$639 Cheap Flights from Buenos Aires (AEP) to Seattle (SEA)

View $639 flight on Tue, Nov 25, 2025Opens in a new window

Popular airlines from Buenos Aires (AEP-Aeroparque Jorge Newbery) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Buenos Aires to Seattle (AEP-SEA)

Prices were available within the past 7 days and start at $639 for one-way flights and $1,048 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Thu, Nov 13 - Mon, Nov 17
AEP
Buenos Aires
SEA
Seattle
$1,048 Roundtrip, found 2 days ago
$1,048
Roundtrip
found 2 days ago
Select LATAM Airlines Group flight, departing Thu, Nov 13 from Buenos Aires to Seattle, returning Mon, Nov 17, priced at $1,048 found 2 days ago
LATAM Airlines Group
Fri, Nov 14 - Tue, Nov 18
AEP
Buenos Aires
SEA
Seattle
$1,101 Roundtrip, found 2 days ago
$1,101
Roundtrip
found 2 days ago
Select LATAM Airlines Group flight, departing Fri, Nov 14 from Buenos Aires to Seattle, returning Tue, Nov 18, priced at $1,101 found 2 days ago
LATAM Airlines Group
Sun, Aug 16 - Wed, Sep 2
AEP
Buenos Aires
SEA
Seattle
$1,188 Roundtrip, found 4 days ago
$1,188
Roundtrip
found 4 days ago
Select LATAM Airlines Group flight, departing Sun, Aug 16 from Buenos Aires to Seattle, returning Wed, Sep 2, priced at $1,188 found 4 days ago
LATAM Airlines Group
Sat, Feb 28 - Sat, Mar 14
AEP
Buenos Aires
SEA
Seattle
$1,192 Roundtrip, found 3 days ago
$1,192
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Sat, Feb 28 from Buenos Aires to Seattle, returning Sat, Mar 14, priced at $1,192 found 3 days ago
LATAM Airlines Group
Sun, Aug 16 - Wed, Sep 2
AEP
Buenos Aires
SEA
Seattle
$1,193 Roundtrip, found 4 days ago
$1,193
Roundtrip
found 4 days ago
Select LATAM Airlines Group flight, departing Sun, Aug 16 from Buenos Aires to Seattle, returning Wed, Sep 2, priced at $1,193 found 4 days ago
LATAM Airlines Group
Mon, Mar 9 - Mon, Mar 16
AEP
Buenos Aires
SEA
Seattle
$1,210 Roundtrip, found 23 hours ago
$1,210
Roundtrip
found 23 hours ago
Select LATAM Airlines Group flight, departing Mon, Mar 9 from Buenos Aires to Seattle, returning Mon, Mar 16, priced at $1,210 found 23 hours ago
LATAM Airlines Group
Tue, Nov 25 - Wed, Jan 14
AEP
Buenos Aires
SEA
Seattle
$1,216 Roundtrip, found 1 day ago
$1,216
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Tue, Nov 25 from Buenos Aires to Seattle, returning Wed, Jan 14, priced at $1,216 found 1 day ago
LATAM Airlines Group
Tue, Nov 25 - Wed, Jan 14
AEP
Buenos Aires
SEA
Seattle
$1,224 Roundtrip, found 1 day ago
$1,224
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Tue, Nov 25 from Buenos Aires to Seattle, returning Wed, Jan 14, priced at $1,224 found 1 day ago
LATAM Airlines Group
Wed, Dec 3 - Sun, Mar 22
AEP
Buenos Aires
SEA
Seattle
$1,225 Roundtrip, found 2 days ago
$1,225
Roundtrip
found 2 days ago
Select LATAM Airlines Group flight, departing Wed, Dec 3 from Buenos Aires to Seattle, returning Sun, Mar 22, priced at $1,225 found 2 days ago
LATAM Airlines Group
Tue, Mar 3 - Mon, Mar 16
AEP
Buenos Aires
SEA
Seattle
$1,232 Roundtrip, found 22 hours ago
$1,232
Roundtrip
found 22 hours ago
Select LATAM Airlines Group flight, departing Tue, Mar 3 from Buenos Aires to Seattle, returning Mon, Mar 16, priced at $1,232 found 22 hours ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,101
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,101

Frequently asked questions

How much does a flight from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $639 or cheap return flight from $1,048 from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from AEP to SEA is November, when there's less demand. Off-peak months are generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest AEP to SEA flight.
How many flights per day from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to take a flight with a layover when traveling from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from AEP to SEA?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA)?
To touch down at Seattle - Tacoma Intl. Airport (SEA) on time, opt for a flight that leaves from Aeroparque Jorge Newbery Airport (AEP) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your plane ticket from AEP to SEA right before your getaway is usually more expensive. However, if there's some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an AEP to SEA flight and hotel package?
You'll generally save money by booking an AEP to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've chosen your preferred accommodations and flights, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Aeroparque Jorge Newbery Airport (AEP) to Seattle - Tacoma Intl. Airport (SEA)?
In most cases, you can modify or cancel your AEP to SEA flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like further information, visit our Customer Service portal.

Travel information

Origin airport
Aeroparque Jorge Newbery
Destination airport
Seattle - Tacoma Intl.
Airlines serving
LATAM Airlines Group
Roundtrip price
$1,047
Distance
6904 mi

Book with confidence

Buenos Aires to Seattle Flights

The cheapest times to fly from Buenos Aires 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 Buenos Aires to Seattle are during the month of November. You can find some of the cheapest flights from Buenos Aires to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buenos Aires to Seattle

Sunday is one of the best days to book for cheap flights from Buenos Aires 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 Buenos Aires 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 Buenos Aires to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $639 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 Buenos Aires 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 Buenos Aires 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.

 

Buenos Aires to Seattle Flights

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