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$1,287+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
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 February 26, 2026.

This oojo deal was found by Cheapflights users on 2/25. 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 4/112:02 pm
BOS
-
CNS
2 stops31h 48m
Qantas Airways
Sat 4/185:00 pm
CNS
-
BOS
2 stops53h 04m
Qantas Airways
Deal found 2/25$1,287
This oojo deal was found by Cheapflights users on 2/22. 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.
Thu 4/95:54 pm
BOS
-
CNS
2 stops56h 21m
Qantas Airways
Thu 4/1612:35 pm
CNS
-
BOS
2 stops46h 26m
Qantas Airways
Deal found 2/22$1,297
This Gurufare deal was found by Cheapflights users on 2/24. 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.
Wed 2/258:26 am
BOS
-
CNS
2 stops35h 19m
Qantas Airways
Mon 3/22:50 pm
CNS
-
BOS
2 stops40h 10m
Qantas Airways
Deal found 2/24$1,346
This oojo deal was found by Cheapflights users on 2/25. 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.
Mon 9/72:33 pm
BOS
-
CNS
2 stops31h 17m
Qantas Airways
Thu 9/176:20 pm
CNS
-
BOS
2 stops40h 11m
Qantas Airways
Deal found 2/25$1,366
This Qantas Airways deal was found by Cheapflights users on 2/23. 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 2/2810:10 am
BOS
-
CNS
2 stops33h 35m
Qantas Airways
Wed 3/43:35 pm
CNS
-
BOS
2 stops44h 25m
Qantas Airways
Deal found 2/23$1,376
This lastminute.com deal was found by Cheapflights users on 2/25. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:36 pm
BOS
-
CNS
2 stops29h 24m
Multiple Airlines
Mon 3/96:05 pm
CNS
-
BOS
2 stops40h 55m
Multiple Airlines
Deal found 2/25$1,392
This American Airlines deal was found by Cheapflights users on 2/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:07 pm
BOS
-
CNS
2 stops28h 33m
American Airlines
Thu 7/233:45 pm
CNS
-
BOS
2 stops29h 14m
American Airlines
Deal found 2/24$1,406
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:45 pm
BOS
-
CNS
2 stops33h 15m
United Airlines
Mon 3/96:00 am
CNS
-
BOS
3 stops31h 57m
United Airlines
Deal found 2/25$1,722

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 February 26, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,287
(oojo)
Provider with most accurate pricing for Boston Logan Intl-Cairns flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Cairns flights.
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From Boston Logan Intl to Cairns
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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 February 26, 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

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 4/11

2:02 pm-11:50 am

2 stops31h 48m

Cairns

Sat 4/18

5:00 pm-8:04 am

2 stops53h 04m

$1,287

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/2

6:07 pm-12:40 pm

2 stops28h 33m

Cairns

Thu 7/23

3:45 pm-6:59 am

2 stops29h 14m

$1,406

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/2

6:00 pm-12:40 pm

2 stops28h 40m

Cairns

Thu 7/23

3:45 pm-9:26 am

3 stops31h 41m

$1,768

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 4/9

1:00 pm-5:35 pm

3 stops38h 35m

Cairns

Thu 4/16

5:40 pm-11:05 pm

2 stops67h 25m

$1,838

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 4/11

1:00 pm-1:40 pm

3 stops34h 40m

Cairns

Sat 4/18

7:10 pm-10:39 pm

3 stops41h 29m

$1,842

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

3:00 pm-5:35 pm

2 stops36h 35m

Cairns

Sun 7/26

11:20 am-4:35 pm

2 stops43h 15m

$2,121

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

11:05 pm-8:40 am

2 stops67h 35m

Cairns

Sun 7/26

6:55 pm-2:10 pm

2 stops57h 15m

$2,585

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/2

12:30 pm-3:55 pm

3 stops37h 25m

Cairns

Thu 7/23

7:15 pm-10:38 pm

3 stops41h 23m

$2,866

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

12:43 pm-5:00 pm

3 stops38h 17m

Cairns

Sun 7/26

6:15 pm-7:30 pm

3 stops39h 15m

$3,340

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

Sorted by cheapest first
  • 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% 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 and American Airlines can get you from Boston to Cairns in just under 28h 33m. Your travel time can differ by up to 3h 15m. Airlines will cover a distance of 9642 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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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