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$1,407+ Cheap flights from Boston (BOS) to Cairns (CNS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Boston to Cairns

Cheapest flights from Boston to Cairns
Explore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Qantas Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:02 pm
BOS
-
CNS
2 stops31h 48m
Qantas Airways
Fri 5/2212:35 pm
CNS
-
BOS
2 stops47h 26m
Qantas Airways
Deal found 1/18$1,407
This oojo deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:02 pm
BOS
-
CNS
2 stops31h 48m
Qantas Airways
Mon 5/256:20 pm
CNS
-
BOS
2 stops36h 15m
Qantas Airways
Deal found 1/18$1,424
This Qantas Airways deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/42:36 pm
BOS
-
CNS
2 stops30h 14m
Multiple Airlines
Wed 3/113:35 pm
CNS
-
BOS
2 stops28h 56m
Multiple Airlines
Deal found 1/17$1,433
This Qantas Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/182:02 pm
BOS
-
CNS
2 stops31h 48m
Qantas Airways
Mon 5/256:20 pm
CNS
-
BOS
2 stops36h 15m
Qantas Airways
Deal found 1/18$1,466
This Qantas Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:02 pm
BOS
-
CNS
2 stops32h 53m
Qantas Airways
Fri 5/2212:35 pm
CNS
-
BOS
2 stops47h 26m
Qantas Airways
Deal found 1/18$1,474
This Air Canada deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:30 pm
BOS
-
CNS
3 stops35h 10m
Multiple Airlines
Mon 5/257:10 pm
CNS
-
BOS
3 stops52h 44m
Multiple Airlines
Deal found 1/18$1,508
This Qantas Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:02 pm
BOS
-
CNS
2 stops32h 53m
Qantas Airways
Mon 5/256:20 pm
CNS
-
BOS
2 stops40h 36m
Qantas Airways
Deal found 1/18$1,533
This KAYAK deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/13:00 pm
BOS
-
CNS
2 stops30h 40m
Multiple Airlines
Mon 8/1712:40 pm
CNS
-
BOS
2 stops30h 20m
Multiple Airlines
Deal found 1/18$1,539
This Qantas Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:48 pm
BOS
-
CNS
2 stops29h 07m
Qantas Airways
Fri 5/2212:35 pm
CNS
-
BOS
2 stops47h 26m
Qantas Airways
Deal found 1/18$1,565
This Gurufare deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:00 pm
BOS
-
CNS
2 stops45h 50m
Qatar Airways
Tue 5/264:55 pm
CNS
-
BOS
2 stops36h 10m
Qatar Airways
Deal found 1/18$1,578
This FlightHub deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/155:48 pm
BOS
-
CNS
2 stops52h 02m
Qantas Airways
Tue 5/2612:35 pm
CNS
-
BOS
2 stops47h 26m
Qantas Airways
Deal found 1/18$1,579

Find flight deals from Boston to Cairns

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Cairns (CNS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2026.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,407
(Qantas Airways)
Provider with most accurate pricing for Boston Logan Intl-Cairns flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Cairns flights.
Search Deals
From Boston Logan Intl to Cairns
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 20, 2026.
Use the filters below to find and compare flights from Boston to Cairns that are best for you.

Fly from

Boston

Fly to

Cairns

Route

Depart

Return

Price

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 5/18

2:02 pm-11:50 am

2 stops31h 48m

Cairns

Tue 5/26

12:35 pm-10:01 pm

2 stops47h 26m

$1,407

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 5/16

2:02 pm-11:50 am

2 stops31h 48m

Cairns

Fri 5/22

12:35 pm-10:01 pm

2 stops47h 26m

$1,407

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 3/4

2:36 pm-11:50 am

2 stops30h 14m

Cairns

Wed 3/11

3:35 pm-6:31 am

2 stops28h 56m

$1,433

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 5/13

2:02 pm-12:55 pm

2 stops32h 53m

Cairns

Tue 5/26

12:35 pm-10:01 pm

2 stops47h 26m

$1,474

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/19

5:48 pm-12:55 pm

2 stops29h 07m

Cairns

Mon 5/25

6:20 pm-4:35 pm

2 stops36h 15m

$1,533

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 5/13

2:02 pm-12:55 pm

2 stops32h 53m

Cairns

Mon 5/25

6:20 pm-8:56 pm

2 stops40h 36m

$1,533

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/19

5:48 pm-12:55 pm

2 stops29h 07m

Cairns

Fri 5/22

12:35 pm-10:01 pm

2 stops47h 26m

$1,565

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 5/14

10:00 pm-9:50 am

2 stops45h 50m

Cairns

Tue 5/26

4:55 pm-3:05 pm

2 stops36h 10m

$1,578

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 5/13

10:00 pm-11:20 pm

2 stops35h 20m

Cairns

Wed 5/27

4:55 pm-3:05 pm

2 stops60h 10m

$1,588

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 5/14

10:00 pm-8:40 am

2 stops44h 40m

Cairns

Thu 5/28

4:55 pm-3:05 pm

2 stops60h 10m

$1,592

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 11 results
1
2
  • Most accurate provider: When it comes to deals on Boston-Cairns flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Boston-Cairns flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Boston-Cairns flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Cairns flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Cairns flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Cairns

Have a flexible travel schedule? Discover the best time to fly to Cairns from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Boston to Cairns. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Cairns?

    Qantas Airways can get you from Boston to Cairns in just under 31h 48m. Your travel time can differ by up to . Airlines will cover a distance of 9642 mi.

  • Can I find deals for flights from Boston to Cairns that include hotel bookings?

    Yes. In addition to deals on Boston to Cairns flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Cairns?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Cairns.

  • Can I find deals for business class flights from Boston to Cairns?

    Yes. Cheapflights offers flight deals from Boston to Cairns by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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