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$1,138+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Apr 28 — May 51
Tue 4/28
Tue 5/5
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 March 29, 2026.

This Justfly.com deal was found by Cheapflights users on 3/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/710:00 pm
BOS
-
CNS
2 stops35h 20m
Qatar Airways
Thu 9/174:55 pm
CNS
-
BOS
2 stops36h 20m
Qatar Airways
Deal found 3/28$1,498
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:00 pm
BOS
-
CNS
2 stops47h 10m
Qatar Airways
Wed 9/169:20 am
CNS
-
BOS
2 stops43h 55m
Qatar Airways
Deal found 3/27$1,505
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:30 pm
BOS
-
CNS
3 stops37h 25m
Air Canada
Thu 9/177:15 pm
CNS
-
BOS
3 stops52h 40m
Air Canada
Deal found 3/24$1,710
This Air Canada deal was found by Cheapflights users on 3/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am
BOS
-
CNS
3 stops43h 55m
Multiple Airlines
Wed 9/167:10 pm
CNS
-
BOS
3 stops41h 30m
Multiple Airlines
Deal found 3/27$1,745
This Air Canada deal was found by Cheapflights users on 3/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/710:50 am
BOS
-
CNS
3 stops39h 05m
Multiple Airlines
Thu 9/177:10 pm
CNS
-
BOS
3 stops52h 45m
Multiple Airlines
Deal found 3/28$1,780
This Qatar Airways deal was found by Cheapflights users on 3/25. 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.
Sat 10/319:05 pm
BOS
-
CNS
2 stops36h 00m
Qatar Airways
Wed 11/45:20 pm
CNS
-
BOS
2 stops60h 00m
Qatar Airways
Deal found 3/25$1,791
This American Airlines deal was found by Cheapflights users on 3/28. 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.
Wed 6/103:00 pm
BOS
-
CNS
2 stops29h 35m
American Airlines
Wed 6/243:45 pm
CNS
-
BOS
2 stops29h 20m
American Airlines
Deal found 3/28$1,798
This Expedia deal was found by Cheapflights users on 3/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:25 pm
BOS
-
CNS
2 stops50h 55m
Multiple Airlines
Sun 5/1711:00 am
CNS
-
BOS
2 stops41h 40m
Multiple Airlines
Deal found 3/26$1,873
This FlightHub deal was found by Cheapflights users on 3/26. 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.
Sat 8/222:25 pm
BOS
-
CNS
2 stops31h 25m
Qantas Airways
Sun 8/306:50 am
CNS
-
BOS
2 stops26h 52m
Qantas Airways
Deal found 3/26$1,905

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 March 29, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,499
(FlightHub)

One-way from

$1,138
(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
Search Deals
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 March 29, 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

Wed 6/10

3:00 pm-10:35 am

2 stops29h 35m

Cairns

Wed 6/24

3:45 pm-7:05 am

2 stops29h 20m

$1,798

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 5/10

4:25 pm-9:20 am

2 stops50h 55m

Cairns

Sun 5/17

11:00 am-2:40 pm

2 stops41h 40m

$1,873

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 6/10

4:06 pm-12:55 pm

2 stops30h 49m

Cairns

Wed 6/24

10:15 am-7:05 am

2 stops34h 50m

$1,936

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 5/11

11:05 pm-10:45 pm

2 stops57h 40m

Cairns

Mon 5/18

3:45 pm-2:10 pm

2 stops60h 25m

$1,979

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 6/10

5:57 pm-12:55 pm

2 stops28h 58m

Cairns

Wed 6/24

5:40 pm-8:54 pm

3 stops41h 14m

$2,466
Cheapest one-way
Quickest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 8/3

6:27 pm-1:00 pm

2 stops28h 33m

$1,138

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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?

    American Airlines and Emirates can get you from Boston to Cairns in just under 29h 35m. Your travel time can differ by up to 28h 05m. 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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