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Cheap flights from Washington to Buenos Aires from $359

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Buenos Aires departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
7:20 am - 10:30 am
SEA
-
AEP
23h 10m
2 stops
LATAM Airlines Logo
6:20 pm - 2:35 pm
AEP
-
SEA
24h 15m
2 stops
$967LATAM Airlines
Tue, Mar 10 - Tue, Mar 17
LATAM Airlines Logo
9:40 am - 10:30 am
SEA
-
AEP
20h 50m
2 stops
LATAM Airlines Logo
8:05 pm - 9:48 pm
AEP
-
SEA
29h 43m
2 stops
$997LATAM Airlines
Mon, Mar 23 - Mon, Mar 30
LATAM Airlines Logo
7:20 am - 10:30 am
SEA
-
AEP
23h 10m
2 stops
LATAM Airlines Logo
3:45 pm - 7:48 pm
AEP
-
SEA
32h 03m
2 stops
$1,000LATAM Airlines
Mon, Mar 16 - Tue, Mar 31
LATAM Airlines Logo
7:20 am - 2:40 pm
SEA
-
AEP
27h 20m
2 stops
LATAM Airlines Logo
8:50 am - 12:49 pm
AEP
-
SEA
31h 59m
2 stops
$1,024LATAM Airlines
Mon, Mar 9 - Mon, Mar 16
LATAM Airlines Logo
4:35 pm - 4:00 pm
PDX
-
AEP
19h 25m
2 stops
LATAM Airlines Logo
8:05 pm - 12:06 pm
AEP
-
PDX
20h 01m
2 stops
$1,025LATAM Airlines
Tue, Apr 14 - Wed, Apr 29
LATAM Airlines Logo
4:35 pm - 7:40 pm
PDX
-
AEP
23h 05m
3 stops
LATAM Airlines Logo
3:45 pm - 12:06 pm
AEP
-
PDX
24h 21m
2 stops
$1,031LATAM Airlines
Tue, Apr 14 - Wed, Apr 29
LATAM Airlines Logo
1:10 pm - 4:00 pm
PDX
-
AEP
22h 50m
2 stops
LATAM Airlines Logo
3:45 pm - 10:41 am
AEP
-
PDX
22h 56m
2 stops
$1,047LATAM Airlines
Tue, Apr 7 - Tue, Apr 28
LATAM Airlines Logo
1:30 pm - 7:40 pm
SEA
-
AEP
26h 10m
3 stops
LATAM Airlines Logo
8:05 pm - 12:37 pm
AEP
-
SEA
20h 32m
2 stops
$1,081LATAM Airlines
Tue, Apr 7 - Tue, Apr 21
LATAM Airlines Logo
8:00 am - 10:30 am
SEA
-
AEP
22h 30m
2 stops
LATAM Airlines Logo
3:45 pm - 9:48 pm
AEP
-
SEA
34h 03m
2 stops
$1,085LATAM Airlines
Fri, Mar 20 - Tue, Mar 31
Multiple Airlines Logo
4:50 pm - 5:40 am
PDX
-
AEP
32h 50m
3 stops
Multiple Airlines Logo
7:00 am - 1:50 pm
AEP
-
PDX
34h 50m
3 stops
$1,282Multiple Airlines
Tue, Apr 7 - Tue, Apr 28

LATAM Airlines flights from State of Washington to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on State of Washington to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
Mar 10
SEA7:20 amSeattle/Tacoma Intl
23h 10m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 17
AEP6:20 pmBuenos Aires Jorge Newbery
24h 15m
2 stops
SEA2:35 pmSeattle/Tacoma Intl
$967
LATAM Airlines
Mar 23
SEA9:40 amSeattle/Tacoma Intl
20h 50m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 30
AEP8:05 pmBuenos Aires Jorge Newbery
29h 43m
2 stops
SEA9:48 pmSeattle/Tacoma Intl
$997
LATAM Airlines
Mar 16
SEA7:20 amSeattle/Tacoma Intl
23h 10m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 31
AEP3:45 pmBuenos Aires Jorge Newbery
32h 03m
2 stops
SEA7:48 pmSeattle/Tacoma Intl
$1,000

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Buenos Aires Jorge Newbery Airport 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, momondo users made 832,500 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Washington to Buenos Aires Jorge Newbery Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 3/10

7:20 am-10:30 am

2 stops23h 10m

Buenos Aires Jorge Newbery

Tue 3/17

6:20 pm-2:35 pm

2 stops24h 15m

$967

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/23

9:40 am-10:30 am

2 stops20h 50m

Buenos Aires Jorge Newbery

Mon 3/30

8:05 pm-9:48 pm

2 stops29h 43m

$997

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/16

7:20 am-10:30 am

2 stops23h 10m

Buenos Aires Jorge Newbery

Tue 3/31

3:45 pm-7:48 pm

2 stops32h 03m

$1,000

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/9

7:20 am-2:40 pm

2 stops27h 20m

Buenos Aires Jorge Newbery

Mon 3/16

8:50 am-12:49 pm

2 stops31h 59m

$1,024

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/14

4:35 pm-4:00 pm

2 stops19h 25m

Buenos Aires Jorge Newbery

Wed 4/29

8:05 pm-12:06 pm

2 stops20h 01m

$1,025

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/14

4:35 pm-7:40 pm

3 stops23h 05m

Buenos Aires Jorge Newbery

Wed 4/29

3:45 pm-12:06 pm

2 stops24h 21m

$1,031

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/7

1:10 pm-4:00 pm

2 stops22h 50m

Buenos Aires Jorge Newbery

Tue 4/28

3:45 pm-10:41 am

2 stops22h 56m

$1,047

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 4/7

1:30 pm-7:40 pm

3 stops26h 10m

Buenos Aires Jorge Newbery

Tue 4/21

8:05 pm-12:37 pm

2 stops20h 32m

$1,081

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 3/20

8:00 am-10:30 am

2 stops22h 30m

Buenos Aires Jorge Newbery

Tue 3/31

3:45 pm-9:48 pm

2 stops34h 03m

$1,085

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/7

4:50 pm-5:40 am

3 stops32h 50m

Buenos Aires Jorge Newbery

Tue 4/28

7:00 am-1:50 pm

3 stops34h 50m

$1,282

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from State of Washington to Buenos Aires Jorge Newbery Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to Buenos Aires Jorge Newbery Airport?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Buenos Aires Jorge Newbery Airport you fly into. For example, flying from Seattle to Buenos Aires Ministro Pistarini Airport takes 15h 35m on average. On the other hand, flying from Spokane to Buenos Aires Ministro Pistarini Airport takes 25h 20m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Cheap State of Washington to Buenos Aires Jorge Newbery Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Buenos Aires Jorge Newbery Airport

Fastest flight time

19h 25m

Direct flights

None
The fastest flight from State of Washington to Buenos Aires Jorge Newbery Airport takes 19h 25m
There are no direct flights from State of Washington to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from State of Washington to Buenos Aires Jorge Newbery Airport.
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  • When did momondo last update prices for flights from Washington to Buenos Aires Jorge Newbery Airport?

    Prices for flights from Washington to Buenos Aires Jorge Newbery Airport were last updated today.

  • How old do you have to be to fly from Washington to Buenos Aires Jorge Newbery Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Buenos Aires Jorge Newbery Airport.

  • What documentation or ID do you need to fly to Buenos Aires Jorge Newbery Airport?

    The necessary travel and health documents for your Buenos Aires Jorge Newbery Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Buenos Aires?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Buenos Aires for you.

Can I find flights from Washington to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from Washington with this policy.

How can momondo help me find flights from Washington to Buenos Aires?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Buenos Aires.

I’m not ready to book a flight from Washington to Buenos Aires right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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Popular flights according to clicks in the last 7 days on momondo
Flights to Buenos Aires Ministro Pistarini Airportfrom $478