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Cheap flights from Washington to Buenos Aires from $439

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 5/7. 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
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
11:51 am - 9:30 pm
PDX
-
AEP
29h 39m
2 stops
LATAM Airlines Logo
8:05 pm - 7:05 pm
AEP
-
PDX
27h 00m
2 stops
$1,111LATAM Airlines
Tue, Apr 21 - Tue, Apr 28
LATAM Airlines Logo
11:20 am - 2:50 pm
PDX
-
AEP
23h 30m
2 stops
LATAM Airlines Logo
3:45 pm - 12:36 pm
AEP
-
PDX
24h 51m
2 stops
$1,118LATAM Airlines
Wed, May 6 - Wed, May 13
Delta Logo
11:51 am - 4:00 pm
PDX
-
AEP
24h 09m
2 stops
Delta Logo
3:45 pm - 10:16 pm
AEP
-
PDX
34h 31m
2 stops
$1,127Delta
Tue, Apr 21 - Wed, Apr 29
LATAM Airlines Logo
9:39 pm - 7:40 am
PDX
-
AEP
30h 01m
2 stops
LATAM Airlines Logo
3:45 pm - 12:25 pm
AEP
-
PDX
24h 40m
2 stops
$1,187LATAM Airlines
Wed, May 20 - Wed, Jun 10
LATAM Airlines Logo
10:00 am - 2:50 pm
PDX
-
AEP
24h 50m
2 stops
LATAM Airlines Logo
11:45 am - 12:13 pm
AEP
-
PDX
28h 28m
2 stops
$1,229LATAM Airlines
Thu, Aug 27 - Sun, Sep 13
LATAM Airlines Logo
6:50 am - 7:40 am
PDX
-
AEP
20h 50m
2 stops
LATAM Airlines Logo
2:55 pm - 10:06 am
AEP
-
PDX
23h 11m
2 stops
$1,235LATAM Airlines
Thu, May 7 - Thu, May 14
LATAM Airlines Logo
6:35 am - 7:40 am
PDX
-
AEP
21h 05m
2 stops
LATAM Airlines Logo
8:05 pm - 12:13 pm
AEP
-
PDX
20h 08m
2 stops
$1,247LATAM Airlines
Mon, Jul 6 - Sun, Aug 9
Multiple Airlines Logo
11:15 pm - 5:40 am
PDX
-
AEP
26h 25m
3 stops
Multiple Airlines Logo
8:05 pm - 11:54 pm
AEP
-
PDX
31h 49m
3 stops
$1,254Multiple Airlines
Thu, Jun 4 - Mon, Jun 22
LATAM Airlines Logo
2:08 pm - 4:00 pm
PDX
-
AEP
21h 52m
2 stops
LATAM Airlines Logo
5:35 pm - 12:13 pm
AEP
-
PDX
22h 38m
2 stops
$1,257LATAM Airlines
Mon, Aug 3 - Fri, Sep 4
LATAM Airlines Logo
6:28 am - 7:40 am
PDX
-
AEP
21h 12m
2 stops
LATAM Airlines Logo
3:45 pm - 10:41 am
AEP
-
PDX
22h 56m
2 stops
$1,262LATAM Airlines
Tue, Apr 21 - Fri, May 1

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
Apr 21
PDX11:51 amPortland
29h 39m
2 stops
AEP9:30 pmBuenos Aires Jorge Newbery
Apr 28
AEP8:05 pmBuenos Aires Jorge Newbery
27h 00m
2 stops
PDX7:05 pmPortland
$1,111
LATAM Airlines
May 6
PDX11:20 amPortland
23h 30m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
May 13
AEP3:45 pmBuenos Aires Jorge Newbery
24h 51m
2 stops
PDX12:36 pmPortland
$1,118
LATAM Airlines
May 20
PDX9:39 pmPortland
30h 01m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Jun 10
AEP3:45 pmBuenos Aires Jorge Newbery
24h 40m
2 stops
PDX12:25 pmPortland
$1,187

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
Apr 21
PDX11:51 amPortland
24h 09m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Apr 29
AEP3:45 pmBuenos Aires Jorge Newbery
34h 31m
2 stops
PDX10:16 pmPortland
$1,127
Delta
Apr 21
PDX6:45 amPortland
20h 55m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
May 3
AEP3:45 pmBuenos Aires Jorge Newbery
22h 56m
2 stops
PDX10:41 amPortland
$1,322
Delta
Jul 12
SEA9:20 pmSeattle/Tacoma Intl
30h 20m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Jul 19
AEP3:45 pmBuenos Aires Jorge Newbery
28h 55m
2 stops
SEA4:40 pmSeattle/Tacoma Intl
$1,347

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 March 26, 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

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/21

11:51 am-9:30 pm

2 stops29h 39m

Buenos Aires Jorge Newbery

Tue 4/28

8:05 pm-7:05 pm

2 stops27h 00m

$1,111

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 5/6

11:20 am-2:50 pm

2 stops23h 30m

Buenos Aires Jorge Newbery

Wed 5/13

3:45 pm-12:36 pm

2 stops24h 51m

$1,118

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/21

11:51 am-4:00 pm

2 stops24h 09m

Buenos Aires Jorge Newbery

Wed 4/29

3:45 pm-10:16 pm

2 stops34h 31m

$1,127

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 5/20

9:39 pm-7:40 am

2 stops30h 01m

Buenos Aires Jorge Newbery

Wed 6/10

3:45 pm-12:25 pm

2 stops24h 40m

$1,187

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Thu 8/27

10:00 am-2:50 pm

2 stops24h 50m

Buenos Aires Jorge Newbery

Sun 9/13

11:45 am-12:13 pm

2 stops28h 28m

$1,229

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Thu 5/7

6:50 am-7:40 am

2 stops20h 50m

Buenos Aires Jorge Newbery

Thu 5/14

2:55 pm-10:06 am

2 stops23h 11m

$1,235
Quickest round-trip

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Mon 7/6

6:35 am-7:40 am

2 stops21h 05m

Buenos Aires Jorge Newbery

Sun 8/9

8:05 pm-12:13 pm

2 stops20h 08m

$1,247

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Thu 6/4

11:15 pm-5:40 am

3 stops26h 25m

Buenos Aires Jorge Newbery

Mon 6/22

8:05 pm-11:54 pm

3 stops31h 49m

$1,254

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Mon 8/3

2:08 pm-4:00 pm

2 stops21h 52m

Buenos Aires Jorge Newbery

Fri 9/4

5:35 pm-12:13 pm

2 stops22h 38m

$1,257

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 4/21

6:28 am-7:40 am

2 stops21h 12m

Buenos Aires Jorge Newbery

Fri 5/1

3:45 pm-10:41 am

2 stops22h 56m

$1,262

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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

18h 48m

Direct flights

None
The fastest flight from State of Washington to Buenos Aires Jorge Newbery Airport takes 18h 48m
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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