SEA - ADL

$541 Find Cheap Flights from Seattle to Adelaide

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 Adelaide departing on 8/5. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Adelaide, 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 Adelaide, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Seattle to Adelaide (SEA-ADL)

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

Mon, Jun 23 - Wed, Aug 27
 Logo
2:40 pm - 11:20 amSEA-ADL
28h 10m2 stops
 Logo
12:00 pm - 8:24 pmADL-SEA
24h 54m2 stops
$1,009
Find Deal
Thu, Aug 7 - Thu, Aug 28
Qantas Airways Logo
5:55 pm - 4:15 pmSEA-ADL
29h 50m2 stops
Qantas Airways Logo
6:00 am - 9:33 pmADL-SEA
32h 03m2 stops
$1,038Qantas Airways
Find Deal
Sat, Jul 5 - Thu, Jul 31
Hawaiian Airlines Logo
8:15 am - 8:55 amSEA-ADL
32h 10m2 stops
Hawaiian Airlines Logo
4:30 pm - 9:40 pmADL-SEA
21h 40m2 stops
$1,232Hawaiian Airlines
Find Deal
Wed, Sep 24 - Sun, Oct 5
United Airlines Logo
5:14 pm - 10:05 amSEA-ADL
24h 21m2 stops
United Airlines Logo
6:00 am - 9:15 pmADL-SEA
32h 45m3 stops
$1,274United Airlines
Find Deal
Mon, Jun 23 - Wed, Aug 27
United Airlines Logo
5:14 pm - 11:05 amSEA-ADL
25h 21m2 stops
United Airlines Logo
6:05 am - 8:54 pmADL-SEA
31h 19m3 stops
$1,304United Airlines
Find Deal
Sat, Jul 5 - Thu, Jul 31
Hawaiian Airlines Logo
8:15 am - 8:55 amSEA-ADL
32h 10m2 stops
Hawaiian Airlines Logo
4:30 pm - 9:40 pmADL-SEA
21h 40m2 stops
$1,310Hawaiian Airlines
Find Deal
Sat, Jul 5 - Tue, Aug 26
ANA Logo
4:30 pm - 1:55 pmSEA-ADL
28h 55m2 stops
ANA Logo
4:30 pm - 2:25 pmADL-SEA
38h 25m2 stops
$1,394ANA
Find Deal
Sat, Jul 5 - Thu, Jul 31
Fiji Airways Logo
6:59 pm - 11:35 amSEA-ADL
24h 06m2 stops
Fiji Airways Logo
12:35 pm - 9:06 pmADL-SEA
25h 01m2 stops
$1,427Fiji Airways
Find Deal
Sat, Jul 5 - Sun, Aug 24
ANA Logo
4:30 pm - 1:55 pmSEA-ADL
28h 55m2 stops
ANA Logo
4:30 pm - 2:25 pmADL-SEA
38h 25m2 stops
$1,433ANA
Find Deal
Thu, Aug 7 - Thu, Aug 28
Fiji Airways Logo
6:25 pm - 11:35 amSEA-ADL
24h 40m3 stops
Fiji Airways Logo
12:35 pm - 11:12 pmADL-SEA
51h 07m3 stops
$1,888Fiji Airways
Find Deal
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KAYAK's insights & trends for Seattle to Adelaide flights

Get data-powered insights and trends into flights from Seattle to Adelaide 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 Adelaide?

The average price of all round-trip flights from Seattle to Adelaide clicked on KAYAK for each day over the last 12 months.

When flying from Seattle to Adelaide, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Tuesdays and the most expensive ones on Wednesdays.

Good to know

Low seasonMarch
High seasonDecember
Cheapest flight$541
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Seattle to Adelaide

When to book flights from Seattle to Adelaide

Are your dates flexible? Find out the best times to travel from Seattle to Adelaide 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 Seattle to Adelaide

  • What is the cheapest flight from Seattle to Adelaide?

    In the last 3 days, the lowest price for a flight from Seattle to Adelaide was $541 for a one-way ticket and $1,009 for a round-trip.

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

    Yes

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

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

  • Which airline alliances offer flights from Seattle to Adelaide?

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

  • Which is the best airline for flights from Seattle to Adelaide, Qantas Airways or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Adelaide are Qantas Airways and United Airlines. With an average price for the route of $1,254 and an overall rating of 7.5, Qantas Airways is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,575 and an overall rating of 7.4.

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

    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 Adelaide.

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

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

    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 Adelaide with an airline and back to Seattle with another airline. Booking your flights between Seattle and ADL 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 Seattle to Adelaide?

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

Top airlines flying from Seattle to Adelaide

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Adelaide. 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 Adelaide? 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.
7.5
Qantas AirwaysOverall score based on 854 reviews
7.7Boarding
6.9Food
8.2Crew
7.4Comfort
7.1Entertainment
Airline reviews

Was bumped to a later flight because of inefficiency on part of the airline.

4.0 OkayAnonymous, May 2025SYD - ADL
Read more Qantas Airways reviews

Was bumped to a later flight because of inefficiency on part of the airline.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

Loved the staff. The economy seats could have been bigger.

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

I liked the service, the menu, and the comfort of the seats! Even tho we were seated by the bathrooms, the reclining seats and movie selection was very good, my husband and I didn’t mind at all

Very good as always, stand out airline. The passengers whom choose to stuff baggage that otherwise should be checked-in is a real bother but that's not the airlines doing. A real frustration that passengers just don't want to check-in luggage. This is a pet hate unfortunately.

It’s a two prop flight so I had problems with my ears on re- entering ! But otherwise fine

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

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

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