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Cheap flights from Boston to Cairns from $977

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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
8 Aug — 15 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 9 July 2026.

Wed 11/1114:25
BOS
-
CNS
2 stops29h 40m
American Airlines
Thu 19/1106:00
CNS
-
BOS
2 stops30h 18m
American Airlines
Deal found 6/7$2,088
Mon 7/916:27
BOS
-
CNS
2 stops30h 28m
American Airlines
Thu 17/913:55
CNS
-
BOS
2 stops32h 18m
American Airlines
Deal found 6/7$2,096
Wed 11/1105:45
BOS
-
CNS
3 stops51h 10m
United Airlines
Wed 18/1106:00
CNS
-
BOS
2 stops32h 21m
United Airlines
Deal found 6/7$2,148
Mon 9/1108:05
BOS
-
CNS
2 stops38h 55m
United Airlines
Wed 18/1106:00
CNS
-
BOS
2 stops28h 19m
United Airlines
Deal found 6/7$2,151
Sun 8/1117:16
BOS
-
CNS
2 stops54h 39m
United Airlines
Mon 16/1106:00
CNS
-
BOS
2 stops30h 24m
United Airlines
Deal found 6/7$2,173
Wed 11/1105:45
BOS
-
CNS
3 stops51h 10m
United Airlines
Sat 21/1106:00
CNS
-
BOS
2 stops32h 21m
United Airlines
Deal found 6/7$2,220
Mon 9/1118:01
BOS
-
CNS
2 stops28h 59m
United Airlines
Fri 20/1106:00
CNS
-
BOS
2 stops32h 21m
United Airlines
Deal found 6/7$2,223
Sun 8/1117:16
BOS
-
CNS
2 stops54h 39m
United Airlines
Sat 21/1106:00
CNS
-
BOS
2 stops32h 21m
United Airlines
Deal found 6/7$2,245
Tue 10/1112:00
BOS
-
CNS
2 stops32h 05m
Qantas Airways
Thu 19/1106:00
CNS
-
BOS
2 stops28h 30m
Qantas Airways
Deal found 6/7$2,293

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 9 July 2026.

Round-trip from

$2,088

One-way from

$977
American Airlines
  • American Airlines
  • 11/11-19/11
  • 4 total stops
  • 59h 58m total
  • Boston to Cairns
Search Deals
American Airlines
  • American Airlines
  • 3/8
  • 2 total stops
  • 29h 22m 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 9 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

Wed 11/11

05:45-23:55

3 stops51h 10m

Cairns

Wed 18/11

06:00-23:40

3 stops32h 40m

$2,148
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/11

18:01-14:00

2 stops28h 59m

Cairns

Mon 16/11

06:00-23:40

3 stops32h 40m

$2,151

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

12:35-23:28

2 stops48h 53m

$2,231

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 10/11

14:25-11:05

2 stops29h 40m

Cairns

Tue 17/11

11:35-06:18

2 stops33h 43m

$2,321

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

10:40-04:30

2 stops27h 50m

Cairns

Thu 17/9

19:10-11:55

3 stops54h 45m

$2,401

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 23/7

20:20-20:20

2 stops58h 00m

Cairns

Tue 20/10

06:00-21:02

2 stops29h 02m

$2,482

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 28/10

21:40-23:05

2 stops35h 25m

Cairns

Sun 1/11

17:20-13:55

2 stops35h 35m

$3,039

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 28/10

11:00-16:55

2 stops39h 55m

Cairns

Sun 1/11

11:35-07:18

2 stops33h 43m

$3,059
Cheapest one-way

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 15/8

17:01-11:10

3 stops52h 09m

$1,072

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 12/10

12:56-11:55

2 stops32h 59m

$1,081

Flights are sorted by cheapest return flights first.

Deals found on 4/7

Showing 1-10 of 15 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 29h 56m. 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?

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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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