Lexi Webster
Planning a trip from Seattle to Australia? There are a variety of airlines to choose from, including Qantas, Alaska, United, Delta Air Lines, Air Canada, EVA Air, Singapore Airlines, Hawaiian Airlines, and Emirates. The Seattle-Tacoma International Airport (SEA) is approximately 13 miles south of Seattle and is a hub for several airlines. When flying to Australia, you will likely have at least one stop, with the cheapest flights involving multiple airlines and connection cities with self-transfers. The average flight time is around 20 hours, and the cheapest flights start at $402.
| Characteristics | Values |
|---|---|
| Airlines | Qantas, Alaska, United, Air Canada, EVA Air, Singapore Airlines, Hawaiian Airlines, Emirates |
| Airports in Australia | Perth Airport (PER), Sydney Kingsford Smith International Airport (SYD), Brisbane Airport (BNE), Melbourne Airport (MEL), Cairns Airport (CNS) |
| Airports in Seattle | Seattle-Tacoma International Airport (SEA) |
| Minimum Booking Time | 1 week |
| Cheapest Month | March |
| Cheapest Flight | $402 |
| High Season | January, November, December |
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What You'll Learn
Airlines flying from Seattle to Australia
When flying from Seattle to Australia, you will be departing from Seattle-Tacoma International Airport (SEA), located about 13 miles south of Seattle. As of April 2025, there are 11 operators available for flights from Seattle to Australia.
Flights from Seattle to Sydney, Australia, will land at Sydney Kingsford Smith International Airport (SYD). It is unlikely that you will find a non-stop flight from Seattle to Sydney, and most flights will have at least one stop. Several airlines operate flights with one connection, including Air Canada, which stops in Vancouver, Qantas and Delta, which stop in Los Angeles, and ANA, which stops in Tokyo.
When flying from Seattle to Melbourne, Australia, you will land at Melbourne Airport (MEL). The cheapest flights available tend to involve multiple airlines and connection cities with self-transfers. However, Singapore Airlines offers flights paired with Scoot and Jetstar that are affordable and have only one stop in Singapore Changi International Airport (SIN).
If you want to fly to the north of Queensland, the coastal city of Cairns is a good option. You'll be landing at Cairns Airport (CNS), a hub for Jetstar, Qantas, Australian Airlines, and others.
When flying from Seattle to Brisbane, flights on Qantas, Alaska, or United tend to stop in Los Angeles International Airport (LAX). Air Canada tends to stop in Vancouver International Airport (YVR), EVA Air in Taiwan Taoyuan International Airport (TPE), and Singapore Airlines in Singapore Changi International Airport (SIN).
Alaska Airlines is one of the most sustainable airlines operating flights from Seattle to Adelaide Airport. They are making strides to achieve net-zero carbon emissions by 2040 by increasing operational efficiency, investing in fleet modernisation, new technology, sustainable aviation fuels, and high-quality carbon removal techniques.
The cheapest month to fly from Seattle to Australia is March, with an average ticket price of $750. High season is considered to be January, November, and December, with December being the most expensive month to fly. Morning departures are around 17% cheaper than evening flights, and the cheapest day to fly is Friday, with Thursday being the most expensive.
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Airports in Australia
When flying from Seattle to Australia, you will be departing from the Seattle-Tacoma International Airport (SEA). From there, you can fly into several airports in Australia, depending on your destination.
If you are flying to Sydney, you will land at Sydney Kingsford Smith International Airport (SYD). It is unlikely that you will find a non-stop flight from Seattle to Sydney, and you should expect at least one connection. Airlines that operate on this route include Air Canada, which stops in Vancouver, Qantas and Delta, which stop in Los Angeles, and ANA, which stops in Tokyo.
For those travelling to Melbourne, you will be landing at Melbourne Airport (MEL). Flights on this route tend to involve multiple airlines and connection cities with self-transfers. However, Singapore Airlines, in partnership with Scoot and Jetstar, offers an affordable option with only one stop in Singapore Changi International Airport.
If your destination is Brisbane, you will arrive at Brisbane Airport (BNE). Flights on Qantas, Alaska, or United tend to stop in Los Angeles International Airport, while Air Canada usually stops in Vancouver International Airport.
Additionally, if you are flying to Perth in Western Australia, you will land at Perth Airport (PER). One option for this route is to fly with Qatar Airways, which includes a stop in Hamad International Airport, Doha.
Finally, if you are heading to Adelaide, you may consider flying with Alaska Airlines, which is known for its efforts to achieve net-zero carbon emissions by 2040.
Other international airports in Australia include Port Hedland International Airport, Sunshine Coast Airport, and Western Sydney Airport.
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Travel documents required
When flying from Seattle to Australia, it is important to carry the necessary travel documents. The documents you need to carry can vary based on your itinerary and personal situation. However, here are some general guidelines:
Passport:
It is recommended that you have a passport that is valid for at least six months after your planned arrival date in Australia. Your passport will be required for check-in and boarding. Keep a printed copy of your e-visa (if applicable) to show along with your passport.
Photo Identification:
If you are travelling on a domestic flight within Australia or on a domestic flight departing from an international terminal, you will need to carry photo identification. This can include a driver's license, passport, or social security card. Your booking name must match the ID you are using.
Visa:
Check with the Australian Government Department of Home Affairs to determine if you need a visa for your travel to Australia. The requirement for a visa may depend on your nationality and the purpose of your visit. You can also use the IATA Travel Centre to find out if you need a visa for Australia or a transit visa for any countries you may be connecting through.
Travel with Children:
If you are travelling with children, additional documentation may be required. For unaccompanied minors, there may be specific requirements and restrictions, so be sure to check with your airline. When travelling as part of an organised group, children must be accompanied by an adult with a letter of authority and the child's relevant travel documents.
It is always a good idea to check with your airline or a trusted third party for the most up-to-date and personalised advice regarding travel documents.
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Booking in advance
When booking a flight from Seattle to Australia, it is important to plan ahead to secure the best deals and prices. While it is possible to find last-minute deals, these are not always available and it is generally recommended to book at least one week in advance to get a below-average price.
There are several factors to consider when booking in advance. Firstly, the time of year can have a significant impact on flight prices. High season, which includes January, November, and December, tends to be the most expensive time to fly, with December being the costliest month on average. On the other hand, March is typically the cheapest month to fly from Seattle to Australia, with average flight prices dropping to around $750.
Secondly, the day of the week and time of day can also affect flight prices. For maximum savings, consider departing on a Friday at noon, when fares are usually the lowest. Thursday noon flights, on the other hand, tend to be the most expensive. Additionally, morning departures are generally around 17% cheaper than evening flights, so choosing an early flight can help you save money.
To find the best deals, it is advisable to compare prices across different airlines and travel sites. Websites like Momondo and KAYAK allow you to search and compare airfares from multiple airlines and agents, making it easier to find the most affordable option. These sites also offer features like price alerts, which can notify you when prices change, and flexible date searches, which can show you flight options up to three days before and after your preferred dates.
By booking in advance, you can take advantage of these tools and secure the most convenient and cost-effective flight for your trip from Seattle to Australia.
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Layovers and connections
When flying from Seattle to Australia, it is highly unlikely that you will find a non-stop flight. Most flights will involve at least one layover or connection, with some flights involving multiple layovers and connections. The number of layovers and the length of each layover can vary depending on the airline, the departure and arrival airports, and the class of service.
For example, flights from Seattle-Tacoma International Airport to Perth in Western Australia typically include at least one stop. Flights operated by Qantas, Alaska, or United often include a layover in Los Angeles International Airport, while Air Canada flights may include a stop in Vancouver International Airport. Similarly, flights to Brisbane Airport will also have at least one stop, with common layovers in Los Angeles or Vancouver, depending on the airline.
If you are flying to Sydney, you will most likely have a layover as well. Air Canada flights to Sydney, for instance, typically stop in Vancouver, while Qantas and Delta flights may include a layover in Los Angeles. ANA flights, on the other hand, connect through Tokyo. In addition, Singapore Airlines offers flights with a single stop in Singapore Changi International Airport, in partnership with Scoot and Jetstar.
When flying to Melbourne, you will almost certainly have at least one layover. The cheapest options often involve multiple layovers with self-transfers, but you can also find flights with a single stop in Singapore, as offered by Singapore Airlines. It is worth noting that the duration of your layovers can vary significantly, from a quick hour-long stop to a more extended layover that may last several hours or more.
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Frequently asked questions
Flight prices vary depending on the airline and the time of year. In general, flights range from $402 to $7,821 for a round trip. The cheapest month to fly from Seattle to Australia is March, and it is recommended to book at least one week in advance.
Popular airlines flying from Seattle to Australia include Qantas, Alaska Airlines, United Airlines, Emirates, Hawaiian Airlines, and Singapore Airlines.
It is unlikely to find a non-stop flight from Seattle to Sydney, Australia. Most flights will have at least one stopover, with some having multiple connections.
Sydney is home to the World Heritage-listed Opera House and the Harbour Bridge. Other attractions include the Taronga Zoo, the Sydney Fish Market, Pitt St Mall for shopping, and the neighbourhoods of Newtown, Surry Hills, Glebe, and Paddington for their eclectic vibes.
It is recommended to have multiple documents, such as a national ID card or driver's license, and a passport valid for at least six months after your planned arrival in Australia.
