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Cheap flights from Boston to Cairns from $1,535

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 19/7. 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

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Find the cheapest flights from Boston to Cairns

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
22:00 - 09:50
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
13:40 - 15:15
CNS
-
BOS
63h 35m
2 stops
$2,349Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
22:00 - 09:50
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
13:40 - 15:15
CNS
-
BOS
63h 35m
2 stops
$2,350Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Qatar Airways Logo
22:00 - 08:30
BOS
-
CNS
44h 30m
2 stops
Qatar Airways Logo
09:10 - 15:20
CNS
-
BOS
44h 10m
2 stops
$2,429Qatar Airways
Sat, 10 Oct - Sat, 24 Oct
Multiple Airlines Logo
15:00 - 09:20
BOS
-
CNS
52h 20m
2 stops
Multiple Airlines Logo
19:10 - 20:53
CNS
-
BOS
39h 43m
2 stops
$2,496Multiple Airlines
Sun, 14 Jun - Sun, 21 Jun
Multiple Airlines Logo
22:00 - 09:50
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
12:10 - 15:15
CNS
-
BOS
41h 05m
2 stops
$2,503Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
22:00 - 05:30
BOS
-
CNS
41h 30m
2 stops
Multiple Airlines Logo
19:00 - 15:15
CNS
-
BOS
34h 15m
2 stops
$2,612Multiple Airlines
Wed, 1 Jul - Mon, 6 Jul
United Airlines Logo
11:30 - 19:10
BOS
-
CNS
41h 40m
2 stops
United Airlines Logo
06:00 - 23:54
CNS
-
BOS
31h 54m
3 stops
$2,635United Airlines
Sat, 10 Oct - Sat, 24 Oct
American Airlines Logo
16:29 - 12:55
BOS
-
CNS
30h 26m
2 stops
American Airlines Logo
15:45 - 08:35
CNS
-
BOS
30h 50m
2 stops
$2,659American Airlines
Tue, 30 Jun - Mon, 6 Jul
Multiple Airlines Logo
18:11 - 13:40
BOS
-
CNS
29h 29m
2 stops
Multiple Airlines Logo
11:50 - 23:25
CNS
-
BOS
49h 35m
3 stops
$2,716Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
United Airlines Logo
14:03 - 20:20
BOS
-
CNS
40h 17m
2 stops
United Airlines Logo
06:00 - 20:59
CNS
-
BOS
28h 59m
2 stops
$2,788United Airlines
Sat, 19 Sep - Wed, 23 Sep

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
10 Oct
BOS11:30Boston Logan Intl
41h 40m
2 stops
CNS19:10Cairns
24 Oct
CNS06:00Cairns
31h 54m
3 stops
BOS23:54Boston Logan Intl
$2,635
United Airlines
19 Sept
BOS18:11Boston Logan Intl
36h 09m
2 stops
CNS20:20Cairns
23 Sept
CNS06:00Cairns
31h 54m
3 stops
BOS23:54Boston Logan Intl
$2,788
United Airlines
19 Sept
BOS11:35Boston Logan Intl
42h 45m
2 stops
CNS20:20Cairns
23 Sept
CNS06:00Cairns
31h 54m
3 stops
BOS23:54Boston Logan Intl
$2,790

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
7 Sept
BOS11:53Boston Logan Intl
35h 47m
3 stops
CNS13:40Cairns
17 Sept
CNS06:50Cairns
51h 41m
2 stops
BOS20:31Boston Logan Intl
$2,895
Qantas Airways
7 Sept
BOS11:53Boston Logan Intl
35h 47m
3 stops
CNS13:40Cairns
17 Sept
CNS06:50Cairns
51h 41m
2 stops
BOS20:31Boston Logan Intl
$2,958
Qantas Airways
10 July
BOS19:35Boston Logan Intl
55h 20m
2 stops
CNS16:55Cairns
26 July
CNS12:35Cairns
58h 00m
2 stops
BOS08:35Boston Logan Intl
$3,043

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 5 May 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

22:00-09:50

2 stops45h 50m

Cairns

Thu 17/9

13:40-15:15

2 stops63h 35m

$2,349

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-09:50

2 stops45h 50m

Cairns

Thu 17/9

13:40-15:15

2 stops63h 35m

$2,350

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 10/10

22:00-08:30

2 stops44h 30m

Cairns

Sat 24/10

09:10-15:20

2 stops44h 10m

$2,429

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 14/6

15:00-09:20

2 stops52h 20m

Cairns

Sun 21/6

19:10-20:53

2 stops39h 43m

$2,496

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-09:50

2 stops45h 50m

Cairns

Thu 17/9

12:10-15:15

2 stops41h 05m

$2,503

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 1/7

22:00-05:30

2 stops41h 30m

Cairns

Mon 6/7

19:00-15:15

2 stops34h 15m

$2,612

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 10/10

11:30-19:10

2 stops41h 40m

Cairns

Sat 24/10

06:00-23:54

3 stops31h 54m

$2,635
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 30/6

16:29-12:55

2 stops30h 26m

Cairns

Mon 6/7

15:45-08:35

2 stops30h 50m

$2,659

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

18:11-13:40

2 stops29h 29m

Cairns

Thu 17/9

11:50-23:25

3 stops49h 35m

$2,716

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 19/9

14:03-20:20

2 stops40h 17m

Cairns

Wed 23/9

06:00-20:59

2 stops28h 59m

$2,788

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?

American Airlines and Qantas Airways 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

38h 15m

Direct flights

None
The fastest flight from Boston to Cairns takes 38h 15m
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 38h 15m, 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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