Cheap flights from Adelaide to Seattle from $811
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Adelaide to Seattle departing on 27/8. 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 Adelaide 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 November is, on average, the cheapest month to fly to Seattle from Adelaide, with most prices found around $1,471. If you are unable to visit Seattle during the month of November, then departing from Adelaide during the month March is also very affordable. Most momondo users find prices during this month for around $1,719.
What is the cheapest day to depart on your flight to Seattle?
The cheapest day to depart from Adelaide to Seattle is on a Tuesday. Travellers who choose to depart for Seattle on a Tuesday will often find tickets for as low as $1,621. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Adelaide to Seattle for around $2,353.
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 in the afternoon. momondo users have found flights departing from Adelaide to Seattle in the afternoon for as low as $1,802. 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 at midday when prices are around $2,416.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Adelaide when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $2,039 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Adelaide for as low as $1,372 on momondo.
What is the cheapest airline that flies from Adelaide to Seattle/Tacoma Intl?
Qantas Airways, United Airlines, and Qatar Airways are the most popular carriers operating from Adelaide to Seattle/Tacoma Intl
Which airlines fly to Seattle?
Virgin Australia, Singapore Airlines and United Airlines are the top three most popular airlines that fly to Seattle from Adelaide according to our data. Virgin Australia is the first choice among our users, with 42% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 5 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 Adelaide to Seattle
Cheap Adelaide to Seattle (ADL to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Adelaide to Seattle
How far is Adelaide to Seattle/Tacoma Intl by plane?
Adelaide and Seattle/Tacoma Intl are 13407.3 km apart from one another. A reasonable flight in good conditions will take 23h 55m.
When did momondo last update prices for flights from Adelaide Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Adelaide Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Adelaide Airport to Seattle/Tacoma Intl Airport?
There are 5 operators available for flights from Adelaide Airport to Seattle/Tacoma Intl Airport as of June 2025.
How old do you have to be to fly from Adelaide Airport to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Adelaide Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Adelaide to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Adelaide to Seattle is Virgin Australia (38% of total bookings). The next most popular airlines are Singapore Airlines (20%), United Airlines (16%), and Qantas Airways (16%).
Best airlines flying from Adelaide to Seattle
Compare and see reviews for airlines that fly from Adelaide to Seattle with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $973 | Free cancellation | Rating 7.4 8,793 reviews | |||
| PriceFrom $1,433 | Free cancellation | Rating 8.1 1,304 reviews | |||
| PriceFrom $1,468 | Free cancellation | Rating 7.5 854 reviews | |||
| PriceFrom $1,485 | Free cancellation | Rating 7.1 9,542 reviews | |||
| PriceFrom $1,744 | Free cancellation | Rating 7.5 407 reviews |
Travelling to a place near Seattle?
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Why should I use momondo to find a flight deal from Adelaide to Seattle?
Finding the right flight to Seattle from Adelaide is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.
Can I find flights from Adelaide to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Adelaide to Seattle flights to just show those with flexible booking policies.
How can momondo help me find flights from Adelaide 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 Adelaide to Seattle.
I’m not ready to book a flight from Adelaide to Seattle right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Seattle from Adelaide. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.