Find flights
When to book
FAQs

Cheap flights from Boston to Cairns from $2,166

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Cairns

Enter your travel dates to find the best prices.

Best flights from Boston to Cairns
Discover carefully curated flight deals from Boston to Cairns that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

Sun 8/214:13BOS - CNS
2 stops35h 37mQantas Airways
Thu 12/217:35CNS - BOS
2 stops38h 29mQantas Airways
Deal found 2/12$2,166
Sun 8/217:57BOS - CNS
2 stops29h 03mUnited Airlines
Thu 12/206:00CNS - BOS
3 stops32h 57mUnited Airlines
Deal found 2/12$3,065
Sun 8/209:51BOS - CNS
2 stops33h 04mCathay Pacific
Thu 12/211:25CNS - BOS
1 stop25h 35mCathay Pacific
Deal found 2/12$3,291
Sun 1/214:13BOS - CNS
2 stops30h 37mQantas Airways
Wed 4/215:35CNS - BOS
2 stops29h 50mQantas Airways
Deal found 3/12$2,389
Sat 31/100:30BOS - CNS
1 stop42h 25mCathay Pacific
Wed 4/214:50CNS - BOS
2 stops46h 10mCathay Pacific
Deal found 3/12$5,714

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 5 December 2025.

Round-trip from

$2,166
Qantas Airways
  • Qantas Airways
  • 8/2-12/2
  • 4 total stops
  • 74h 06m 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 5 December 2025.
Use the filters below to find and compare flights from Boston to Cairns that are best for you.

Fly from

Boston

Fly to

Cairns

Route

Depart

Return

Price

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/2

14:13-16:50

2 stops35h 37m

Cairns

Thu 12/2

17:35-17:04

2 stops38h 29m

$2,166

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 1/2

14:13-11:50

2 stops30h 37m

Cairns

Wed 4/2

15:35-06:25

2 stops29h 50m

$2,389

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/2

17:57-14:00

2 stops29h 03m

Cairns

Thu 12/2

06:00-23:57

3 stops32h 57m

$3,065

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/2

09:51-09:55

2 stops33h 04m

Cairns

Thu 12/2

11:25-22:00

1 stop25h 35m

$3,291

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 31/1

00:30-09:55

1 stop42h 25m

Cairns

Wed 4/2

14:50-22:00

2 stops46h 10m

$5,714

Flights are sorted by cheapest return flights first.

Deals found on 2/12

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 03m. Fly via Qantas Airways, United Airlines, or Cathay Pacific 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Cairns

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Brisbane flights
Boston to Townsville flights
Hartford to Brisbane flights
Albany to Brisbane flights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.