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Cheap flights from Boston to Cairns from $656

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 7/23. 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
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
$1,454American Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:00 pm - 10:40 pm
BOS
-
CNS
34h 40m
2 stops
Multiple Airlines Logo
3:45 pm - 2:55 pm
CNS
-
BOS
37h 10m
2 stops
$1,876Multiple Airlines
Wed, Jul 22 - Thu, Oct 29
Multiple Airlines Logo
7:28 am - 11:10 am
BOS
-
CNS
37h 42m
2 stops
Multiple Airlines Logo
11:55 pm - 11:40 pm
CNS
-
BOS
37h 45m
3 stops
$1,878Multiple Airlines
Wed, Jul 22 - Thu, Oct 29
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
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
$2,041Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
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
$2,257Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Air Canada Logo
6:00 am - 3:55 pm
BOS
-
CNS
43h 55m
3 stops
Air Canada Logo
7:15 pm - 10:40 pm
CNS
-
BOS
41h 25m
3 stops
$2,259Air Canada
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
1:15 pm - 4:30 am
BOS
-
CNS
25h 15m
1 stop
Multiple Airlines Logo
6:40 am - 3:10 pm
CNS
-
BOS
46h 30m
2 stops
$2,605Multiple Airlines
Wed, Jul 22 - Thu, Oct 29
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
$2,792Multiple Airlines
Mon, Sep 7 - Thu, Sep 17

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Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
Sep 7
BOS6:00 amBoston Logan Intl
43h 55m
3 stops
CNS3:55 pmCairns
Sep 17
CNS7:15 pmCairns
41h 25m
3 stops
BOS10:40 pmBoston Logan Intl
$2,259
Air Canada
Jul 22
BOS3:35 pmBoston Logan Intl
29h 35m
3 stops
CNS11:10 amCairns
Oct 29
CNS6:00 amCairns
29h 28m
3 stops
BOS9:28 pmBoston Logan Intl
$3,052

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 June 30, 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
Quickest 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

4:59 pm-12:55 pm

2 stops29h 56m

Cairns

Thu 9/17

1:55 pm-8:13 am

2 stops32h 18m

$1,454

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 7/22

10:00 pm-10:40 pm

2 stops34h 40m

Cairns

Thu 10/29

3:45 pm-2:55 pm

2 stops37h 10m

$1,876

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 7/22

7:28 am-11:10 am

2 stops37h 42m

Cairns

Thu 10/29

11:55 pm-11:40 pm

3 stops37h 45m

$1,878

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

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

$2,041

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

$2,257

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

6:00 am-3:55 pm

3 stops43h 55m

Cairns

Thu 9/17

7:15 pm-10:40 pm

3 stops41h 25m

$2,259

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 7/22

1:15 pm-4:30 am

1 stop25h 15m

Cairns

Thu 10/29

6:40 am-3:10 pm

2 stops46h 30m

$2,605

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

$2,792

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?

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

39h 10m

Direct flights

None
The fastest flight from Boston to Cairns takes 39h 10m
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. 39h 10m 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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