Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Washington to Buenos Aires from $376

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 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
11:30 pm - 7:55 am
SEA
-
AEP
28h 25m2 stops
LATAM Airlines Logo
8:05 pm - 9:48 pm
AEP
-
SEA
29h 43m2 stops
$966LATAM Airlines
Sun, Mar 22 - Sun, Mar 29
LATAM Airlines Logo
9:40 am - 10:30 am
SEA
-
AEP
20h 50m2 stops
LATAM Airlines Logo
6:20 pm - 12:32 pm
AEP
-
SEA
22h 12m2 stops
$1,003LATAM Airlines
Mon, Mar 16 - Tue, Mar 31
LATAM Airlines Logo
9:40 am - 10:30 am
SEA
-
AEP
20h 50m2 stops
LATAM Airlines Logo
5:05 pm - 2:41 pm
AEP
-
SEA
25h 36m2 stops
$1,033LATAM Airlines
Mon, Mar 16 - Tue, Mar 31
LATAM Airlines Logo
7:10 am - 10:30 am
SEA
-
AEP
22h 20m2 stops
LATAM Airlines Logo
8:25 pm - 9:56 pm
AEP
-
SEA
29h 31m2 stops
$1,035LATAM Airlines
Fri, Mar 6 - Sun, Mar 15
LATAM Airlines Logo
11:30 pm - 9:40 am
SEA
-
AEP
30h 10m2 stops
LATAM Airlines Logo
10:35 am - 10:58 am
AEP
-
SEA
28h 23m2 stops
$1,041LATAM Airlines
Sun, Mar 29 - Wed, Apr 15
LATAM Airlines Logo
7:10 am - 10:30 am
SEA
-
AEP
22h 20m2 stops
LATAM Airlines Logo
8:25 pm - 9:49 pm
AEP
-
SEA
29h 24m2 stops
$1,043LATAM Airlines
Fri, Mar 6 - Sun, Mar 15
LATAM Airlines Logo
8:40 am - 10:30 am
SEA
-
AEP
20h 50m2 stops
LATAM Airlines Logo
5:15 pm - 9:48 pm
AEP
-
SEA
32h 33m2 stops
$1,046LATAM Airlines
Fri, Mar 6 - Sun, Mar 15
LATAM Airlines Logo
7:20 am - 10:30 am
SEA
-
AEP
23h 10m2 stops
LATAM Airlines Logo
3:40 pm - 12:49 pm
AEP
-
SEA
25h 09m2 stops
$1,061LATAM Airlines
Mon, Mar 9 - Mon, Mar 23
Multiple Airlines Logo
6:00 am - 7:40 am
SEA
-
AEP
21h 40m2 stops
Multiple Airlines Logo
5:05 pm - 10:17 am
AEP
-
SEA
45h 12m2 stops
$1,087Multiple Airlines
Mon, May 18 - Mon, May 25
Multiple Airlines Logo
10:58 am - 10:30 am
PDX
-
AEP
19h 32m2 stops
Multiple Airlines Logo
5:05 pm - 10:10 pm
AEP
-
PDX
33h 05m2 stops
$1,126Multiple Airlines
Wed, Mar 18 - Mon, Mar 30

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 22
SEA11:30 pmSeattle/Tacoma Intl
28h 25m
2 stops
AEP7:55 amBuenos Aires Jorge Newbery
Mar 29
AEP8:05 pmBuenos Aires Jorge Newbery
29h 43m
2 stops
SEA9:48 pmSeattle/Tacoma Intl
$966
Find similar
LATAM Airlines
Mar 16
SEA9:40 amSeattle/Tacoma Intl
20h 50m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 31
AEP6:20 pmBuenos Aires Jorge Newbery
22h 12m
2 stops
SEA12:32 pmSeattle/Tacoma Intl
$1,003
Find similar
LATAM Airlines
Mar 16
SEA9:40 amSeattle/Tacoma Intl
20h 50m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 31
AEP5:05 pmBuenos Aires Jorge Newbery
25h 36m
2 stops
SEA2:41 pmSeattle/Tacoma Intl
$1,033
Find similar

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 December 23, 2025.
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

Sun 3/22

11:30 pm-7:55 am

2 stops28h 25m

Buenos Aires Jorge Newbery

Sun 3/29

8:05 pm-9:48 pm

2 stops29h 43m

$966

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/16

9:40 am-10:30 am

2 stops20h 50m

Buenos Aires Jorge Newbery

Tue 3/31

6:20 pm-12:32 pm

2 stops22h 12m

$1,003

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/16

9:40 am-10:30 am

2 stops20h 50m

Buenos Aires Jorge Newbery

Tue 3/31

5:05 pm-2:41 pm

2 stops25h 36m

$1,033

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 3/6

7:10 am-10:30 am

2 stops22h 20m

Buenos Aires Jorge Newbery

Sun 3/15

8:25 pm-9:56 pm

2 stops29h 31m

$1,035

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 3/29

11:30 pm-9:40 am

2 stops30h 10m

Buenos Aires Jorge Newbery

Wed 4/15

10:35 am-10:58 am

2 stops28h 23m

$1,041

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 3/6

7:10 am-10:30 am

2 stops22h 20m

Buenos Aires Jorge Newbery

Sun 3/15

8:25 pm-9:49 pm

2 stops29h 24m

$1,043

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 3/6

8:40 am-10:30 am

2 stops20h 50m

Buenos Aires Jorge Newbery

Sun 3/15

5:15 pm-9:48 pm

2 stops32h 33m

$1,046

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/9

7:20 am-10:30 am

2 stops23h 10m

Buenos Aires Jorge Newbery

Mon 3/23

3:40 pm-12:49 pm

2 stops25h 09m

$1,061

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 5/18

6:00 am-7:40 am

2 stops21h 40m

Buenos Aires Jorge Newbery

Mon 5/25

5:05 pm-10:17 am

2 stops45h 12m

$1,087

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 3/18

10:58 am-10:30 am

2 stops19h 32m

Buenos Aires Jorge Newbery

Mon 3/30

5:05 pm-10:10 pm

2 stops33h 05m

$1,126

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Buenos Aires from

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 day to depart on your flight to Buenos Aires Jorge Newbery Airport?

The cheapest day to depart from State of Washington to Buenos Aires Jorge Newbery Airport is on a Wednesday. Travelers who choose to depart for Buenos Aires Jorge Newbery Airport on a Wednesday will often find tickets for as low as $1,227. The most expensive day to fly to Buenos Aires Jorge Newbery Airport is Saturday, with ticket prices averaging around $1,963.

What is the cheapest time of day to depart on your flight to Buenos Aires Jorge Newbery Airport?

Flying to Buenos Aires Jorge Newbery Airport from State of Washington in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,265 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to Buenos Aires Jorge Newbery Airport, so prices are often more expensive at around $1,338 per ticket.

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 03m

Direct flights

None
The fastest flight from State of Washington to Buenos Aires Jorge Newbery Airport takes 19h 03m
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.
Search flight deals

  • 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 many operators does momondo search for flights from Washington to Buenos Aires Jorge Newbery Airport?

  • 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.

An easier way to manage your Buenos Aires Jorge Newbery Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 1/22
Thu 1/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Buenos Aires

Popular cities in Argentina

Popular flights according to clicks in the last 7 days on momondo
Flights to Buenos Aires Ministro Pistarini Airportfrom $569