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Cheap flights from Boston to Cairns from $1,096

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 23/8. 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.
Multiple Airlines Logo
18:00 - 16:40BOS  Boston Logan Intl-CNS Cairns
31h 40m2 stops San Francisco Brisbane
Multiple Airlines Logo
06:00 - 23:54CNS  Cairns-BOS Boston Logan Intl
32h 54m3 stops Brisbane San Francisco Washington, D.C. Dulles Intl
$2,108Multiple Airlines
Tue, 9 Feb - Tue, 16 Feb
Multiple Airlines Logo
11:05 - 17:25BOS  Boston Logan Intl-CNS Cairns
39h 20m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith
Multiple Airlines Logo
18:05 - 22:37CNS  Cairns-BOS Boston Logan Intl
43h 32m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$2,119Multiple Airlines
Tue, 9 Feb - Tue, 16 Feb
Qantas Airways Logo
16:59 - 12:55BOS  Boston Logan Intl-CNS Cairns
29h 56m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
13:40 - 19:52CNS  Cairns-BOS Boston Logan Intl
44h 12m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$2,304Qantas Airways
Mon, 7 Sep - Thu, 17 Sep
Qantas Airways Logo
16:59 - 12:55BOS  Boston Logan Intl-CNS Cairns
29h 56m2 stops Los Angeles Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
06:50 - 21:27CNS  Cairns-BOS Boston Logan Intl
28h 37m2 stops Sydney Kingsford Smith Dallas/Fort Worth
$2,310Qantas Airways
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
19:10 - 09:55CNS  Cairns-BOS Boston Logan Intl
52h 45m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl
$2,311Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
10:04 - 11:50BOS  Boston Logan Intl-CNS Cairns
35h 46m3 stops Orlando Los Angeles Los Angeles Melbourne
Multiple Airlines Logo
06:50 - 11:47CNS  Cairns-BOS Boston Logan Intl
42h 57m3 stops Sydney Kingsford Smith Los Angeles Los Angeles Atlanta Hartsfield-Jackson
$2,382Multiple Airlines
Sat, 29 Aug - Sat, 5 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
$2,480Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
American Airlines Logo
10:30 - 10:35BOS  Boston Logan Intl-CNS Cairns
34h 05m2 stops Los Angeles Los Angeles Brisbane
American Airlines Logo
15:45 - 07:36CNS  Cairns-BOS Boston Logan Intl
29h 51m2 stops Brisbane Los Angeles Los Angeles
$2,519American Airlines
Sat, 29 Aug - Sat, 5 Sep
American Airlines Logo
10:30 - 10:35BOS  Boston Logan Intl-CNS Cairns
34h 05m2 stops Los Angeles Los Angeles Brisbane
American Airlines Logo
15:45 - 07:36CNS  Cairns-BOS Boston Logan Intl
29h 51m2 stops Brisbane Los Angeles Los Angeles
$2,521American Airlines
Sat, 29 Aug - Sat, 5 Sep
Multiple Airlines Logo
22:00 - 09:30BOS  Boston Logan Intl-CNS Cairns
45h 30m2 stops Doha Hamad Intl Adelaide
Multiple Airlines Logo
19:15 - 15:15CNS  Cairns-BOS Boston Logan Intl
58h 00m2 stops Sydney Kingsford Smith Doha Hamad Intl
$2,576Multiple Airlines
Fri, 4 Sep - Fri, 11 Sep

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Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
7 Sept
BOS16:59Boston Logan Intl
29h 56m
2 stops
CNS12:55Cairns
14 Sept
CNS06:50Cairns
54h 38m
2 stops
BOS23:28Boston Logan Intl
$2,290
Qantas Airways
7 Sept
BOS16:59Boston Logan Intl
29h 56m
2 stops
CNS12:55Cairns
17 Sept
CNS13:40Cairns
44h 12m
2 stops
BOS19:52Boston Logan Intl
$2,304
Qantas Airways
7 Sept
BOS16:59Boston Logan Intl
29h 56m
2 stops
CNS12:55Cairns
17 Sept
CNS06:50Cairns
28h 37m
2 stops
BOS21:27Boston Logan Intl
$2,310

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
52h 40m
3 stops
BOS09:55Boston Logan Intl
$3,398
Air Canada
7 Sept
BOS06:00Boston Logan Intl
43h 55m
3 stops
CNS15:55Cairns
17 Sept
CNS19:15Cairns
52h 40m
3 stops
BOS09:55Boston Logan Intl
$3,451

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 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

Tue 9/2

18:00-16:40

2 stops31h 40m

Cairns

Tue 16/2

06:00-23:54

3 stops32h 54m

$2,108

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Tue 9/2

11:05-17:25

3 stops39h 20m

Cairns

Tue 16/2

18:05-22:37

3 stops43h 32m

$2,119

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

13:40-19:52

2 stops44h 12m

$2,304
Fastest return journey

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

06:50-21:27

2 stops28h 37m

$2,310

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

19:10-09:55

3 stops52h 45m

$2,311

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 29/8

10:04-11:50

3 stops35h 46m

Cairns

Sat 5/9

06:50-11:47

3 stops42h 57m

$2,382

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

$2,480

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 29/8

10:30-10:35

2 stops34h 05m

Cairns

Sat 5/9

15:45-07:36

2 stops29h 51m

$2,519

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Sat 29/8

10:30-10:35

2 stops34h 05m

Cairns

Sat 5/9

15:45-07:36

2 stops29h 51m

$2,521

BostonCairns

BOS Boston Logan Intl - CNS Cairns

BOSCNS

Boston Logan Intl

Fri 4/9

22:00-09:30

2 stops45h 30m

Cairns

Fri 11/9

19:15-15:15

2 stops58h 00m

$2,576

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

Fastest flight time

35h 20m

Direct flights

None
The fastest flight from Boston to Cairns takes 35h 20m
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 35h 20m, 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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