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Cheap flights from Boston to Cairns from $851

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 7/19. 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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0 bags

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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
10:00 pm - 9:50 am
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
10:30 am - 3:15 pm
CNS
-
BOS
42h 45m
2 stops
$1,550Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Qatar Airways Logo
10:00 pm - 9:50 am
BOS
-
CNS
45h 50m
2 stops
Qatar Airways Logo
7:15 pm - 3:15 pm
CNS
-
BOS
58h 00m
2 stops
$1,557Qatar Airways
Mon, Sep 7 - Thu, Sep 17
American Airlines Logo
4:27 pm - 12:55 pm
BOS
-
CNS
30h 28m
2 stops
American Airlines Logo
1:55 pm - 8:13 am
CNS
-
BOS
32h 18m
2 stops
$1,610American Airlines
Mon, Sep 7 - Thu, Sep 17
United Airlines Logo
4:15 pm - 8:20 pm
BOS
-
CNS
38h 05m
2 stops
United Airlines Logo
6:00 am - 9:21 pm
CNS
-
BOS
29h 21m
2 stops
$1,675United Airlines
Wed, Jul 15 - Wed, Jul 22
Multiple Airlines Logo
3:00 pm - 10:35 am
BOS
-
CNS
29h 35m
2 stops
Multiple Airlines Logo
1:15 pm - 6:40 pm
CNS
-
BOS
43h 25m
2 stops
$1,764Multiple Airlines
Sun, Jun 28 - Tue, Jul 28
Multiple Airlines Logo
11:53 am - 6:25 pm
BOS
-
CNS
40h 32m
3 stops
Multiple Airlines Logo
6:45 am - 9:27 pm
CNS
-
BOS
28h 42m
2 stops
$1,886Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
11:53 am - 6:25 pm
BOS
-
CNS
40h 32m
3 stops
Multiple Airlines Logo
6:45 am - 9:27 pm
CNS
-
BOS
28h 42m
2 stops
$1,887Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
11:53 am - 6:25 pm
BOS
-
CNS
40h 32m
3 stops
Multiple Airlines Logo
6:45 am - 7:52 pm
CNS
-
BOS
27h 07m
2 stops
$1,888Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
6:21 am - 9:20 am
BOS
-
CNS
60h 59m
2 stops
Multiple Airlines Logo
9:00 pm - 9:21 pm
CNS
-
BOS
38h 21m
2 stops
$1,927Multiple Airlines
Thu, Jun 25 - Mon, Jun 29
Multiple Airlines Logo
4:27 pm - 12:55 pm
BOS
-
CNS
30h 28m
2 stops
Multiple Airlines Logo
3:45 pm - 9:39 am
CNS
-
BOS
31h 54m
3 stops
$1,943Multiple Airlines
Mon, Sep 7 - Thu, Sep 17

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Sep 7
BOS11:53 amBoston Logan Intl
35h 47m
3 stops
CNS1:40 pmCairns
Sep 17
CNS10:15 amCairns
51h 13m
3 stops
BOS11:28 pmBoston Logan Intl
$2,294
Qantas Airways
Sep 7
BOS11:53 amBoston Logan Intl
35h 47m
3 stops
CNS1:40 pmCairns
Sep 17
CNS10:15 amCairns
51h 13m
3 stops
BOS11:28 pmBoston Logan Intl
$2,296
Qantas Airways
Sep 7
BOS11:53 amBoston Logan Intl
35h 47m
3 stops
CNS1:40 pmCairns
Sep 17
CNS6:50 amCairns
72h 05m
3 stops
BOS4:55 pmBoston Logan Intl
$2,304

Japan Airlines flights from Boston to Cairns

Our best Japan Airlines deals on Boston to Cairns flight tickets
Japan Airlines
Jun 25
BOS1:15 pmBoston Logan Intl
25h 15m
1 stop
CNS4:30 amCairns
Jun 29
CNS11:40 amCairns
40h 40m
2 stops
BOS2:20 pmBoston Logan Intl
$10,579
Japan Airlines
Sep 7
BOS1:00 pmBoston Logan Intl
25h 30m
1 stop
CNS4:30 amCairns
Sep 17
CNS11:40 amCairns
40h 28m
2 stops
BOS2:08 pmBoston Logan Intl
$10,580

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 3, 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

10:00 pm-9:50 am

2 stops45h 50m

Cairns

Thu 9/17

10:30 am-3:15 pm

2 stops42h 45m

$1,550

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-9:50 am

2 stops45h 50m

Cairns

Thu 9/17

7:15 pm-3:15 pm

2 stops58h 00m

$1,557

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

4:27 pm-12:55 pm

2 stops30h 28m

Cairns

Thu 9/17

1:55 pm-8:13 am

2 stops32h 18m

$1,610

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 7/15

4:15 pm-8:20 pm

2 stops38h 05m

Cairns

Wed 7/22

6:00 am-9:21 pm

2 stops29h 21m

$1,675

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 6/28

3:00 pm-10:35 am

2 stops29h 35m

Cairns

Tue 7/28

1:15 pm-6:40 pm

2 stops43h 25m

$1,764

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

11:53 am-6:25 pm

3 stops40h 32m

Cairns

Thu 9/17

6:45 am-9:27 pm

2 stops28h 42m

$1,886

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

11:53 am-6:25 pm

3 stops40h 32m

Cairns

Thu 9/17

6:45 am-9:27 pm

2 stops28h 42m

$1,887

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

11:53 am-6:25 pm

3 stops40h 32m

Cairns

Thu 9/17

6:45 am-7:52 pm

2 stops27h 07m

$1,888

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 6/25

6:21 am-9:20 am

2 stops60h 59m

Cairns

Mon 6/29

9:00 pm-9:21 pm

2 stops38h 21m

$1,927
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

4:27 pm-12:55 pm

2 stops30h 28m

Cairns

Thu 9/17

3:45 pm-9:39 am

3 stops31h 54m

$1,943

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

29h 35m

Direct flights

None
The fastest flight from Boston to Cairns takes 29h 35m
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 35m 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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