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Cheap flights from Boston to Cairns from $1,166

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 15/6. 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.
United Airlines Logo
18:10 - 20:20
BOS
-
CNS
36h 10m
2 stops
United Airlines Logo
06:00 - 17:04
CNS
-
BOS
25h 04m
2 stops
$2,146United Airlines
Tue, 7 Jul - Wed, 15 Jul
United Airlines Logo
09:07 - 11:10
BOS
-
CNS
36h 03m
2 stops
United Airlines Logo
06:00 - 17:04
CNS
-
BOS
25h 04m
2 stops
$2,150United Airlines
Sun, 26 Jul - Wed, 5 Aug
United Airlines Logo
20:32 - 11:10
BOS
-
CNS
48h 38m
2 stops
United Airlines Logo
06:00 - 17:04
CNS
-
BOS
25h 04m
2 stops
$2,170United Airlines
Sat, 18 Jul - Wed, 29 Jul
American Airlines Logo
15:00 - 15:00
BOS
-
CNS
34h 00m
2 stops
American Airlines Logo
15:45 - 08:35
CNS
-
BOS
30h 50m
2 stops
$2,184American Airlines
Mon, 29 Jun - Mon, 6 Jul
United Airlines Logo
18:10 - 20:20
BOS
-
CNS
36h 10m
2 stops
United Airlines Logo
06:00 - 17:04
CNS
-
BOS
25h 04m
2 stops
$2,216United Airlines
Wed, 1 Jul - Fri, 10 Jul
United Airlines Logo
18:13 - 11:10
BOS
-
CNS
26h 57m
2 stops
United Airlines Logo
06:00 - 17:07
CNS
-
BOS
25h 07m
2 stops
$2,220United Airlines
Wed, 12 Aug - Fri, 21 Aug
United Airlines Logo
07:28 - 20:20
BOS
-
CNS
46h 52m
2 stops
United Airlines Logo
06:00 - 17:04
CNS
-
BOS
25h 04m
2 stops
$2,236United Airlines
Sat, 4 Jul - Tue, 14 Jul
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
$2,263American Airlines
Wed, 1 Jul - Sat, 11 Jul
Multiple Airlines Logo
22:00 - 09:50
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
10:30 - 15:15
CNS
-
BOS
42h 45m
2 stops
$2,279Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep
Multiple Airlines Logo
22:00 - 09:50
BOS
-
CNS
45h 50m
2 stops
Multiple Airlines Logo
10:30 - 15:15
CNS
-
BOS
42h 45m
2 stops
$2,282Multiple Airlines
Mon, 7 Sep - Thu, 17 Sep

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
7 July
BOS18:10Boston Logan Intl
36h 10m
2 stops
CNS20:20Cairns
15 July
CNS06:00Cairns
25h 04m
2 stops
BOS17:04Boston Logan Intl
$2,146
United Airlines
26 July
BOS09:07Boston Logan Intl
36h 03m
2 stops
CNS11:10Cairns
5 Aug
CNS06:00Cairns
25h 04m
2 stops
BOS17:04Boston Logan Intl
$2,150
United Airlines
18 July
BOS20:32Boston Logan Intl
48h 38m
2 stops
CNS11:10Cairns
29 July
CNS06:00Cairns
25h 04m
2 stops
BOS17:04Boston Logan Intl
$2,170

Air Canada flights from Boston to Cairns

Our best Air Canada deals on Boston to Cairns flight tickets
Air Canada
28 Aug
BOS06:00Boston Logan Intl
43h 55m
3 stops
CNS15:55Cairns
7 Sept
CNS16:35Cairns
44h 05m
3 stops
BOS22:40Boston Logan Intl
$2,541
Air Canada
27 Aug
BOS19:40Boston Logan Intl
54h 15m
3 stops
CNS15:55Cairns
7 Sept
CNS16:35Cairns
44h 05m
3 stops
BOS22:40Boston Logan Intl
$2,576
Air Canada
20 Aug
BOS19:15Boston Logan Intl
54h 40m
3 stops
CNS15:55Cairns
29 Aug
CNS16:35Cairns
44h 03m
3 stops
BOS22:38Boston Logan Intl
$2,681

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 20 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

Tue 7/7

18:10-20:20

2 stops36h 10m

Cairns

Wed 15/7

06:00-17:04

2 stops25h 04m

$2,146

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 26/7

09:07-11:10

2 stops36h 03m

Cairns

Wed 5/8

06:00-17:04

2 stops25h 04m

$2,150

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 18/7

20:32-11:10

2 stops48h 38m

Cairns

Wed 29/7

06:00-17:04

2 stops25h 04m

$2,170

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 29/6

15:00-15:00

2 stops34h 00m

Cairns

Mon 6/7

15:45-08:35

2 stops30h 50m

$2,184

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 1/7

18:10-20:20

2 stops36h 10m

Cairns

Fri 10/7

06:00-17:04

2 stops25h 04m

$2,216
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 12/8

18:13-11:10

2 stops26h 57m

Cairns

Fri 21/8

06:00-17:07

2 stops25h 07m

$2,220

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sat 4/7

07:28-20:20

2 stops46h 52m

Cairns

Tue 14/7

06:00-17:04

2 stops25h 04m

$2,236

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 1/7

16:29-12:55

2 stops30h 26m

Cairns

Sat 11/7

15:45-08:35

2 stops30h 50m

$2,263

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-09:50

2 stops45h 50m

Cairns

Thu 17/9

10:30-15:15

2 stops42h 45m

$2,279

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

22:00-09:50

2 stops45h 50m

Cairns

Thu 17/9

10:30-15:15

2 stops42h 45m

$2,282

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

36h 40m

Direct flights

None
The fastest flight from Boston to Cairns takes 36h 40m
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 36h 40m, 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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