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Cheap flights from Sydney to Seattle from $735

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 21/5. 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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Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Sydney to Seattle.
 Logo
16:20 - 20:25SYD-SEA
21h 05m2 stops
 Logo
18:25 - 14:40SEA-SYD
27h 15m1 stop
$1,407
Find Deal
Thu, 8 May - Wed, 21 May
 Logo
16:20 - 06:15SYD-SEA
30h 55m1 stop
 Logo
18:25 - 14:40SEA-SYD
27h 15m1 stop
$1,409
Find Deal
Thu, 8 May - Wed, 21 May
Qantas Airways Logo
09:10 - 23:01SYD-SEA
30h 51m1 stop
Qantas Airways Logo
06:14 - 07:05SEA-SYD
31h 51m1 stop
$1,719Qantas Airways
Find Deal
Mon, 12 May - Mon, 26 May
United Airlines Logo
10:20 - 11:56SYD-SEA
18h 36m1 stop
United Airlines Logo
15:23 - 07:55SEA-SYD
22h 32m1 stop
$1,742United Airlines
Find Deal
Mon, 8 Sep - Tue, 14 Oct
United Airlines Logo
09:30 - 15:54SYD-SEA
23h 24m2 stops
United Airlines Logo
19:35 - 07:55SEA-SYD
18h 20m1 stop
$1,816United Airlines
Find Deal
Sat, 6 Sep - Mon, 13 Oct
Air Canada Logo
07:00 - 09:21SYD-SEA
19h 21m2 stops
Air Canada Logo
14:55 - 12:40SEA-SYD
27h 45m2 stops
$2,043Air Canada
Find Deal
Thu, 11 Sep - Sun, 12 Oct
Air Canada Logo
10:00 - 09:21SYD-SEA
40h 21m2 stops
Air Canada Logo
14:55 - 07:40SEA-SYD
46h 45m2 stops
$2,048Air Canada
Find Deal
Wed, 10 Sep - Sat, 11 Oct
Hawaiian Airlines Logo
21:40 - 06:15SYD-SEA
25h 35m1 stop
Hawaiian Airlines Logo
08:25 - 19:45SEA-SYD
18h 20m1 stop
$2,052Hawaiian Airlines
Find Deal
Fri, 23 May - Fri, 30 May
Hawaiian Airlines Logo
21:40 - 06:15SYD-SEA
25h 35m1 stop
Hawaiian Airlines Logo
08:15 - 19:45SEA-SYD
18h 30m1 stop
$2,219Hawaiian Airlines
Find Deal
Tue, 29 Apr - Fri, 2 May
Qantas Airways Logo
09:10 - 20:08SYD-SEA
27h 58m1 stop
Qantas Airways Logo
07:20 - 08:05SEA-SYD
30h 45m1 stop
$2,229Qantas Airways
Find Deal
Mon, 8 Sep - Thu, 9 Oct

Asiana Airlines flights from Sydney to Seattle

Our best Asiana Airlines deals on Sydney to Seattle flight tickets
Asiana Airlines
1 June
SYD09:30Sydney Kingsford Smith
44h 00m
1 stop
SEA12:30Seattle/Tacoma Intl
29 Aug
SEA14:30Seattle/Tacoma Intl
24h 00m
1 stop
SYD07:30Sydney Kingsford Smith
Asiana Airlines
1 June
SYD09:30Sydney Kingsford Smith
44h 00m
1 stop
SEA12:30Seattle/Tacoma Intl
27 Aug
SEA14:30Seattle/Tacoma Intl
24h 00m
1 stop
SYD07:30Sydney Kingsford Smith
Asiana Airlines
1 June
SYD09:30Sydney Kingsford Smith
44h 00m
1 stop
SEA12:30Seattle/Tacoma Intl
28 Aug
SEA14:30Seattle/Tacoma Intl
24h 00m
1 stop
SYD07:30Sydney Kingsford Smith

Philippine Airlines flights from Sydney to Seattle

Our best Philippine Airlines deals on Sydney to Seattle flight tickets
Philippine Airlines
10 Sept
SYD10:10Sydney Kingsford Smith
26h 05m
1 stop
SEA19:15Seattle/Tacoma Intl
1 Oct
SEA23:35Seattle/Tacoma Intl
39h 25m
1 stop
SYD08:00Sydney Kingsford Smith
Philippine Airlines
7 Sept
SYD10:10Sydney Kingsford Smith
26h 05m
1 stop
SEA19:15Seattle/Tacoma Intl
12 Oct
SEA23:35Seattle/Tacoma Intl
39h 25m
1 stop
SYD09:00Sydney Kingsford Smith
Philippine Airlines
7 Sept
SYD10:10Sydney Kingsford Smith
26h 05m
1 stop
SEA19:15Seattle/Tacoma Intl
3 Oct
SEA23:35Seattle/Tacoma Intl
39h 25m
1 stop
SYD08:00Sydney 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 $1,577. 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 $1,610.

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 $1,619. 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 $1,861.

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 $1,543. 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 $1,883.

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 25 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $1,770 when searching 25 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 $1,564 on momondo.

How have Sydney to Seattle flight prices changed over time?

As of April 2025, prices for Sydney to Seattle flights are approximately 10% 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

$735

Fastest flight time

17h 30m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Sydney in the past 72 hours is $735. The best return flight deal from Sydney to Seattle found on momondo in the last 72 hours is $1,407.
The fastest flight from Sydney to Seattle takes 17h 30m
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 30m.

  • 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 $1,059Free cancellationRating
7.4
8,658 reviews
Search United Airlines flights
Virgin AustraliaPriceFrom $1,184Free cancellationRating
7.5
398 reviews
Search Virgin Australia flights
Asiana AirlinesPriceFrom $1,271Free cancellationRating
8.2
438 reviews
Search Asiana Airlines flights
Air CanadaPriceFrom $1,327Free cancellationRating
7.0
9,134 reviews
Search Air Canada flights
Hawaiian AirlinesPriceFrom $1,341Free cancellationRating
7.9
2,380 reviews
Search Hawaiian Airlines flights
Philippine AirlinesPriceFrom $1,345Free cancellationRating
7.2
855 reviews
Search Philippine Airlines flights
American AirlinesPriceFrom $1,393Free cancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air New ZealandPriceFrom $1,411Free cancellationRating
8.0
464 reviews
Search Air New Zealand flights
Qantas AirwaysPriceFrom $1,474Free cancellationRating
7.5
818 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,495Free cancellationRating
8.1
1,288 reviews
Search Singapore Airlines 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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