Cheap flights from Sydney to Seattle from $621
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Seattle departing on 19/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Tue 2/2
13:20-12:22
1 stop18h 02m
Seattle/Tacoma Intl
Tue 9/2
12:30-09:05
2 stops25h 35m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 1/2
13:20-12:22
1 stop18h 02m
Seattle/Tacoma Intl
Mon 8/2
13:18-09:20
1 stop25h 02m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 1/2
10:40-14:45
2 stops23h 05m
Seattle/Tacoma Intl
Mon 8/2
13:30-08:30
2 stops24h 00m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Tue 2/2
13:35-00:11
2 stops29h 36m
Seattle/Tacoma Intl
Wed 10/2
07:20-08:30
1 stop30h 10m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Sun 22/11
21:25-13:54
2 stops35h 29m
Seattle/Tacoma Intl
Mon 23/11
00:55-09:00
2 stops37h 05m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 23/11
11:20-16:12
1 stop23h 52m
Seattle/Tacoma Intl
Mon 30/11
16:39-09:05
1 stop21h 26m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Tue 24/11
11:50-16:27
1 stop23h 37m
Seattle/Tacoma Intl
Tue 1/12
17:28-09:05
1 stop20h 37m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Mon 23/11
11:10-13:23
2 stops45h 13m
Seattle/Tacoma Intl
Tue 1/12
06:20-09:00
2 stops31h 40m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Wed 11/11
11:10-15:54
1 stop23h 44m
Seattle/Tacoma Intl
Wed 18/11
13:35-09:00
1 stop24h 25m
SydneySeattle
SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl
SYDSEA
Sydney Kingsford Smith
Wed 11/11
11:10-16:54
2 stops24h 44m
Seattle/Tacoma Intl
Wed 18/11
13:35-09:00
1 stop24h 25m
See travel insights to Seattle from
How to get the cheapest flight ticket from Sydney to Seattle
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 ticket for your trip
What is the typical price of a round-trip flight between Sydney and Seattle?
Prices are currently low for flights on this route.
Typical prices usually range from $1,386 to $1,663.The lowest price recently found on this route was $1,061.
What is the cheapest month to fly to Seattle?
The month of August is, on average, the cheapest month to fly to Seattle from Sydney, with most prices found around $1,434. If you are unable to visit Seattle during the month of August, then departing from Sydney during the month March is also very affordable. Most momondo users find prices during this month for around $1,441.
How far in advance should I book a flight from Sydney to Seattle?
You are more likely to see cheaper flights to Seattle from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $1,613 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Sydney for as low as $1,436 on momondo.
Can stopping save me money on Sydney to Seattle flights?
You could potentially save up to 17% on your flight if you consider stops on a Sydney to Seattle flight.
How have Sydney to Seattle flight prices changed over time?
As of October 2026, prices for Sydney to Seattle flights are approximately 14% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Sydney Kingsford Smith to Seattle/Tacoma Intl?
Delta and United Airlines are the most popular carriers operating from Sydney Kingsford Smith to Seattle/Tacoma Intl
Which airlines fly to Seattle?
Air Canada, United Airlines and Qantas Airways are the top three most popular airlines that fly to Seattle from Sydney according to our data. Air Canada is the first choice among our users, with 50% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular for stopovers for flights between Sydney and Seattle?
Vancouver (YVR) was the most common stop: 58% of momondo users choosing one-stop flights on this route connected there.
Which stopover airport offers the lowest fares from Sydney to Seattle?
Flights via Nadi (NAN) offer the lowest average return price of $998.
Which stopover airport has the shortest travel time from Sydney to Seattle?
Flights connecting via Nadi (NAN) have the shortest average one-way travel time: 16h 50m.
Which stopover airport has the shortest connection time from Sydney to Seattle?
Honolulu (HNL) has the shortest average stopover time for this route: 1h 46m.
When to book flights from Sydney to Seattle
Cheap Sydney to Seattle (SYD to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sydney to Seattle
Frequently asked questions about flying from Sydney to Seattle
How far is Sydney Kingsford Smith to Seattle/Tacoma Intl by plane?
There are 12462.2 km between Sydney Kingsford Smith and Seattle/Tacoma Intl. A reasonable flight in good conditions will take 17h 36m.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?
The number of operators available for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport is 6 as of October 2026.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sydney to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Sydney to Seattle is Air Canada (45% of total bookings). The next most popular airlines are United Airlines (27%), Qantas Airways (10%), and American Airlines (8%).
Best airlines flying from Sydney to Seattle
Compare and see reviews for airlines that fly from Sydney to Seattle with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,128 | Free cancellation | Rating 7.4 10,350 reviews | |||
| PriceFrom $1,220 | Free cancellation | Rating 7.1 11,758 reviews | |||
| PriceFrom $1,261 | Free cancellation | Rating 7.0 12,152 reviews | |||
| PriceFrom $1,315 | Free cancellation | Rating 7.5 1,109 reviews | |||
| PriceFrom $1,346 | Free cancellation | Rating 7.8 8,653 reviews | |||
| PriceFrom $1,460 | Free cancellation | Rating 7.8 2,806 reviews |
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Sydney to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sydney to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from Sydney to Seattle with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seattle from Sydney which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Sydney to Seattle?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to Seattle.
I’m not ready to book a flight from Sydney to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Sydney and alert you when they change.