Cheap flights from Boston to Cairns from $684

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 1/24. 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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Fiji Airways Logo
4:19 pm - 11:35 amBOS-CNS
28h 16m2 stops
Fiji Airways Logo
12:35 pm - 11:30 pmCNS-BOS
25h 55m2 stops
$1,149Fiji Airways
Find Deal
Thu, Jan 22 - Sat, Jan 31
Fiji Airways Logo
4:19 pm - 11:35 amBOS-CNS
28h 16m2 stops
Fiji Airways Logo
12:35 pm - 11:30 pmCNS-BOS
25h 55m2 stops
$1,387Fiji Airways
Find Deal
Thu, Jan 15 - Sat, Jan 24
Multiple Airlines Logo
12:12 pm - 10:45 amBOS-CNS
31h 33m2 stops
Multiple Airlines Logo
3:35 pm - 9:29 amCNS-BOS
32h 54m3 stops
$1,850Multiple Airlines
Find Deal
Thu, Jan 22 - Sat, Jan 31
Cathay Pacific Logo
12:30 am - 9:55 amBOS-CNS
42h 25m1 stop
Cathay Pacific Logo
11:25 am - 12:16 amCNS-BOS
51h 51m2 stops
$1,855Cathay Pacific
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Wed, Jan 14 - Sat, Jan 24
Cathay Pacific Logo
12:30 am - 9:55 amBOS-CNS
42h 25m1 stop
Cathay Pacific Logo
11:25 am - 12:16 amCNS-BOS
51h 51m2 stops
$1,867Cathay Pacific
Find Deal
Wed, Jan 21 - Sat, Jan 31
Emirates Logo
10:10 pm - 10:35 pmBOS-CNS
57h 25m2 stops
Emirates Logo
11:35 am - 1:55 pmCNS-BOS
65h 20m2 stops
$1,964Emirates
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Sun, Feb 8 - Thu, Feb 12
Emirates Logo
10:10 pm - 10:35 pmBOS-CNS
57h 25m2 stops
Emirates Logo
11:35 am - 1:55 pmCNS-BOS
65h 20m2 stops
$1,965Emirates
Find Deal
Sun, Feb 8 - Thu, Feb 12
Qantas Airways Logo
5:25 pm - 4:15 pmBOS-CNS
31h 50m2 stops
Qantas Airways Logo
6:00 am - 6:59 pmCNS-BOS
27h 59m3 stops
$2,045Qantas Airways
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Thu, Jan 15 - Sat, Jan 24
Multiple Airlines Logo
8:45 pm - 8:30 amBOS-CNS
68h 45m3 stops
Multiple Airlines Logo
6:30 pm - 2:20 pmCNS-BOS
58h 50m2 stops
$2,195Multiple Airlines
Find Deal
Sat, Nov 15 - Sat, Nov 29
Qantas Airways Logo
5:45 pm - 11:00 amBOS-CNS
50h 15m2 stops
Qantas Airways Logo
9:20 am - 5:16 pmCNS-BOS
46h 56m2 stops
$3,469Qantas Airways
Find Deal
Sat, Nov 15 - Sat, Nov 29

Fiji Airways flights from Boston to Cairns

Our best Fiji Airways deals on Boston to Cairns flight tickets
Fiji Airways
Jan 22
BOS4:19 pmBoston Logan Intl
28h 16m
2 stops
CNS11:35 amCairns
Jan 31
CNS12:35 pmCairns
25h 55m
2 stops
BOS11:30 pmBoston Logan Intl
Fiji Airways
Jan 15
BOS4:19 pmBoston Logan Intl
28h 16m
2 stops
CNS11:35 amCairns
Jan 24
CNS12:35 pmCairns
25h 55m
2 stops
BOS11:30 pmBoston Logan Intl
Fiji Airways
Nov 15
BOS4:01 pmBoston Logan Intl
28h 34m
2 stops
CNS11:35 amCairns
Nov 29
CNS12:35 pmCairns
24h 01m
2 stops
BOS9:36 pmBoston Logan Intl

Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
Nov 15
BOS10:15 amBoston Logan Intl
36h 45m
3 stops
CNS2:00 pmCairns
Nov 29
CNS6:00 amCairns
27h 02m
3 stops
BOS6:02 pmBoston Logan Intl
Air Canada
Nov 11
BOS6:15 amBoston Logan Intl
41h 40m
3 stops
CNS2:55 pmCairns
Nov 16
CNS5:35 pmCairns
55h 22m
3 stops
BOS9:57 amBoston Logan Intl

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 October 9, 2025.
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

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 1/22

4:19 pm-11:35 am

2 stops28h 16m

Cairns

Sat 1/31

12:35 pm-11:30 pm

2 stops25h 55m

$1,149

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 1/15

4:19 pm-11:35 am

2 stops28h 16m

Cairns

Sat 1/24

12:35 pm-11:30 pm

2 stops25h 55m

$1,387

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 1/22

12:12 pm-10:45 am

2 stops31h 33m

Cairns

Sat 1/31

3:35 pm-9:29 am

3 stops32h 54m

$1,850

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 1/14

12:30 am-9:55 am

1 stop42h 25m

Cairns

Sat 1/24

11:25 am-12:16 am

2 stops51h 51m

$1,855

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 1/21

12:30 am-9:55 am

1 stop42h 25m

Cairns

Sat 1/31

11:25 am-12:16 am

2 stops51h 51m

$1,867

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

10:10 pm-10:35 pm

2 stops57h 25m

Cairns

Thu 2/12

11:35 am-1:55 pm

2 stops65h 20m

$1,964

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 2/8

10:10 pm-10:35 pm

2 stops57h 25m

Cairns

Thu 2/12

11:35 am-1:55 pm

2 stops65h 20m

$1,965

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 1/15

5:25 pm-4:15 pm

2 stops31h 50m

Cairns

Sat 1/24

6:00 am-6:59 pm

3 stops27h 59m

$2,045

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 11/15

8:45 pm-8:30 am

3 stops68h 45m

Cairns

Sat 11/29

6:30 pm-2:20 pm

2 stops58h 50m

$2,195

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 11/15

5:45 pm-11:00 am

2 stops50h 15m

Cairns

Sat 11/29

9:20 am-5:16 pm

2 stops46h 56m

$3,469

Flights are sorted by cheapest round-trip flights 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 day to depart on your flight to Cairns?

Our data shows that Wednesday is the least expensive day to fly to Cairns. Tickets to fly out on this day can be as low as $1,714. The most expensive day to fly to Cairns is Tuesday, with ticket prices averaging around $1,843.

What is the cheapest time of day to depart on your flight to Cairns?

Our data shows that the cheapest Boston to Cairns flights are usually those with departure times in the afternoon. Our users have found flights to Cairns in the afternoon for as low as $1,822. At noon is when there is more demand to fly to Cairns, so prices are often more expensive at around $2,361 per ticket.

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

Direct flights

None
There are no direct flights from Boston to Cairns. There are no popular flight routes 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. 25h 30m 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.

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1 adult
Sat 11/8
Sat 11/15

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