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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
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
$1,623Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
5:45 am - 4:30 am
BOS
-
CNS
32h 45m
2 stops
Multiple Airlines Logo
7:10 pm - 9:55 am
CNS
-
BOS
52h 45m
3 stops
$1,773Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
4:29 pm - 5:35 pm
BOS
-
CNS
35h 06m
2 stops
Qantas Airways Logo
3:45 pm - 8:35 am
CNS
-
BOS
30h 50m
2 stops
$1,911Qantas Airways
Sun, Jun 28 - Tue, Jul 28
United Airlines Logo
9:07 am - 11:10 am
BOS
-
CNS
36h 03m
2 stops
United Airlines Logo
6:00 am - 6:59 pm
CNS
-
BOS
26h 59m
2 stops
$1,936United Airlines
Sun, Jun 28 - Tue, Jul 28
Multiple Airlines Logo
5:45 am - 4:30 am
BOS
-
CNS
32h 45m
2 stops
Multiple Airlines Logo
7:10 pm - 11:55 am
CNS
-
BOS
54h 45m
3 stops
$2,077Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
11:53 am - 1:40 pm
BOS
-
CNS
35h 47m
3 stops
Qantas Airways Logo
6:50 am - 8:55 pm
CNS
-
BOS
28h 05m
2 stops
$2,082Qantas Airways
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
7:00 am - 5:35 pm
BOS
-
CNS
44h 35m
2 stops
Multiple Airlines Logo
6:45 am - 8:51 pm
CNS
-
BOS
28h 06m
2 stops
$2,180Multiple Airlines
Thu, Jul 9 - Thu, Jul 16
Multiple Airlines Logo
12:01 pm - 6:25 pm
BOS
-
CNS
40h 24m
3 stops
Multiple Airlines Logo
1:15 pm - 6:40 pm
CNS
-
BOS
43h 25m
2 stops
$2,182Multiple Airlines
Sun, Jun 28 - Tue, Jul 28
Air Canada Logo
7:15 pm - 3:55 pm
BOS
-
CNS
54h 40m
3 stops
Air Canada Logo
7:15 pm - 9:55 am
CNS
-
BOS
52h 40m
3 stops
$2,234Air Canada
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
Jun 28
BOS4:29 pmBoston Logan Intl
35h 06m
2 stops
CNS5:35 pmCairns
Jul 28
CNS3:45 pmCairns
30h 50m
2 stops
BOS8:35 amBoston Logan Intl
$1,911
Qantas Airways
Sep 7
BOS11:53 amBoston Logan Intl
35h 47m
3 stops
CNS1:40 pmCairns
Sep 17
CNS6:50 amCairns
28h 05m
2 stops
BOS8:55 pmBoston Logan Intl
$2,082
Qantas Airways
Jul 9
BOS12:25 pmBoston Logan Intl
39h 10m
3 stops
CNS5:35 pmCairns
Jul 16
CNS6:50 amCairns
28h 01m
2 stops
BOS8:51 pmBoston Logan Intl
$2,505

Emirates flights from Boston to Cairns

Our best Emirates deals on Boston to Cairns flight tickets
Emirates
Jul 10
BOS11:05 pmBoston Logan Intl
57h 40m
2 stops
CNS10:45 pmCairns
Jul 26
CNS6:55 pmCairns
57h 15m
2 stops
BOS2:10 pmBoston Logan Intl
$2,688
Emirates
Jul 6
BOS11:05 pmBoston Logan Intl
46h 45m
2 stops
CNS11:50 amCairns
Jul 13
CNS6:00 amCairns
46h 10m
2 stops
BOS2:10 pmBoston Logan Intl
$2,937
Emirates
Jul 9
BOS11:05 pmBoston Logan Intl
54h 25m
2 stops
CNS7:30 pmCairns
Jul 16
CNS1:55 pmCairns
38h 15m
2 stops
BOS2:10 pmBoston Logan Intl
$3,217

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 May 27, 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

10:30 am-3:15 pm

2 stops42h 45m

$1,623

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

5:45 am-4:30 am

2 stops32h 45m

Cairns

Thu 9/17

7:10 pm-9:55 am

3 stops52h 45m

$1,773

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 6/28

4:29 pm-5:35 pm

2 stops35h 06m

Cairns

Tue 7/28

3:45 pm-8:35 am

2 stops30h 50m

$1,911
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 6/28

9:07 am-11:10 am

2 stops36h 03m

Cairns

Tue 7/28

6:00 am-6:59 pm

2 stops26h 59m

$1,936

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

5:45 am-4:30 am

2 stops32h 45m

Cairns

Thu 9/17

7:10 pm-11:55 am

3 stops54h 45m

$2,077

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

11:53 am-1:40 pm

3 stops35h 47m

Cairns

Thu 9/17

6:50 am-8:55 pm

2 stops28h 05m

$2,082

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/9

7:00 am-5:35 pm

2 stops44h 35m

Cairns

Thu 7/16

6:45 am-8:51 pm

2 stops28h 06m

$2,180

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 6/28

12:01 pm-6:25 pm

3 stops40h 24m

Cairns

Tue 7/28

1:15 pm-6:40 pm

2 stops43h 25m

$2,182

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

7:15 pm-3:55 pm

3 stops54h 40m

Cairns

Thu 9/17

7:15 pm-9:55 am

3 stops52h 40m

$2,234

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?

United Airlines and Fiji 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

33h 35m

Direct flights

None
The fastest flight from Boston to Cairns takes 33h 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. 33h 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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