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$1,426+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
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 enero 27, 2026.

This oojo deal was found by Cheapflights users on 1/26. 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.
jue. 3/124:04 pm
BOS
-
CNS
2 stops52h 41m
Qantas Airways
jue. 3/195:35 pm
CNS
-
BOS
2 stops37h 39m
Qantas Airways
Deal found 1/26$1,426
This lastminute.com deal was found by Cheapflights users on 1/25. 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.
sáb. 1/3112:11 pm
BOS
-
CNS
2 stops31h 34m
Multiple Airlines
sáb. 2/77:45 am
CNS
-
BOS
2 stops28h 08m
Multiple Airlines
Deal found 1/25$1,431
This oojo deal was found by Cheapflights users on 1/27. 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.
mié. 2/188:26 am
BOS
-
CNS
2 stops35h 19m
Qantas Airways
vie. 2/279:20 am
CNS
-
BOS
2 stops51h 52m
Qantas Airways
Deal found 1/27$1,457
This SmartFares deal was found by Cheapflights users on 1/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/188:40 pm
BOS
-
CNS
3 stops44h 50m
Multiple Airlines
vie. 2/275:20 pm
CNS
-
BOS
2 stops59h 35m
Multiple Airlines
Deal found 1/27$1,570
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/129:40 pm
BOS
-
CNS
2 stops47h 20m
Multiple Airlines
jue. 3/1912:35 pm
CNS
-
BOS
3 stops40h 53m
Multiple Airlines
Deal found 1/26$1,616
This Qantas Airways deal was found by Cheapflights users on 1/26. 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.
sáb. 2/284:04 pm
BOS
-
CNS
2 stops27h 56m
Qantas Airways
mié. 3/45:35 pm
CNS
-
BOS
2 stops43h 37m
Qantas Airways
Deal found 1/26$1,656
This United Airlines deal was found by Cheapflights users on 1/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/285:50 pm
BOS
-
CNS
2 stops54h 05m
United Airlines
mié. 3/46:00 am
CNS
-
BOS
2 stops28h 56m
United Airlines
Deal found 1/24$1,660
This Qatar Airways deal was found by Cheapflights users on 1/25. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/288:40 pm
BOS
-
CNS
2 stops35h 25m
Qatar Airways
mié. 3/45:20 pm
CNS
-
BOS
2 stops59h 35m
Qatar Airways
Deal found 1/25$1,788
This United Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 2/185:50 pm
BOS
-
CNS
2 stops29h 10m
United Airlines
vie. 2/276:00 am
CNS
-
BOS
3 stops32h 57m
United Airlines
Deal found 1/27$1,845

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 enero 27, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,426
(oojo)
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
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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 enero 27, 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

sáb. 1/31

12:11 pm-10:45 am

2 stops31h 34m

Cairns

sáb. 2/7

7:45 am-8:53 pm

2 stops28h 08m

$1,431

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

mié. 2/18

8:26 am-10:45 am

2 stops35h 19m

Cairns

vie. 2/27

9:20 am-10:12 pm

2 stops51h 52m

$1,457

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

mié. 2/18

8:40 pm-8:30 am

3 stops44h 50m

Cairns

vie. 2/27

5:20 pm-1:55 pm

2 stops59h 35m

$1,570

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sáb. 2/28

4:04 pm-11:00 am

2 stops27h 56m

Cairns

mié. 3/4

5:35 pm-10:12 pm

2 stops43h 37m

$1,656

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sáb. 2/28

5:50 pm-2:55 pm

2 stops54h 05m

Cairns

mié. 3/4

6:00 am-7:56 pm

2 stops28h 56m

$1,660

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sáb. 2/28

8:40 pm-11:05 pm

2 stops35h 25m

Cairns

mié. 3/4

5:20 pm-1:55 pm

2 stops59h 35m

$1,788

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

mié. 2/18

5:50 pm-2:00 pm

2 stops29h 10m

Cairns

vie. 2/27

6:00 am-11:57 pm

3 stops32h 57m

$1,845

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

jue. 3/12

5:30 am-4:35 am

3 stops33h 05m

Cairns

jue. 3/19

12:35 pm-3:28 pm

3 stops40h 53m

$1,999

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

  • 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 United Airlines can get you from Boston to Cairns in just under 35h 19m. Your travel time can differ by up to 18h 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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