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Cheap flights from Boston to Cairns from $1,046

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cairns departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Boston to Cairns

Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:00 - 10:40BOS  Boston Logan Intl-CNS Cairns
32h 40m2 stops Los Angeles Brisbane
American Airlines Logo
06:00 - 22:00CNS  Cairns-BOS Boston Logan Intl
31h 00m2 stops Brisbane Los Angeles
$2,041American Airlines
Fri, 5 Feb - Sun, 14 Feb
Multiple Airlines Logo
18:50 - 04:30BOS  Boston Logan Intl-CNS Cairns
43h 40m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
19:10 - 22:40CNS  Cairns-BOS Boston Logan Intl
41h 30m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$2,297Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
10:40 - 04:30BOS  Boston Logan Intl-CNS Cairns
27h 50m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
19:10 - 11:51CNS  Cairns-BOS Boston Logan Intl
54h 41m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$2,297Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
10:40 - 04:30BOS  Boston Logan Intl-CNS Cairns
27h 50m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
19:15 - 22:40CNS  Cairns-BOS Boston Logan Intl
41h 25m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$2,350Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Qatar Airways Logo
22:00 - 09:50BOS  Boston Logan Intl-CNS Cairns
45h 50m2 stops Doha Hamad Intl Melbourne
Qatar Airways Logo
16:35 - 15:15CNS  Cairns-BOS Boston Logan Intl
60h 40m2 stops Sydney Kingsford Smith Doha Hamad Intl
$2,364Qatar Airways
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
22:00 - 23:20BOS  Boston Logan Intl-CNS Cairns
35h 20m2 stops Doha Hamad Intl Brisbane
Multiple Airlines Logo
10:10 - 15:15CNS  Cairns-BOS Boston Logan Intl
43h 05m2 stops Adelaide Doha Hamad Intl
$2,464Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Qantas Airways Logo
07:00 - 16:40BOS  Boston Logan Intl-CNS Cairns
43h 40m2 stops Los Angeles Melbourne
Qantas Airways Logo
06:50 - 22:06CNS  Cairns-BOS Boston Logan Intl
29h 16m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$2,768Qantas Airways
Sat, 29 Aug - Sat, 5 Sep
Qantas Airways Logo
07:00 - 11:50BOS  Boston Logan Intl-CNS Cairns
38h 50m2 stops Los Angeles Melbourne
Qantas Airways Logo
06:50 - 19:42CNS  Cairns-BOS Boston Logan Intl
26h 52m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$2,896Qantas Airways
Sat, 29 Aug - Wed, 2 Sep
United Airlines Logo
16:15 - 11:10BOS  Boston Logan Intl-CNS Cairns
28h 55m2 stops San Francisco Brisbane
United Airlines Logo
06:00 - 23:59CNS  Cairns-BOS Boston Logan Intl
31h 59m3 stops Brisbane San Francisco Washington, D.C. Dulles Intl
$3,275United Airlines
Wed, 2 Sep - Wed, 9 Sep
United Airlines Logo
17:01 - 11:10BOS  Boston Logan Intl-CNS Cairns
52h 09m3 stops Chicago O'Hare Intl San Francisco Brisbane
United Airlines Logo
06:00 - 23:59CNS  Cairns-BOS Boston Logan Intl
31h 59m3 stops Brisbane San Francisco Washington, D.C. Dulles Intl
$3,315United Airlines
Tue, 1 Sep - Tue, 8 Sep

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Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
7 Sept
BOS06:00Boston Logan Intl
43h 55m
3 stops
CNS15:55Cairns
17 Sept
CNS19:15Cairns
54h 36m
3 stops
BOS11:51Boston Logan Intl
$3,377
Air Canada
7 Sept
BOS10:50Boston Logan Intl
39h 05m
3 stops
CNS15:55Cairns
17 Sept
CNS19:15Cairns
41h 25m
3 stops
BOS22:40Boston Logan Intl
$3,429

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
29 Aug
BOS07:00Boston Logan Intl
43h 40m
2 stops
CNS16:40Cairns
5 Sept
CNS06:50Cairns
29h 16m
2 stops
BOS22:06Boston Logan Intl
$2,768
Qantas Airways
29 Aug
BOS07:00Boston Logan Intl
38h 50m
2 stops
CNS11:50Cairns
2 Sept
CNS06:50Cairns
26h 52m
2 stops
BOS19:42Boston Logan Intl
$2,896

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 18 August 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 Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Fri 5/2

11:00-10:40

2 stops32h 40m

Cairns

Sun 14/2

06:00-22:00

2 stops31h 00m

$2,041

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 2/9

18:50-04:30

2 stops43h 40m

Cairns

Wed 9/9

19:10-22:40

3 stops41h 30m

$2,297

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 7/9

10:40-04:30

2 stops27h 50m

Cairns

Thu 17/9

19:10-11:51

3 stops54h 41m

$2,297

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 7/9

10:40-04:30

2 stops27h 50m

Cairns

Thu 17/9

19:15-22:40

3 stops41h 25m

$2,350

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 2/9

22:00-09:50

2 stops45h 50m

Cairns

Wed 9/9

16:35-15:15

2 stops60h 40m

$2,364

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-23:20

2 stops35h 20m

Cairns

Thu 17/9

10:10-15:15

2 stops43h 05m

$2,464

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 29/8

07:00-16:40

2 stops43h 40m

Cairns

Sat 5/9

06:50-22:06

2 stops29h 16m

$2,768

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 29/8

07:00-11:50

2 stops38h 50m

Cairns

Wed 2/9

06:50-19:42

2 stops26h 52m

$2,896
Fastest return journey

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Wed 2/9

16:15-11:10

2 stops28h 55m

Cairns

Wed 9/9

06:00-23:59

3 stops31h 59m

$3,275

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Tue 1/9

17:01-11:10

3 stops52h 09m

Cairns

Tue 8/9

06:00-23:59

3 stops31h 59m

$3,315

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Cairns from

How to get the cheapest flight ticket from Boston to Cairns

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Boston Logan Intl to Cairns?

United Airlines is the most popular carrier operating from Boston Logan Intl to Cairns

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

Best price found

$1,046

Fastest flight time

27h 50m

Direct flights

None
The best one-way flight to Cairns from Boston in the past 72 hours is $1,046. The best return flight deal from Boston to Cairns found on momondo in the last 72 hours is $2,041.
The fastest flight from Boston to Cairns takes 27h 50m
There are no direct flights from Boston to Cairns. There are no popular flight routes from Boston to Cairns.
Search flight deals

Frequently asked questions about flying from Boston to Cairns

  • 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 27h 50m, 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.

Travelling to a place near Cairns?

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