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Cheap flights from Washington to Buenos Aires from $471

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 8/20. 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
8:25 am - 2:50 pm
SEA
-
AEP
26h 25m
2 stops
LATAM Airlines Logo
3:45 pm - 2:51 pm
AEP
-
SEA
27h 06m
2 stops
$1,009LATAM Airlines
Tue, Jun 23 - Mon, Jul 6
LATAM Airlines Logo
11:40 am - 4:00 pm
PDX
-
AEP
24h 20m
2 stops
LATAM Airlines Logo
5:05 pm - 1:25 pm
AEP
-
PDX
24h 20m
2 stops
$1,009LATAM Airlines
Wed, Oct 14 - Mon, Oct 26
LATAM Airlines Logo
6:00 am - 7:40 am
SEA
-
AEP
21h 40m
2 stops
LATAM Airlines Logo
7:20 pm - 2:50 pm
AEP
-
SEA
23h 30m
2 stops
$1,016LATAM Airlines
Mon, Jun 8 - Mon, Jun 22
LATAM Airlines Logo
8:25 am - 2:50 pm
SEA
-
AEP
26h 25m
2 stops
LATAM Airlines Logo
9:00 pm - 9:44 pm
AEP
-
SEA
28h 44m
2 stops
$1,017LATAM Airlines
Tue, Jun 23 - Sun, Jul 5
LATAM Airlines Logo
7:15 am - 6:25 pm
SEA
-
AEP
31h 10m
2 stops
LATAM Airlines Logo
8:05 pm - 10:01 pm
AEP
-
SEA
29h 56m
2 stops
$1,047LATAM Airlines
Wed, Jun 24 - Mon, Jul 6
LATAM Airlines Logo
8:25 am - 2:50 pm
SEA
-
AEP
26h 25m
2 stops
LATAM Airlines Logo
9:00 pm - 9:44 pm
AEP
-
SEA
28h 44m
2 stops
$1,059LATAM Airlines
Wed, Jun 24 - Sun, Jul 5
LATAM Airlines Logo
9:45 pm - 7:40 am
PDX
-
AEP
29h 55m
2 stops
LATAM Airlines Logo
8:05 pm - 12:18 pm
AEP
-
PDX
21h 13m
2 stops
$1,061LATAM Airlines
Sat, Oct 31 - Tue, Nov 10
Delta Logo
7:25 am - 7:40 am
SEA
-
AEP
20h 15m
2 stops
Delta Logo
8:05 pm - 4:47 pm
AEP
-
SEA
24h 42m
2 stops
$1,067Delta
Thu, Jun 4 - Wed, Jun 17
LATAM Airlines Logo
1:45 pm - 4:00 pm
SEA
-
AEP
22h 15m
2 stops
LATAM Airlines Logo
5:05 pm - 9:58 pm
AEP
-
SEA
33h 53m
2 stops
$1,069LATAM Airlines
Sat, Oct 31 - Sun, Nov 8
Multiple Airlines Logo
3:59 pm - 4:00 pm
SEA
-
AEP
20h 01m
2 stops
Multiple Airlines Logo
3:45 pm - 10:01 pm
AEP
-
SEA
34h 16m
2 stops
$1,093Multiple Airlines
Tue, Jul 14 - Wed, Jul 22

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
Jun 23
SEA8:25 amSeattle/Tacoma Intl
26h 25m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
Jul 6
AEP3:45 pmBuenos Aires Jorge Newbery
27h 06m
2 stops
SEA2:51 pmSeattle/Tacoma Intl
$1,009
LATAM Airlines
Jun 8
SEA6:00 amSeattle/Tacoma Intl
21h 40m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Jun 22
AEP7:20 pmBuenos Aires Jorge Newbery
23h 30m
2 stops
SEA2:50 pmSeattle/Tacoma Intl
$1,016
LATAM Airlines
Jun 23
SEA8:25 amSeattle/Tacoma Intl
26h 25m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
Jul 5
AEP9:00 pmBuenos Aires Jorge Newbery
28h 44m
2 stops
SEA9:44 pmSeattle/Tacoma Intl
$1,017

Delta flights from State of Washington to Buenos Aires Jorge Newbery Airport

Our best Delta deals on State of Washington to Buenos Aires Jorge Newbery Airport flight tickets
Delta
Jun 4
SEA7:25 amSeattle/Tacoma Intl
20h 15m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Jun 17
AEP8:05 pmBuenos Aires Jorge Newbery
24h 42m
2 stops
SEA4:47 pmSeattle/Tacoma Intl
$1,067
Delta
Jun 21
SEA8:25 amSeattle/Tacoma Intl
27h 35m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Jul 1
AEP8:40 amBuenos Aires Jorge Newbery
31h 49m
2 stops
SEA12:29 pmSeattle/Tacoma Intl
$1,377
Delta
Oct 24
SEA6:00 amSeattle/Tacoma Intl
21h 40m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Nov 9
AEP5:05 pmBuenos Aires Jorge Newbery
26h 45m
2 stops
SEA2:50 pmSeattle/Tacoma Intl
$1,397

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 May 11, 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

Cheapest round-trip

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 6/23

8:25 am-2:50 pm

2 stops26h 25m

Buenos Aires Jorge Newbery

Mon 7/6

3:45 pm-2:51 pm

2 stops27h 06m

$1,009

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 10/14

11:40 am-4:00 pm

2 stops24h 20m

Buenos Aires Jorge Newbery

Mon 10/26

5:05 pm-1:25 pm

2 stops24h 20m

$1,009

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 6/8

6:00 am-7:40 am

2 stops21h 40m

Buenos Aires Jorge Newbery

Mon 6/22

7:20 pm-2:50 pm

2 stops23h 30m

$1,016

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 6/23

8:25 am-2:50 pm

2 stops26h 25m

Buenos Aires Jorge Newbery

Sun 7/5

9:00 pm-9:44 pm

2 stops28h 44m

$1,017

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 6/24

7:15 am-6:25 pm

2 stops31h 10m

Buenos Aires Jorge Newbery

Mon 7/6

8:05 pm-10:01 pm

2 stops29h 56m

$1,047

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 6/24

8:25 am-2:50 pm

2 stops26h 25m

Buenos Aires Jorge Newbery

Sun 7/5

9:00 pm-9:44 pm

2 stops28h 44m

$1,059

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Sat 10/31

9:45 pm-7:40 am

2 stops29h 55m

Buenos Aires Jorge Newbery

Tue 11/10

8:05 pm-12:18 pm

2 stops21h 13m

$1,061
Quickest round-trip

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 6/4

7:25 am-7:40 am

2 stops20h 15m

Buenos Aires Jorge Newbery

Wed 6/17

8:05 pm-4:47 pm

2 stops24h 42m

$1,067

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 10/31

1:45 pm-4:00 pm

2 stops22h 15m

Buenos Aires Jorge Newbery

Sun 11/8

5:05 pm-9:58 pm

2 stops33h 53m

$1,069

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 7/14

3:59 pm-4:00 pm

2 stops20h 01m

Buenos Aires Jorge Newbery

Wed 7/22

3:45 pm-10:01 pm

2 stops34h 16m

$1,093

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

What is the cheapest airline that flies from Washington to Buenos Aires Jorge Newbery?

LATAM Airlines is the most popular carrier operating from Washington to Buenos Aires Jorge Newbery

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

20h 24m

Direct flights

None
The fastest flight from State of Washington to Buenos Aires Jorge Newbery Airport takes 20h 24m
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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Frequently asked questions about flying from Washington to Buenos Aires Jorge Newbery Airport

  • 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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