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SEA - SYD

$752 Find cheap flights from Seattle to Sydney

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 Sydney departing on 5/6. 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
Sat 1/6
Sat 8/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Sydney, 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 Seattle to Sydney, as well as popular online travel agencies
In the last 7 days, travellers have searched 43,740,974 times on KAYAK, and here's why:

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Cheap flight deals from Seattle to Sydney (SEA-SYD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Sydney 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 and deals for you by selecting your travel dates.
Choose your dates
08:35 - 19:45SEA-SYD
18h 10m1 stop
21:40 - 21:45SYD-SEA
17h 05m1 stop
$1,447Hawaiian Airlines
Find Deal
Sat, 1 Jun - Sat, 8 Jun
07:40 - 19:45SEA-SYD
18h 05m1 stop
21:40 - 21:35SYD-SEA
18h 55m1 stop
$1,448Hawaiian Airlines
Find Deal
Mon, 28 Oct - Fri, 8 Nov
10:30 - 14:40SEA-SYD
35h 10m2 stops
16:20 - 21:45SYD-SEA
22h 25m1 stop
$1,579
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Wed, 5 Jun - Mon, 10 Jun
20:58 - 14:40SEA-SYD
24h 42m1 stop
16:20 - 08:15SYD-SEA
32h 55m2 stops
$1,616
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Fri, 14 Jun - Fri, 6 Sep
08:55 - 07:00SEA-SYD
29h 05m1 stop
09:30 - 21:59SYD-SEA
29h 29m2 stops
$1,682United Airlines
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Sun, 1 Sep - Wed, 11 Sep
15:52 - 07:05SEA-SYD
22h 13m2 stops
09:10 - 19:45SYD-SEA
27h 35m2 stops
$1,689American Airlines
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Sun, 1 Sep - Mon, 16 Sep
11:03 - 06:55SEA-SYD
26h 52m2 stops
10:20 - 11:35SYD-SEA
18h 15m1 stop
$1,690United Airlines
Find Deal
Tue, 30 Jul - Mon, 5 Aug
19:05 - 07:20SEA-SYD
19h 15m1 stop
09:20 - 09:57SYD-SEA
17h 37m1 stop
$1,817Air Canada
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Fri, 31 May - Sun, 9 Jun
19:05 - 07:20SEA-SYD
19h 15m1 stop
09:20 - 09:57SYD-SEA
17h 37m1 stop
$1,883Air Canada
Find Deal
Fri, 31 May - Thu, 13 Jun
11:42 - 07:05SEA-SYD
26h 23m2 stops
09:15 - 20:50SYD-SEA
28h 35m1 stop
$2,048American Airlines
Find Deal
Mon, 20 May - Mon, 27 May

Flights from Seattle to Sydney - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Seattle to Sydney?

The average price of all flights from Seattle to Sydney clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to Sydney, you should consider leaving on a Saturday and avoid Tuesdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Sydney, 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 Seattle to Sydney is September, where tickets cost $1,755 on average. On the other hand, the most expensive months are December and January, where the average cost of tickets is $3,504 and $2,730 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Sydney, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 69 days before departure.

Which airlines provide the cheapest flights from Seattle to Sydney?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Hawaiian Airlines offered the best one-way deal for that route, at $1,189. KAYAK users also found Seattle to Sydney return flights on Hawaiian Airlines from $1,447 and on United Airlines from $1,682.

Good to know

Low season

June

High season

December

Cheapest flight

$752
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly (52% more expensive on average)
Flight from Seattle to Sydney

When to book flights from Seattle to Sydney

Are your dates flexible? Find out the best times to travel from Seattle to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 Seattle to Sydney

  • Are there direct flights from Seattle to Sydney?

    Yes, there are direct flights from Seattle/Tacoma International (SEA) to Sydney/Kingsford Smith (SYD). There is a range of direct flights to choose from, such as Delta, Hawaiian, Fiji Airways, and many more. However, there are several indirect flights to choose from if you are looking for a cheaper flight.

  • Are there any hotels in Sydney Airport (SYD)?

    Yes, there are multiple hotels near and at the airport in Sydney that also provides shuttle services to and from the airport. If you can't stay outside, look no further than the hotels at the airport. These include Rydges Sydney Airport Hotel, Citadines Connect Airport Hotel, and Travelodge Hotel Sydney Airport.

  • What is the best way to get to Sydney CBD from SYD?

    There are several ways to get to Sydney CBD from the airport. You can use a train which will take about 17min or rideshare app services which will take 20min. Alternatively, you can take public transport, a bus which will take 28mins.

  • What is the best way to get to SEA from downtown Seattle?

    It takes about 20min to get to SEA from downtown Seattle by bus. You can order a taxi or use a shuttle. The shuttle runs from the terminals at regular intervals between SEA and downtown.

  • What is the cheapest flight from Seattle to Sydney?

    In the last 3 days, the lowest price for a flight from Seattle to Sydney was $488 for a one-way ticket and $939 for a return.

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

    Seattle and Sydney are both served by 1 main airport. You will leave Seattle from Seattle/Tacoma Intl and will be arriving at Sydney Kingsford Smith.

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

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

  • Which airline alliances offer flights from Seattle to Sydney?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Sydney are United Airlines and Air Canada. With an average price for the route of $1,837 and an overall rating of 7.3, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $1,715 and an overall rating of 7.0.

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

    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 Sydney.

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

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

    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 Sydney 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 Sydney?

    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 Sydney 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 a cheap flight from Seattle to Sydney

  • If you are flying out of Seattle/Tacoma International Airport (SEA) and would like to park your car, SEA offers various options at reasonable prices, depending on how long you plan to park. If you are planning for long-term parking, Park n Jet, located 1mile from Seattle/Tacoma International Airport, is the best choice. For short-term parking, you can use Aeroparking, which is located 1.2 miles from the airport. Also, there is an airport shuttle dropping passengers at each terminal.
  • If you are traveling with kids from Seattle/Tacoma International Airport (SEA) to Sydney Kingsford Smith International Airport (SYD), there are multiple play areas and food courts to enjoy before your flight to SYD. The play areas are located across Delta Sky Lounge between Central terminals and Gate A. They are equipped with many toys for kids.
  • If you are looking to spend the night close to the airport for an early flight, look no further than the best hotels in Seattle, which offer several excellent amenities. Most of them are easily accessible from the airport. Some of the hotels include Double Tree by Hilton, which is located 1.2 miles from the airport, Hampton Inn & Suites Seattle, located at 1.3 miles, and Red Lion Hotel Seattle Airport, which is 1 mile from the airport.
  • SYD offers transport services out of the airport for passengers on a tight schedule upon request. To use these services, call your airline to inform them how best they can help ahead of time. You can choose between a shared ride or express reservation, which you can book online in advance.
  • It is recommended that you arrive a few hours before your trip if traveling out of SEA. If you go to the SEA website ahead of time, you can view the security line wait times to plan ahead of time.
See more tips

Top airlines flying from Seattle to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Sydney. 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 Seattle to Sydney? 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.
7.3
United AirlinesOverall score based on 11143 reviews
8.1Crew
7.7Boarding
7.2Comfort
7.1Entertainment
6.7Food
Airline reviews

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.

2.0 Mediocretimothy, May 2024SBA - DEN
Read more about United Airlines reviews

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

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Food was terrible Not many options Stewards dont care Delay

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

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

Due to a strike taking place with the airline, it negatively impacted my flight in multiple ways. My flight was delayed over 2 hours and the food served was mediocre at best.

Book cheap flights from Seattle to Sydney

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Sydney found on KAYAK in the last 72 hours.
5/6Wed
2 stops
35h 10mSEA-SYD
$752
26/7Fri
1 stop
36h 55mSEA-SYD
$755
12/6Wed
2 stopsHawaiian Airlines
40h 15mSEA-SYD
$1,189
25/7Thu
1 stopHawaiian Airlines
18h 00mSEA-SYD
$1,314
20/8Tue
1 stopChina Airlines
40h 05mSEA-SYD
$1,410
1/6Sat
2 stopsFiji Airways
37h 15mSEA-SYD
$1,511
31/7Wed
2 stopsFiji Airways
25h 00mSEA-SYD
$1,533
23/7Tue
1 stopChina Airlines
40h 05mSEA-SYD
$1,593
3/6Mon
1 stopAir Canada
19h 15mSEA-SYD
$1,652
1/6Sat
1 stopAir Canada
23h 10mSEA-SYD
$1,752

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Last minute flights from Seattle to Sydney

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Sydney that are departing in the next 10 days.
6/5Mon
multi-stop
26h 50mSEA-SYD
11/5Sat
multi-stop
22h 32mSYD-SEA
$2,051
6/5Mon
multi-stop
33h 07mSEA-SYD
11/5Sat
multi-stop
36h 00mSYD-SEA
$2,132
4/5Sat
multi-stop
37h 15mSEA-SYD
25/5Sat
multi-stop
22h 25mSYD-SEA
$2,268
4/5Sat
multi-stopFiji Airways
36h 53mSEA-SYD
25/5Sat
multi-stopFiji Airways
23h 15mSYD-SEA
$2,291
5/5Sun
multi-stopAsiana Airlines
24h 10mSEA-SYD
7/5Tue
multi-stopAsiana Airlines
44h 15mSYD-SEA
$2,588
4/5Sat
multi-stopAsiana Airlines
24h 10mSEA-SYD
8/5Wed
multi-stopAsiana Airlines
44h 15mSYD-SEA
$2,645
4/5Sat
multi-stopAir Canada
25h 10mSEA-SYD
25/5Sat
multi-stopAir Canada
17h 42mSYD-SEA
$2,701
6/5Mon
multi-stopFiji Airways
59h 05mSEA-SYD
11/5Sat
multi-stopFiji Airways
52h 02mSYD-SEA
$2,721
5/5Sun
multi-stopUnited Airlines
23h 10mSEA-SYD
12/5Sun
multi-stopUnited Airlines
21h 18mSYD-SEA
$3,223
3/5Fri
multi-stopAir Canada
19h 15mSEA-SYD
31/5Fri
multi-stopAir Canada
17h 42mSYD-SEA
$19,829

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Seattle - Sydney Flights

Departure:

Seattle (SEA)United States

Destination:

Sydney (SYD)Australia

Return flight deals:

Sydney - Seattle

Cabin classes:

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