$545 Cheap Flights from Asuncion (ASU) to Seattle (SEA)

View $545 flight on Sun, Mar 15, 2026Opens in a new window

Popular airlines from Asuncion (ASU-Silvio Pettirossi Intl.) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Asuncion to Seattle (ASU-SEA)

Prices were available within the past 7 days and start at $545 for one-way flights and $870 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Sun, May 3 - Tue, May 19
ASU
Asuncion
SEA
Seattle
$870 Roundtrip, found 5 days ago
$870
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Sun, May 3 from Asuncion to Seattle, returning Tue, May 19, priced at $870 found 5 days ago
LATAM Airlines Group
Sat, Mar 21 - Mon, Mar 30
ASU
Asuncion
SEA
Seattle
$880 Roundtrip, found 5 days ago
$880
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Sat, Mar 21 from Asuncion to Seattle, returning Mon, Mar 30, priced at $880 found 5 days ago
LATAM Airlines Group
Mon, Mar 2 - Sun, Mar 15
ASU
Asuncion
SEA
Seattle
$885 Roundtrip, found 3 days ago
$885
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Mon, Mar 2 from Asuncion to Seattle, returning Sun, Mar 15, priced at $885 found 3 days ago
LATAM Airlines Group
Mon, May 4 - Tue, May 19
ASU
Asuncion
SEA
Seattle
$888 Roundtrip, found 5 days ago
$888
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Mon, May 4 from Asuncion to Seattle, returning Tue, May 19, priced at $888 found 5 days ago
LATAM Airlines Group
Mon, Mar 2 - Sun, Mar 15
ASU
Asuncion
SEA
Seattle
$890 Roundtrip, found 3 days ago
$890
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Mon, Mar 2 from Asuncion to Seattle, returning Sun, Mar 15, priced at $890 found 3 days ago
LATAM Airlines Group
Sat, Mar 21 - Mon, Mar 30
ASU
Asuncion
SEA
Seattle
$898 Roundtrip, found 5 days ago
$898
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Sat, Mar 21 from Asuncion to Seattle, returning Mon, Mar 30, priced at $898 found 5 days ago
LATAM Airlines Group
Tue, May 5 - Sun, May 17
ASU
Asuncion
SEA
Seattle
$903 Roundtrip, found 5 days ago
$903
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Tue, May 5 from Asuncion to Seattle, returning Sun, May 17, priced at $903 found 5 days ago
LATAM Airlines Group
Sun, Feb 1 - Wed, Feb 18
ASU
Asuncion
SEA
Seattle
$905 Roundtrip, found 5 days ago
$905
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Sun, Feb 1 from Asuncion to Seattle, returning Wed, Feb 18, priced at $905 found 5 days ago
Copa
Wed, Dec 17 - Mon, Jan 5
ASU
Asuncion
SEA
Seattle
$1,011 Roundtrip, found 4 days ago
$1,011
Roundtrip
found 4 days ago
Select Copa flight, departing Wed, Dec 17 from Asuncion to Seattle, returning Mon, Jan 5, priced at $1,011 found 4 days ago
GOL Linhas Aereas S.A.
Mon, Mar 2 - Sun, Mar 15
ASU
Asuncion
SEA
Seattle
$1,770 Roundtrip, found 3 days ago
$1,770
Roundtrip
found 3 days ago
Select GOL Linhas Aereas S.A. flight, departing Mon, Mar 2 from Asuncion to Seattle, returning Sun, Mar 15, priced at $1,770 found 3 days ago

Frequently asked questions

How much does a flight from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $545 or cheap return flight from $870 from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from ASU to SEA is May, when demand is low. Off-peak months are generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from ASU to SEA, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA)?
Direct flights from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ASU to SEA?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on various factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA)?
Opt for a flight from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until right before your break to book a flight from ASU to SEA often results in higher prices. While you might find some last-minute offers, they're not always guaranteed. Keep your travel plans flexible for a better chance of landing a bargain.
Is it cheaper to book an ASU to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking an ASU to SEA flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place takes the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Silvio Pettirossi Intl. Airport (ASU) to Seattle - Tacoma Intl. Airport (SEA)?
It's usually possible to cancel or reschedule your ASU to SEA flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Silvio Pettirossi Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
LATAM Airlines Group
Roundtrip price
$870
Distance
6430 mi

Book with confidence

Asuncion to Seattle Flights

The cheapest times to fly from Asuncion to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Asuncion to Seattle are during the month of May. You can find some of the cheapest flights from Asuncion to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Asuncion to Seattle

Sunday is one of the best days to book for cheap flights from Asuncion to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Asuncion to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Asuncion to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $545 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Asuncion to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Asuncion to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Asuncion to Seattle Flights

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*Available to One Key members.