$805+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CNS
Dec 10 — Dec 171
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 November 10, 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 November 10, 2026.
This Justfly.com deal was found by Cheapflights users on 11/10. 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.
Wed 11/112:25 pm -
2 stops33h 30m
Wed 11/1811:40 am -
2 stops34h 07m
Deal found 11/10![Qantas Airways logo]()
$1,461
This Qantas Airways deal was found by Cheapflights users on 11/10. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:30 pm -
3 stops30h 00m
Wed 11/1811:40 am -
2 stops34h 07m
Deal found 11/10![Multiple Airlines logo]()
$2,253
This BusinessClass deal was found by Cheapflights users on 11/6. 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 12/217:00 pm -
2 stops57h 15m
Mon 12/286:50 am -
2 stops30h 00m
Deal found 11/6![Qantas Airways logo]()
$2,958
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/215:50 pm -
2 stops30h 05m
Mon 12/286:00 am -
3 stops32h 59m
Deal found 11/6![United Airlines logo]()
$3,926
This oojo deal was found by Cheapflights users on 11/6. 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 12/212:42 pm -
3 stops35h 33m
Mon 12/286:20 pm -
3 stops37h 15m
Deal found 11/6![Multiple Airlines logo]()
$4,017
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 November 10, 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 November 10, 2026.
This Qantas Airways deal was found by Cheapflights users on 11/7. 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 5/99:05 am -
2 stops47h 45m
Wed 5/129:25 am -
2 stops26h 51m
Deal found 11/7![Qantas Airways logo]()
$1,825
This Qatar Airways deal was found by Cheapflights users on 11/10. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/75:58 am -
3 stops38h 07m
Wed 1/273:45 pm -
2 stops61h 10m
Deal found 11/10![Qatar Airways logo]()
$1,927
This Qatar Airways deal was found by Cheapflights users on 11/10. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/75:45 am -
3 stops46h 20m
Wed 1/279:45 am -
3 stops67h 10m
Deal found 11/10![Multiple Airlines logo]()
$2,017
This United Airlines deal was found by Cheapflights users on 11/7. 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 5/91:30 pm -
3 stops31h 45m
Wed 5/126:00 am -
3 stops31h 54m
Deal found 11/7![United Airlines logo]()
$2,093
This FlightHub deal was found by Cheapflights users on 11/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/72:21 pm -
2 stops32h 14m
Wed 1/276:40 am -
2 stops30h 16m
Deal found 11/10![Qantas Airways logo]()
$2,104
This BusinessClass deal was found by Cheapflights users on 11/6. 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 12/217:00 pm -
2 stops57h 15m
Mon 12/286:50 am -
2 stops30h 00m
Deal found 11/6![Qantas Airways logo]()
$2,958
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/215:50 pm -
2 stops30h 05m
Mon 12/286:00 am -
3 stops32h 59m
Deal found 11/6![United Airlines logo]()
$3,926
This BYOjet deal was found by Cheapflights users on 11/8. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/52:46 pm -
3 stops35h 29m
Tue 1/126:20 pm -
3 stops37h 44m
Deal found 11/8![Multiple Airlines logo]()
$4,055
Last-minute flights from Boston to CairnsDiscover last-minute flight deals from Boston to Cairns. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Cairns. Data last updated November 10, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 11/10. 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.
Wed 11/112:25 pm -
2 stops33h 30m
Wed 11/1811:40 am -
2 stops34h 07m
Deal found 11/10![Qantas Airways logo]()
$1,461
This Qantas Airways deal was found by Cheapflights users on 11/10. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:30 pm -
3 stops30h 00m
Wed 11/1811:40 am -
2 stops34h 07m
Deal found 11/10![Multiple Airlines logo]()
$2,253
This BusinessClass deal was found by Cheapflights users on 11/6. 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 12/217:00 pm -
2 stops57h 15m
Mon 12/286:50 am -
2 stops30h 00m
Deal found 11/6![Qantas Airways logo]()
$2,958
This United Airlines deal was found by Cheapflights users on 11/6. 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 12/215:50 pm -
2 stops30h 05m
Mon 12/286:00 am -
3 stops32h 59m
Deal found 11/6![United Airlines logo]()
$3,926
This oojo deal was found by Cheapflights users on 11/6. 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 12/212:42 pm -
3 stops35h 33m
Mon 12/286:20 pm -
3 stops37h 15m
Deal found 11/6![Multiple Airlines logo]()
$4,017
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 November 10, 2026.
Search for one-way flight options from Boston to Cairns. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
This Expedia deal was found by Cheapflights users on 11/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/258:53 am -
2 stops41h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Multiple Airlines logo]()
$805
This Qantas Airways deal was found by Cheapflights users on 11/8. 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.
Mon 12/287:00 pm -
2 stops51h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Qantas Airways logo]()
$1,041
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Tue 12/296:00 am -
3 stops38h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$1,099
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 12/2511:45 am -
3 stops43h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$1,296
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 12/288:40 pm -
3 stops42h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$1,379
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Thu 12/247:00 am -
3 stops36h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$1,447
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Sun 12/278:40 pm -
2 stops53h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$1,451
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Sat 12/266:00 am -
3 stops38h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$1,501
This oojo deal was found by Cheapflights users on 11/7. 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 12/143:31 pm -
2 stops29h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Qantas Airways logo]()
$1,537
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 12/148:00 pm -
3 stops51h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Multiple Airlines logo]()
$1,542
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 November 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,825 (Qantas Airways) |
One-way from | $805 (Expedia) |
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 November 10, 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
Mon 1/25
8:53 am-5:30 pm
2 stops41h 37m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$805
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 12/28
7:00 pm-1:35 pm
2 stops51h 35m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,041
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Thu 12/24
7:00 am-10:15 am
3 stops36h 15m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,447
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Mon 12/14
3:31 pm-11:50 am
2 stops29h 19m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,537
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Wed 12/23
11:45 am-10:30 am
3 stops31h 45m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,588
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Thu 12/24
12:45 pm-9:45 am
2 stops30h 00m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,623
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Wed 12/23
3:57 pm-10:55 am
2 stops51h 58m
Cairns
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,648
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Sun 5/9
9:05 am-10:50 pm
2 stops47h 45m
Cairns
Wed 5/12
9:25 am-10:16 pm
2 stops26h 51m
$1,825
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Thu 1/7
5:58 am-11:05 am
3 stops38h 07m
Cairns
Wed 1/27
3:45 pm-1:55 pm
2 stops61h 10m
$1,927
BostonCairns
BOS Boston Logan Intl - CNS Cairns
BOSCNS
Boston Logan Intl
Thu 1/7
5:45 am-7:05 pm
3 stops46h 20m
Cairns
Wed 1/27
9:45 am-1:55 pm
3 stops67h 10m
$2,017
Showing 1-10 of 17 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 November.
| 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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