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Cheap flights from Boston to Cairns from $2,048

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 12/3. 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
07:15 - 11:00
BOS
-
CNS
37h 45m
2 stops
Qantas Airways Logo
11:35 - 19:31
CNS
-
BOS
45h 56m
2 stops
$2,048Qantas Airways
Thu, 12 Mar - Tue, 24 Mar
Qantas Airways Logo
10:10 - 10:45
BOS
-
CNS
33h 35m
2 stops
Qantas Airways Logo
14:50 - 06:14
CNS
-
BOS
30h 24m
2 stops
$2,055Qantas Airways
Sat, 28 Feb - Wed, 4 Mar
Qantas Airways Logo
08:23 - 10:45
BOS
-
CNS
35h 22m
2 stops
Qantas Airways Logo
15:35 - 06:14
CNS
-
BOS
29h 39m
2 stops
$2,058Qantas Airways
Sat, 28 Feb - Wed, 4 Mar
Qantas Airways Logo
08:26 - 10:45
BOS
-
CNS
35h 19m
2 stops
Qantas Airways Logo
17:35 - 19:33
CNS
-
BOS
39h 58m
2 stops
$2,073Qantas Airways
Fri, 6 Mar - Fri, 13 Mar
Multiple Airlines Logo
06:15 - 17:30
BOS
-
CNS
44h 15m
3 stops
Multiple Airlines Logo
18:05 - 22:37
CNS
-
BOS
43h 32m
3 stops
$2,091Multiple Airlines
Thu, 26 Feb - Tue, 3 Mar
Qantas Airways Logo
07:15 - 16:15
BOS
-
CNS
42h 00m
2 stops
Qantas Airways Logo
11:45 - 06:14
CNS
-
BOS
33h 29m
2 stops
$2,195Qantas Airways
Sat, 28 Feb - Wed, 4 Mar
Qantas Airways Logo
08:23 - 10:50
BOS
-
CNS
36h 27m
2 stops
Qantas Airways Logo
15:45 - 06:59
CNS
-
BOS
29h 14m
2 stops
$2,199Qantas Airways
Sat, 28 Mar - Sat, 4 Apr
Multiple Airlines Logo
18:10 - 20:20
BOS
-
CNS
36h 10m
2 stops
Multiple Airlines Logo
06:00 - 23:58
CNS
-
BOS
31h 58m
2 stops
$2,258Multiple Airlines
Tue, 2 Jun - Tue, 30 Jun
United Airlines Logo
09:05 - 20:20
BOS
-
CNS
45h 15m
2 stops
United Airlines Logo
06:00 - 23:58
CNS
-
BOS
31h 58m
3 stops
$2,308United Airlines
Tue, 2 Jun - Tue, 30 Jun
United Airlines Logo
11:15 - 23:55
BOS
-
CNS
46h 40m
2 stops
United Airlines Logo
06:00 - 17:04
CNS
-
BOS
25h 04m
2 stops
$2,309United Airlines
Tue, 10 Mar - Tue, 24 Mar

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
12 Mar
BOS07:15Boston Logan Intl
37h 45m
2 stops
CNS11:00Cairns
24 Mar
CNS11:35Cairns
45h 56m
2 stops
BOS19:31Boston Logan Intl
$2,048
Qantas Airways
28 Feb
BOS10:10Boston Logan Intl
33h 35m
2 stops
CNS10:45Cairns
4 Mar
CNS14:50Cairns
30h 24m
2 stops
BOS06:14Boston Logan Intl
$2,055
Qantas Airways
28 Feb
BOS08:23Boston Logan Intl
35h 22m
2 stops
CNS10:45Cairns
4 Mar
CNS15:35Cairns
29h 39m
2 stops
BOS06:14Boston Logan Intl
$2,058

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
2 June
BOS09:05Boston Logan Intl
45h 15m
2 stops
CNS20:20Cairns
30 June
CNS06:00Cairns
31h 58m
3 stops
BOS23:58Boston Logan Intl
$2,308
United Airlines
10 Mar
BOS11:15Boston Logan Intl
46h 40m
2 stops
CNS23:55Cairns
24 Mar
CNS06:00Cairns
25h 04m
2 stops
BOS17:04Boston Logan Intl
$2,309
United Airlines
2 June
BOS05:45Boston Logan Intl
44h 10m
3 stops
CNS15:55Cairns
30 June
CNS06:00Cairns
31h 58m
3 stops
BOS23:58Boston Logan Intl
$2,316

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 13 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

Thu 12/3

07:15-11:00

2 stops37h 45m

Cairns

Tue 24/3

11:35-19:31

2 stops45h 56m

$2,048

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 28/2

10:10-10:45

2 stops33h 35m

Cairns

Wed 4/3

14:50-06:14

2 stops30h 24m

$2,055

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 28/2

08:23-10:45

2 stops35h 22m

Cairns

Wed 4/3

15:35-06:14

2 stops29h 39m

$2,058

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 6/3

08:26-10:45

2 stops35h 19m

Cairns

Fri 13/3

17:35-19:33

2 stops39h 58m

$2,073

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 26/2

06:15-17:30

3 stops44h 15m

Cairns

Tue 3/3

18:05-22:37

3 stops43h 32m

$2,091

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 28/2

07:15-16:15

2 stops42h 00m

Cairns

Wed 4/3

11:45-06:14

2 stops33h 29m

$2,195

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 28/3

08:23-10:50

2 stops36h 27m

Cairns

Sat 4/4

15:45-06:59

2 stops29h 14m

$2,199

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 2/6

18:10-20:20

2 stops36h 10m

Cairns

Tue 30/6

06:00-23:58

2 stops31h 58m

$2,258

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 2/6

09:05-20:20

2 stops45h 15m

Cairns

Tue 30/6

06:00-23:58

3 stops31h 58m

$2,308

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 10/3

11:15-23:55

2 stops46h 40m

Cairns

Tue 24/3

06:00-17:04

2 stops25h 04m

$2,309

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

35h 22m

Direct flights

None
The fastest flight from Boston to Cairns takes 35h 22m
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 35h 22m, 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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