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$667+ Cheap flights from Boston (BOS) to Cairns (CNS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
May 22 — May 291
Fri 5/22
Fri 5/29
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 April 22, 2026.

This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2211:30 am
BOS
-
CNS
2 stops32h 15m
Qantas Airways
Sun 12/62:40 pm
CNS
-
BOS
2 stops31h 34m
Qantas Airways
Deal found 4/17$1,618
This Ovago deal was found by Cheapflights users on 4/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:27 pm
BOS
-
CNS
2 stops30h 13m
Multiple Airlines
Sun 8/97:10 pm
CNS
-
BOS
2 stops37h 49m
Multiple Airlines
Deal found 4/17$1,655
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Fri 6/56:26 pm
BOS
-
CNS
2 stops28h 34m
United Airlines
Fri 6/126:00 am
CNS
-
BOS
2 stops26h 59m
United Airlines
Deal found 4/21$1,664
This oojo deal was found by Cheapflights users on 4/20. 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 9/310:30 am
BOS
-
CNS
2 stops35h 20m
Multiple Airlines
Mon 9/141:30 pm
CNS
-
BOS
2 stops44h 12m
Multiple Airlines
Deal found 4/20$1,687
This BusinessClass deal was found by Cheapflights users on 4/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:11 pm
BOS
-
CNS
2 stops29h 29m
Multiple Airlines
Thu 9/177:10 pm
CNS
-
BOS
2 stops37h 52m
Multiple Airlines
Deal found 4/17$1,707
This oojo deal was found by Cheapflights users on 4/20. 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 6/47:35 am
BOS
-
CNS
2 stops37h 00m
Qantas Airways
Thu 6/117:10 pm
CNS
-
BOS
2 stops39h 28m
Qantas Airways
Deal found 4/20$1,736
This Qantas Airways deal was found by Cheapflights users on 4/19. 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.
Thu 9/37:00 am
BOS
-
CNS
2 stops47h 50m
Qantas Airways
Mon 9/76:20 pm
CNS
-
BOS
2 stops38h 22m
Qantas Airways
Deal found 4/19$1,791
This oojo deal was found by Cheapflights users on 4/18. 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.
Mon 4/2010:00 am
BOS
-
CNS
2 stops42h 25m
Multiple Airlines
Thu 4/3010:15 am
CNS
-
BOS
2 stops44h 38m
Multiple Airlines
Deal found 4/18$1,795
This BusinessClass deal was found by Cheapflights users on 4/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/228:00 am
BOS
-
CNS
3 stops39h 10m
Air New Zealand
Sun 12/612:05 pm
CNS
-
BOS
2 stops43h 33m
Air New Zealand
Deal found 4/17$1,938

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 April 22, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,655
(Ovago)

One-way from

$667
(Kiwi.com)
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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One-way flight 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 April 22, 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
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 6/5

6:26 pm-1:00 pm

2 stops28h 34m

Cairns

Fri 6/12

6:00 am-6:59 pm

2 stops26h 59m

$1,664

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

8:35 pm-12:55 pm

2 stops50h 20m

Cairns

Sun 7/26

9:40 pm-11:10 pm

2 stops39h 30m

$1,791

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 6/6

11:05 pm-9:30 am

2 stops44h 25m

Cairns

Sat 6/13

6:00 am-2:10 pm

2 stops70h 10m

$2,082

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 6/4

6:27 pm-12:55 pm

2 stops28h 28m

Cairns

Thu 6/11

3:45 pm-9:55 am

3 stops32h 10m

$2,248

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

6:00 am-4:30 am

2 stops32h 30m

Cairns

Sat 7/18

7:10 pm-9:53 am

3 stops52h 43m

$2,435
Cheapest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 8/28

8:43 pm-11:40 am

3 stops48h 57m

$667

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/30

7:25 am-4:30 am

2 stops31h 05m

$910

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/20

8:20 pm-8:20 pm

2 stops58h 00m

$922

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 8/28

1:45 am-8:15 pm

3 stops52h 30m

$943

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/20

6:30 pm-4:30 am

3 stops44h 00m

$1,021

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/19

Showing 1-10 of 15 resultsSorted by cheapest first
1
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  • 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?

    United Airlines and Qantas Airways can get you from Boston to Cairns in just under 28h 34m. Your travel time can differ by up to 21h 46m. 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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