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$851+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
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 May 28, 2026.

This oojo deal was found by Cheapflights users on 5/27. 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.
Mon 9/710:00 pm
BOS
-
CNS
2 stops45h 50m
Multiple Airlines
Thu 9/1710:30 am
CNS
-
BOS
2 stops42h 45m
Multiple Airlines
Deal found 5/27$1,550
This FlightHub deal was found by Cheapflights users on 5/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/284:29 pm
BOS
-
CNS
2 stops35h 06m
Qantas Airways
Tue 7/283:45 pm
CNS
-
BOS
2 stops30h 50m
Qantas Airways
Deal found 5/26$1,911
This Expedia deal was found by Cheapflights users on 5/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 pm
BOS
-
CNS
2 stops29h 40m
Multiple Airlines
Sat 5/307:10 pm
CNS
-
BOS
2 stops35h 29m
Multiple Airlines
Deal found 5/24$2,033
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:00 am
BOS
-
CNS
2 stops44h 35m
Multiple Airlines
Thu 7/166:45 am
CNS
-
BOS
2 stops28h 06m
Multiple Airlines
Deal found 5/25$2,180
This KAYAK deal was found by Cheapflights users on 5/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2812:01 pm
BOS
-
CNS
3 stops40h 24m
Multiple Airlines
Tue 7/281:15 pm
CNS
-
BOS
2 stops43h 25m
Multiple Airlines
Deal found 5/26$2,182
This FlightHub deal was found by Cheapflights users on 5/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:15 pm
BOS
-
CNS
3 stops54h 40m
Air Canada
Thu 9/177:15 pm
CNS
-
BOS
3 stops52h 40m
Air Canada
Deal found 5/26$2,234
This oojo deal was found by Cheapflights users on 5/27. 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.
Mon 9/711:53 am
BOS
-
CNS
3 stops35h 47m
Qantas Airways
Thu 9/176:45 am
CNS
-
BOS
3 stops54h 43m
Qantas Airways
Deal found 5/27$2,294
This oojo deal was found by Cheapflights users on 5/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/309:05 pm
BOS
-
CNS
2 stops35h 50m
Multiple Airlines
Sun 1/311:55 pm
CNS
-
BOS
2 stops53h 25m
Multiple Airlines
Deal found 5/24$2,485

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 May 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,911
(FlightHub)

One-way from

$851
(United Airlines)
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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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 May 28, 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

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

10:00 pm-9:50 am

2 stops45h 50m

Cairns

Thu 9/17

10:30 am-3:15 pm

2 stops42h 45m

$1,550
Quickest round-trip

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/7

11:53 am-1:40 pm

3 stops35h 47m

Cairns

Thu 9/17

3:35 pm-11:28 pm

3 stops45h 53m

$2,294

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 7/10

11:05 pm-3:00 pm

2 stops49h 55m

Cairns

Sun 7/26

6:00 am-2:10 pm

2 stops46h 10m

$2,688
Cheapest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 7/19

6:00 am-11:10 am

2 stops39h 10m

$851

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 7/18

8:27 pm-11:10 am

2 stops48h 43m

$884

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 7/14

10:04 am-11:40 am

3 stops35h 36m

$918

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/16

8:20 pm-11:10 am

2 stops48h 50m

$1,469
Quickest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/13

1:37 pm-11:10 am

3 stops31h 33m

$1,521

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/16

5:46 pm-9:30 pm

3 stops61h 44m

$2,061

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/16

12:25 pm-10:35 am

3 stops32h 10m

$2,424

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/26

Sorted by cheapest first

Compare providers for flights from Boston to Cairns

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Cairns in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Cairns flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Cairns flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

  • 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.

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