 stops
CNS10:25 pmCairns
Jul 26
CNS9:40 pmCairns
39h 30m
2 stops
BOS11:10 pmBoston Logan Intl
$1,964

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
Jul 3
BOS6:26 pmBoston Logan Intl
35h 54m
2 stops
CNS8:20 pmCairns
Jul 22
CNS6:00 amCairns
25h 04m
2 stops
BOS5:04 pmBoston Logan Intl
$1,894
United Airlines
Oct 24
BOS4:15 pmBoston Logan Intl
41h 40m
2 stops
CNS11:55 pmCairns
Oct 28
CNS6:00 amCairns
31h 54m
3 stops
BOS11:54 pmBoston Logan Intl
$2,004
United Airlines
Oct 24
BOS6:13 pmBoston Logan Intl
26h 47m
2 stops
CNS11:00 amCairns
Oct 28
CNS6:00 amCairns
31h 54m
3 stops
BOS11:54 pmBoston Logan Intl
$2,007

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 avril 28, 2026.
Use the filters below to find and compare flights from Boston to Cairns that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

lun. 9/7

6:11 pm-1:40 pm

2 stops29h 29m

Cairns

jeu. 9/17

7:10 pm-5:05 pm

2 stops35h 55m

$1,707

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

lun. 9/7

4:25 pm-10:40 pm

2 stops40h 15m

Cairns

jeu. 9/17

3:35 pm-2:40 pm

2 stops37h 05m

$1,776

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

lun. 9/7

10:00 pm-11:25 am

2 stops47h 25m

Cairns

jeu. 9/17

12:10 pm-3:15 pm

2 stops41h 05m

$1,791

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

lun. 9/7

10:00 pm-9:50 am

2 stops45h 50m

Cairns

jeu. 9/17

12:10 pm-3:15 pm

2 stops41h 05m

$1,798

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sam. 10/24

2:25 pm-10:10 pm

2 stops41h 45m

Cairns

mer. 10/28

5:40 pm-7:42 pm

2 stops40h 02m

$1,891

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

ven. 7/3

6:26 pm-8:20 pm

2 stops35h 54m

Cairns

mer. 7/22

6:00 am-5:04 pm

2 stops25h 04m

$1,894

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

ven. 7/10

8:35 pm-5:35 pm

2 stops55h 00m

Cairns

dim. 7/26

3:45 pm-8:31 am

2 stops30h 46m

$1,954

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

ven. 7/10

8:35 pm-10:25 pm

2 stops59h 50m

Cairns

dim. 7/26

9:40 pm-11:10 pm

2 stops39h 30m

$1,964
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

jeu. 6/11

4:29 pm-10:35 am

2 stops28h 06m

Cairns

jeu. 6/18

3:35 pm-6:35 am

2 stops29h 00m

$1,999

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sam. 10/24

4:15 pm-11:55 pm

2 stops41h 40m

Cairns

mer. 10/28

6:00 am-11:54 pm

3 stops31h 54m

$2,004

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, Qantas Airways, and American Airlines are the most popular carriers 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

36h 25m

Direct flights

None
The fastest flight from Boston to Cairns takes 36h 25m
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. 36h 25m 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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