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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
4:35 pm - 12:55 pm
BOS
-
CNS
30h 20m
2 stops
Multiple Airlines Logo
6:50 am - 9:27 pm
CNS
-
BOS
28h 37m
2 stops
$1,419Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
American Airlines Logo
4:35 pm - 12:55 pm
BOS
-
CNS
30h 20m
2 stops
American Airlines Logo
3:45 pm - 8:13 am
CNS
-
BOS
30h 28m
2 stops
$1,441American Airlines
Sun, Sep 13 - Sun, Sep 20
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
Multiple Airlines Logo
10:00 pm - 11:20 pm
BOS
-
CNS
35h 20m
2 stops
Multiple Airlines Logo
4:55 pm - 3:15 pm
CNS
-
BOS
36h 20m
2 stops
$1,534Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:00 pm - 11:20 pm
BOS
-
CNS
35h 20m
2 stops
Multiple Airlines Logo
7:30 am - 3:15 pm
CNS
-
BOS
45h 45m
2 stops
$1,539Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:00 pm - 11:20 pm
BOS
-
CNS
35h 20m
2 stops
Multiple Airlines Logo
7:30 am - 3:15 pm
CNS
-
BOS
45h 45m
2 stops
$1,540Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
United Airlines Logo
9:20 am - 11:10 am
BOS
-
CNS
35h 50m
2 stops
United Airlines Logo
6:00 am - 9:02 pm
CNS
-
BOS
29h 02m
2 stops
$1,543United Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
12:30 pm - 1:40 pm
BOS
-
CNS
35h 10m
3 stops
Multiple Airlines Logo
4:35 pm - 9:55 am
CNS
-
BOS
55h 20m
3 stops
$1,548Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Qatar Airways Logo
10:00 pm - 11:20 pm
BOS
-
CNS
35h 20m
2 stops
Qatar Airways Logo
4:55 pm - 3:15 pm
CNS
-
BOS
36h 20m
2 stops
$1,556Qatar Airways
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
6:30 am - 10:35 am
BOS
-
CNS
38h 05m
2 stops
Qantas Airways Logo
3:45 pm - 11:28 pm
CNS
-
BOS
45h 43m
3 stops
$1,830Qantas Airways
Fri, Sep 11 - Fri, Sep 18

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United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
Sep 13
BOS9:20 amBoston Logan Intl
35h 50m
2 stops
CNS11:10 amCairns
Sep 20
CNS6:00 amCairns
29h 02m
2 stops
BOS9:02 pmBoston Logan Intl
$1,543
United Airlines
Sep 11
BOS11:34 amBoston Logan Intl
33h 36m
2 stops
CNS11:10 amCairns
Sep 15
CNS6:00 amCairns
31h 59m
3 stops
BOS11:59 pmBoston Logan Intl
$2,153
United Airlines
Dec 13
BOS6:00 amBoston Logan Intl
46h 05m
3 stops
CNS7:05 pmCairns
Dec 23
CNS6:00 amCairns
32h 57m
3 stops
BOS11:57 pmBoston Logan Intl
$9,115

Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
Sep 13
BOS12:30 pmBoston Logan Intl
32h 40m
3 stops
CNS11:10 amCairns
Sep 20
CNS7:15 pmCairns
41h 25m
3 stops
BOS10:40 pmBoston Logan Intl
$1,754
Air Canada
Sep 7
BOS6:00 amBoston Logan Intl
43h 55m
3 stops
CNS3:55 pmCairns
Sep 17
CNS7:15 pmCairns
54h 36m
3 stops
BOS11:51 amBoston Logan Intl
$2,261
Air Canada
Sep 11
BOS10:50 amBoston Logan Intl
34h 20m
3 stops
CNS11:10 amCairns
Sep 18
CNS7:15 pmCairns
41h 25m
3 stops
BOS10:40 pmBoston Logan Intl
$2,491

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 August 2, 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

Tue 9/15

4:35 pm-12:55 pm

2 stops30h 20m

Cairns

Tue 9/22

6:50 am-9:27 pm

2 stops28h 37m

$1,419

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 9/13

4:35 pm-12:55 pm

2 stops30h 20m

Cairns

Sun 9/20

3:45 pm-8:13 am

2 stops30h 28m

$1,441
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

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Thu 9/17

4:55 pm-3:15 pm

2 stops36h 20m

$1,534

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Thu 9/17

7:30 am-3:15 pm

2 stops45h 45m

$1,539

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Thu 9/17

7:30 am-3:15 pm

2 stops45h 45m

$1,540

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 9/13

9:20 am-11:10 am

2 stops35h 50m

Cairns

Sun 9/20

6:00 am-9:02 pm

2 stops29h 02m

$1,543

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 9/15

12:30 pm-1:40 pm

3 stops35h 10m

Cairns

Tue 9/22

4:35 pm-9:55 am

3 stops55h 20m

$1,548

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Thu 9/17

4:55 pm-3:15 pm

2 stops36h 20m

$1,556

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 9/11

6:30 am-10:35 am

2 stops38h 05m

Cairns

Fri 9/18

3:45 pm-11:28 pm

3 stops45h 43m

$1,830

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 airline that flies from Boston Logan Intl to Cairns?

American Airlines, Qantas Airways, and United 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

28h 42m

Direct flights

None
The fastest flight from Boston to Cairns takes 28h 42m
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. 28h 42m 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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