Earn point on your loyalty program!arrow arc left

Cheap flights from Boston (BOS) to Cairns (CNS)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Boston (BOS) to Cairns (CNS)

How to find the cheapest flight from Boston (BOS) to Cairns (CNS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Cairns (CNS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Cairns (CNS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Boston to Cairns in March , April 2026

05 Mar - 20 Apr $ 1,367.00
BOS
Boston
Spirit Airlines
3 STOPS
CNS
Cairns
CNS
Cairns
Spirit Airlines
3 STOPS
BOS
Boston
Pick dates
11 Mar - 20 Apr $ 1,412.00
BOS
Boston
Spirit Airlines
3 STOPS
CNS
Cairns
CNS
Cairns
Spirit Airlines
3 STOPS
BOS
Boston
Pick dates
23 Mar - 20 Apr $ 1,413.00
BOS
Boston
Spirit Airlines
3 STOPS
CNS
Cairns
CNS
Cairns
Spirit Airlines
3 STOPS
BOS
Boston
Pick dates

Last minute flights from Boston to Cairns

05 Mar - 01 Apr $ 1,595.00
BOS
Boston
Spirit Airlines
3 STOPS
CNS
Cairns
CNS
Cairns
Spirit Airlines
3 STOPS
BOS
Boston
Pick dates
11 Mar - 01 Apr $ 1,636.00
BOS
Boston
Spirit Airlines
3 STOPS
CNS
Cairns
CNS
Cairns
Spirit Airlines
3 STOPS
BOS
Boston
Pick dates
23 Mar - 01 Apr $ 1,637.00
BOS
Boston
Spirit Airlines
3 STOPS
CNS
Cairns
CNS
Cairns
Spirit Airlines
3 STOPS
BOS
Boston
Pick dates

One-way flights to Cairns from Boston

8:26 AM - 8:25 AM
Qantas
2 Stops
35h 19m
BOS - CNS
$ 690
Kiwi
Pick dates
4:04 PM - 8:35 AM
Qantas
2 Stops
27h 56m
BOS - CNS
$ 969
Kiwi
Pick dates
9:00 AM - 11:40 AM
Qantas
2 Stops
38h 5m
BOS - CNS
$ 2,505
Kiwi
Pick dates

How to find the cheapest flight from Boston (BOS) to Cairns (CNS)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Cairns (CNS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Boston (BOS) to Cairns (CNS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.