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Cheap flights from Boston to Cairns from $930

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 28/8. 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

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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
18:10 - 14:40
BOS
-
CNS
30h 30m
2 stops
Multiple Airlines Logo
06:00 - 19:02
CNS
-
BOS
27h 02m
2 stops
$2,279Multiple Airlines
Mon, 10 Aug - Wed, 26 Aug
Multiple Airlines Logo
18:10 - 14:40
BOS
-
CNS
30h 30m
2 stops
Multiple Airlines Logo
06:00 - 17:05
CNS
-
BOS
25h 05m
2 stops
$2,296Multiple Airlines
Mon, 10 Aug - Fri, 28 Aug
Multiple Airlines Logo
18:33 - 15:55
BOS
-
CNS
31h 22m
2 stops
Multiple Airlines Logo
06:00 - 19:02
CNS
-
BOS
27h 02m
2 stops
$2,307Multiple Airlines
Tue, 11 Aug - Wed, 26 Aug
Multiple Airlines Logo
18:27 - 14:40
BOS
-
CNS
30h 13m
2 stops
Multiple Airlines Logo
19:10 - 18:59
CNS
-
BOS
37h 49m
2 stops
$2,309Multiple Airlines
Mon, 27 Jul - Sun, 9 Aug
Multiple Airlines Logo
18:00 - 09:20
BOS
-
CNS
49h 20m
2 stops
Multiple Airlines Logo
06:00 - 06:35
CNS
-
BOS
38h 35m
2 stops
$2,323Multiple Airlines
Sun, 31 May - Sun, 7 Jun
Multiple Airlines Logo
18:33 - 15:55
BOS
-
CNS
31h 22m
2 stops
Multiple Airlines Logo
06:00 - 17:05
CNS
-
BOS
25h 05m
2 stops
$2,324Multiple Airlines
Tue, 11 Aug - Fri, 28 Aug
Multiple Airlines Logo
18:10 - 11:15
BOS
-
CNS
27h 05m
2 stops
Multiple Airlines Logo
19:10 - 17:05
CNS
-
BOS
35h 55m
2 stops
$2,337Multiple Airlines
Mon, 10 Aug - Thu, 27 Aug
United Airlines Logo
18:27 - 13:00
BOS
-
CNS
28h 33m
2 stops
United Airlines Logo
06:00 - 23:54
CNS
-
BOS
31h 54m
3 stops
$2,338United Airlines
Mon, 10 Aug - Wed, 26 Aug
United Airlines Logo
13:37 - 11:10
BOS
-
CNS
31h 33m
3 stops
United Airlines Logo
06:00 - 23:54
CNS
-
BOS
31h 54m
3 stops
$2,342United Airlines
Mon, 10 Aug - Wed, 26 Aug
United Airlines Logo
05:45 - 15:55
BOS
-
CNS
44h 10m
3 stops
United Airlines Logo
06:00 - 23:54
CNS
-
BOS
31h 54m
3 stops
$2,348United Airlines
Tue, 11 Aug - Wed, 26 Aug

Qantas Airways flights from Boston to Cairns

Our best Qantas Airways deals on Boston to Cairns flight tickets
Qantas Airways
1 June
BOS12:15Boston Logan Intl
36h 45m
2 stops
CNS15:00Cairns
8 June
CNS18:20Cairns
39h 00m
2 stops
BOS19:20Boston Logan Intl
$2,367
Qantas Airways
4 June
BOS07:35Boston Logan Intl
37h 00m
2 stops
CNS10:35Cairns
11 June
CNS19:10Cairns
39h 28m
2 stops
BOS20:38Boston Logan Intl
$2,422
Qantas Airways
3 Sept
BOS07:00Boston Logan Intl
47h 50m
2 stops
CNS20:50Cairns
7 Sept
CNS18:20Cairns
38h 22m
2 stops
BOS18:42Boston Logan Intl
$2,498

United Airlines flights from Boston to Cairns

Our best United Airlines deals on Boston to Cairns flight tickets
United Airlines
10 Aug
BOS18:27Boston Logan Intl
28h 33m
2 stops
CNS13:00Cairns
26 Aug
CNS06:00Cairns
31h 54m
3 stops
BOS23:54Boston Logan Intl
$2,338
United Airlines
10 Aug
BOS13:37Boston Logan Intl
31h 33m
3 stops
CNS11:10Cairns
26 Aug
CNS06:00Cairns
31h 54m
3 stops
BOS23:54Boston Logan Intl
$2,342
United Airlines
11 Aug
BOS05:45Boston Logan Intl
44h 10m
3 stops
CNS15:55Cairns
26 Aug
CNS06:00Cairns
31h 54m
3 stops
BOS23:54Boston Logan Intl
$2,348

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 April 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 10/8

18:10-14:40

2 stops30h 30m

Cairns

Wed 26/8

06:00-19:02

2 stops27h 02m

$2,279
Fastest return journey

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 10/8

18:10-14:40

2 stops30h 30m

Cairns

Fri 28/8

06:00-17:05

2 stops25h 05m

$2,296

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 11/8

18:33-15:55

2 stops31h 22m

Cairns

Wed 26/8

06:00-19:02

2 stops27h 02m

$2,307

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 27/7

18:27-14:40

2 stops30h 13m

Cairns

Sun 9/8

19:10-18:59

2 stops37h 49m

$2,309

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Sun 31/5

18:00-09:20

2 stops49h 20m

Cairns

Sun 7/6

06:00-06:35

2 stops38h 35m

$2,323

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 11/8

18:33-15:55

2 stops31h 22m

Cairns

Fri 28/8

06:00-17:05

2 stops25h 05m

$2,324

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 10/8

18:10-11:15

2 stops27h 05m

Cairns

Thu 27/8

19:10-17:05

2 stops35h 55m

$2,337

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 10/8

18:27-13:00

2 stops28h 33m

Cairns

Wed 26/8

06:00-23:54

3 stops31h 54m

$2,338

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Mon 10/8

13:37-11:10

3 stops31h 33m

Cairns

Wed 26/8

06:00-23:54

3 stops31h 54m

$2,342

BostonCairns

BOS - CNS

BOSCNS

Boston Logan Intl

Tue 11/8

05:45-15:55

3 stops44h 10m

Cairns

Wed 26/8

06:00-23:54

3 stops31h 54m

$2,348

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 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

29h 29m

Direct flights

None
The fastest flight from Boston to Cairns takes 29h 29m
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 29h 29m, 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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