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$1,473+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 8, 2026.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,473
(Priceline)

One-way from

$1,003
(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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Find 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 8, 2026.

This Priceline deal was found by Cheapflights users on 1/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/209:45 amBOS - CNS
2 stops34h 00mMultiple Airlines
Sun 1/256:00 amCNS - BOS
2 stops26h 56mMultiple Airlines
Deal found 1/7$1,473
This Qantas Airways deal was found by Cheapflights users on 1/7. 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 amBOS - CNS
2 stops33h 35mQantas Airways
Wed 3/43:35 pmCNS - BOS
2 stops29h 39mQantas Airways
Deal found 1/7$1,649
This Singapore Airlines deal was found by Cheapflights users on 1/7. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/282:16 pmBOS - CNS
3 stops36h 04mSingapore Airlines
Wed 3/46:35 pmCNS - BOS
2 stops44h 23mSingapore Airlines
Deal found 1/7$2,272
This Gotogate deal was found by Cheapflights users on 1/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/33:35 pmBOS - CNS
3 stops34h 20mMultiple Airlines
Fri 7/176:00 amCNS - BOS
3 stops29h 27mMultiple Airlines
Deal found 1/6$2,435
This oojo deal was found by Cheapflights users on 1/6. 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.
Fri 7/38:00 amBOS - CNS
2 stops43h 35mQantas Airways
Fri 7/177:05 pmCNS - BOS
3 stops41h 56mQantas Airways
Deal found 1/6$2,567
This Qantas Airways deal was found by Cheapflights users on 1/6. 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.
Fri 2/1310:48 amBOS - CNS
2 stops54h 47mQantas Airways
Sun 2/2212:35 pmCNS - BOS
2 stops48h 36mQantas Airways
Deal found 1/6$8,217

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 8, 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

Tue 1/20

9:45 am-10:45 am

2 stops34h 00m

Cairns

Sun 1/25

6:00 am-5:56 pm

2 stops26h 56m

$1,473

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 2/28

8:23 am-10:45 am

2 stops35h 22m

Cairns

Wed 3/4

2:50 pm-6:14 am

2 stops30h 24m

$1,649

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 2/28

2:16 pm-5:20 pm

3 stops36h 04m

Cairns

Wed 3/4

6:35 pm-11:58 pm

2 stops44h 23m

$2,272

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 2/13

10:48 am-8:35 am

2 stops54h 47m

Cairns

Sun 2/22

12:35 pm-10:11 pm

2 stops48h 36m

$8,217

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 2/13

4:04 pm-11:00 am

2 stops27h 56m

Cairns

Sat 2/21

3:35 pm-6:14 am

2 stops29h 39m

$9,071

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

  • 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 35h 22m. 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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