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Cheap flights from Boston to Cairns from $906

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 21/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
16:25 - 22:40
BOS
-
CNS
40h 15m
2 stops
Multiple Airlines Logo
21:40 - 14:40
CNS
-
BOS
55h 00m
2 stops
$2,146Multiple Airlines
Fri, 8 May - Mon, 18 May
Qatar Airways Logo
22:00 - 23:20
BOS
-
CNS
35h 20m
2 stops
Qatar Airways Logo
16:55 - 15:15
CNS
-
BOS
36h 20m
2 stops
$2,149Qatar Airways
Mon, 7 Sep - Thu, 17 Sep
Qatar Airways Logo
22:00 - 23:20
BOS
-
CNS
35h 20m
2 stops
Qatar Airways Logo
16:55 - 15:15
CNS
-
BOS
36h 20m
2 stops
$2,151Qatar Airways
Mon, 7 Sep - Thu, 17 Sep
Qatar Airways Logo
22:00 - 23:20
BOS
-
CNS
35h 20m
2 stops
Qatar Airways Logo
16:55 - 15:15
CNS
-
BOS
36h 20m
2 stops
$2,152Qatar Airways
Mon, 7 Sep - Thu, 17 Sep
Qatar Airways Logo
22:00 - 23:20
BOS
-
CNS
35h 20m
2 stops
Qatar Airways Logo
16:55 - 15:15
CNS
-
BOS
36h 20m
2 stops
$2,201Qatar Airways
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
12:30 - 13:40
BOS
-
CNS
35h 10m
3 stops
Multiple Airlines Logo
19:10 - 09:54
CNS
-
BOS
52h 44m
3 stops
$2,230Multiple Airlines
Fri, 8 May - Mon, 18 May
Qantas Airways Logo
07:00 - 10:35
BOS
-
CNS
37h 35m
2 stops
Qantas Airways Logo
13:40 - 21:01
CNS
-
BOS
45h 21m
2 stops
$2,331Qantas Airways
Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
12:30 - 13:40
BOS
-
CNS
35h 10m
3 stops
Multiple Airlines Logo
19:10 - 09:54
CNS
-
BOS
52h 44m
3 stops
$2,333Multiple Airlines
Thu, 7 May - Thu, 14 May
Qantas Airways Logo
07:00 - 15:00
BOS
-
CNS
42h 00m
2 stops
Qantas Airways Logo
11:20 - 19:30
CNS
-
BOS
46h 10m
3 stops
$2,339Qantas Airways
Tue, 5 May - Tue, 12 May
Qantas Airways Logo
17:54 - 16:55
BOS
-
CNS
33h 01m
3 stops
Qantas Airways Logo
11:20 - 19:30
CNS
-
BOS
46h 10m
3 stops
$2,390Qantas Airways
Tue, 5 May - Tue, 12 May

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
5 May
BOS07:00Boston Logan Intl
37h 35m
2 stops
CNS10:35Cairns
12 May
CNS13:40Cairns
45h 21m
2 stops
BOS21:01Boston Logan Intl
$2,331
Qantas Airways
5 May
BOS07:00Boston Logan Intl
42h 00m
2 stops
CNS15:00Cairns
12 May
CNS11:20Cairns
46h 10m
3 stops
BOS19:30Boston Logan Intl
$2,339
Qantas Airways
5 May
BOS17:54Boston Logan Intl
33h 01m
3 stops
CNS16:55Cairns
12 May
CNS11:20Cairns
46h 10m
3 stops
BOS19:30Boston Logan Intl
$2,390

Qatar Airways flights from Boston to Cairns

Our best Qatar Airways deals on Boston to Cairns flight tickets
Qatar Airways
7 Sept
BOS22:00Boston Logan Intl
35h 20m
2 stops
CNS23:20Cairns
17 Sept
CNS16:55Cairns
36h 20m
2 stops
BOS15:15Boston Logan Intl
$2,149
Qatar Airways
7 Sept
BOS22:00Boston Logan Intl
35h 20m
2 stops
CNS23:20Cairns
17 Sept
CNS16:55Cairns
36h 20m
2 stops
BOS15:15Boston Logan Intl
$2,151
Qatar Airways
7 Sept
BOS22:00Boston Logan Intl
35h 20m
2 stops
CNS23:20Cairns
17 Sept
CNS16:55Cairns
36h 20m
2 stops
BOS15:15Boston Logan Intl
$2,152

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 25 March 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

Fri 8/5

16:25-22:40

2 stops40h 15m

Cairns

Mon 18/5

21:40-14:40

2 stops55h 00m

$2,146
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-23:20

2 stops35h 20m

Cairns

Thu 17/9

16:55-15:15

2 stops36h 20m

$2,149

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-23:20

2 stops35h 20m

Cairns

Thu 17/9

16:55-15:15

2 stops36h 20m

$2,151

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-23:20

2 stops35h 20m

Cairns

Thu 17/9

16:55-15:15

2 stops36h 20m

$2,152

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-23:20

2 stops35h 20m

Cairns

Thu 17/9

16:55-15:15

2 stops36h 20m

$2,201

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Fri 8/5

12:30-13:40

3 stops35h 10m

Cairns

Mon 18/5

19:10-09:54

3 stops52h 44m

$2,230

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/5

07:00-10:35

2 stops37h 35m

Cairns

Tue 12/5

13:40-21:01

2 stops45h 21m

$2,331

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Thu 7/5

12:30-13:40

3 stops35h 10m

Cairns

Thu 14/5

19:10-09:54

3 stops52h 44m

$2,333

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/5

07:00-15:00

2 stops42h 00m

Cairns

Tue 12/5

11:20-19:30

3 stops46h 10m

$2,339

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 5/5

17:54-16:55

3 stops33h 01m

Cairns

Tue 12/5

11:20-19:30

3 stops46h 10m

$2,390

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 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

  • 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
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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