Cheap flights from Seattle (SEA) to Adelaide (ADL)

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How to find the cheapest flight from
Seattle (SEA) to Adelaide (ADL)

All the information you need to plan the best SEA to ADL flight in 2021: compare Seattle to Adelaide flight prices with the expected peak season, weather and rainfall in Adelaide.
What is the cheapest day to fly round-trip from Seattle to Adelaide?

Flights from Seattle to Adelaide are found to be more expensive on Thursday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Adelaide.

When is the cheapest time to fly from Seattle to Adelaide (SEA - ADL)?

Unlike in the evening, when flights are generally more expensive, you can save up to 34% on flights from Seattle to Adelaide by exploring options for tickets in the morning.

One-way flights to Adelaide from Seattle

The cheapest one-way flights from Seattle to Adelaide
2:10 pm - 12:20 pm
Qatar Airways
1 Stop
28h 40m
SEA - ADL
Qatar Airways
$12,393
Bravofly
2:10 pm - 12:20 pm
Qatar Airways
1 Stop
28h 40m
SEA - ADL
Qatar Airways
$12,739
qatarairways.com
1:55 pm - 1:00 pm
Multiple Airlines
2 Stops
29h 35m
SEA - ADL
Multiple Airlines
$11,038
Tripmonster

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Adelaide</span> flights.

Flight FAQs

From Seattle to Adelaide

Are flight prices decreasing from Seattle to Adelaide due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Adelaide for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Seattle/Tacoma Intl to Adelaide have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Air New Zealand, Air Canada, and Qantas Airways flying from Seattle/Tacoma Intl to Adelaide have implemented new flexible cancellation policies.

Does it rain more in Seattle or Adelaide?

When traveling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Seattle is roughly less than Adelaide. You can assume this to be the case over the next 9 days.

Is Seattle weather warmer or cooler than Adelaide?

You can imagine temperatures to be in the 82 °F range in January. The weather in Adelaide is generally hotter than Seattle's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

What are the cheapest airlines to fly from Seattle to Adelaide one-way?

For one-way options, check prices for Qatar Airways. According to our data, you can fly for as low as $12,393.

COVID Restrictions

View COVID Travel Restrictions for Adelaide, Australia

Do I need a COVID test to fly to Adelaide from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Adelaide

Most visitors from Seattle/Tacoma Intl will not be allowed to enter Adelaide.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Adelaide.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Adelaide.

Documents
Travel Authorization Form - Travelers who are not in an exempt category may request an individual exemption to Australia's travel restrictions using this form.


Do I need a test to fly back to Seattle from Adelaide?

Returning to Seattle/Tacoma Intl from Adelaide

COVID-19 testing requirements
Visitors from Adelaide must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Adelaide are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Adelaide, Australia

Destination information for Adelaide

Things to know before you go - useful duration and weather info for your trip from Seattle to Adelaide.
Today's exchange rate
$1 = $1.37
Average temperature for August in Adelaide
60.8 °F
Avg rainfall for August in Adelaide
1.9 ″

Airports servicing Seattle

Airports servicing Adelaide

Top 4 airlines flying from Seattle to Adelaide

The chart below displays the airlines Cheapflights users traveling from Seattle to Adelaide choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Air New Zealand
$728 $962 No cancel fee 78%
Virgin Australia
$892 $1,082 No cancel fee 80%
Air Canada
$1,032 $1,187 No cancel fee 67%
Qantas Airways
$904 $1,276 No cancel fee 74%
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