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Asuncion

$833+ Cheap flights from Seattle (SEA) to Asuncion (ASU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ASU
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Seattle to Asuncion

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Asuncion (ASU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$840
(United Airlines)

Popular in

November

Cheapest in

September

Average price

$1,063
Provider with most accurate pricing for Seattle/Tacoma Intl-Asuncion Silvio Pettirossi flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Asuncion Silvio Pettirossi flights.
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From Seattle/Tacoma Intl to Asuncion Silvio Pettirossi
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Highest demand for flights based on searches. 9% potential increase in price ($130 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($63 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Seattle to Asuncion

Cheapest flights from Seattle to Asuncion
Explore the most affordable flight options available from Seattle to Asuncion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:28 pmSEA - ASU
2 stops48h 33mUnited Airlines
Fri 10/316:34 amASU - SEA
2 stops29h 49mUnited Airlines
Deal found 10/26$833
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/271:20 pmSEA - ASU
2 stops35h 10mUnited Airlines
Fri 12/56:33 amASU - SEA
2 stops33h 43mUnited Airlines
Deal found 10/27$840
This Copa Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:41 pmSEA - ASU
2 stops31h 20mCopa Airlines
Thu 10/301:45 amASU - SEA
2 stops37h 54mCopa Airlines
Deal found 10/26$1,005
This eDestinos deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amSEA - ASU
2 stops30h 40mLATAM Airlines
Thu 12/43:10 amASU - SEA
2 stops38h 20mLATAM Airlines
Deal found 10/27$1,178
This Expedia deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1311:30 amSEA - ASU
2 stops37h 45mMultiple Airlines
Sat 12/208:25 amASU - SEA
2 stops41h 35mMultiple Airlines
Deal found 10/29$1,505
This Booking.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:10 amSEA - ASU
3 stops45h 05mMultiple Airlines
Thu 12/43:35 amASU - SEA
3 stops47h 41mMultiple Airlines
Deal found 10/27$1,782
This Copa Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:36 pmSEA - ASU
2 stops30h 35mCopa Airlines
Fri 12/191:45 amASU - SEA
2 stops27h 12mCopa Airlines
Deal found 10/29$1,959
This Copa Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:05 pmSEA - ASU
2 stops26h 06mCopa Airlines
Fri 1/21:59 amASU - SEA
2 stops26h 58mCopa Airlines
Deal found 10/27$2,712

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Asuncion that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Seattle to Asuncion that are best for you.

Fly from

Seattle

Fly to

Asuncion

Route

Depart

Return

Price

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Thu 11/27

1:20 pm-5:30 am

2 stops35h 10m

Asuncion Silvio Pettirossi

Fri 12/5

6:33 am-11:16 am

2 stops33h 43m

$840

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Mon 3/9

6:00 am-6:15 am

2 stops20h 15m

Asuncion Silvio Pettirossi

Mon 3/16

11:05 am-1:00 pm

2 stops29h 55m

$870

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Tue 2/3

7:55 am-6:15 am

2 stops41h 20m

Asuncion Silvio Pettirossi

Sat 2/14

8:25 am-1:00 pm

2 stops33h 35m

$903

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Thu 11/27

6:00 am-5:40 pm

2 stops30h 40m

Asuncion Silvio Pettirossi

Thu 12/4

3:10 am-12:30 pm

2 stops38h 20m

$1,178

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Thu 1/29

7:00 am-5:37 am

2 stops17h 37m

Asuncion Silvio Pettirossi

Fri 2/13

6:42 am-11:07 pm

2 stops21h 25m

$1,213

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Tue 2/3

8:10 am-12:15 am

3 stops59h 05m

Asuncion Silvio Pettirossi

Sat 2/14

6:42 am-11:10 am

2 stops33h 28m

$1,247

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Thu 1/29

8:10 am-11:30 am

2 stops46h 20m

Asuncion Silvio Pettirossi

Thu 2/12

3:10 am-2:45 pm

2 stops40h 35m

$1,446

SeattleAsuncion

SEA - ASU

SEAASU

Seattle/Tacoma Intl

Tue 2/3

12:24 pm-5:32 am

2 stops36h 08m

Asuncion Silvio Pettirossi

Fri 2/13

1:59 am-7:33 pm

2 stops22h 34m

$1,518

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Seattle to Asuncion

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Asuncion in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Asuncion flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Asuncion flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Asuncion flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Asuncion flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Asuncion flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Asuncion

Have a flexible travel schedule? Discover the best time to fly to Asuncion from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest time of day to fly from SEA to ASU?

Find hourly flight availability from Seattle to Asuncion. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from Seattle to Asuncion at noon. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Seattle to Asuncion?

Reviews of airlines servicing Asuncion

Get insights into the airlines that provide service to Asuncion. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Asuncion. Reviews last updated October 29, 2025.
Peruse reviews from past customers who have flown with LATAM Airlines from Seattle to Asuncion to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,871 reviews

Entertainment

7.0

Comfort

7.3

Boarding

7.5

Overall

7.5

Crew

8.0

Food

6.7

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
LATAM Airlines
7.5
Good
1,871 reviews
LATAM Airlines
7.5
Good
1,871 reviews

Entertainment

7.0

Comfort

7.3

Boarding

7.5

Overall

7.5

Crew

8.0

Food

6.7

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Asuncion. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Asuncion?

    A quick flight from Seattle to Asuncion can take about 20h 15m. United Airlines provides one of the quickest options available for as low as $870. The distance from Seattle to Asuncion is about 6426 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Asuncion round-trip?

    LATAM Airlines, at $751, was found to be the cheapest airline from Seattle to Asuncion.. LATAM Airlines is priced at 39% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Asuncion that include hotel bookings?

    Yes. In addition to deals on Seattle to Asuncion flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Asuncion?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Asuncion.

  • Can I find deals for business class flights from Seattle to Asuncion?

    Yes. Cheapflights offers flight deals from Seattle to Asuncion by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Seattle to Asuncion

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Asuncion flights
Spokane to Asuncion flights

Top airline flying from Seattle to Asuncion

Discover the top airline that operate flights from Seattle to Asuncion. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$751Average$1,111FlexibilityNo cancel feeOn-time81%

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