$422 Find Cheap Flights from Australia 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 to Seattle departing on 8/27. 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

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These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle
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Cheap Flights from Australia to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Australia 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 Australia to Seattle

Thu, Jul 24 - Fri, Aug 8
Air Canada Logo
9:20 am - 1:06 pmSYD-SEA
20h 46m1 stop
Air Canada Logo
1:45 pm - 7:20 amSEA-SYD
24h 35m1 stop
$771Air Canada
Find Deal
Thu, Jul 24 - Fri, Aug 8
Air Canada Logo
7:00 am - 9:21 amSYD-SEA
19h 21m2 stops
Air Canada Logo
1:45 pm - 7:20 amSEA-SYD
24h 35m1 stop
$784Air Canada
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Fri, Aug 8 - Sat, Aug 23
United Airlines Logo
9:30 am - 10:16 pmSYD-SEA
29h 46m1 stop
United Airlines Logo
2:29 pm - 6:55 amSEA-SYD
23h 26m1 stop
$865United Airlines
Find Deal
Tue, Aug 26 - Sun, Sep 21
Delta Logo
9:25 am - 7:00 pmSYD-SEA
26h 35m2 stops
Delta Logo
11:15 am - 6:35 amSEA-SYD
26h 20m2 stops
$866Delta
Find Deal
Sun, Jul 27 - Mon, Sep 15
Delta Logo
9:25 am - 4:51 pmSYD-SEA
24h 26m1 stop
Delta Logo
5:30 am - 6:35 amSEA-SYD
32h 05m2 stops
$868Delta
Find Deal
Fri, Sep 12 - Fri, Sep 26
United Airlines Logo
9:30 am - 1:30 pmSYD-SEA
21h 00m1 stop
United Airlines Logo
12:43 pm - 7:00 amSEA-SYD
25h 17m2 stops
$871United Airlines
Find Deal
Tue, Jul 29 - Wed, Jul 30
Hawaiian Airlines Logo
9:40 pm - 9:40 pmSYD-SEA
17h 00m1 stop
Hawaiian Airlines Logo
8:15 am - 7:45 pmSEA-SYD
18h 30m1 stop
$911Hawaiian Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
Hawaiian Airlines Logo
9:40 pm - 6:00 amSYD-SEA
25h 20m1 stop
Hawaiian Airlines Logo
3:55 pm - 7:45 pmSEA-SYD
34h 50m1 stop
$912Hawaiian Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
Korean Air Logo
8:40 am - 10:50 amBNE-SEA
43h 10m1 stop
Korean Air Logo
1:20 pm - 6:45 amSEA-BNE
24h 25m1 stop
$1,436Korean Air
Find Deal
Thu, Aug 14 - Thu, Aug 21
Korean Air Logo
8:40 am - 2:01 pmBNE-SEA
22h 21m1 stop
Korean Air Logo
1:20 pm - 6:45 amSEA-BNE
24h 25m1 stop
$1,450Korean Air
Find Deal
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KAYAK's insights & trends for flights to Seattle

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

What is the cheapest month to fly to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to Seattle is February, where tickets cost $995 on average for return flights. On the other hand, the most expensive months are December and July, where the average cost of tickets from Australia is $1,426 and $1,292 respectively. For one-way flights, the best month to travel is November with an average price of $954.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights 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, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$422
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Sydney to Seattle

FAQs - booking Seattle flights

  • What public transport is available to get to and from the airport?

    King County Metro and Sound Transit provide bus services to a variety of destinations and traffic-free transit to and from the airport. Keep it green and ride your bike to and from the airport, with many bicycle resources available to travellers. Pick up or drop off all on your phone with app-based ride shares, all serviced at SEA Airport.

  • What is the best way to reach downtown Seattle?

    The Link Light Rail Service is the quickest and most convenient option for travellers who prefer public transport. Trains arrive every 6–15min, depending on the time and day, everyday of the week, operating from 05:00 Monday through Saturday, and from 06:00 on Sunday. The ride will take about 40min from the airport to downtown Seattle, and an adult fare costs about $ 2.25–3.25 (A$ 3.25–4.70).

  • Are VIP lounges available at Seattle Airport?

    The Club at SEA located inside Seattle Airport (in A Concourse and South Satellite), which can be accessed by all passengers who purchase a day pass. There are also several airline lounges for passengers with certain memberships or ticket types: United Club, The Centurion Studio by American Express, Alaska Lounge, Delta Sky Club, British Airways Terraces Lounge, and the USO Centre.

  • Can I stay overnight in Seattle Airport?

    Seattle Airport is open 24h and may serve some travellers as a budget sleep spot in the late or early hours. It is possible to stay Airside (past security) overnight, where more comfortable sleep spots can be found.

  • Are there any airport hotels nearby Seattle Airport?

    For uninterrupted sleep, there are many hotels near the airport accessible by shuttle bus service, for example: Hilton Seattle Airport & Conference Centre (3min drive), Red Roof Inn Seattle Airport (4min drive), Red Lion Hotel Seattle Airport (4min drive), and La Quinta Inn & Suites Seattle Sea-Tac Airport (4min drive).

  • How far is Seattle/Tacoma Intl Airport from central Seattle?

    You’ll need to travel 11 miles to reach the Seattle city center from Seattle/Tacoma Intl Airport.

  • What is the name of Seattle’s airport?

    When flying to Seattle, you'll arrive at Seattle/Tacoma Intl Airport (SEA). The airport is also known as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

  • What is the cheapest day to fly to Seattle?

    Based on KAYAK data, the cheapest day to fly to Seattle is Sunday where round-trip tickets can be as cheap as $1,141. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $1,375 on average.

  • How does KAYAK find such low prices on flights 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 to Seattle.

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Seattle?

    The cheapest time of day to fly to Seattle is generally in the morning, when round-trip flights cost $1,213 on average. The most expensive time of day to fly to Seattle is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,679.

  • How many direct flights to Seattle are there each week?

    Each week there are around 4,273 direct flights from within Australia to Seattle. The most common day for departures is Friday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Seattle

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.
  • Seattle-Tacoma International Airport (SEA) is the primary airport serving the Seattle and Tacoma area in Washington, in the United States. This airport is often referred to as Sea-Tac.
  • The international SEA airport is located in the Seattle-Tacoma region, approximately 23 km south of downtown Seattle and 29 km northeast of downtown Tacoma.
  • Easily accessible by road, the airport is located along State Route 99, about midway between Seattle and Tacoma. Interstate 5 and Interstate 405 also converge near the airport, so it's easily accessible by car.
  • Taxis, public buses, light rail train, shuttle buses, and ride share services make getting to and from SEA more convenient. You can even reach the airport by cycling or walking.
  • Seattle-Tacoma has two satellite terminal buildings. Inside, there are 80 gates across four concourses. The two terminal buildings, north and south, are connected to the main terminal by a Satellite Transit System (train). All international arrivals are handled in the South Satellite Terminal.
  • The airport offers paid, on-site parking in a 13.000-space car park, also notable for being North America’s largest parking structure under one roof. Find a parking space won't be a hassle.

Reviews of the top 5 airlines serving from Australia to Seattle

 
See real verified KAYAK customer reviews for airlines flying to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Australia to Seattle. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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.
8.4
Korean AirOverall score based on 1101 reviews
8.5Boarding
8.3Comfort
8.7Crew
8.2Entertainment
8.1Food
Airline reviews

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

4.0 OkayJohn, Jun 2025SEA - ICN
Read more Korean Air reviews

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The boarding process for Korean airlines is very straightforward and easy. You've never met such helpful and friendly people. The food was great and the entertainment options were excellent too. My teenage boys found programs they wanted to watch while I had fun watching a full season of the Last Man - the Blind Investigator (Japanese), which my wife enjoyed too. My only complaint was that it takes a very long time to taxi at ICN (20 minutes) and the pilot had to hold at the gate for 10 minutes after our scheduled departure time, which meant we got to Seattle 27 minutes late. Luckily I had a long enough connection to make my next flight, but just barely.

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

The way BCN airport handled boarding was a huge improvement over our trip to Spain from JFK. Instead of gate-mosquitos edging in before their zone was called, in BCN they had clearly marked lines for Zones 1-8 and people just lined up correctly. The flight itself was uneventful. The meal (curried chicken and rice) was one of the better meals we've had on Delta. Entertainment options were plentiful, power chargers were available in Main Cabin, and seats were decent. Flight staff were very friendly and positive throughout the 8 hour flight.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

The checkpoint hornets are always looking fhrough Americans' luggage keeping what they deem impassible! Grrrrr!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Flight was an hour late, who knows why. It was OK, nothing outstanding.

Only not having an assigned seat was an issue. Rest was great

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

I booked on Hawaiian and was bumped to an American airline flight in a different terminal. I was traveling with my two kids and told to take an air train to check my baggage in. We were given the last three seats in front of the toilet. Never flying Hawaiian again. Totally unreliable.

Good except that I couldn’t change seat and made me wait untill I checked in

The middle name gave us so much issue at check in we had done middle names when booking but Hawaiian/Alaska don’t recognize the middle names and gave us problems at check in. We have never experienced that before.

Everything was great except for the delayed flight times (it was delayed twice).

I was booked thru Hawaiian Airlines (HA) on Kayak in February. I got 2 confirmation emails from Hawaiian Airlines in February. Even though the flight ticket informed me the flight was marketed thru HA and operated by Alaska Airlines (AA), I was never given any confirmation codes or anything from Kayak or AA to check into my flight online ahead of time. They also couldn't find the HA flight number I was given on their website and was told my flight did not exist unless I searched thru the AA website for flight details that was similar to the info HA gave me. The only way to check into my flight and make sure the flight still existed required me to get there 4 hours early. When I arrived at the airport, HA desk told me to go to AA desk. First AA desk redirected me to another desk, second AA desk told me to find someone with an iPad, and finally the iPad rep was able to help me. I also had to chat with AA reps online the night previous to my return trip because the same issue occurred.

Traveling with my 90 year old mother, the boarding process was great, the gate crew was very helpful and friendly. One of the flight attendants was kind enough to assist her to and from the restroom mid-flight and cater to any requests she had. I wish I flew Hawaiian Airlines more often, it was a great trip!

I did not board neither one of my flights because It got delayed and I had to be at my destination at a certain time

We were delayed at the SD gate for close to an hour before we were allowed to depart for SJ. Reason given was inadequate ground crew to move the plane from the gate.

Thanks to the supervisor Jose my pregnant wife and our family will not miss a very important ultrasound tomorrow. What he did was simply heroic. He needs to be promoted and praised. Please tell him our family appreciates him so so much!

Your crew shortage delayed departure by an hour resulting in us missing an event we had scheduled for that afternoon outside of Fresno.

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

Very rough getting into denver. my kid threw up it was so rough.

We were given vouchers we couldn’t use with a 5.5 hour delay

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

In a nutshell, my bag, the one I have to pay for, because now you can’t even bring a carry on, did not make it. I am still waiting for an update. The fact that not only were have to pay for it, but on top of that we are stuck without getting it, it’s ridiculous..

The plane was filthy!!!! There were empty food wrappers in the pockets and worst of all a wad of hair where someone had obviously brushed their hair, cleaned out the brush and left the wad of hair in the pocket. It was the most disgusting thing I’ve ever seen!! The seats are so crammed together with NO leg room. The AC vent controllers do not adjust. I will likely not book another AC flight from Florida to Montreal.

This was an excellent experience for a very short flight.

Registered my luggage at 5pm. Arrived at JFK at 1:00 am. Worst trip ever. Never again

Really good, super comfy flight and the stewardess was great.

Air Canada never runs on time. You’re lucky if your flight is not cancelled or diverted. Worst airline in the world for gas lighting its customers.

No space in overhead bin, one cookie, 2 oz of juice - is not customer service.

Good flight, friendly crew and overall - good service on United Airlines.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

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