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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.
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
$1,392American Airlines
Mon, Sep 7 - Thu, Sep 17
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
$1,403Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
3:31 pm - 11:05 am
BOS
-
CNS
28h 34m
2 stops
American Airlines Logo
6:00 am - 9:55 pm
CNS
-
BOS
30h 55m
2 stops
$1,410American Airlines
Wed, Nov 11 - Tue, Feb 2
Qantas Airways Logo
2:32 pm - 1:45 pm
BOS
-
CNS
33h 13m
2 stops
Qantas Airways Logo
6:50 am - 10:06 pm
CNS
-
BOS
29h 16m
2 stops
$1,426Qantas Airways
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
4:59 pm - 12:55 pm
BOS
-
CNS
29h 56m
2 stops
Multiple Airlines Logo
6:50 am - 7:42 pm
CNS
-
BOS
26h 52m
2 stops
$1,463Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
1:51 pm - 2:00 pm
BOS
-
CNS
33h 09m
2 stops
Multiple Airlines Logo
6:00 am - 11:54 pm
CNS
-
BOS
32h 54m
3 stops
$1,488Multiple Airlines
Wed, Nov 11 - Tue, Feb 2
United Airlines Logo
9:45 am - 2:00 pm
BOS
-
CNS
37h 15m
2 stops
United Airlines Logo
6:00 am - 1:05 am
CNS
-
BOS
34h 05m
2 stops
$1,493United Airlines
Mon, Nov 9 - Tue, Feb 2
United Airlines Logo
8:45 am - 7:05 pm
BOS
-
CNS
43h 20m
2 stops
United Airlines Logo
6:00 am - 5:07 pm
CNS
-
BOS
26h 07m
2 stops
$1,496United Airlines
Tue, Nov 10 - Wed, Feb 3
United Airlines Logo
5:45 am - 2:55 pm
BOS
-
CNS
42h 10m
3 stops
United Airlines Logo
6:00 am - 11:54 pm
CNS
-
BOS
32h 54m
3 stops
$1,497United Airlines
Mon, Nov 9 - Tue, Feb 2
American Airlines Logo
10:30 am - 10:35 am
BOS
-
CNS
34h 05m
2 stops
American Airlines Logo
1:55 pm - 8:13 am
CNS
-
BOS
32h 18m
2 stops
$1,499American Airlines
Thu, Sep 3 - Thu, Sep 10

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United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
Nov 9
BOS9:45 amBoston Logan Intl
37h 15m
2 stops
CNS2:00 pmCairns
Feb 2
CNS6:00 amCairns
34h 05m
2 stops
BOS1:05 amBoston Logan Intl
$1,493
United Airlines
Nov 10
BOS8:45 amBoston Logan Intl
43h 20m
2 stops
CNS7:05 pmCairns
Feb 3
CNS6:00 amCairns
26h 07m
2 stops
BOS5:07 pmBoston Logan Intl
$1,496
United Airlines
Nov 9
BOS5:45 amBoston Logan Intl
42h 10m
3 stops
CNS2:55 pmCairns
Feb 2
CNS6:00 amCairns
32h 54m
3 stops
BOS11:54 pmBoston Logan Intl
$1,497

Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
Nov 11
BOS5:45 amBoston Logan Intl
42h 10m
3 stops
CNS2:55 pmCairns
Jan 30
CNS3:45 pmCairns
61h 33m
3 stops
BOS2:18 pmBoston Logan Intl
$1,753
Air Canada
Nov 12
BOS11:10 amBoston Logan Intl
36h 45m
3 stops
CNS2:55 pmCairns
Jan 30
CNS3:45 pmCairns
61h 33m
3 stops
BOS2:18 pmBoston Logan Intl
$1,803

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 22, 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

Mon 9/7

4:59 pm-12:55 pm

2 stops29h 56m

Cairns

Thu 9/17

1:55 pm-8:13 am

2 stops32h 18m

$1,392

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 9/2

10:30 am-12:55 pm

2 stops36h 25m

Cairns

Wed 9/9

6:45 am-7:52 pm

2 stops27h 07m

$1,403

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 11/11

3:31 pm-11:05 am

2 stops28h 34m

Cairns

Tue 2/2

6:00 am-9:55 pm

2 stops30h 55m

$1,410

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-10:06 pm

2 stops29h 16m

$1,426
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 8/11

4:59 pm-12:55 pm

2 stops29h 56m

Cairns

Tue 8/18

6:50 am-7:42 pm

2 stops26h 52m

$1,463

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 11/11

1:51 pm-2:00 pm

2 stops33h 09m

Cairns

Tue 2/2

6:00 am-11:54 pm

3 stops32h 54m

$1,488

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 11/9

9:45 am-2:00 pm

2 stops37h 15m

Cairns

Tue 2/2

6:00 am-1:05 am

2 stops34h 05m

$1,493

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 11/10

8:45 am-7:05 pm

2 stops43h 20m

Cairns

Wed 2/3

6:00 am-5:07 pm

2 stops26h 07m

$1,496

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 11/9

5:45 am-2:55 pm

3 stops42h 10m

Cairns

Tue 2/2

6:00 am-11:54 pm

3 stops32h 54m

$1,497

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 9/3

10:30 am-10:35 am

2 stops34h 05m

Cairns

Thu 9/10

1:55 pm-8:13 am

2 stops32h 18m

$1,499

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?

American Airlines, United Airlines, and Qantas Airways 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

29h 56m

Direct flights

None
The fastest flight from Boston to Cairns takes 29h 56m
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. 29h 56m 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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