Cheap flights from Seattle to Sydney

Depart
Return
Any month
Compare vs momondo |

Seattle to Sydney flight comparison made easy

Below you can see the best fares for your route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Sydney by changing tabs
Quickest
Cheapest
China Eastern
China Eastern
05 Nov.
SEA
07:21
Seattle/Tacoma Intl airport
27h 49m
1 Stop
06:10
+2
SYD
Sydney Kingsford Smith airport
China Eastern
17 Nov.
SYD
00:35
Sydney Kingsford Smith airport
37h 26m
1 Stop
19:01
SEA
Seattle/Tacoma Intl airport
1,137 AUD
China Eastern
China Eastern
14 Nov.
SEA
07:21
Seattle/Tacoma Intl airport
27h 49m
1 Stop
06:10
+2
SYD
Sydney Kingsford Smith airport
China Eastern
20 Nov.
SYD
00:35
Sydney Kingsford Smith airport
37h 26m
1 Stop
19:01
SEA
Seattle/Tacoma Intl airport
1,137 AUD
China Eastern
China Eastern
11 Nov.
SEA
07:21
Seattle/Tacoma Intl airport
47h 09m
2 Stops
01:30
+3
SYD
Sydney Kingsford Smith airport
China Eastern
25 Nov.
SYD
00:35
Sydney Kingsford Smith airport
37h 26m
1 Stop
19:01
SEA
Seattle/Tacoma Intl airport
1,185 AUD
Delta
Delta
12 Nov.
SEA
07:10
Seattle/Tacoma Intl airport
22h 00m
1 Stop
00:10
+2
SYD
Sydney Kingsford Smith airport
Delta
29 Nov.
SYD
22:20
Sydney Kingsford Smith airport
23h 34m
1 Stop
02:54
+1
SEA
Seattle/Tacoma Intl airport
2,152 AUD
Air New Zealand
Air New Zealand
13 Feb.
SEA
07:15
Seattle/Tacoma Intl airport
22h 25m
2 Stops
00:40
+2
SYD
Sydney Kingsford Smith airport
Air New Zealand
29 Feb.
SYD
08:40
Sydney Kingsford Smith airport
27h 10m
1 Stop
16:50
SEA
Seattle/Tacoma Intl airport
1,524 AUD
JAL
JAL
11 Nov.
SEA
03:25
Seattle/Tacoma Intl airport
24h 25m
1 Stop
22:50
+1
SYD
Sydney Kingsford Smith airport
JAL
04 Dec.
SYD
20:15
Sydney Kingsford Smith airport
25h 28m
2 Stops
02:43
+1
SEA
Seattle/Tacoma Intl airport
1,856 AUD

How to get the cheapest flight from Seattle to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight for your trip
What is the cheapest month to fly to Sydney?
March
The cheapest time of year to fly to Sydney from Seattle is March. The most expensive is December.
What is the cheapest day to fly to Sydney?
Thursday
The cheapest day of the week is usually Thursday. The most expensive is usually Friday.
When is the cheapest time to fly to Sydney?
at midday
Seattle to Sydney flights are approximately 45% more expensive in the morning than at midday
What is the cheapest airline that flies to Sydney?
Alaska Airlines
Alaska Airlines, United Airlines, and Qantas Airways are the most popular carriers operating from Seattle to Sydney
What is the cheapest route?
Seattle/Tacoma Intl - Sydney Kingsford Smith
Fly from Seattle/Tacoma Intl to Sydney Kingsford Smith for the best Seattle - Sydney flight prices
SEA
Seattle/Tacoma Intl
SYD
Sydney Kingsford Smith
When is the cheapest time to book a flight to Sydney?
49 days before
The cheapest time to buy a flight from Seattle to Sydney is approximately 49 days before departure
60
Days before departure
0

Flight information for Seattle to Sydney

Find info about flight duration, direct flights, and airports for your flight from Seattle to Sydney
Fastest flight time 23h 50m The fastest flight from Seattle to Sydney takes 23h 50m.
Direct flights None There are no direct flights from Seattle to Sydney. Popular non-direct route for this connection is Seattle/Tacoma Intl - Sydney Kingsford Smith.
Airports in Sydney 1 airport There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

Alternative routes for Seattle to Sydney

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Portland to Sydney
Fastest flight time
18h 10m
Cheapest price
1,281 AUD

Flights from Seattle to:

  • Sydney Kingsford Smith
  • New South Wales
  • Australia
  • South Pacific

Flights to Sydney from: