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Cheap flights from Boston to Cairns from $975

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 3/8. 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.
American Airlines Logo
14:25 - 11:05
BOS
-
CNS
29h 40m
2 stops
American Airlines Logo
06:00 - 21:18
CNS
-
BOS
30h 18m
2 stops
$2,085American Airlines
Wed, 11 Nov - Thu, 19 Nov
American Airlines Logo
16:27 - 12:55
BOS
-
CNS
30h 28m
2 stops
American Airlines Logo
13:55 - 08:13
CNS
-
BOS
32h 18m
2 stops
$2,093American Airlines
Mon, 7 Sep - Thu, 17 Sep
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
$2,095American Airlines
Mon, 7 Sep - Thu, 17 Sep
United Airlines Logo
05:45 - 23:55
BOS
-
CNS
51h 10m
3 stops
United Airlines Logo
06:00 - 23:21
CNS
-
BOS
32h 21m
2 stops
$2,145United Airlines
Wed, 11 Nov - Wed, 18 Nov
United Airlines Logo
08:05 - 14:00
BOS
-
CNS
38h 55m
2 stops
United Airlines Logo
06:00 - 19:19
CNS
-
BOS
28h 19m
2 stops
$2,148United Airlines
Mon, 9 Nov - Wed, 18 Nov
United Airlines Logo
05:45 - 14:55
BOS
-
CNS
42h 10m
3 stops
United Airlines Logo
06:00 - 23:40
CNS
-
BOS
32h 40m
3 stops
$2,155United Airlines
Mon, 9 Nov - Wed, 18 Nov
United Airlines Logo
17:16 - 14:55
BOS
-
CNS
54h 39m
2 stops
United Airlines Logo
06:00 - 21:24
CNS
-
BOS
30h 24m
2 stops
$2,170United Airlines
Sun, 8 Nov - Mon, 16 Nov
United Airlines Logo
05:45 - 23:55
BOS
-
CNS
51h 10m
3 stops
United Airlines Logo
06:00 - 23:21
CNS
-
BOS
32h 21m
2 stops
$2,217United Airlines
Wed, 11 Nov - Sat, 21 Nov
United Airlines Logo
18:01 - 14:00
BOS
-
CNS
28h 59m
2 stops
United Airlines Logo
06:00 - 23:21
CNS
-
BOS
32h 21m
2 stops
$2,220United Airlines
Mon, 9 Nov - Fri, 20 Nov
Qantas Airways Logo
16:59 - 12:55
BOS
-
CNS
29h 56m
2 stops
Qantas Airways Logo
12:35 - 23:28
CNS
-
BOS
48h 53m
2 stops
$2,227Qantas Airways
Mon, 7 Sep - Thu, 17 Sep

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American Airlines flights from Boston to Cairns

Our best American Airlines deals on Boston to Cairns flight tickets
American Airlines
11 Nov
BOS14:25Boston Logan Intl
29h 40m
2 stops
CNS11:05Cairns
19 Nov
CNS06:00Cairns
30h 18m
2 stops
BOS21:18Boston Logan Intl
$2,085
American Airlines
7 Sept
BOS16:27Boston Logan Intl
30h 28m
2 stops
CNS12:55Cairns
17 Sept
CNS13:55Cairns
32h 18m
2 stops
BOS08:13Boston Logan Intl
$2,093
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
$2,095

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
11 Nov
BOS05:45Boston Logan Intl
51h 10m
3 stops
CNS23:55Cairns
18 Nov
CNS06:00Cairns
32h 21m
2 stops
BOS23:21Boston Logan Intl
$2,145
United Airlines
9 Nov
BOS08:05Boston Logan Intl
38h 55m
2 stops
CNS14:00Cairns
18 Nov
CNS06:00Cairns
28h 19m
2 stops
BOS19:19Boston Logan Intl
$2,148
United Airlines
9 Nov
BOS05:45Boston Logan Intl
42h 10m
3 stops
CNS14:55Cairns
18 Nov
CNS06:00Cairns
32h 40m
3 stops
BOS23:40Boston Logan Intl
$2,155

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 8 July 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
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 11/11

14:25-11:05

2 stops29h 40m

Cairns

Thu 19/11

06:00-21:18

2 stops30h 18m

$2,085

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

16:27-12:55

2 stops30h 28m

Cairns

Thu 17/9

13:55-08:13

2 stops32h 18m

$2,093

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

$2,095

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 11/11

05:45-23:55

3 stops51h 10m

Cairns

Wed 18/11

06:00-23:21

2 stops32h 21m

$2,145

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/11

08:05-14:00

2 stops38h 55m

Cairns

Wed 18/11

06:00-19:19

2 stops28h 19m

$2,148

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/11

05:45-14:55

3 stops42h 10m

Cairns

Wed 18/11

06:00-23:40

3 stops32h 40m

$2,155

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 8/11

17:16-14:55

2 stops54h 39m

Cairns

Mon 16/11

06:00-21:24

2 stops30h 24m

$2,170

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Wed 11/11

05:45-23:55

3 stops51h 10m

Cairns

Sat 21/11

06:00-23:21

2 stops32h 21m

$2,217

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 9/11

18:01-14:00

2 stops28h 59m

Cairns

Fri 20/11

06:00-23:21

2 stops32h 21m

$2,220

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 7/9

16:59-12:55

2 stops29h 56m

Cairns

Thu 17/9

12:35-23:28

2 stops48h 53m

$2,227

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

39h 55m

Direct flights

None
The fastest flight from Boston to Cairns takes 39h 55m
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 55m, 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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