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Cheap flights from Boston to Cairns from $1,964

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cairns departing on 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
14:36 - 11:50
BOS
-
CNS
31h 14m
2 stops
Qantas Airways Logo
12:35 - 08:04
CNS
-
BOS
57h 29m
2 stops
$1,964Qantas Airways
Fri, 3 Apr - Fri, 10 Apr
American Airlines Logo
09:30 - 11:00
BOS
-
CNS
35h 30m
2 stops
American Airlines Logo
15:35 - 15:13
CNS
-
BOS
37h 38m
2 stops
$2,018American Airlines
Thu, 12 Mar - Tue, 24 Mar
United Airlines Logo
13:45 - 11:00
BOS
-
CNS
31h 15m
2 stops
United Airlines Logo
06:00 - 23:57
CNS
-
BOS
31h 57m
3 stops
$2,255United Airlines
Thu, 12 Mar - Tue, 24 Mar
United Airlines Logo
05:45 - 14:55
BOS
-
CNS
43h 10m
3 stops
United Airlines Logo
06:00 - 23:57
CNS
-
BOS
31h 57m
3 stops
$2,260United Airlines
Thu, 12 Mar - Tue, 24 Mar
Qantas Airways Logo
14:33 - 12:55
BOS
-
CNS
32h 22m
2 stops
Qantas Airways Logo
12:35 - 19:43
CNS
-
BOS
45h 08m
2 stops
$2,551Qantas Airways
Wed, 5 Aug - Sat, 15 Aug
Multiple Airlines Logo
13:00 - 13:40
BOS
-
CNS
34h 40m
3 stops
Multiple Airlines Logo
19:10 - 22:39
CNS
-
BOS
41h 29m
3 stops
$2,583Multiple Airlines
Fri, 3 Apr - Fri, 10 Apr
Air New Zealand Logo
06:20 - 16:55
BOS
-
CNS
44h 35m
3 stops
Air New Zealand Logo
11:55 - 23:20
CNS
-
BOS
25h 25m
2 stops
$2,629Air New Zealand
Wed, 5 Aug - Sat, 15 Aug
United Airlines Logo
20:20 - 20:20
BOS
-
CNS
58h 00m
2 stops
United Airlines Logo
06:00 - 21:21
CNS
-
BOS
29h 21m
2 stops
$2,759United Airlines
Sat, 11 Jul - Fri, 17 Jul
United Airlines Logo
20:15 - 15:55
BOS
-
CNS
53h 40m
2 stops
United Airlines Logo
06:00 - 18:59
CNS
-
BOS
26h 59m
2 stops
$2,833United Airlines
Sat, 11 Jul - Fri, 24 Jul
United Airlines Logo
20:15 - 15:55
BOS
-
CNS
53h 40m
2 stops
United Airlines Logo
06:00 - 23:58
CNS
-
BOS
31h 58m
3 stops
$2,929United Airlines
Sat, 11 Jul - Fri, 24 Jul

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
3 Apr
BOS14:36Boston Logan Intl
31h 14m
2 stops
CNS11:50Cairns
10 Apr
CNS12:35Cairns
57h 29m
2 stops
BOS08:04Boston Logan Intl
$1,964
Qantas Airways
28 Feb
BOS10:10Boston Logan Intl
33h 35m
2 stops
CNS10:45Cairns
4 Mar
CNS15:35Cairns
29h 39m
2 stops
BOS06:14Boston Logan Intl
$2,075
Qantas Airways
28 Feb
BOS08:23Boston Logan Intl
35h 22m
2 stops
CNS10:45Cairns
4 Mar
CNS14:50Cairns
30h 24m
2 stops
BOS06:14Boston Logan Intl
$2,076

Singapore Airlines flights from Boston to Cairns

Our best Singapore Airlines deals on Boston to Cairns flight tickets
Singapore Airlines
10 July
BOS15:50Boston Logan Intl
35h 10m
2 stops
CNS17:00Cairns
26 July
CNS18:15Cairns
37h 14m
3 stops
BOS17:29Boston Logan Intl
$5,834
Singapore Airlines
28 Feb
BOS14:16Boston Logan Intl
36h 04m
3 stops
CNS17:20Cairns
4 Mar
CNS18:35Cairns
40h 23m
3 stops
BOS19:58Boston Logan Intl
$5,884
Singapore Airlines
28 Feb
BOS14:16Boston Logan Intl
36h 04m
3 stops
CNS17:20Cairns
4 Mar
CNS18:35Cairns
40h 23m
3 stops
BOS19:58Boston Logan Intl
$5,885

momondo 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, momondo users made 78,305 searches. Data last updated 20 February 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

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 3/4

14:36-11:50

2 stops31h 14m

Cairns

Fri 10/4

12:35-08:04

2 stops57h 29m

$1,964

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 12/3

09:30-11:00

2 stops35h 30m

Cairns

Tue 24/3

15:35-15:13

2 stops37h 38m

$2,018

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 12/3

13:45-11:00

2 stops31h 15m

Cairns

Tue 24/3

06:00-23:57

3 stops31h 57m

$2,255

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 12/3

05:45-14:55

3 stops43h 10m

Cairns

Tue 24/3

06:00-23:57

3 stops31h 57m

$2,260

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 5/8

14:33-12:55

2 stops32h 22m

Cairns

Sat 15/8

12:35-19:43

2 stops45h 08m

$2,551

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 3/4

13:00-13:40

3 stops34h 40m

Cairns

Fri 10/4

19:10-22:39

3 stops41h 29m

$2,583

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 5/8

06:20-16:55

3 stops44h 35m

Cairns

Sat 15/8

11:55-23:20

2 stops25h 25m

$2,629

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 11/7

20:20-20:20

2 stops58h 00m

Cairns

Fri 17/7

06:00-21:21

2 stops29h 21m

$2,759

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 11/7

20:15-15:55

2 stops53h 40m

Cairns

Fri 24/7

06:00-18:59

2 stops26h 59m

$2,833

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 11/7

20:15-15:55

2 stops53h 40m

Cairns

Fri 24/7

06:00-23:58

3 stops31h 58m

$2,929

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Boston to Cairns

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Cairns according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Boston to Cairns (BOS to CNS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Cairns

Fastest flight time

31h 14m

Direct flights

None
The fastest flight from Boston to Cairns takes 31h 14m
There are no direct flights from Boston to Cairns. There are no popular flight routes from Boston to Cairns.
Search flight deals

  • How far is Boston Logan Intl to Cairns by plane?

    Boston Logan Intl and Cairns are 15516.0 km apart from one another. Flights usually cover this in 31h 14m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Cairns Airport?

    Prices for flights from Boston Logan Intl Airport to Cairns Airport are updated daily.

  • How old do you have to be to fly from Boston Logan Intl Airport to Cairns Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Cairns Airport.

  • What documentation or ID do you need to fly to Cairns Airport?

    The travel and health documents you'll need for your trip to Cairns Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Cairns Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Boston to Cairns?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Boston from Cairns. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Boston to Cairns with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Travelling to a place near Cairns?

Book flights to Cairns if you plan to visit one of these locations
Port Douglas
Palm Cove
Trinity Beach
Mission Beach

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Cairns?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to Cairns . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boston to Cairns with flexible booking policies on momondo?

All flight searches from Boston to Cairns on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boston to Cairns?

momondo helps you find the best flight between Boston and Cairns by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to Cairns right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Cairns flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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