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?

Users have found that flying from Seattle to Adelaide on a Thursday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

A simple way to save on the total cost of your ticket is to fly from Seattle to Adelaide in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the evening.

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

August can be a great time to fly to Adelaide from Seattle with a flight ticket averaging about $1,215. Cheapflights users have found deals in the month of August for as cheap as $971. The most expensive prices can be found in the month of January.

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

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.

Can I find flights from Seattle to Adelaide for under $1,800 on Cheapflights?

Yes, there are multiple flights from Seattle to Adelaide for under $1,800. The cheapest flight booked recently is on Air Canada for just $1,759, but on average you can expect to pay $2,672.

What are the cheapest airlines flying from Seattle to Adelaide round-trip?

Air Canada, at $1,759, was found to be the cheapest airline from Seattle to Adelaide.Alternate airlines to your destination round-trip include Qatar Airways and Singapore Airlines.

What are the most popular airlines that fly from Seattle to Adelaide?

Consider Air Canada, Cathay Pacific or Delta when booking your flight. These represent the most popular airlines when flying from Seattle to Adelaide.

What are the cheapest flights from Seattle to Adelaide?

Looking for the cheapest flight from Seattle to Adelaide? While on average our users pay $1,543, our data indicates the cheapest price to be $788. The most popular route (Seattle/Tacoma Intl - Adelaide), is priced around $6,638.

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 = $1.34
Average temperature for October in Adelaide
69.8 °F
Avg rainfall for October in Adelaide
1.5 ″

Airports servicing Seattle

Airports servicing Adelaide

Top 4 airlines flying from Seattle/Tacoma Intl 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%
Qantas Airways
$904 $1,276 No cancel fee 74%
Air Canada
$1,032 $1,187 No cancel fee 67%
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