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Cheap flights from Sydney to Seattle from $639

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 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Sydney to Seattle

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Sydney to Seattle.
16:20 - 06:15SYD-SEA
30h 55m1 stop
20:40 - 14:40SEA-SYD
25h 00m1 stop
$1,448
Find Deal
Thu, 29 May - Thu, 12 Jun
16:20 - 08:05SYD-SEA
32h 45m2 stops
19:55 - 14:40SEA-SYD
25h 45m1 stop
$1,465
Find Deal
Mon, 5 May - Thu, 29 May
10:10 - 19:15SYD-SEA
26h 05m1 stop
23:35 - 08:00SEA-SYD
39h 25m1 stop
$1,468Philippine Airlines
Find Deal
Wed, 17 Sep - Fri, 26 Sep
10:30 - 13:01SYD-SEA
43h 31m2 stops
05:35 - 07:20SEA-SYD
32h 45m1 stop
$1,576Air Canada
Find Deal
Wed, 13 Aug - Wed, 27 Aug
11:50 - 18:36SYD-SEA
23h 46m2 stops
13:45 - 09:25SEA-SYD
26h 40m2 stops
$1,642ANA
Find Deal
Tue, 16 Sep - Thu, 25 Sep
11:50 - 18:36SYD-SEA
23h 46m2 stops
13:45 - 09:25SEA-SYD
26h 40m2 stops
$1,646ANA
Find Deal
Wed, 17 Sep - Thu, 25 Sep
09:20 - 14:16SYD-SEA
21h 56m1 stop
14:55 - 07:20SEA-SYD
23h 25m1 stop
$1,656Air Canada
Find Deal
Fri, 1 Aug - Sun, 10 Aug
09:30 - 18:14SYD-SEA
25h 44m2 stops
14:30 - 07:00SEA-SYD
23h 30m2 stops
$2,099United Airlines
Find Deal
Fri, 23 May - Fri, 30 May
09:10 - 22:10SYD-SEA
30h 00m1 stop
17:07 - 07:05SEA-SYD
20h 58m1 stop
$2,150Qantas Airways
Find Deal
Sat, 2 Aug - Sun, 10 Aug
09:30 - 13:46SYD-SEA
21h 16m1 stop
05:00 - 06:55SEA-SYD
32h 55m1 stop
$2,174United Airlines
Find Deal
Fri, 27 Jun - Tue, 22 Jul

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
13 Aug
SYD10:30Sydney Kingsford Smith
43h 31m
2 stops
SEA13:01Seattle/Tacoma Intl
27 Aug
SEA05:35Seattle/Tacoma Intl
32h 45m
1 stop
SYD07:20Sydney Kingsford Smith
Air Canada
1 Aug
SYD09:20Sydney Kingsford Smith
21h 56m
1 stop
SEA14:16Seattle/Tacoma Intl
10 Aug
SEA14:55Seattle/Tacoma Intl
23h 25m
1 stop
SYD07:20Sydney Kingsford Smith
Air Canada
13 Aug
SYD09:20Sydney Kingsford Smith
20h 41m
1 stop
SEA13:01Seattle/Tacoma Intl
27 Aug
SEA05:35Seattle/Tacoma Intl
32h 45m
1 stop
SYD07:20Sydney Kingsford Smith

China Airlines flights from Sydney to Seattle

Our best China Airlines deals on Sydney to Seattle flight tickets
China Airlines
12 May
SYD22:10Sydney Kingsford Smith
38h 20m
1 stop
SEA19:30Seattle/Tacoma Intl
8 June
SEA01:10Seattle/Tacoma Intl
40h 35m
1 stop
SYD10:45Sydney Kingsford Smith
China Airlines
17 Sept
SYD22:10Sydney Kingsford Smith
38h 10m
1 stop
SEA19:20Seattle/Tacoma Intl
25 Sept
SEA01:10Seattle/Tacoma Intl
40h 35m
1 stop
SYD10:45Sydney Kingsford Smith
China Airlines
17 Sept
SYD22:10Sydney Kingsford Smith
38h 10m
1 stop
SEA19:20Seattle/Tacoma Intl
25 Sept
SEA01:10Seattle/Tacoma Intl
40h 35m
1 stop
SYD10:45Sydney Kingsford Smith

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?

What is the cheapest month to fly to Seattle?

The month of February is, on average, the cheapest month to fly to Seattle from Sydney, with most prices found around $1,592. If you are unable to visit Seattle during the month of February, then departing from Sydney during the month March is also very affordable. Most momondo users find prices during this month for around $1,638.

What is the cheapest day to depart on your flight to Seattle?

The cheapest day to depart from Sydney to Seattle is on a Thursday. Travellers who choose to depart for Seattle on a Thursday will often find tickets for as low as $1,635. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to Seattle for around $1,879.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is at midday. momondo users have found flights departing from Sydney to Seattle at midday for as low as $1,558. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seattle is in the afternoon when prices are around $1,901.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Sydney when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $1,813 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Sydney for as low as $1,435 on momondo.

How have Sydney to Seattle flight prices changed over time?

As of March 2025, prices for Sydney to Seattle flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Sydney to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

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

Best price found

$639

Fastest flight time

17h 01m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Sydney in the past 72 hours is $639. The best return flight deal from Sydney to Seattle found on momondo in the last 72 hours is $1,448.
The fastest flight from Sydney to Seattle takes 17h 01m
There are no direct flights from Sydney to Seattle. Popular non-direct route for this connection is Sydney Kingsford Smith Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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 01m.

  • 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?

  • 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?


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
United AirlinesPriceFrom $1,069Free cancellationRating
7.4
8,609 reviews
Search United Airlines flights
Virgin AustraliaPriceFrom $1,196Free cancellationRating
7.5
395 reviews
Search Virgin Australia flights
Asiana AirlinesPriceFrom $1,283Free cancellationRating
8.2
440 reviews
Search Asiana Airlines flights
Hawaiian AirlinesPriceFrom $1,331Free cancellationRating
7.9
2,335 reviews
Search Hawaiian Airlines flights
Air CanadaPriceFrom $1,331Free cancellationRating
7.0
8,993 reviews
Search Air Canada flights
ANAPriceFrom $1,353Free cancellationRating
8.3
829 reviews
Search ANA flights
Philippine AirlinesPriceFrom $1,358Free cancellationRating
7.2
843 reviews
Search Philippine Airlines flights
China AirlinesPriceFrom $1,377Free cancellationRating
8.2
722 reviews
Search China Airlines flights
American AirlinesPriceFrom $1,406Free cancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air New ZealandPriceFrom $1,425Free cancellationRating
7.9
455 reviews
Search Air New Zealand flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac
Redmond

Why 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.


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