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Cheap flights from Boston to Cairns from $1,170

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
29 May — 5 Jun1
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 29 April 2026.

Mon 7/916:25
BOS
-
CNS
2 stops40h 15m
Multiple Airlines
Thu 17/915:35
CNS
-
BOS
2 stops37h 05m
Multiple Airlines
Deal found 26/4$2,474
Wed 1/716:29
BOS
-
CNS
2 stops32h 31m
American Airlines
Tue 21/715:45
CNS
-
BOS
2 stops30h 50m
American Airlines
Deal found 28/4$2,512
Fri 3/718:26
BOS
-
CNS
2 stops35h 54m
United Airlines
Wed 22/706:00
CNS
-
BOS
2 stops25h 04m
United Airlines
Deal found 24/4$2,639
Fri 10/720:35
BOS
-
CNS
2 stops55h 00m
Qantas Airways
Sun 26/715:45
CNS
-
BOS
2 stops30h 46m
Qantas Airways
Deal found 25/4$2,722
Thu 11/616:29
BOS
-
CNS
2 stops28h 06m
Multiple Airlines
Thu 18/615:35
CNS
-
BOS
2 stops29h 00m
Multiple Airlines
Deal found 27/4$2,785
Sat 24/1018:13
BOS
-
CNS
2 stops39h 42m
United Airlines
Wed 28/1006:00
CNS
-
BOS
2 stops29h 42m
United Airlines
Deal found 26/4$2,792
Mon 7/911:53
BOS
-
CNS
3 stops35h 47m
Qantas Airways
Thu 17/918:20
CNS
-
BOS
2 stops43h 23m
Qantas Airways
Deal found 28/4$2,898
Wed 8/717:33
BOS
-
CNS
2 stops34h 02m
Qantas Airways
Wed 29/715:45
CNS
-
BOS
2 stops30h 50m
Qantas Airways
Deal found 27/4$2,915

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 29 April 2026.

Round-trip from

$2,474

One-way from

$1,170
7/9-17/9
  • 7/9-17/9
  • 4 total stops
  • 77h 20m total
  • Boston to Cairns
Search Deals
24/5
  • 24/5
  • 2 total stops
  • 27h 05m 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 29 April 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

16:25-22:40

2 stops40h 15m

Cairns

Thu 17/9

15:35-14:40

2 stops37h 05m

$2,474
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 3/7

18:26-20:20

2 stops35h 54m

Cairns

Wed 22/7

06:00-17:04

2 stops25h 04m

$2,639

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 1/7

13:37-20:20

3 stops40h 43m

Cairns

Tue 21/7

06:00-01:11

2 stops33h 11m

$2,639

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 10/7

20:35-17:35

2 stops55h 00m

Cairns

Sun 26/7

15:45-08:31

2 stops30h 46m

$2,722

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 24/10

16:15-23:55

2 stops41h 40m

Cairns

Wed 28/10

06:00-23:54

3 stops31h 54m

$2,792

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 19/9

14:03-20:20

2 stops40h 17m

Cairns

Wed 23/9

06:00-23:54

3 stops31h 54m

$2,792
Cheapest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 20/7

20:20-20:20

2 stops58h 00m

$1,208

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 24/5

11:35-19:30

3 stops41h 55m

$1,222

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 20/7

18:30-04:30

3 stops44h 00m

$1,382

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 19/7

20:20-11:10

2 stops48h 50m

$1,723

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 14 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 35h 54m. Fly via United 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

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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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