Cheap flights from Sydney to Seattle from $686
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Seattle departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Sydney to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
The month of February is, on average, the cheapest month to fly to Seattle from Sydney, with most prices found around $1,517. If you are unable to visit Seattle during the month of February, then departing from Sydney during the month March is also very affordable. Most momondo users find prices during this month for around $1,564.
What is the cheapest day to depart on your flight to Seattle?
The cheapest day to depart from Sydney to Seattle is on a Thursday. Travellers who choose to depart for Seattle on a Thursday will often find tickets for as low as $1,568. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to Seattle for around $1,802.
What is the cheapest time of day to depart on your flight to Seattle?
According to our data, the cheapest time of day to fly to Seattle is at midday. momondo users have found flights departing from Sydney to Seattle at midday for as low as $1,494. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seattle is in the afternoon when prices are around $1,824.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $1,713 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Sydney for as low as $1,454 on momondo.
What is the cheapest airline that flies from Sydney Kingsford Smith to Seattle/Tacoma Intl?
Qantas Airways, Delta, and American Airlines are the most popular carriers operating from Sydney Kingsford Smith to Seattle/Tacoma Intl
Which airlines fly to Seattle?
Air Canada, United Airlines and Qantas Airways are the top three most popular airlines that fly to Seattle from Sydney according to our data. Air Canada is the first choice among our users, with 36% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 13 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
When to book flights from Sydney to Seattle
Cheap Sydney to Seattle (SYD to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sydney to Seattle
How far is Sydney Kingsford Smith to Seattle/Tacoma Intl by plane?
There are 12462.2 km between Sydney Kingsford Smith and Seattle/Tacoma Intl. A reasonable flight in good conditions will take 17h 01m.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?
The number of operators available for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport is 13 as of July 2025.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sydney to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Sydney to Seattle is Air Canada (29% of total bookings). The next most popular airlines are United Airlines (23%), Qantas Airways (14%), and Hawaiian Airlines (13%).
Best airlines flying from Sydney to Seattle
Compare and see reviews for airlines that fly from Sydney to Seattle with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $349 | Free cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $1,211 | Free cancellation | Rating 7.4 8,851 reviews | |||
| PriceFrom $1,231 | Free cancellation | Rating 8.2 452 reviews | |||
| PriceFrom $1,235 | Free cancellation | Rating 7.1 9,664 reviews | |||
| PriceFrom $1,263 | Free cancellation | Rating 7.5 868 reviews | |||
| PriceFrom $1,311 | Free cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $1,324 | Free cancellation | Rating 7.2 888 reviews | |||
| PriceFrom $1,354 | Free cancellation | Rating 7.8 2,544 reviews | |||
| PriceFrom $1,367 | Free cancellation | Rating 8.0 488 reviews | |||
| PriceFrom $1,417 | Free cancellation | Rating 7.2 10,000 reviews |
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Sydney to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sydney to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from Sydney to Seattle with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seattle from Sydney which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Sydney to Seattle?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to Seattle.
I’m not ready to book a flight from Sydney to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Sydney and alert you when they change.