What are the cheapest airlines flying from Seattle to Buenos Aires round-trip?

Cheapflights users have booked flights from Seattle to Buenos Aires round-trip from $1,195. Other airlines that can offer you cheap pricing are LATAM Airlines, from $1,200, and Air Canada, from $1,204. You may be able to fly from Seattle to Buenos Aires for 14% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Seattle to Buenos Aires one-way?

The cheapest airlines for a one-way flight from Seattle to Buenos Aires are Avianca ($637), Air Canada ($691), and Copa Airlines ($710).

What is the cheapest day to fly from Seattle to Buenos Aires?

Travelers seeking maximum savings on their Seattle to Buenos Aires flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Seattle to Buenos Aires?

Before booking your flight from Seattle to Buenos Aires check out the most popular airlines for this route: American Airlines, Delta or United Airlines.

What is the cheapest day to fly round-trip from Seattle to Buenos Aires?

Travelers have found that booking a Monday departure is the best way to save up to 13% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest month to fly from Seattle to Buenos Aires?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, October can be a great choice for travel to Buenos Aires. Flights to Buenos Aires from Seattle in October are about $1,396 on average during October, but can be found for as low as $657.

Most accurate provider : When it comes to deals on Seattle-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Buenos Aires flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Seattle-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub 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-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Seattle to Buenos Aires?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Buenos Aires. On average, Seattle/Tacoma Intl has 0 outbound flights to Buenos Aires per day from 4 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Can I find deals for flights from Seattle to Buenos Aires that include hotel bookings?

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

How can I find direct flights from Seattle to Buenos Aires?

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

Can I find deals for business class flights from Seattle to Buenos Aires?

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

$417+ Flights from Seattle to Buenos Aires

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Buenos Aires are usually found in October or November, booked 3 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to Buenos Aires

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$1,195 (United Airlines)
One-way from	$417 (Kiwi.com)
Popular in	December
Cheapest in	October
Average price	$1,380

Provider with most accurate pricing for Seattle/Tacoma Intl-Buenos Aires (BUE) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Buenos Aires (BUE) flights.

Search Deals

From Seattle/Tacoma Intl to Buenos Aires (BUE)

Search Deals

One-way flight from Seattle/Tacoma Intl to Buenos Aires (BUE)

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($63 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Find flight deals from Seattle to Buenos Aires

Cheapest flights from Seattle to Buenos Aires
Explore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Thu 12/118:40 amSEA - EZE

2 stops28h 20mLATAM Airlines

Wed 12/177:00 pmEZE - SEA

2 stops31h 51mLATAM Airlines

Deal found 3/23

$1,194

Mon 5/1211:59 pmSEA - EZE

1 stop28h 01mUnited Airlines

Mon 5/199:00 pmEZE - SEA

2 stops28h 57mUnited Airlines

Deal found 3/23

$1,195

Thu 10/231:45 pmSEA - EZE

1 stop16h 00mDelta

Sun 11/2310:25 pmEZE - SEA

1 stop20h 57mDelta

Deal found 3/25

$1,200

Mon 12/2911:40 amSEA - AEP

2 stops25h 20mLATAM Airlines

Sat 1/177:10 pmAEP - SEA

2 stops24h 06mLATAM Airlines

Deal found 3/25

$1,200

Mon 5/127:15 pmSEA - EZE

3 stops39h 15mAir Canada

Mon 5/194:35 pmEZE - SEA

3 stops31h 02mAir Canada

Deal found 3/23

$1,204

Wed 5/78:15 amSEA - EZE

1 stop31h 15mMultiple Airlines

Wed 5/142:32 pmEZE - SEA

2 stops34h 10mMultiple Airlines

Deal found 3/23

$1,222

Fri 5/911:40 amSEA - AEP

3 stops34h 00mMultiple Airlines

Fri 5/164:15 amAEP - SEA

3 stops34h 36mMultiple Airlines

Deal found 3/25

$1,229

Tue 11/41:33 amSEA - EZE

1 stop26h 37mAmerican Airlines

Sat 11/159:40 pmEZE - SEA

2 stops19h 50mAmerican Airlines

Deal found 3/25

$1,269

Sat 6/149:21 amSEA - EZE

1 stop32h 04mAeromexico

Wed 6/1811:25 pmEZE - SEA

1 stop24h 26mAeromexico

Deal found 3/23

$1,293

Mon 5/125:40 pmSEA - EZE

2 stops27h 07mCopa Airlines

Sun 5/183:47 amEZE - SEA

2 stops22h 10mCopa Airlines

Deal found 3/23

$1,295

Best flights from Seattle to Buenos Aires
Discover carefully curated flight deals from Seattle to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 26, 2025.

Mon 5/1211:59 pmSEA - EZE

1 stop28h 01mUnited Airlines

Mon 5/199:00 pmEZE - SEA

2 stops28h 57mUnited Airlines

Deal found 3/23

$1,195

Mon 8/118:00 amSEA - EZE

2 stops23h 57mLATAM Airlines

Fri 8/157:13 pmEZE - SEA

2 stops21h 40mLATAM Airlines

Deal found 3/25

$1,200

Mon 5/127:15 pmSEA - EZE

3 stops39h 15mAir Canada

Mon 5/194:35 pmEZE - SEA

3 stops31h 02mAir Canada

Deal found 3/23

$1,204

Tue 4/224:00 pmSEA - EZE

2 stops28h 10mMultiple Airlines

Tue 4/294:45 pmEZE - SEA

2 stops23h 55mMultiple Airlines

Deal found 3/23

$1,205

Mon 8/1111:35 pmSEA - EZE

1 stop30h 10mDelta

Fri 8/158:10 pmEZE - SEA

1 stop22h 35mDelta

Deal found 3/25

$1,206

Tue 5/612:24 amSEA - EZE

1 stop26h 51mAmerican Airlines

Wed 5/1410:30 pmEZE - SEA

1 stop28h 37mAmerican Airlines

Deal found 3/24

$1,292

Sat 6/149:21 amSEA - EZE

1 stop32h 04mAeromexico

Wed 6/1811:25 pmEZE - SEA

1 stop24h 26mAeromexico

Deal found 3/23

$1,293

Mon 5/125:40 pmSEA - EZE

2 stops27h 07mCopa Airlines

Sun 5/183:47 amEZE - SEA

2 stops22h 10mCopa Airlines

Deal found 3/23

$1,295

Fri 5/911:40 amSEA - AEP

3 stops34h 00mMultiple Airlines

Fri 5/164:15 amAEP - SEA

3 stops34h 36mMultiple Airlines

Deal found 3/25

$1,229

Sat 7/511:40 pmSEA - AEP

2 stops24h 25mLATAM Airlines

Wed 8/68:10 pmAEP - SEA

2 stops22h 29mLATAM Airlines

Deal found 3/25

$1,250

Last-minute flights from Seattle to Buenos Aires
Discover last-minute flight deals from Seattle to Buenos Aires. Data last updated March 26, 2025 and is based on user searches.

Mon 3/3110:15 pmSEA - EZE

3 stops27h 30mMultiple Airlines

Sat 4/51:40 amEZE - SEA

3 stops35h 03mMultiple Airlines

Deal found 3/25

$1,427

Mon 3/317:15 amSEA - EZE

2 stops24h 33mLATAM Airlines

Sat 4/53:55 amEZE - SEA

2 stops34h 37mLATAM Airlines

Deal found 3/25

$1,668

Mon 3/318:45 amSEA - EZE

1 stop21h 00mDelta

Sun 4/68:10 pmEZE - SEA

1 stop18h 22mDelta

Deal found 3/25

$1,945

Tue 4/17:35 amSEA - AEP

2 stops27h 05mLATAM Airlines

Sun 4/610:55 pmAEP - SEA

2 stops28h 58mLATAM Airlines

Deal found 3/25

$1,627

Fri 4/46:00 amSEA - EZE

2 stops28h 30mAir Canada

Sat 5/244:35 pmEZE - SEA

2 stops31h 02mAir Canada

Deal found 3/24

$1,277

Fri 4/46:00 amSEA - AEP

2 stops28h 30mMultiple Airlines

Sat 5/243:15 pmAEP - SEA

2 stops32h 22mMultiple Airlines

Deal found 3/24

$1,477

Fri 4/45:15 amSEA - EZE

2 stops22h 45mUnited Airlines

Sat 5/249:00 pmEZE - SEA

1 stop26h 14mUnited Airlines

Deal found 3/24

$1,485

Fri 4/117:05 pmSEA - EZE

3 stops63h 25mAir Canada

Sat 5/174:35 pmEZE - SEA

3 stops44h 43mAir Canada

Deal found 3/25

$1,210

Fri 4/116:42 amSEA - EZE

2 stops20h 38mAmerican Airlines

Fri 4/188:25 pmEZE - SEA

1 stop31h 14mAmerican Airlines

Deal found 3/24

$1,659

Tue 4/159:31 amSEA - EZE

1 stop31h 54mAeromexico

Tue 5/1311:25 pmEZE - SEA

1 stop24h 35mAeromexico

Deal found 3/25

$4,688

Tue 4/224:00 pmSEA - EZE

2 stops28h 10mMultiple Airlines

Tue 4/294:45 pmEZE - SEA

2 stops23h 55mMultiple Airlines

Deal found 3/23

$1,205

Tue 4/2211:55 amSEA - EZE

2 stops19h 53mLATAM Airlines

Tue 4/2912:48 pmEZE - SEA

2 stops34h 46mLATAM Airlines

Deal found 3/25

$1,283

One-way flights from Seattle to Buenos Aires
Search for one-way flight options from Seattle to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated March 26, 2025.

Sat 5/104:20 pmSEA - AEP

3 stops37h 00mMultiple Airlines

Deal found 3/25

$417

Fri 6/1311:59 pmSEA - EZE

3 stops23h 26mMultiple Airlines

Deal found 3/24

$579

Sun 3/3012:46 pmSEA - EZE

2 stops31h 24mAvianca

Deal found 3/25

$637

Fri 6/137:20 amSEA - EZE

2 stops27h 10mAir Canada

Deal found 3/24

$691

Thu 6/265:14 pmSEA - EZE

2 stops27h 48mCopa Airlines

Deal found 3/24

$710

Mon 6/237:20 amSEA - AEP

2 stops27h 20mLATAM Airlines

Deal found 3/25

$751

Fri 6/2712:20 amSEA - EZE

2 stops27h 40mUnited Airlines

Deal found 3/24

$786

Fri 6/137:40 amSEA - EZE

1 stop22h 05mDelta

Deal found 3/24

$788

Tue 5/1312:24 amSEA - EZE

1 stop28h 31mAmerican Airlines

Deal found 3/25

$1,317

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 5/12

11:59 pm-8:00 am

1 stop28h 01m

Buenos Aires Ministro Pistarini

Mon 5/19

9:00 pm-9:57 pm

2 stops28h 57m

$1,195

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 8/11

10:17 am-11:57 am

2 stops21h 40m

Buenos Aires Ministro Pistarini

Thu 8/14

3:55 am-12:08 am

2 stops24h 13m

$1,200

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 5/12

7:15 pm-2:30 pm

3 stops39h 15m

Buenos Aires Ministro Pistarini

Mon 5/19

4:35 pm-7:37 pm

3 stops31h 02m

$1,204

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 4/22

4:00 pm-12:10 am

2 stops28h 10m

Buenos Aires Ministro Pistarini

Tue 4/29

4:45 pm-12:40 pm

2 stops23h 55m

$1,205

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 8/11

11:35 pm-9:45 am

1 stop30h 10m

Buenos Aires Ministro Pistarini

Fri 8/15

8:10 pm-2:45 pm

1 stop22h 35m

$1,206

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 5/9

11:40 am-1:40 am

3 stops34h 00m

Buenos Aires Jorge Newbery

Fri 5/16

4:15 am-10:51 am

3 stops34h 36m

$1,229

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 7/5

11:40 pm-4:05 am

2 stops24h 25m

Buenos Aires Jorge Newbery

Wed 8/6

8:10 pm-2:39 pm

2 stops22h 29m

$1,250

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 5/6

12:24 am-7:15 am

1 stop26h 51m

Buenos Aires Ministro Pistarini

Wed 5/14

10:30 pm-11:07 pm

1 stop28h 37m

$1,292

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 6/14

9:21 am-9:25 pm

1 stop32h 04m

Buenos Aires Ministro Pistarini

Wed 6/18

11:25 pm-7:51 pm

1 stop24h 26m

$1,293

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 5/12

5:40 pm-12:47 am

2 stops27h 07m

Buenos Aires Ministro Pistarini

Sun 5/18

3:47 am-9:57 pm

2 stops22h 10m

$1,295

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 19 results

Compare providers for flights from Seattle to Buenos Aires

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Buenos Aires in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust 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-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Buenos Aires flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Seattle-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub 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-Buenos Aires 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 Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires 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 Buenos Aires

How far ahead should I book a flight from Seattle to Buenos Aires?

Booking 3 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Buenos Aires?

Currently, April is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of $795). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of $1,260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

It’s optimal to fly from Seattle to Buenos Aires in the afternoon. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight at noon.

Rainfall in Buenos Aires by month

In terms of precipitation, rainfall in Buenos Aires ranges from 2.0 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. June is typically the driest time to visit Buenos Aires when rainfall is around 2.0 in.

Temperature in Buenos Aires by month

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Buenos Aires

To help decide which airline to fly from Seattle to Buenos Aires, see what other customers have to say about Delta, Copa Airlines and LATAM Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,891 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Copa Airlines

7.6

Good

1,393 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

LATAM Airlines

7.5

Good

1,749 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aeromexico

7.5

Good

1,701 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,608 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from Seattle to Buenos Aires?
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Buenos Aires. On average, Seattle/Tacoma Intl has 0 outbound flights to Buenos Aires per day from 4 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
What are the cheapest airlines flying from Seattle to Buenos Aires round-trip?
Cheapflights users have booked flights from Seattle to Buenos Aires round-trip from $1,195. Other airlines that can offer you cheap pricing are LATAM Airlines, from $1,200, and Air Canada, from $1,204. You may be able to fly from Seattle to Buenos Aires for 14% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Seattle to Buenos Aires one-way?
The cheapest airlines for a one-way flight from Seattle to Buenos Aires are Avianca ($637), Air Canada ($691), and Copa Airlines ($710).
Can I find deals for flights from Seattle to Buenos Aires that include hotel bookings?
Yes. In addition to deals on Seattle to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Buenos Aires?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Buenos Aires.
Can I find deals for business class flights from Seattle to Buenos Aires?
Yes. Cheapflights offers flight deals from Seattle to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seattle to Buenos Aires?
Currently, April is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of $795). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of $1,260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Seattle to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$1,100	Average$1,368	FlexibilityNo cancel fee	On-time71%
LATAM Airlines	Cheapest$1,113	Average$1,268	FlexibilityNo cancel fee	On-time81%
Delta	Cheapest$1,133	Average$1,429	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$1,200	Average$1,375	FlexibilityNo cancel fee	On-time69%

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$417+ Cheap flights from Seattle (SEA) to Buenos Aires (BUE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Buenos Aires with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Buenos Aires are usually found in October or November, booked 3 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to Buenos Aires

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Buenos Aires

Cheapest flights from Seattle to Buenos AiresExplore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Explore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Buenos Aires that are best for you.

Compare providers for flights from Seattle to Buenos Aires

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 Buenos Aires in March.

Best time to book a flight from Seattle to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Buenos Aires

How far ahead should I book a flight from Seattle to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Buenos Aires. Price data was last updated on March 21, 2025.

What is the cheapest month to book a flight from Seattle to Buenos Aires?

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

Find hourly flight availability from Seattle to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2025.

Rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average rainfall totals by month.

Temperature in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature totals by month.

Reviews of airlines servicing Buenos Aires

Related info for your journey

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

What airport do you fly from for flights from Seattle to Buenos Aires?

What are the cheapest airlines flying from Seattle to Buenos Aires round-trip?

What are the cheapest airlines to fly from Seattle to Buenos Aires one-way?

Can I find deals for flights from Seattle to Buenos Aires that include hotel bookings?

How can I find direct flights from Seattle to Buenos Aires?

Can I find deals for business class flights from Seattle to Buenos Aires?

What is the cheapest month to book a flight from Seattle to Buenos Aires?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Seattle to Buenos Aires

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Cheapest flights from Seattle to Buenos Aires
Explore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.