
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,222 (Expedia) |
One-way from | $683 (Expedia) |
Popular in | December |
Cheapest in | September |
Average price | $1,496 |
Fly from
Fly to
Route
Depart
Return
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Wed 7/1
6:26 pm-7:00 am
1 stop22h 34m
Sydney Kingsford Smith
Wed 7/8
10:20 am-6:59 pm
1 stop22h 39m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Sun 6/28
5:45 am-7:00 am
2 stops35h 15m
Sydney Kingsford Smith
Sun 7/5
9:30 am-11:19 pm
2 stops27h 49m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Tue 6/30
6:26 pm-7:00 am
1 stop22h 34m
Sydney Kingsford Smith
Tue 7/7
10:20 am-7:14 pm
2 stops22h 54m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Sun 8/23
6:00 am-6:55 am
1 stop34h 55m
Sydney Kingsford Smith
Mon 9/7
9:30 am-9:59 pm
2 stops26h 29m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Thu 8/13
11:34 am-6:55 am
1 stop29h 21m
Sydney Kingsford Smith
Sun 8/30
9:30 am-9:59 pm
2 stops26h 29m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Mon 6/22
4:15 pm-6:55 am
1 stop24h 40m
Sydney Kingsford Smith
Sat 7/4
10:20 am-7:21 pm
1 stop23h 01m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Mon 6/15
5:45 am-7:00 am
2 stops35h 15m
Sydney Kingsford Smith
Sun 6/21
10:20 am-1:11 am
1 stop28h 51m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Tue 7/14
7:30 am-6:55 am
2 stops33h 25m
Sydney Kingsford Smith
Tue 7/21
9:30 am-9:56 pm
2 stops26h 26m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Thu 7/9
9:05 am-6:50 am
2 stops31h 45m
Sydney Kingsford Smith
Sat 7/18
9:15 am-11:36 pm
2 stops28h 21m
BostonSydney
BOS - SYD
BOSSYD
Boston Logan Intl
Sat 6/27
6:26 pm-7:00 am
1 stop22h 34m
Sydney Kingsford Smith
Thu 7/2
9:30 am-1:11 am
2 stops29h 41m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars |
To ensure you get the cheapest price possible for a flight from Boston to Sydney, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, September is the cheapest month in which you can book a flight from Boston to Sydney (average of $1,215). Flying from Boston to Sydney in December is currently the most expensive (average of $1,979). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Houston (IAH) – chosen by Cheapflights users on 33% of 1-stop itineraries from Boston to Sydney on Cheapflights.
Los Angeles (LAX) is the most affordable 1-stop option, with an average round-trip price of $1,238.
Flights via Los Angeles (LAX) have the shortest average one-way travel time for 1-stop routes: 22h 33m.
Flights via Los Angeles (LAX) offer the fastest connection on this route, with an average layover time of 1h 21m.
Food
Boarding
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,May 2026
SEA - KOA
Food
Boarding
Comfort
Entertainment
Overall
Crew
Reviews
Anonymous,May 2026
SEA - KOA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$251 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$318 | Average$1,451 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$727 | Average$793 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$907 | Average$1,363 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,082 | Average$1,443 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,145 | Average$1,559 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,147 | Average$1,453 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,166 | Average$1,478 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,233 | Average$1,558 | FlexibilityNo cancel fee | On-time68% |