Cheap flights from Seattle to Brisbane from $566

The cheapest month to fly to Brisbane from Seattle is in February. Flight prices, which tend to average around $884, are often lower during this time because this is during the off-season. If you are unable to visit Brisbane during the month of February, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around $989.

You are more likely to see cheaper flights to Brisbane from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Brisbane for around $1,214 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brisbane from Seattle for as low as $1,049 on momondo.

You could potentially save up to 38% on your flight if you consider stops on a Seattle to Brisbane flight.

As of August 2026, prices for Seattle to Brisbane flights are approximately 36% cheaper when compared to flights at the same time last year.

Cathay Pacific and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Brisbane

Air Canada, United Airlines and Qantas Airways are the top three most popular airlines that fly to Brisbane from Seattle according to our data. Air Canada is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Brisbane. Keep in mind that there are 3 different airlines that fly to Brisbane on a routine basis, so you have a few additional options to choose from.

Vancouver (YVR) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Flights via Hong Kong (HKG) offer the lowest average round-trip price of $1,037.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 18h 38m.

Los Angeles (LAX) has the shortest average layover time for this route: 2h 50m.