SYD - SEA

$442 Find Cheap Flights from Sydney to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to Seattle departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Seattle, as well as popular online travel agencies
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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$823
Overall average: $1,022
Multiple Airlines
Wed 3/4Mon 3/23
SYD - SEA • 2 stops
Cheapest one-way
$442
Typical prices: $554-$927
Multiple Airlines
Tue 3/17
SYD - SEA • 2 stops
Top airlines
Air Canada
Cheapest • from $852 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 16% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sydney to Seattle (SYD-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sydney to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sydney to Seattle

Wed, Mar 4 - Mon, Mar 23
Multiple Airlines Logo
6:00 am - 6:57 pm
SYD
-
SEA
31h 57m
2 stops
Multiple Airlines Logo
5:59 pm - 12:35 pm
SEA
-
SYD
24h 36m
2 stops
$823Multiple Airlines
Mon, Mar 9 - Tue, Mar 24
Multiple Airlines Logo
2:00 pm - 8:58 pm
SYD
-
SEA
24h 58m
2 stops
Multiple Airlines Logo
9:08 am - 10:05 pm
SEA
-
SYD
42h 57m
2 stops
$830Multiple Airlines
Tue, Mar 10 - Wed, Mar 25
Multiple Airlines Logo
2:00 pm - 7:58 pm
SYD
-
SEA
23h 58m
2 stops
Multiple Airlines Logo
5:59 pm - 12:35 pm
SEA
-
SYD
24h 36m
2 stops
$840Multiple Airlines
Thu, Mar 5 - Wed, Mar 18
Multiple Airlines Logo
2:00 pm - 7:58 pm
SYD
-
SEA
24h 58m
2 stops
Multiple Airlines Logo
5:59 pm - 12:35 pm
SEA
-
SYD
24h 36m
2 stops
$847Multiple Airlines
Wed, Mar 4 - Mon, Mar 23
Air Canada Logo
11:20 am - 3:01 pm
SYD
-
SEA
22h 41m
1 stop
Air Canada Logo
10:10 am - 8:35 am
SEA
-
SYD
28h 25m
1 stop
$852Air Canada
Thu, Mar 5 - Wed, Mar 18
Air Canada Logo
11:20 am - 7:16 pm
SYD
-
SEA
26h 56m
1 stop
Air Canada Logo
8:00 pm - 8:35 am
SEA
-
SYD
18h 35m
1 stop
$857Air Canada
Thu, Mar 5 - Wed, Mar 18
Air Canada Logo
8:30 am - 9:35 am
SYD
-
SEA
20h 05m
2 stops
Air Canada Logo
3:40 pm - 8:35 am
SEA
-
SYD
22h 55m
1 stop
$873Air Canada
Wed, Mar 4 - Mon, Mar 23
Air Canada Logo
11:20 am - 3:01 pm
SYD
-
SEA
22h 41m
1 stop
Air Canada Logo
3:40 pm - 12:40 pm
SEA
-
SYD
27h 00m
2 stops
$874Air Canada
Mon, Mar 9 - Tue, Mar 24
Air Canada Logo
11:20 am - 3:01 pm
SYD
-
SEA
21h 41m
1 stop
Air Canada Logo
10:10 am - 8:35 am
SEA
-
SYD
28h 25m
1 stop
$879Air Canada
Thu, Mar 5 - Wed, Mar 18
Air Canada Logo
8:30 am - 9:35 am
SYD
-
SEA
20h 05m
2 stops
Air Canada Logo
8:00 pm - 1:40 pm
SEA
-
SYD
23h 40m
2 stops
$894Air Canada
Booking Insights

KAYAK's insights & trends for Sydney to Seattle flights

Get data-powered insights and trends into flights from Sydney to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Sydney to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sydney to Seattle is August, where tickets cost $896 (return) on average. On the other hand, the most expensive months are July and January, where the average cost of round-trip tickets is $1,392 and $1,222 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sydney to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sydney to Seattle, you should book around 3 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$442
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Sydney to Seattle

When to book flights from Sydney to Seattle

Are your dates flexible? Find out the best times to travel from Sydney to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sydney to Seattle

  • Are there any direct flights from Sydney and Seattle?

    There aren’t any airlines offering direct flights from Sydney to Seattle. However, you will find that most of the itineraries come with just one stop along the way. Where you stop will depend on the airline you fly with. For example, flights with Qatar Airways come with a stop at Hamad International Airport (DOH) in Doha. Flights with Qantas, United, or American Airlines generally come with a stop in a US city like Los Angeles (LAX) or Honolulu (HNL).

  • Where do I go to hire a car at Seattle Airport?

    The Seattle-Tacoma International Airport has an off-site facility dedicated to hire cars. This is located a 5min drive from the airport and there are free shuttles operating 24h a day, all throughout the year. You will find the pick-up zone for the shuttle just outside the baggage claim level in the international arrivals hall.

  • Where are the taxi and ride-share pickup points at the Seattle Airport?

    App-based ride-share operators and taxis pick up passengers from the third floor of the parking garage. You should find the taxis on the north and south curbs. If you’re meeting a ride-share operator, they’ll generally head to rows G through J (the orange and purple sections) of this level of the garage. To get to this parking garage, you’ll need to cross the skybridge located one level up from baggage claim. Once you’re over the bridge, you’ll need to go back down a level to get to the third floor.

  • What is the cheapest flight from Sydney to Seattle?

    In the last 3 days, the lowest price for a flight from Sydney to Seattle was $442 for a one-way ticket and $823 for a round-trip.

  • Do I need a passport to fly between Sydney and Seattle?

    Yes

  • Which airports will I be using when flying from Sydney to Seattle?

    When flying out of Sydney you will be using Sydney Kingsford Smith. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Sydney to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sydney to Seattle?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Sydney and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Sydney to Seattle, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sydney to Seattle are Delta and United Airlines. With an average price for the route of $1,374 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,167 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Sydney to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sydney to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sydney to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Sydney is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sydney to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Sydney with another airline. Booking your flights between Sydney and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sydney to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Sydney up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Sydney to Seattle

  • Taxis and rideshare providers offer a quick and easy way to get to Sydney Airport (SYD). The trip takes around 20min from the city centre (depending on traffic) and generally costs around A$ 45-55.
  • Sydney’s Kingsford Smith Airport (SYD) has three terminals. However, all international flights depart from Terminal 1, so this is the terminal you’ll need for your flight to Seattle, Washington.
  • Seattle-Tacoma International Airport (SEA) features a range of larger-than-life art installations. It’s worth taking some time to explore creations like The Cathedral and Carbon Veil.

Reviews of the top 3 airlines serving from Sydney to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sydney to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8180 reviews
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

Flight was suspended mid air for over 1 hour and it was late

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Horrible Flight significantly delayed. Not due to united issue. But trying to rebook connection flight and get information about overnight accommodation was difficult. Agent did not seem to care or have any interest to help.

Everything was on time Will use united again for sure

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Airport experience at Newark was not great. Only one gate open at immigration for US passports when multiple international flights arriving at the same time. Then having to take a train and a bus to different terminal only to have to clear security again, after I had already gone through at my initial departure location. Older plane, no entertainment screens available, and for economy plus, seat was very uncomfortable. Crew was friendly and this leg of my flight was on-time, even though I arrived later than initially scheduled due to 1st flight being over 2 hours delayed and missing my original connection.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

they were super helpful. Agents at the desk got me on an earlier flight and I was able to get home several hours earlier.

This is a great non-stop YVR-MIA. Very comfortable plane, and no transfer through a city that gets major winter weather!

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

Better entertainment & food options more may be adding chicken option or on vegetarian side good quality pasta

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

Amazing service, with enthusiastic crew members, and some breathtaking views of Vancouver. No IFE though, as it is only a 1 hour flight on a regional Turboprop jet.

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

My seat was covered in vomit and I will be reaching out to Air Canada

Everything you need to know for your flight from Sydney to Seattle

Information on your arrival and departure airports