$812+ Cheap flights from Boston (BOS) to Cairns (CNS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Sep 21 — Sep 281
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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Best
Last-minute
One-way
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 August 22, 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 August 22, 2026.
This Qantas Airways deal was found by Cheapflights users on 8/21. 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.
Sun 11/87:00 am -
2 stops36h 30m
Wed 11/119:15 am -
2 stops29h 33m
Deal found 8/21![Qantas Airways logo]()
$1,612
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/710:40 am -
2 stops27h 50m
Thu 9/177:15 pm -
3 stops41h 25m
Deal found 8/21![Multiple Airlines logo]()
$1,624
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 10/511:00 am -
2 stops34h 55m
Mon 10/1212:40 pm -
2 stops33h 37m
Deal found 8/21![American Airlines logo]()
$1,715
This Bravofly deal was found by Cheapflights users on 8/18. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:30 am -
2 stops49h 00m
Fri 10/93:45 pm -
2 stops38h 54m
Deal found 8/18![Qantas Airways logo]()
$1,744
This KAYAK deal was found by Cheapflights users on 8/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 am -
2 stops43h 40m
Sat 9/512:35 pm -
2 stops49h 09m
Deal found 8/18![Qantas Airways logo]()
$1,809
This oojo deal was found by Cheapflights users on 8/20. 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.
Sun 10/46:30 am -
2 stops39h 25m
Sun 10/116:50 am -
2 stops28h 26m
Deal found 8/20![Qantas Airways logo]()
$1,879
This United Airlines deal was found by Cheapflights users on 8/20. 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 10/47:55 am -
3 stops37h 15m
Sun 10/116:00 am -
2 stops30h 57m
Deal found 8/20![United Airlines logo]()
$1,965
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 August 22, 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 August 22, 2026.
This Qantas Airways deal was found by Cheapflights users on 8/21. 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.
Sun 11/87:00 am -
2 stops36h 30m
Wed 11/119:15 am -
2 stops29h 33m
Deal found 8/21![Qantas Airways logo]()
$1,612
This Air Canada deal was found by Cheapflights users on 8/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/710:40 am -
2 stops27h 50m
Thu 9/177:15 pm -
3 stops41h 25m
Deal found 8/17![Multiple Airlines logo]()
$1,671
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 10/511:00 am -
2 stops34h 55m
Mon 10/1212:40 pm -
2 stops33h 37m
Deal found 8/21![American Airlines logo]()
$1,715
This United Airlines deal was found by Cheapflights users on 8/20. 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 10/47:55 am -
3 stops37h 15m
Sun 10/116:00 am -
2 stops30h 57m
Deal found 8/20![United Airlines logo]()
$1,965
This KAYAK deal was found by Cheapflights users on 8/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 am -
2 stops43h 40m
Sat 9/512:35 pm -
2 stops49h 09m
Deal found 8/18![Qantas Airways logo]()
$1,809
This United Airlines deal was found by Cheapflights users on 8/20. 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 8/20![United Airlines logo]()
$2,010
This oojo deal was found by Cheapflights users on 8/20. 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.
Sun 10/46:30 am -
2 stops39h 25m
Sun 10/116:50 am -
2 stops28h 26m
Deal found 8/20![Qantas Airways logo]()
$1,879
Last-minute flights from Boston to CairnsDiscover last-minute flight deals from Boston to Cairns. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Cairns. Data last updated August 22, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 8/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 am -
2 stops43h 40m
Sat 9/512:35 pm -
2 stops49h 09m
Deal found 8/18![Qantas Airways logo]()
$1,809
This Air Canada deal was found by Cheapflights users on 8/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:50 pm -
2 stops43h 40m
Sat 9/57:10 pm -
3 stops41h 28m
Deal found 8/21![Multiple Airlines logo]()
$2,199
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 August 22, 2026.
Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This United Airlines deal was found by Cheapflights users on 8/21. 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 10/126:00 am -
2 stops39h 10m
Deal found 8/21![United Airlines logo]()
$812
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Mon 9/1411:36 am -
3 stops44h 49m
Deal found 8/18![Multiple Airlines logo]()
$874
This United deal was found by Cheapflights users on 8/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/255:56 pm -
2 stops34h 09m
Deal found 8/19![Multiple Airlines logo]()
$1,079
This Air Canada deal was found by Cheapflights users on 8/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:00 am -
3 stops41h 40m
Deal found 8/19![Multiple Airlines logo]()
$1,237
This KAYAK deal was found by Cheapflights users on 8/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/121:00 pm -
1 stop25h 30m
Deal found 8/22![Japan Airlines logo]()
$7,347
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,612 (Qantas Airways) |
One-way from | $812 (United Airlines) |
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 August 22, 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
Quickest round-trip
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sun 11/8
7:00 am-10:30 am
2 stops36h 30m
Cairns
Wed 11/11
9:15 am-11:48 pm
2 stops29h 33m
$1,612
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 9/7
10:40 am-4:30 am
2 stops27h 50m
Cairns
Thu 9/17
7:15 pm-10:40 pm
3 stops41h 25m
$1,671
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 10/5
11:00 am-11:55 am
2 stops34h 55m
Cairns
Mon 10/12
12:40 pm-8:17 am
2 stops33h 37m
$1,715
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sat 8/29
7:00 am-4:40 pm
2 stops43h 40m
Cairns
Sat 9/5
12:35 pm-11:44 pm
2 stops49h 09m
$1,809
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sun 10/4
6:30 am-11:55 am
2 stops39h 25m
Cairns
Sun 10/11
6:50 am-9:16 pm
2 stops28h 26m
$1,879
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sun 10/4
7:55 am-11:10 am
3 stops37h 15m
Cairns
Sun 10/11
6:00 am-10:57 pm
2 stops30h 57m
$1,965
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sun 11/8
1:32 pm-2:55 pm
3 stops34h 23m
Cairns
Wed 11/11
6:00 am-11:59 pm
3 stops32h 59m
$2,010
Cheapest one-way
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 10/12
6:00 am-11:10 am
2 stops39h 10m
$812
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 9/14
11:36 am-10:25 pm
3 stops44h 49m
$874
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Fri 12/25
5:56 pm-7:05 pm
2 stops34h 09m
$1,079
Showing 1-10 of 11 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 August.
| 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
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