$431 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 10/15. 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, Nov 20 - Sun, Nov 30
Air Canada Logo
7:10 am - 2:26 pmMEL-SEA
26h 16m2 stops
Air Canada Logo
3:40 pm - 3:35 pmSEA-MEL
28h 55m2 stops
$799Air Canada
Find Deal
Mon, Sep 15 - Mon, Sep 22
 Logo
8:45 pm - 9:44 pmBNE-SEA
41h 59m2 stops
 Logo
8:25 am - 7:30 amSEA-BNE
30h 05m2 stops
Thu, Sep 11 - Mon, Sep 22
United Airlines Logo
10:20 am - 5:51 pmSYD-SEA
24h 31m2 stops
United Airlines Logo
5:14 pm - 7:00 amSEA-SYD
20h 46m1 stop
$823United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 29
Delta Logo
9:25 am - 2:40 pmSYD-SEA
22h 15m1 stop
Delta Logo
5:40 pm - 6:35 amSEA-SYD
19h 55m1 stop
$834Delta
Find Deal
Mon, Nov 17 - Wed, Dec 3
United Airlines Logo
1:00 pm - 1:28 pmMEL-SEA
19h 28m1 stop
United Airlines Logo
5:05 pm - 9:30 amSEA-MEL
21h 25m1 stop
$843United Airlines
Find Deal
Thu, Sep 25 - Sun, Sep 28
Delta Logo
9:25 am - 2:39 pmSYD-SEA
22h 14m2 stops
Delta Logo
11:15 am - 6:35 amSEA-SYD
26h 20m2 stops
$938Delta
Find Deal
Sun, Sep 21 - Tue, Sep 30
Qantas Airways Logo
5:45 pm - 12:54 pmSYD-SEA
36h 09m1 stop
Qantas Airways Logo
6:05 pm - 6:05 amSEA-SYD
19h 00m1 stop
$1,001Qantas Airways
Find Deal
Thu, Nov 20 - Sun, Nov 30
Qantas Airways Logo
12:00 pm - 1:02 pmMEL-SEA
20h 02m1 stop
Qantas Airways Logo
6:05 am - 9:30 amSEA-MEL
32h 25m1 stop
$1,041Qantas Airways
Find Deal
Thu, Oct 2 - Thu, Oct 9
Hawaiian Airlines Logo
9:40 pm - 11:19 pmSYD-SEA
18h 39m1 stop
Hawaiian Airlines Logo
7:44 am - 7:45 pmSEA-SYD
18h 01m1 stop
$1,058Hawaiian Airlines
Find Deal
Thu, Oct 2 - Thu, Oct 9
Hawaiian Airlines Logo
9:40 pm - 11:19 pmSYD-SEA
18h 39m1 stop
Hawaiian Airlines Logo
7:44 am - 7:45 pmSEA-SYD
18h 01m1 stop
$1,085Hawaiian Airlines
Find Deal
Booking Insights

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 $1,002 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 $1,386 and $1,365 respectively. For one-way flights, the best month to travel is November with an average price of $964.

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, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$431
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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 4,087 direct flights from within Australia to Seattle. The most common day for departures is Sunday, 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.
7.9
DeltaOverall score based on 7982 reviews
7.3Food
7.9Entertainment
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

6.0 GoodKristopher, Aug 2025HPN - ATL
Read more Delta reviews

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

Our seats were comfortable with adequate room to stretch out and recline. The food was tasty and served it just the right intervals. Our flight attendant was extra attentive and friendly. Flight arrived early. And the most turbulence. Overall that’s good and experience for an 11 hour flight as can be hoped for

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

I could not use my Hawaiian airlines confirmation number to check in. I figured out on my own that I had to use Alaska airlines confirmation number to check in on the Alaska airlines site. I called Hawaiian airlines and they told me that they could not help me.

Alaska Airlines crew had the empty two people seats but they lied to us and said they can adjust us , so we have to seat apart

Ok but why they need to sell the ear buds?

Our flight was delayed, which I know things can happen. The bathrooms were dirty and a mess. It took over an hour to get our bags after the plane landed. Every flight was on the same 2 baggage claims. You would thing if we spent over 5 hours on a flight we would get more then a tiny bag of pretzels. The movie and tv choices were mid.

Your Hawaiian airlines record locator number did not work! I could not check in in advance at either Hawaiian or Alaska airlines website and had to wait on long lines to check in at the airport. This caused considerable stress and I was worried I would miss the flight and thus had to arrive even earlier than otherwise. Finally, I wanted to change my flight and could not do so because no record locator was recognized for me to make changes. This was a very poor experience. Also, I could not go in and check or change my seat assignments. I was assigned a window seat, which is my least preferred location, and which I have not flown in for years. Please advise as to what kind of customer service gesture you can provide to make up for this below par experience.

The flight was great! The flight attendants were friendly and attentive. I would definitely fly Hawaiian Aurlines again!

You have to buy the ear buds and they only offers little cup of water twice.

Boarding area in Seattle was super busy and tight due to the layout.

The flight was very smooth and the landing was AMAZING! I have flight anxiety and it didnt peak once! :) Thank you to the pilots and crew!!

Boarding was confusing. Why are families so special that they get to board first? They and their stupid kids take up all the space in the overhead compartments. Then I get stuck having to gate check a bag when I've gone to a lot of trouble to pack efficiently to AVOID checking luggage.

Great as usual, some delays but well communicated and made up for in the air

Poor! This flight was delayed 14 hours. There was no assistance in helping customers find other routes to their destination, nor any other kind of support. It was a chaotic experience. I'm not likely to fly with AA going forward.

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

We were upgraded and after just a short delay in attending to a safety check we were on our way. Would definately fly Qantas International on their Dreamliner again.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

I tried to check in online but was unable to do so. I stood in line for nearly two hours to check in. American Airlines was understaffed. When I finally got to the kiosk to check in, I was still unable to check in. No AA staff was available to help. Finally one of the airport security agents who was helping passengers became of lack of AA Staff told me: “I think the reason you can’t check in is that you are starting your name with an upper case letter when you write it. Just write it with all lower case letters.” That did allow me to check in. HOW COULD ANYONE POSSIBLY KNOW THAT IF THEY USE AN INITIAL UPPER CASE LETTER TO SPELL THEIR OWN NAME, AA WOULD NOT ALLOW THEM TO CHECK IN?????? Then I had to wait in line over half an hour again to drop off my baggage. Although I arrived at the airport 3 hours early, by the time I got to the gate, they had already started boarding.

One of the oldest most uncomfortable "lay down" seats I've ever experienced. Old plane and old seats that don't lay flat. The seat back does not even recline - at all. Instead the legrest awkwardly extends to fill the gap between a small cubby into which you must insert your feet/legs. I am 5' 11" and could not lay straight but had to tuck my knees. Ticket was also very expensive. Would not recommend flying business/first on Finair from Melbourne to Bangkok and will not do so again myself.

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

The flight was comfortable with the exit row and great service

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

For both flights I requested a gluten free meal, they didn’t have one nor were there other options.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

Inoperable monitor left no entert for 9 hours. Crew was not helpful Food was awful.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

Terrible, return flight was cancelled a night before the flight was scheduled to depart and I was notified by an email and an automated message on their phone line. I’ll never book Air Canada again

Could not understand what the attendant was saying during his announcements.

Biggest problem for me is that I am Star Alliance Gold and they were not able to give me access to to Maple Lounge because of some computer glitch . It was management by information system. She could clearly see my status and still would not give me access because the computer woudl not let her. She should have override that be attentive to a customer and figure rhat out later

Economy seats always cramped, no meal on international flight, no plugs for electronics, but we got there and cabin crew was excellent.

Horrible, experience, 5 hours delay, they changed gates 3 times, the last one we had to wait for 1::30 hre for the door to open to get to that gate. 0 apologies from Air Canada, they don’t care at all about their passengers

I paid for comfort plus seats but did not get the extra leg room. When I told the stewardess, she just ignored me.

Great breakfast and coffee …..fastest bag service I have ever had in NOLA

I had a very disappointing experience with customer service. I was suffering from a severe viral infection that included a rash and persistent cough, leaving me unable to even sit upright. Given the circumstances, I requested travel credits from Canada Air, explaining the potential health risk to others onboard. However, the airline showed no concern for my condition and stated they were not in a position to make decisions based on health considerations. Despite my illness, I received no support or flexibility. Ultimately, I chose to forgo my flight due to their lack of responsiveness. It’s unfortunate that airlines like this operate without prioritizing passenger health and safety.

Late departing. Late arriving. More worried about limiting bags on board. Free beer and wine a nice surprise.

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Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

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