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Cheap flights from Boston to Cairns from $900

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 21/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
21 Apr — 28 Apr1
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 22 March 2026.

Sun 23/822:00
BOS
-
CNS
2 stops35h 20m
Qatar Airways
Tue 1/916:55
CNS
-
BOS
2 stops36h 20m
Qatar Airways
Deal found 17/3$2,134
Mon 7/922:00
BOS
-
CNS
2 stops35h 20m
Qatar Airways
Thu 17/916:55
CNS
-
BOS
2 stops36h 20m
Qatar Airways
Deal found 18/3$2,137
Fri 21/822:00
BOS
-
CNS
2 stops35h 20m
Qatar Airways
Tue 1/916:55
CNS
-
BOS
2 stops36h 20m
Qatar Airways
Deal found 17/3$2,191
Sun 23/822:00
BOS
-
CNS
2 stops35h 20m
Qatar Airways
Mon 31/813:40
CNS
-
BOS
2 stops63h 35m
Qatar Airways
Deal found 17/3$2,226
Fri 16/1022:00
BOS
-
CNS
2 stops35h 20m
Qatar Airways
Sat 31/1009:15
CNS
-
BOS
2 stops44h 05m
Qatar Airways
Deal found 17/3$2,246
Tue 5/507:00
BOS
-
CNS
2 stops37h 35m
Qantas Airways
Tue 12/513:40
CNS
-
BOS
2 stops45h 21m
Qantas Airways
Deal found 21/3$2,315
Mon 7/906:00
BOS
-
CNS
3 stops43h 55m
Multiple Airlines
Thu 17/919:10
CNS
-
BOS
3 stops52h 45m
Multiple Airlines
Deal found 18/3$2,382

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 22 March 2026.

Round-trip from

$2,134

One-way from

$900
Qatar Airways
  • Qatar Airways
  • 23/8-1/9
  • 4 total stops
  • 71h 40m total
  • Boston to Cairns
Search Deals
21/8
  • 21/8
  • 3 total stops
  • 48h 57m 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 22 March 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

22:00-23:20

2 stops35h 20m

Cairns

Thu 17/9

16:55-15:15

2 stops36h 20m

$2,137

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/5

17:54-16:55

3 stops33h 01m

Cairns

Tue 12/5

11:20-19:30

3 stops46h 10m

$2,373

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 11/8

17:45-12:55

2 stops29h 10m

Cairns

Wed 26/8

15:45-09:32

3 stops31h 47m

$2,668

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 22/8

07:00-10:35

2 stops37h 35m

Cairns

Sun 30/8

06:00-07:22

2 stops39h 22m

$2,682

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 21/8

07:00-10:35

2 stops37h 35m

Cairns

Sun 30/8

06:00-07:22

2 stops39h 22m

$2,682
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 12/8

18:11-11:10

2 stops26h 59m

Cairns

Wed 26/8

06:00-23:54

3 stops31h 54m

$2,686

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/5

13:55-15:55

2 stops36h 00m

Cairns

Tue 12/5

06:00-19:07

2 stops27h 07m

$2,692

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 11/8

16:15-15:55

2 stops33h 40m

Cairns

Wed 26/8

06:00-23:54

3 stops31h 54m

$2,693

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 10/8

07:28-11:10

2 stops37h 42m

Cairns

Wed 26/8

06:00-23:54

3 stops31h 54m

$2,713

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 12/8

09:35-11:10

2 stops35h 35m

Cairns

Fri 28/8

06:00-23:54

3 stops31h 54m

$2,757

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 13 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 33h 01m. Fly via Qatar Airways 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

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

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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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