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Cheap flights from Boston to Cairns from $968

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
15 Aug — 22 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Cairns

Enter your travel dates to find the best prices.

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 16 July 2026.

Mon 7/914:32
BOS
-
CNS
2 stops32h 23m
American Airlines
Thu 17/913:55
CNS
-
BOS
2 stops32h 18m
American Airlines
Deal found 11/7$2,079
Tue 11/810:30
BOS
-
CNS
2 stops36h 25m
Qantas Airways
Tue 18/813:40
CNS
-
BOS
2 stops44h 02m
Qantas Airways
Deal found 12/7$2,127
Tue 11/810:30
BOS
-
CNS
2 stops45h 55m
Multiple Airlines
Tue 18/819:10
CNS
-
BOS
2 stops42h 34m
Multiple Airlines
Deal found 12/7$2,149
Sat 29/807:00
BOS
-
CNS
2 stops38h 50m
Qantas Airways
Wed 30/906:50
CNS
-
BOS
2 stops27h 02m
Qantas Airways
Deal found 15/7$2,177
Mon 7/916:59
BOS
-
CNS
2 stops29h 56m
Qantas Airways
Thu 17/913:40
CNS
-
BOS
2 stops44h 12m
Qantas Airways
Deal found 15/7$2,316

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 16 July 2026.

Round-trip from

$2,079

One-way from

$968
American Airlines
  • American Airlines
  • 7/9-17/9
  • 4 total stops
  • 64h 41m total
  • Boston to Cairns
Search Deals
American Airlines
  • American Airlines
  • 19/8
  • 2 total stops
  • 29h 56m total
  • Boston to Cairns
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 16 July 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 return flight

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

14:32-12:55

2 stops32h 23m

Cairns

Thu 17/9

13:55-08:13

2 stops32h 18m

$2,079

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 29/8

07:00-11:50

2 stops38h 50m

Cairns

Wed 30/9

06:50-19:52

2 stops27h 02m

$2,177
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

06:50-21:27

2 stops28h 37m

$2,320

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 29/8

07:00-11:50

2 stops38h 50m

Cairns

Thu 1/10

15:45-23:28

2 stops45h 43m

$2,385

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 29/8

18:50-04:30

2 stops43h 40m

Cairns

Wed 30/9

19:10-11:55

3 stops54h 45m

$2,418

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 11/9

22:00-23:20

2 stops35h 20m

Cairns

Tue 15/9

16:55-15:15

2 stops36h 20m

$2,709

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 14/8

07:00-12:55

2 stops39h 55m

Cairns

Wed 19/8

06:50-22:06

2 stops29h 16m

$2,735

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

10:40-04:30

2 stops27h 50m

Cairns

Thu 17/9

19:15-22:40

3 stops41h 25m

$2,854

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 28/10

08:05-11:00

2 stops36h 55m

Cairns

Sun 1/11

06:00-00:40

3 stops32h 40m

$2,862
Cheapest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 15/8

17:01-11:10

3 stops52h 09m

$1,062

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 16 resultsSorted by cheapest first
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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 return 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?

    There are many flights that can get you from Boston to Cairns in 32h 23m. Fly via American Airlines or Qantas Airways to get the fastest option. The distance between Boston and Cairns is about 15517 km. This flight may include one or multiple stops.

  • 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 holiday 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

Travelling to a place near Cairns?

Book flights to Cairns if you plan to visit one of these locations
Mission Beach
Trinity Beach

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Alternative routes for Boston to Cairns

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Cairns?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Cairns from Boston today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Boston to Cairns?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Cairns.

Can Cheapflights find flights from Boston to Cairns with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to Cairns, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boston to Cairns become cheaper?

Yes, Cheapflights offers price alerts on Boston to Cairns flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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