SEA - ASU

$475 Find Cheap Flights from Seattle to Asuncion - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Asuncion departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,209
Multiple Airlines
Tue 12/29Sat 1/23
SEA - ASU • 2 stops
Cheapest one-way
$475
Multiple Airlines
Wed 9/16
SEA - ASU • 2 stops
Top airlines
LATAM Airlines
Cheapest • from $1,239 (round-trip)
LATAM Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Asuncion. You'll need at least 2 connections.
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Asuncion (SEA-ASU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Asuncion that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Asuncion

Tue, Dec 29 - Sat, Jan 23
Multiple Airlines Logo
9:26 pm - 5:15 am
SEA
-
ASU
26h 49m
2 stops
Multiple Airlines Logo
8:20 am - 10:18 pm
ASU
-
SEA
42h 58m
2 stops
$1,209Multiple Airlines
Thu, Oct 15 - Tue, Oct 27
Multiple Airlines Logo
11:18 pm - 4:40 am
SEA
-
ASU
49h 22m
2 stops
Multiple Airlines Logo
8:20 am - 10:35 am
ASU
-
SEA
30h 15m
2 stops
$1,210Multiple Airlines
Wed, Oct 28 - Sun, Nov 1
LATAM Airlines Logo
7:32 am - 10:35 am
SEA
-
ASU
23h 03m
2 stops
LATAM Airlines Logo
11:30 am - 2:52 pm
ASU
-
SEA
32h 22m
2 stops
$1,239LATAM Airlines
Wed, Oct 28 - Sun, Nov 1
LATAM Airlines Logo
7:15 am - 10:35 am
SEA
-
ASU
23h 20m
2 stops
LATAM Airlines Logo
5:10 am - 11:00 pm
ASU
-
SEA
21h 50m
2 stops
$1,239LATAM Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
6:49 am - 6:05 am
SEA
-
ASU
19h 16m
2 stops
Multiple Airlines Logo
8:10 am - 9:25 am
ASU
-
SEA
29h 15m
2 stops
$1,240Multiple Airlines
Wed, Oct 14 - Tue, Oct 27
Multiple Airlines Logo
11:18 pm - 4:40 am
SEA
-
ASU
25h 22m
2 stops
Multiple Airlines Logo
8:20 am - 8:56 pm
ASU
-
SEA
40h 36m
2 stops
$1,244Multiple Airlines
Thu, Oct 15 - Mon, Oct 26
Multiple Airlines Logo
5:05 pm - 12:03 am
SEA
-
ASU
26h 58m
2 stops
Multiple Airlines Logo
1:20 pm - 1:25 pm
ASU
-
SEA
28h 05m
2 stops
$1,263Multiple Airlines
Thu, Oct 15 - Wed, Oct 28
Multiple Airlines Logo
5:05 pm - 12:03 am
SEA
-
ASU
26h 58m
2 stops
Multiple Airlines Logo
1:20 pm - 2:39 pm
ASU
-
SEA
29h 19m
2 stops
$1,263Multiple Airlines
Fri, Oct 16 - Wed, Oct 28
Multiple Airlines Logo
11:18 pm - 4:40 am
SEA
-
ASU
25h 22m
2 stops
Multiple Airlines Logo
7:55 am - 8:37 am
ASU
-
SEA
28h 42m
2 stops
$1,279Multiple Airlines
Fri, Oct 16 - Mon, Oct 26
Multiple Airlines Logo
11:18 pm - 4:40 am
SEA
-
ASU
25h 22m
2 stops
Multiple Airlines Logo
7:55 am - 11:44 am
ASU
-
SEA
31h 49m
2 stops
$1,279Multiple Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Asuncion flights

Get data-powered insights and trends into flights from Seattle to Asuncion to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Seattle to Asuncion?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Seattle to Asuncion were found on LATAM Airlines ($1,239) and United Airlines ($1,284).

Find deals

Good to know

Cheapest flight

$475
Flight from Seattle to Asuncion

When to book flights from Seattle to Asuncion

Are your dates flexible? Find out the best times to travel from Seattle to Asuncion based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Asuncion

  • What is the cheapest flight from Seattle to Asuncion?

    In the last 5 days, the lowest price for a flight from Seattle to Asuncion was $475 for a one-way ticket and $1,209 for a round-trip.

  • Do I need a passport to fly between Seattle and Asuncion?

    A passport is required to fly from Seattle to Asuncion.

  • Which airports will I be using when flying from Seattle to Asuncion?

    Seattle airport is called Seattle/Tacoma Intl and the only airport in Asuncion is Asuncion Silvio Pettirossi.

  • Which aircraft models fly most regularly from Seattle to Asuncion?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Seattle to Asuncion?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Asuncion.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Asuncion?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Asuncion from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Asuncion?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Asuncion with an airline and back to Seattle with another airline. Booking your flights between Seattle and ASU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Asuncion?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Asuncion from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seattle to Asuncion

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Asuncion. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Asuncion? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
LATAM AirlinesOverall score based on 1968 reviews
6.7Food
7.3Comfort
8.0Crew
7.5Boarding
7.0Entertainment
Airline reviews

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

10.0 ExcellentYelen, Mar 2026
ATL - TPA
Read more LATAM Airlines reviews

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Apart of Sky miles delta. And they go everywhere in Brazil

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Please guy check the food I almost end up to the hospital

Everything you need to know for your flight from Seattle to Asuncion

Information on your arrival and departure airports

Seattle (SEA)
Asuncion (ASU)