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Cheap flights from Boston to Cairns from $696

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.
Multiple Airlines Logo
10:00 pm - 11:20 pmBOS  Boston Logan Intl-CNS Cairns
35h 20m2 stops Doha Hamad Intl Brisbane
Multiple Airlines Logo
7:30 am - 3:15 pmCNS  Cairns-BOS Boston Logan Intl
45h 45m2 stops Adelaide Doha Hamad Intl
$1,540Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:00 pm - 11:20 pmBOS  Boston Logan Intl-CNS Cairns
35h 20m2 stops Doha Hamad Intl Brisbane
Multiple Airlines Logo
6:00 am - 3:15 pmCNS  Cairns-BOS Boston Logan Intl
47h 15m2 stops Brisbane Doha Hamad Intl
$1,585Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
4:59 pm - 1:40 pmBOS  Boston Logan Intl-CNS Cairns
30h 41m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
6:50 am - 9:27 pmCNS  Cairns-BOS Boston Logan Intl
28h 37m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$1,602Qantas Airways
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
4:59 pm - 6:25 pmBOS  Boston Logan Intl-CNS Cairns
35h 26m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Multiple Airlines Logo
7:10 pm - 7:52 pmCNS  Cairns-BOS Boston Logan Intl
38h 42m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$1,652Multiple Airlines
Wed, Sep 2 - Tue, Sep 8
Multiple Airlines Logo
10:40 am - 4:30 amBOS  Boston Logan Intl-CNS Cairns
27h 50m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
7:10 pm - 11:51 amCNS  Cairns-BOS Boston Logan Intl
54h 41m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$1,665Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:40 am - 4:30 amBOS  Boston Logan Intl-CNS Cairns
27h 50m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
7:10 pm - 11:51 amCNS  Cairns-BOS Boston Logan Intl
54h 41m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$1,666Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
4:59 pm - 1:40 pmBOS  Boston Logan Intl-CNS Cairns
30h 41m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Multiple Airlines Logo
7:10 pm - 10:29 pmCNS  Cairns-BOS Boston Logan Intl
41h 19m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$1,675Multiple Airlines
Wed, Sep 2 - Tue, Sep 8
Multiple Airlines Logo
6:50 pm - 4:30 amBOS  Boston Logan Intl-CNS Cairns
43h 40m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
7:15 pm - 11:51 amCNS  Cairns-BOS Boston Logan Intl
54h 36m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$1,690Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:40 am - 4:30 amBOS  Boston Logan Intl-CNS Cairns
27h 50m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
6:00 am - 9:26 pmCNS  Cairns-BOS Boston Logan Intl
29h 26m3 stops Brisbane Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,972Multiple Airlines
Wed, Sep 2 - Tue, Sep 8
Air Canada Logo
3:35 pm - 11:10 amBOS  Boston Logan Intl-CNS Cairns
29h 35m3 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl Brisbane
Air Canada Logo
6:00 am - 9:26 pmCNS  Cairns-BOS Boston Logan Intl
29h 26m3 stops Brisbane Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$2,277Air Canada
Wed, Sep 2 - Tue, Sep 8

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Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Sep 7
BOS4:59 pmBoston Logan Intl
30h 41m
2 stops
CNS1:40 pmCairns
Sep 17
CNS6:50 amCairns
28h 37m
2 stops
BOS9:27 pmBoston Logan Intl
$1,602
Qantas Airways
Aug 13
BOS2:32 pmBoston Logan Intl
33h 08m
2 stops
CNS1:40 pmCairns
Aug 18
CNS6:50 amCairns
54h 54m
2 stops
BOS11:44 pmBoston Logan Intl
$2,048
Qantas Airways
Sep 2
BOS10:30 amBoston Logan Intl
34h 05m
2 stops
CNS10:35 amCairns
Sep 8
CNS1:55 pmCairns
47h 33m
3 stops
BOS11:28 pmBoston Logan Intl
$2,593

Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
Sep 2
BOS3:35 pmBoston Logan Intl
29h 35m
3 stops
CNS11:10 amCairns
Sep 8
CNS6:00 amCairns
29h 26m
3 stops
BOS9:26 pmBoston Logan Intl
$2,277
Air Canada
Sep 7
BOS10:50 amBoston Logan Intl
39h 05m
3 stops
CNS3:55 pmCairns
Sep 17
CNS7:15 pmCairns
41h 25m
3 stops
BOS10:40 pmBoston Logan Intl
$2,400

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 August 7, 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 Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Thu 9/17

7:30 am-3:15 pm

2 stops45h 45m

$1,540

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Thu 9/17

6:00 am-3:15 pm

2 stops47h 15m

$1,585

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/7

4:59 pm-1:40 pm

2 stops30h 41m

Cairns

Thu 9/17

6:50 am-9:27 pm

2 stops28h 37m

$1,602

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 9/2

4:59 pm-6:25 pm

2 stops35h 26m

Cairns

Tue 9/8

7:10 pm-7:52 pm

2 stops38h 42m

$1,652

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/7

10:40 am-4:30 am

2 stops27h 50m

Cairns

Thu 9/17

7:10 pm-11:51 am

3 stops54h 41m

$1,665

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/7

10:40 am-4:30 am

2 stops27h 50m

Cairns

Thu 9/17

7:10 pm-11:51 am

3 stops54h 41m

$1,666

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 9/2

4:59 pm-1:40 pm

2 stops30h 41m

Cairns

Tue 9/8

7:10 pm-10:29 pm

2 stops41h 19m

$1,675

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 9/7

6:50 pm-4:30 am

2 stops43h 40m

Cairns

Thu 9/17

7:15 pm-11:51 am

3 stops54h 36m

$1,690
Quickest round-trip

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 9/2

10:40 am-4:30 am

2 stops27h 50m

Cairns

Tue 9/8

6:00 am-9:26 pm

3 stops29h 26m

$1,972

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 9/2

3:35 pm-11:10 am

3 stops29h 35m

Cairns

Tue 9/8

6:00 am-9:26 pm

3 stops29h 26m

$2,277

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, United 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

27h 50m

Direct flights

None
The fastest flight from Boston to Cairns takes 27h 50m
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. 27h 50m 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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