Find flights
When to book
FAQs

Cheap flights from Boston to Cairns from $2,172

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
21 feb — 28 feb1
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 gennaio 2026.

mer 18/210:48
BOS
-
CNS
2 stops32h 57m
Qantas Airways
ven 27/214:50
CNS
-
BOS
2 stops48h 09m
Qantas Airways
Deal found 20/1$2,172
sab 18/422:00
BOS
-
CNS
2 stops35h 20m
Qatar Airways
ven 24/409:20
CNS
-
BOS
2 stops43h 45m
Qatar Airways
Deal found 21/1$2,266
sab 18/410:45
BOS
-
CNS
3 stops36h 55m
Multiple Airlines
ven 24/419:15
CNS
-
BOS
2 stops41h 45m
Multiple Airlines
Deal found 21/1$2,421
sab 28/210:10
BOS
-
CNS
2 stops33h 35m
Qantas Airways
mer 4/306:00
CNS
-
BOS
2 stops39h 14m
Qantas Airways
Deal found 19/1$2,442
mar 7/709:00
BOS
-
CNS
2 stops45h 20m
United Airlines
mar 21/706:00
CNS
-
BOS
3 stops31h 54m
United Airlines
Deal found 20/1$2,609
sab 28/217:50
BOS
-
CNS
2 stops29h 10m
United Airlines
mer 4/306:00
CNS
-
BOS
2 stops30h 47m
United Airlines
Deal found 21/1$2,612
mer 18/205:35
BOS
-
CNS
3 stops42h 20m
United Airlines
ven 27/206:00
CNS
-
BOS
3 stops32h 57m
United Airlines
Deal found 20/1$2,617
ven 3/718:00
BOS
-
CNS
2 stops33h 35m
Qantas Airways
ven 17/716:40
CNS
-
BOS
2 stops44h 49m
Qantas Airways
Deal found 21/1$2,950
sab 18/410:40
BOS
-
CNS
3 stops39h 15m
Air Canada
ven 24/406:00
CNS
-
BOS
3 stops29h 27m
Air Canada
Deal found 21/1$3,019

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 gennaio 2026.

Round-trip from

$2,172
Qantas Airways
  • Qantas Airways
  • 18/2-27/2
  • 4 total stops
  • 81h 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 22 gennaio 2026.
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

mer 18/2

10:48-10:45

2 stops32h 57m

Cairns

ven 27/2

14:50-23:59

2 stops48h 09m

$2,172

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sab 18/4

10:45-13:40

3 stops36h 55m

Cairns

ven 24/4

19:15-23:00

2 stops41h 45m

$2,421

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sab 28/2

10:10-10:45

2 stops33h 35m

Cairns

mer 4/3

06:00-06:14

2 stops39h 14m

$2,442

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

mar 7/7

09:00-20:20

2 stops45h 20m

Cairns

mar 21/7

06:00-23:54

3 stops31h 54m

$2,609

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sab 28/2

08:00-14:00

2 stops39h 00m

Cairns

mer 4/3

06:00-19:56

2 stops28h 56m

$2,612

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

mer 18/2

05:35-14:55

3 stops42h 20m

Cairns

ven 27/2

06:00-23:57

3 stops32h 57m

$2,617

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

sab 18/4

10:40-15:55

3 stops39h 15m

Cairns

ven 24/4

06:00-21:27

3 stops29h 27m

$3,019

Flights are sorted by cheapest return flights first.

Deals found on 20/1

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 57m. Fly via Qantas Airways to get the fastest option. The distance between Boston and Cairns is about 15517 km.

  • 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
Hartford to Brisbane flights
Albany to Brisbane flights
Boston to Townsville 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.