$730+ Cheap flights from Boston (BOS) to Cairns (CNS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Nov 13 — Nov 201
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Cairns with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Cairns
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Cheapest flights from Boston to CairnsExplore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2026.
Explore the most affordable flight options available from Boston to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2026.
This Jetabroad deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 am -
2 stops40h 45m
Tue 11/36:00 am -
3 stops30h 14m
Deal found 10/9![Multiple Airlines logo]()
$1,643
This BusinessClass deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:45 pm -
2 stops53h 10m
Mon 11/309:45 am -
2 stops46h 20m
Deal found 10/9![Multiple Airlines logo]()
$1,834
This Emirates deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:10 pm -
2 stops45h 45m
Wed 11/113:40 pm -
2 stops37h 15m
Deal found 10/9![Emirates logo]()
$2,010
This FlightHub deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:29 pm -
3 stops33h 21m
Tue 11/36:00 am -
2 stops30h 58m
Deal found 10/12![Qantas Airways logo]()
$2,013
This oojo deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:43 am -
3 stops40h 07m
Mon 11/305:40 pm -
3 stops52h 37m
Deal found 10/9![Air New Zealand logo]()
$2,130
This United Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:32 pm -
3 stops34h 23m
Wed 11/116:00 am -
2 stops28h 19m
Deal found 10/11![United Airlines logo]()
$2,452
Best flights from Boston to CairnsDiscover carefully curated flight deals from Boston to Cairns that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
Discover carefully curated flight deals from Boston to Cairns that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
This Jetabroad deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 am -
2 stops40h 45m
Tue 11/36:00 am -
3 stops30h 14m
Deal found 10/9![Multiple Airlines logo]()
$1,643
This Emirates deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:10 pm -
2 stops45h 45m
Wed 11/113:40 pm -
2 stops37h 15m
Deal found 10/12![Emirates logo]()
$2,093
This United Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:32 pm -
3 stops34h 23m
Wed 11/116:00 am -
3 stops32h 59m
Deal found 10/11![United Airlines logo]()
$2,452
This BusinessClass deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:45 pm -
2 stops53h 10m
Mon 11/309:45 am -
2 stops46h 20m
Deal found 10/9![Multiple Airlines logo]()
$1,834
Last-minute flights from Boston to CairnsDiscover last-minute flight deals from Boston to Cairns. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Cairns. Data last updated October 14, 2026 and is based on user searches.
This Jetabroad deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 am -
2 stops40h 45m
Tue 11/36:00 am -
3 stops30h 14m
Deal found 10/9![Multiple Airlines logo]()
$1,643
This FlightHub deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:29 pm -
3 stops33h 21m
Tue 11/36:00 am -
2 stops30h 58m
Deal found 10/12![Qantas Airways logo]()
$2,013
This Emirates deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:10 pm -
2 stops45h 45m
Wed 11/113:40 pm -
2 stops37h 15m
Deal found 10/9![Emirates logo]()
$2,010
This United Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:32 pm -
3 stops34h 23m
Wed 11/116:00 am -
2 stops28h 19m
Deal found 10/11![United Airlines logo]()
$2,452
This BusinessClass deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:45 pm -
2 stops53h 10m
Mon 11/309:45 am -
2 stops46h 20m
Deal found 10/9![Multiple Airlines logo]()
$1,834
This oojo deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:43 am -
3 stops40h 07m
Mon 11/305:40 pm -
3 stops52h 37m
Deal found 10/9![Air New Zealand logo]()
$2,130
One-way flights from Boston to CairnsSearch for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
This Qantas Airways deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/262:21 pm -
2 stops30h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$730
This American Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/262:21 pm -
2 stops30h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![American Airlines logo]()
$739
This oojo deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/266:51 pm -
2 stops49h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Qantas Airways logo]()
$741
This FlightHub deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/272:21 pm -
2 stops30h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Qantas Airways logo]()
$753
This Justfly.com deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:51 pm -
2 stops49h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Qantas Airways logo]()
$775
This United Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/257:30 am -
2 stops39h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![United Airlines logo]()
$780
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:34 am -
3 stops50h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$783
This United Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/246:03 pm -
2 stops29h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![United Airlines logo]()
$784
This Qantas Airways deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/282:21 pm -
2 stops37h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Qantas Airways logo]()
$824
Find flight deals from Boston to Cairns
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Cairns (CNS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,643 (Jetabroad) |
One-way from | $730 (Qantas Airways) |
Cheapflights Fare Finder
Customize 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, Cheapflights users made 7,457,451 searches. Data last updated October 14, 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
Cheapest round-trip
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Tue 1/26
7:30 am-4:40 pm
2 stops42h 10m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$775
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 1/25
6:51 pm-11:50 am
2 stops49h 59m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$775
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 1/25
7:30 am-2:00 pm
2 stops39h 30m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$780
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Wed 1/27
1:48 pm-2:00 pm
2 stops33h 12m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$780
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Fri 12/4
11:34 am-4:35 am
3 stops50h 01m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$783
Quickest round-trip
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sun 1/24
6:03 pm-2:55 pm
2 stops29h 52m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$784
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Fri 12/4
2:20 pm-11:50 am
2 stops30h 30m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$832
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Thu 1/28
9:15 am-2:00 pm
2 stops37h 45m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$840
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 10/26
10:45 am-5:30 pm
2 stops40h 45m
Cairns
Tue 11/3
6:00 am-9:14 pm
3 stops30h 14m
$1,643
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 11/23
6:45 pm-2:55 pm
2 stops53h 10m
Cairns
Mon 11/30
9:45 am-5:05 pm
2 stops46h 20m
$1,834
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from Boston to Cairns
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Cairns in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-Cairns flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Cairns flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Cairns flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Cairns flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Cairns flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Cairns
Have a flexible travel schedule? Discover the best time to fly to Cairns from Boston with our price prediction graph.
BOS-CNS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Boston to Cairns. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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