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Cheap flights from Boston to Cairns from $713

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 8/30. 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
$1,453American Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
6:13 pm - 1:40 pm
BOS
-
CNS
29h 27m
2 stops
Multiple Airlines Logo
7:10 pm - 5:07 pm
CNS
-
BOS
35h 57m
2 stops
$1,543Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
4:59 pm - 12:55 pm
BOS
-
CNS
29h 56m
2 stops
Qantas Airways Logo
12:35 pm - 11:28 pm
CNS
-
BOS
48h 53m
2 stops
$1,546Qantas Airways
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
6:13 pm - 1:40 pm
BOS
-
CNS
29h 27m
2 stops
Multiple Airlines Logo
7:15 pm - 5:07 pm
CNS
-
BOS
35h 52m
2 stops
$1,593Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:40 am - 4:30 am
BOS
-
CNS
27h 50m
2 stops
Multiple Airlines Logo
7:10 pm - 11:55 am
CNS
-
BOS
54h 45m
3 stops
$1,663Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:40 am - 4:30 am
BOS
-
CNS
27h 50m
2 stops
Multiple Airlines Logo
7:10 pm - 11:55 am
CNS
-
BOS
54h 45m
3 stops
$1,664Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:40 am - 4:30 am
BOS
-
CNS
27h 50m
2 stops
Multiple Airlines Logo
7:10 pm - 11:55 am
CNS
-
BOS
54h 45m
3 stops
$1,671Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
United Airlines Logo
6:13 pm - 11:10 am
BOS
-
CNS
26h 57m
2 stops
United Airlines Logo
6:00 am - 9:02 pm
CNS
-
BOS
29h 02m
2 stops
$1,831United Airlines
Fri, Aug 14 - Fri, Aug 21
United Airlines Logo
5:45 am - 3:55 pm
BOS
-
CNS
44h 10m
3 stops
United Airlines Logo
6:00 am - 11:59 pm
CNS
-
BOS
31h 59m
3 stops
$1,836United Airlines
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
10:40 am - 4:30 am
BOS
-
CNS
27h 50m
2 stops
Multiple Airlines Logo
7:10 pm - 11:55 am
CNS
-
BOS
54h 45m
3 stops
$2,039Multiple Airlines
Mon, Sep 7 - Thu, Sep 17

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United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
Aug 14
BOS6:13 pmBoston Logan Intl
26h 57m
2 stops
CNS11:10 amCairns
Aug 21
CNS6:00 amCairns
29h 02m
2 stops
BOS9:02 pmBoston Logan Intl
$1,831
United Airlines
Aug 14
BOS5:45 amBoston Logan Intl
44h 10m
3 stops
CNS3:55 pmCairns
Aug 21
CNS6:00 amCairns
31h 59m
3 stops
BOS11:59 pmBoston Logan Intl
$1,836

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 4, 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

$1,453

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

6:13 pm-1:40 pm

2 stops29h 27m

Cairns

Thu 9/17

7:10 pm-5:07 pm

2 stops35h 57m

$1,543

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

4:59 pm-12:55 pm

2 stops29h 56m

Cairns

Thu 9/17

12:35 pm-11:28 pm

2 stops48h 53m

$1,546

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

6:13 pm-1:40 pm

2 stops29h 27m

Cairns

Thu 9/17

7:15 pm-5:07 pm

2 stops35h 52m

$1,593

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:40 am-4:30 am

2 stops27h 50m

Cairns

Thu 9/17

7:10 pm-11:55 am

3 stops54h 45m

$1,663

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:40 am-4:30 am

2 stops27h 50m

Cairns

Thu 9/17

7:10 pm-11:55 am

3 stops54h 45m

$1,664

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:40 am-4:30 am

2 stops27h 50m

Cairns

Thu 9/17

7:10 pm-11:55 am

3 stops54h 45m

$1,671
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 8/14

6:13 pm-11:10 am

2 stops26h 57m

Cairns

Fri 8/21

6:00 am-9:02 pm

2 stops29h 02m

$1,831

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 8/14

5:45 am-3:55 pm

3 stops44h 10m

Cairns

Fri 8/21

6:00 am-11:59 pm

3 stops31h 59m

$1,836

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:40 am-4:30 am

2 stops27h 50m

Cairns

Thu 9/17

7:10 pm-11:55 am

3 stops54h 45m

$2,039

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 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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