ADL - SEA

$860 Find Cheap Flights from Adelaide to Seattle – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
$1,942
Typical prices: $1,501-$1,902
Multiple Airlines
Sat 24/11Sat 15/12
ADL - SEA • 2 stops
Cheapest one-way flight
$860
Typical prices: $1,033-$1,134
Multiple Airlines
Sat 3/3
ADL - SEA • 3 stops
Direct flights
Not available
There are currently no direct flights between Adelaide and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
July
Cheapest • 19% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
San Francisco (SFO)
Cheapest • Avg $1,501 (return)
Singapore Changi (SIN)
Shortest trip • 34h 20m (one-way)
Insights
Insights
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We hope you enjoy your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Adelaide to Seattle (ADL-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Adelaide to Seattle

Tue, 24 Nov - Tue, 15 Dec
Multiple Airlines Logo
06:00 - 09:27ADL  Adelaide-SEA Seattle/Tacoma Intl
21h 57m2 stops Sydney Kingsford Smith Vancouver Intl
Multiple Airlines Logo
15:15 - 12:35SEA  Seattle/Tacoma Intl-ADL Adelaide
26h 50m2 stops Vancouver Intl Sydney Kingsford Smith
$1,942Multiple Airlines
Tue, 24 Nov - Tue, 15 Dec
Air Canada Logo
19:55 - 09:27ADL  Adelaide-SEA Seattle/Tacoma Intl
32h 02m2 stops Sydney Kingsford Smith Vancouver Intl
Air Canada Logo
08:40 - 13:55SEA  Seattle/Tacoma Intl-ADL Adelaide
34h 45m2 stops Vancouver Intl Sydney Kingsford Smith
$2,271Air Canada
Tue, 24 Nov - Tue, 15 Dec
Air Canada Logo
19:55 - 09:27ADL  Adelaide-SEA Seattle/Tacoma Intl
32h 02m2 stops Sydney Kingsford Smith Vancouver Intl
Air Canada Logo
08:40 - 18:10SEA  Seattle/Tacoma Intl-ADL Adelaide
39h 00m2 stops Vancouver Intl Sydney Kingsford Smith
$2,535Air Canada
Tue, 24 Nov - Tue, 15 Dec
Multiple Airlines Logo
06:00 - 13:08ADL  Adelaide-SEA Seattle/Tacoma Intl
25h 38m2 stops Sydney Kingsford Smith Los Angeles
Multiple Airlines Logo
13:36 - 11:00SEA  Seattle/Tacoma Intl-ADL Adelaide
26h 54m3 stops San Francisco Los Angeles Sydney Kingsford Smith
$2,764Multiple Airlines
Tue, 15 Dec - Mon, 21 Dec
Multiple Airlines Logo
06:25 - 18:10ADL  Adelaide-SEA Seattle/Tacoma Intl
30h 15m2 stops Denpasar Bali Ngurah Rai Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
00:10 - 06:15SEA  Seattle/Tacoma Intl-ADL Adelaide
35h 35m2 stops Taipei City Taiwan Taoyuan Intl Denpasar Bali Ngurah Rai
$2,816Multiple Airlines
Tue, 24 Nov - Tue, 15 Dec
Multiple Airlines Logo
06:25 - 13:08ADL  Adelaide-SEA Seattle/Tacoma Intl
25h 13m2 stops Sydney Kingsford Smith Los Angeles
Multiple Airlines Logo
15:55 - 13:30SEA  Seattle/Tacoma Intl-ADL Adelaide
27h 05m3 stops Los Angeles Sydney Kingsford Smith Melbourne
$3,233Multiple Airlines
Tue, 24 Nov - Tue, 15 Dec
Multiple Airlines Logo
06:00 - 11:03ADL  Adelaide-SEA Seattle/Tacoma Intl
23h 33m2 stops Sydney Kingsford Smith Los Angeles
Multiple Airlines Logo
15:55 - 13:30SEA  Seattle/Tacoma Intl-ADL Adelaide
27h 05m3 stops Los Angeles Sydney Kingsford Smith Melbourne
$3,238Multiple Airlines
Fri, 18 Dec - Fri, 25 Dec
Virgin Australia Logo
07:15 - 23:58ADL  Adelaide-SEA Seattle/Tacoma Intl
35h 13m2 stops Melbourne Los Angeles
Virgin Australia Logo
17:35 - 13:00SEA  Seattle/Tacoma Intl-ADL Adelaide
24h 55m2 stops San Francisco Melbourne
$3,314Virgin Australia
Fri, 18 Dec - Fri, 25 Dec
Qatar Airways Logo
22:00 - 18:59ADL  Adelaide-SEA Seattle/Tacoma Intl
39h 29m2 stops Doha Hamad Intl Los Angeles
Qatar Airways Logo
15:50 - 17:05SEA  Seattle/Tacoma Intl-ADL Adelaide
30h 45m1 stop Doha Hamad Intl
$3,317Qatar Airways
Fri, 18 Dec - Fri, 25 Dec
Virgin Australia Logo
06:10 - 18:29ADL  Adelaide-SEA Seattle/Tacoma Intl
30h 49m2 stops Brisbane San Francisco
Virgin Australia Logo
05:00 - 16:10SEA  Seattle/Tacoma Intl-ADL Adelaide
40h 40m3 stops San Francisco Brisbane Melbourne
$3,451Virgin Australia
Booking Insights

Price, demand, and travel trends for Adelaide to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from Adelaide to Seattle?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Adelaide to Seattle. It's 20% cheaper than the average day, while Sunday is the most expensive, with prices 51% higher.

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Key details for Adelaide to Seattle flights

Low season

February

Cheapest flight

$860
Beat the crowds with an average 90% drop in travellers.
The most popular month to fly with an average 54% increase in travellers.
One-way flight from Adelaide to Seattle

When to book flights from Adelaide to Seattle

Are your dates flexible? Find out the best times to travel from Adelaide to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Adelaide to Seattle flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Adelaide to Seattle?

    Two cabin classes are available on flights from Adelaide to Seattle:

    • Economy class
    • First Class

  • How long is a flight from Adelaide to Seattle?

    A direct flight from Adelaide to Seattle takes 00m, covering 21,580 km.

  • Do I need a passport to fly from Adelaide to Seattle?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Adelaide to Seattle flight?

    Return flights from Adelaide to Seattle range from $1,501 to $1,902, with an average of $1,719 over the past 12 months. Anything below $1,501 counts as a good deal.

  • Have flight prices from Adelaide to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about $1,942 to $14,532. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Adelaide to Seattle looking right now?

    One-way fares from Adelaide to Seattle are currently lower than usual. Average one-way flight prices are about $995, which is 5% below the typical average for this route.

  • Which car hire options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around $88 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Hertz

  • Which airports can I use when flying from Adelaide to Seattle?

    Flights from Adelaide to Seattle usually depart from Adelaide (ADL) and arrive at Seattle/Tacoma Intl (SEA).

  • Which airports do connecting flights from Adelaide to Seattle pass through?

    Connecting flights from Adelaide to Seattle most commonly pass through:

    • Singapore Changi (SIN) – 71% of one-stop connections
    • San Francisco (SFO) – 29% of one-stop connections

  • Can I save money by using flexible dates for flights from Adelaide to Seattle?

    Yes. Flexible dates can save you up to 47% on flights from Adelaide to Seattle. Tuesday is the cheapest departure day at $1,389 return on average, while Sunday is the most expensive at $2,609, a difference of $1,220.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from Adelaide to Seattle?

    Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time of 19h 20m, compared to 34h 20m via Singapore Changi (SIN).

  • What is the time difference between Adelaide and Seattle?

    Seattle is 18 hours behind Adelaide (Pacific Time vs Central Australia Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Lumen Field, Space Needle, and McCaw Hall. These are among the most viewed places in Seattle on KAYAK.

Your guide to booking Adelaide to Seattle flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average $1,389, about $1,220 less than Sunday fares (47% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Adelaide to Seattle trip for July. Fares historically average $1,389 return in that month – typically $969 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.

    • Coast Gateway Hotel
    • Seattle Airport Marriott
    • Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

More options for your flight from Adelaide to Seattle

Complete your trip to Seattle with a hotel stay or car hire

Car hire in Seattle
Hotels in Seattle
Holidays in Seattle