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Find cheap flights from Seattle to Australia from $625

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Australia departing on 8/8. 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
Wed 5/6
Wed 12/6

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Best Australia Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Sydney
Sydney1 stop$1,422
Brisbane
Brisbane2 stops$1,861
Perth
Perth1 stop$1,605
Adelaide
Adelaide2 stops$2,500
Coolangatta
Coolangatta2 stops$2,621
Hobart
Hobart2 stops$2,366

Good to know

Low season

May

High season

December

Cheapest flight

$625
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (18% more expensive on average)
Flight from Seattle to Sydney

FAQs - booking Australia flights

  • How much luggage can I take if I buy an economy ticket from Seattle to Perth?

    When you fly from Seattle-Tacoma International Airport to Perth in Western Australia, you'll be landing at Perth Airport (PER). You can find a flight aboard Qatar with one stop in Hamad International Airport (DOH) that allows economy classic passengers one carry-on and two checked bags. Most other cheaper flights allow one carry-on.

  • Can I rent a car when my Seattle flight lands in Sydney?

    Sydney Kingsford Smith International Airport has rental car counters located in the arrivals area of Terminal 1 International and Terminals 2/3 Domestic. Some companies represented at include Avis, Europcar, Enterprise, and others.

  • What are some common layover cities on flights from Seattle to Brisbane, Australia?

    When you fly from Seattle-Tacoma International Airport to Brisbane Airport (BNE), you will have at least one stop. Flights on Qantas, Alaska, or United tend to stop in Los Angeles International Airport (LAX). Air Canada tends to stop in Vancouver International Airport (YVR), EVA Air in Taiwan Taoyuan International Airport (TPE), and Singapore Airlines in Singapore Changi International Airport.

  • Which airline flies a sustainable flight from the Seattle Tacoma International Airport SEA to Adelaide Airport (ADL) in South Australia?

    One of the most sustainable airlines that operates flights from Seattle to Adelaide Airport is Alaska airlines. Alaska is making successful strides to achieve net zero carbon emissions by the year 2040 by increasing operational efficiency, investing in fleet modernization, new technology, sustainable aviation fuels, and high quality carbon removal techniques.

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

    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 Seattle to Australia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Australia from 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 from Seattle to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Australia with an airline and back to Seattle with another airline.

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

    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 Australia from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Australia

  • Morning departure is around 14% cheaper than an evening flight, on average*.
  • Travelers who wish to fly from Seattle to Australia will be departing from the Seattle-Tacoma International Airport (SEA). Situated about 13 miles south of the heart of Seattle, this airport is a hub for several airlines, including Alaska, Delta Air Lines, and Horizon Air.
  • Flights from Seattle to Sydney, Australia will land at Sydney Kingsford Smith International Airport (SYD). While it is unlikely that you will find a non-stop flight from Seattle to Sydney, several airlines operate flights with one connection. Air Canada stops in Vancouver, Qantas and Delta in Los Angeles, and ANA in Tokyo.
  • When you fly from Seattle to Melbourne in Victoria, Australia, you will land at Melbourne Airport (MEL). The cheapest flights available tend to involve multiple airlines and connection cities with self-transfers. However, Singapore Airlines offers flights paired with both Scoot and Jetstar that are affordable and have only one stop in Singapore Changi International Airport (SIN).
  • If you want to visit the north of Queensland, the coastal city of Cairns makes an ideal destination. You'll be landing at Cairns Airport (CNS), a hub for Jetstar, Qantas, Australian Airlines, and others. One of the most affordable flights available is aboard Japan Airlines paired with Jetstar with one stop in Narita International Airport (NRT).
  • Economy-ticketed passengers at Seattle-Tacoma International Airport can relax in refined comfort and style while waiting for a flight to Australia. You can show a prepaid lounge pass or pay an entrance fee in order to access the exclusive lounge The Club at SEA. There is one location in the Central Terminal and one in the South Satellite.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 4 airlines serving from Seattle to Australia

 
Need help choosing which airline to fly with from Seattle to Australia? 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.
8.2
Singapore AirlinesOverall score based on 1465 reviews
8.4Boarding
8.1Comfort
7.8Food
8.2Entertainment
8.7Crew
Airline reviews

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

10.0 ExcellentAnonymous, Apr 2024SFO - SIN
Read more about Singapore Airlines reviews

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

It was a great flight Food was great Crew was spectacular

In general good, but the machine seems to be long in operation and some functions were restricted as e. g. Adjusting of seats.

Cabin Crew always friendly and helpful. Seating cramped - foul smelling from toilets, high risk of disease. Guard personal property such as expensive sunglasses Coffee always awful and cold Meal trays toddler sized Not worth the extra cost to fly SQ - use a budget airline, same if not better experience

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

A pc of cake or biscuit at least. The airport was like a maze need to take another bus to the main terminal to immigration.

Transfer within the same terminal and lots of facilities at the airport.

Due to the delay of my first flight, my connecting flight with JetBlue was canceled by Singapore Airlines, but the JetBlue crew was very accommodating and rebooked a seat for me. The crew was very nice and had good attitude.

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.) Lounge was crowded

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.)

Initial flight was cancelled so moved to an alternative flight. As a result, stuck in a middle seat. Flight then place in holding pattern prior to landing resulting in a very late trip home.

There was nothing I didn’t like, prices a little lower would help

Flight delay was informed at the last minute. Food quality is not up to Qantas standard I was unable to book an online boarding pass on any of my 6 flights.

Following a marathon flight riddled by delays and changes from Santiago, Chile, my flight to Melbourne from Sydney was on schedule but I was transferred to the next flight. The reason by ticketing and the floor manager was I missed the entry to flight by one minute! That's right, the emphasised that if I was 1 minute earlier I would be on the flight. I asked what was the point them emphasising 1minute overdue and how that helped me or the situation. They didn't care at all. Replying that if it was one minute earlier they would've done something and smirking delivering the information. Australian's do call Australia home, Qantas calls Australian's suckers.

Rescheduled after ticket purchased and issued, not 2 or 3 times and not a fourth but by 5 times, by Qantas, that's right, 5 changes! Forcing an overnight stay in Chile and need for visa. Qantas can no longer provide basic services as a national or international service provider. Professionalism is extinct and the provider needs to be mentored and educated in perfecting who to operate as an airline. Qantas is the spirit of Australian dissatisfaction.

Amazing! Was put on the earlier flight and I requested for an aisle seat and was given it. Thanks Qantas!

The staff we fantastic and seemed to work very well with each other

Business lounge in Melbourne mediocre. Look at Emirates or Qatar, Qantas! Great friendly crew. Food was good but Emirates is a level above. Business seat good. But can’t compare to Qatar. Main reason for booking Qantas is loyalty and terrific connection via Perth to LHR.

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

You do not have a space for flight cancelled. BUT!!! Air Canada handled it great. Was booked on another airline for the next day. The original flight was booked solid. But he precheck by the maintenance found a mechanical problem and the plane was not safe to fly. It was an inconvenience to have to wait until next day but I would rather arrive safely.

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

I had written all my complaints on my trip from Grand Junction to Denver so I will repeat it here! I was absolutely appalled that I had to pay for a regular seat that I choose 24 hrs before boarding! Also I checked my large bag which I had to pay for as well, and by the time I boarded all the room in the bins were gone so also had to check that one. I noticed people pulling out oversized suitcases, bigger than the measurements stated for carry on, and also large pack packs stuffed full! So these people were taking up 2 or 3 spaces that the rest of us should have been able to use but couldn’t! NoTV on the flight! Thankfully I had downloaded the United Airlines app and was able to watch movies on my phone. Don’t remember the last time I flew in a plane with no movie screens!

I was appalled to have to pay for just a regular seat when I went to book 24 hrs before my flight! Because it was only an hour flight I didn’t choose a seat from Grand Junction to Denver, but I did for Toronto and had to pay just to choose a regular available seat! In my 60+ years of flying this was the first time I have heard of this. Also, allowing people to bring on “huge “ suitcases, not carry on size, but much bigger, and then a large pack pack stuffed. So they take up all the room in the overhead bins and if we are later boarding, there is no room so we have to check our small carry on. I have already paid for and checked in one bag! I certainly will not choose to fly with United again unless it is the “only” airline available!

Easy boarding, roomy seats, plenty of good food, very helpful snd friendly staff. Very smooth flight! Only thing that could have been better was to have cranberry juice. Women like this as it helps avoid UTI’s and not as sweet as other juices.

The crew was friendly, the seats are too small. Air travel is barely tolerable anymore.

Food was icecold or frozen including breakfast. Hopeless service. Rude crew.

The flight was very uncomfortable and there was no snacks served for the 13 hours international flight. In addition, the flight was delayed 3 hours

Book cheap flights from Seattle to Australia

Recent return flight deals

1/6Sat
1 stopHawaiian Airlines
18h 10mSEA-SYD
8/6Sat
1 stopHawaiian Airlines
17h 05mSYD-SEA
$1,422
2/11Sat
1 stopHawaiian Airlines
18h 05mSEA-SYD
17/11Sun
2 stopsHawaiian Airlines
20h 10mSYD-SEA
$1,496
15/9Sun
1 stopSingapore Airlines
27h 55mSEA-PER
7/10Mon
1 stopSingapore Airlines
41h 20mPER-SEA
$1,605
16/10Wed
1 stopUnited Airlines
21h 34mSEA-SYD
29/10Tue
1 stopUnited Airlines
17h 51mSYD-SEA
$1,652
1/9Sun
2 stopsUnited Airlines
25h 20mSEA-SYD
16/9Mon
1 stopUnited Airlines
18h 26mSYD-SEA
$1,658
15/9Sun
1 stopSingapore Airlines
22h 40mSEA-PER
7/10Mon
2 stopsSingapore Airlines
36h 49mPER-SEA
$1,879
21/10Mon
2 stopsAir Canada
23h 30mSEA-MEL
18/11Mon
2 stopsAir Canada
20h 16mMEL-SEA
$1,989
4/8Sun
2 stopsAir Canada
26h 55mSEA-MEL
17/8Sat
2 stopsAir Canada
25h 34mMEL-SEA
$2,044
4/8Sun
2 stopsQantas Airways
23h 50mSEA-MEL
17/8Sat
1 stopQantas Airways
21h 51mMEL-SEA
$2,662
10/8Sat
2 stopsQantas Airways
23h 58mSEA-MEL
17/8Sat
1 stopQantas Airways
21h 51mMEL-SEA
$2,774

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Recent one-way flight deals

8/8Thu
1 stop
36h 55mSEA-SYD
$625
18/6Tue
1 stop
28h 06mSEA-MEL
$744
25/7Thu
1 stop
36h 55mSEA-SYD
$829
25/9Wed
2 stopsQantas Airways
23h 18mSEA-OOL
$1,727
7/8Wed
2 stopsUnited Airlines
37h 25mSEA-SYD
$1,750
25/9Wed
1 stopQantas Airways
19h 59mSEA-BNE
$1,771
15/6Sat
1 stopAir Canada
27h 20mSEA-BNE
$1,824
30/7Tue
2 stopsUnited Airlines
37h 30mSEA-SYD
$1,944
7/10Mon
2 stopsSingapore Airlines
34h 04mSEA-PER
$2,638
7/10Mon
3 stopsSingapore Airlines
50h 35mSEA-PER
$3,302

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Last minute flights from Seattle to Australia

Last minute flight, train and bus deals

9/5Thu
multi-stopHawaiian Airlines
40h 25mSEA-SYD
18/5Sat
multi-stopHawaiian Airlines
43h 00mSYD-SEA
$1,573
9/5Thu
multi-stopHawaiian Airlines
40h 25mSEA-SYD
18/5Sat
multi-stopHawaiian Airlines
17h 40mSYD-SEA
$1,900
9/5Thu
multi-stop
32h 35mSEA-SYD
11/5Sat
multi-stop
23h 00mSYD-SEA
$2,461
9/5Thu
multi-stop
24h 10mSEA-SYD
11/5Sat
multi-stop
23h 00mSYD-SEA
$2,936
9/5Thu
multi-stopAsiana Airlines
24h 10mSEA-SYD
18/5Sat
multi-stopAsiana Airlines
44h 15mSYD-SEA
$3,081
9/5Thu
multi-stopQatar Airways
42h 10mSEA-SYD
11/5Sat
multi-stopQatar Airways
55h 40mSYD-SEA
$3,170
8/5Wed
multi-stop
35h 15mSEA-SYD
11/5Sat
multi-stop
23h 00mSYD-SEA
$3,222
9/5Thu
multi-stopAsiana Airlines
24h 10mSEA-SYD
11/5Sat
multi-stopAsiana Airlines
44h 15mSYD-SEA
$3,252
9/5Thu
multi-stopUnited Airlines
30h 30mSEA-SYD
11/5Sat
multi-stopUnited Airlines
35h 48mSYD-SEA
$4,373
11/5Sat
multi-stopAir Canada
54h 40mSEA-SYD
22/5Wed
multi-stopAir Canada
52h 56mSYD-SEA
$20,964

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Seattle - Australia Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Australia - Seattle

Cabin classes: