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Cheap flights from Boston to Cairns from $617

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 9/3. 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
10:30 am - 11:55 am
BOS
-
CNS
35h 25m
2 stops
American Airlines Logo
9:25 am - 9:18 pm
CNS
-
BOS
26h 53m
2 stops
$1,406American Airlines
Tue, Oct 13 - Mon, Nov 2
Multiple Airlines Logo
6:13 pm - 1:40 pm
BOS
-
CNS
29h 27m
2 stops
Multiple Airlines Logo
7:10 pm - 5:07 pm
CNS
-
BOS
35h 57m
2 stops
$1,594Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
6:30 am - 3:00 pm
BOS
-
CNS
42h 30m
2 stops
Multiple Airlines Logo
9:40 pm - 11:28 pm
CNS
-
BOS
39h 48m
2 stops
$1,639Multiple Airlines
Wed, Sep 9 - Tue, Sep 15
Qantas Airways Logo
7:00 am - 10:35 am
BOS
-
CNS
37h 35m
2 stops
Qantas Airways Logo
6:50 am - 7:52 pm
CNS
-
BOS
27h 02m
2 stops
$1,650Qantas Airways
Mon, Sep 7 - Thu, Sep 17
Qantas Airways Logo
4:59 pm - 12:55 pm
BOS
-
CNS
29h 56m
2 stops
Qantas Airways Logo
6:50 am - 9:27 pm
CNS
-
BOS
28h 37m
2 stops
$1,658Qantas Airways
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:30 am - 11:15 am
BOS
-
CNS
34h 45m
2 stops
Multiple Airlines Logo
7:10 pm - 9:27 pm
CNS
-
BOS
40h 17m
2 stops
$1,661Multiple Airlines
Tue, Sep 15 - Mon, Sep 21
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
$1,736Multiple 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
$1,737Multiple 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
$1,738Multiple Airlines
Mon, Sep 7 - Thu, Sep 17
Multiple Airlines Logo
10:30 am - 3:00 pm
BOS
-
CNS
38h 30m
2 stops
Multiple Airlines Logo
9:40 pm - 11:28 pm
CNS
-
BOS
39h 48m
2 stops
$1,739Multiple Airlines
Sat, Sep 12 - Fri, Sep 18

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American Airlines flights from Boston to Cairns

Our best American Airlines deals on Boston to Cairns flight tickets
American Airlines
Oct 13
BOS10:30 amBoston Logan Intl
35h 25m
2 stops
CNS11:55 amCairns
Nov 2
CNS9:25 amCairns
26h 53m
2 stops
BOS9:18 pmBoston Logan Intl
$1,406
American Airlines
Oct 13
BOS10:30 amBoston Logan Intl
35h 25m
2 stops
CNS11:55 amCairns
Nov 2
CNS6:00 amCairns
26h 19m
3 stops
BOS5:19 pmBoston Logan Intl
$1,935

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
Sep 7
BOS7:00 amBoston Logan Intl
37h 35m
2 stops
CNS10:35 amCairns
Sep 17
CNS6:50 amCairns
27h 02m
2 stops
BOS7:52 pmBoston Logan Intl
$1,650
Qantas Airways
Sep 7
BOS4:59 pmBoston Logan Intl
29h 56m
2 stops
CNS12:55 pmCairns
Sep 17
CNS6:50 amCairns
28h 37m
2 stops
BOS9:27 pmBoston Logan Intl
$1,658

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 23, 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

Tue 10/13

10:30 am-11:55 am

2 stops35h 25m

Cairns

Mon 11/2

9:25 am-9:18 pm

2 stops26h 53m

$1,406

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

6:13 pm-1:40 pm

2 stops29h 27m

Cairns

Thu 9/17

7:10 pm-5:07 pm

2 stops35h 57m

$1,594

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 9/9

6:30 am-3:00 pm

2 stops42h 30m

Cairns

Tue 9/15

9:40 pm-11:28 pm

2 stops39h 48m

$1,639

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

7:00 am-10:35 am

2 stops37h 35m

Cairns

Thu 9/17

6:50 am-7:52 pm

2 stops27h 02m

$1,650
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

6:50 am-9:27 pm

2 stops28h 37m

$1,658

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 9/15

10:30 am-11:15 am

2 stops34h 45m

Cairns

Mon 9/21

7:10 pm-9:27 pm

2 stops40h 17m

$1,661

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

$1,736

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

$1,737

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

$1,738

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 9/12

10:30 am-3:00 pm

2 stops38h 30m

Cairns

Fri 9/18

9:40 pm-11:28 pm

2 stops39h 48m

$1,739

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 American 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

27h 05m

Direct flights

None
The fastest flight from Boston to Cairns takes 27h 05m
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 05m 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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