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Cheap flights from Boston to Cairns from $894

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 3/9. 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
14:32 - 12:55
BOS
-
CNS
32h 23m
2 stops
American Airlines Logo
13:55 - 08:13
CNS
-
BOS
32h 18m
2 stops
$2,106American Airlines
Mon, 7 Sep - Thu, 17 Sep
American Airlines Logo
16:59 - 12:55
BOS
-
CNS
29h 56m
2 stops
American Airlines Logo
13:55 - 08:13
CNS
-
BOS
32h 18m
2 stops
$2,108American Airlines
Mon, 7 Sep - Thu, 17 Sep
American Airlines Logo
16:59 - 12:55
BOS
-
CNS
29h 56m
2 stops
American Airlines Logo
13:55 - 08:13
CNS
-
BOS
32h 18m
2 stops
$2,109American Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
07:00 - 22:25
BOS
-
CNS
49h 25m
2 stops
Multiple Airlines Logo
20:10 - 23:28
CNS
-
BOS
41h 18m
2 stops
$2,182Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
18:13 - 13:40
BOS
-
CNS
29h 27m
2 stops
Multiple Airlines Logo
19:10 - 17:07
CNS
-
BOS
35h 57m
2 stops
$2,311Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
06:30 - 15:00
BOS
-
CNS
42h 30m
2 stops
Multiple Airlines Logo
21:40 - 23:28
CNS
-
BOS
39h 48m
2 stops
$2,376Multiple Airlines
Wed, 9 Sep - Tue, 15 Sep
Multiple Airlines Logo
10:30 - 11:15
BOS
-
CNS
34h 45m
2 stops
Multiple Airlines Logo
19:10 - 21:27
CNS
-
BOS
40h 17m
2 stops
$2,408Multiple Airlines
Tue, 15 Sep - Mon, 21 Sep
Multiple Airlines Logo
11:53 - 18:25
BOS
-
CNS
40h 32m
3 stops
Multiple Airlines Logo
06:45 - 19:52
CNS
-
BOS
27h 07m
2 stops
$2,517Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
10:30 - 15:00
BOS
-
CNS
38h 30m
2 stops
Multiple Airlines Logo
21:40 - 23:28
CNS
-
BOS
39h 48m
2 stops
$2,521Multiple Airlines
Sat, 12 Sep - Fri, 18 Sep
Multiple Airlines Logo
12:30 - 13:40
BOS
-
CNS
35h 10m
3 stops
Multiple Airlines Logo
19:10 - 09:55
CNS
-
BOS
52h 45m
3 stops
$2,524Multiple Airlines
Wed, 9 Sep - Tue, 15 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
21 July
BOS10:40Boston Logan Intl
34h 30m
3 stops
CNS11:10Cairns
25 July
CNS19:15Cairns
40h 12m
3 stops
BOS21:27Boston Logan Intl
$3,845
Air Canada
22 July
BOS15:35Boston Logan Intl
29h 35m
3 stops
CNS11:10Cairns
29 Oct
CNS06:00Cairns
29h 28m
3 stops
BOS21:28Boston Logan Intl
$4,425

American Airlines flights from Boston to Cairns

Our best American Airlines deals on Boston to Cairns flight tickets
American Airlines
7 Sept
BOS14:32Boston Logan Intl
32h 23m
2 stops
CNS12:55Cairns
17 Sept
CNS13:55Cairns
32h 18m
2 stops
BOS08:13Boston Logan Intl
$2,106
American Airlines
7 Sept
BOS16:59Boston Logan Intl
29h 56m
2 stops
CNS12:55Cairns
17 Sept
CNS13:55Cairns
32h 18m
2 stops
BOS08:13Boston Logan Intl
$2,108
American Airlines
7 Sept
BOS16:59Boston Logan Intl
29h 56m
2 stops
CNS12:55Cairns
17 Sept
CNS13:55Cairns
32h 18m
2 stops
BOS08:13Boston Logan Intl
$2,109

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 27 June 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 - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

14:32-12:55

2 stops32h 23m

Cairns

Thu 17/9

13:55-08:13

2 stops32h 18m

$2,106
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

13:55-08:13

2 stops32h 18m

$2,108

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

13:55-08:13

2 stops32h 18m

$2,109

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

07:00-22:25

2 stops49h 25m

Cairns

Thu 17/9

20:10-23:28

2 stops41h 18m

$2,182

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

18:13-13:40

2 stops29h 27m

Cairns

Thu 17/9

19:10-17:07

2 stops35h 57m

$2,311

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 9/9

06:30-15:00

2 stops42h 30m

Cairns

Tue 15/9

21:40-23:28

2 stops39h 48m

$2,376

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 15/9

10:30-11:15

2 stops34h 45m

Cairns

Mon 21/9

19:10-21:27

2 stops40h 17m

$2,408

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

11:53-18:25

3 stops40h 32m

Cairns

Thu 17/9

06:45-19:52

2 stops27h 07m

$2,517

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 12/9

10:30-15:00

2 stops38h 30m

Cairns

Fri 18/9

21:40-23:28

2 stops39h 48m

$2,521

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 9/9

12:30-13:40

3 stops35h 10m

Cairns

Tue 15/9

19:10-09:55

3 stops52h 45m

$2,524

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?

Qantas Airways, United Airlines, and American Airlines are the most popular carriers 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

39h 10m

Direct flights

None
The fastest flight from Boston to Cairns takes 39h 10m
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 39h 10m, 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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