Cheap Flights from Seattle to Adelaide from $1,120

Frequently Asked Questions

• What are the cheapest flights from Seattle to Adelaide (SEA-ADL)?

  Based on Trip.com data, Qatar Airways offers one-way fares as low as $1,120 on Cheapest nonstop routes (e.g. SEA to ADL on Sat, Aug 29), while Qatar Airways offers Cheapest nonstop round-trips from $1,327 departing on Fri, Aug 21 and returning on Fri, Aug 28.

• Which airlines offer flights from Seattle to Adelaide?

  At the moment, several airlines serve connecting flights from Seattle to Adelaide, including: United Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from Seattle to Adelaide?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Adelaide is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Seattle to Adelaide?

  To find best deals on flights from Seattle to Adelaide, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Aug 29, with one-way flights priced at just $1,120.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Qatar Airways.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Adelaide travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Seattle (SEA) to Adelaide (ADL) the cheapest?

  The cheapest months to fly from Seattle to Adelaide is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Seattle to Adelaide on?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Seattle to Adelaide on July 28, 2026 with Singapore Airlines, with prices starting at $1,292.

• Which airports can I fly to for Adelaide from Seattle?

  You can land at any one of the following hubs in Adelaide, with Seattle-Tacoma International Airport to Adelaide Airport (SEA-ADL) is by far the most common option on this route: Adelaide Airport (ADL).

• Is there any time difference between Seattle and Adelaide?

  The time difference between Adelaide and Seattle is 17h.

• How do I change or cancel my ticket from Seattle to Adelaide?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.