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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 4/30. 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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0 bags

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Find the cheapest flights from Washington to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:57 am - 10:25 pm
SEA
-
EZE
31h 28m
2 stops
Multiple Airlines Logo
9:02 am - 5:42 pm
EZE
-
SEA
36h 40m
2 stops
$878Multiple Airlines
Thu, Apr 23 - Wed, May 6
Multiple Airlines Logo
8:00 am - 3:40 pm
SEA
-
EZE
27h 40m
2 stops
Multiple Airlines Logo
1:10 pm - 9:47 pm
EZE
-
SEA
36h 37m
1 stop
$892Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
8:00 am - 10:00 am
SEA
-
EZE
46h 00m
2 stops
Multiple Airlines Logo
1:10 pm - 9:47 pm
EZE
-
SEA
36h 37m
1 stop
$894Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
10:57 am - 10:25 pm
SEA
-
EZE
31h 28m
2 stops
Multiple Airlines Logo
9:02 am - 5:42 pm
EZE
-
SEA
36h 40m
2 stops
$907Multiple Airlines
Thu, Apr 23 - Wed, May 6
LATAM Airlines Logo
10:00 am - 12:22 pm
PDX
-
EZE
22h 22m
2 stops
LATAM Airlines Logo
8:10 pm - 10:37 am
EZE
-
PDX
18h 27m
1 stop
$997LATAM Airlines
Thu, Aug 6 - Mon, Aug 31
United Airlines Logo
11:15 pm - 8:00 am
PDX
-
EZE
28h 45m
2 stops
United Airlines Logo
9:00 pm - 8:55 pm
EZE
-
PDX
27h 55m
2 stops
$1,001United Airlines
Sun, Aug 16 - Wed, Aug 26
LATAM Airlines Logo
9:45 pm - 9:45 am
PDX
-
EZE
32h 00m
1 stop
LATAM Airlines Logo
8:10 pm - 10:37 am
EZE
-
PDX
18h 27m
1 stop
$1,011LATAM Airlines
Sun, Aug 16 - Wed, Aug 26
United Airlines Logo
7:00 am - 8:00 am
PDX
-
EZE
21h 00m
1 stop
United Airlines Logo
9:00 pm - 7:38 pm
EZE
-
PDX
26h 38m
1 stop
$1,047United Airlines
Wed, Apr 22 - Thu, Apr 30
Delta Logo
12:27 pm - 9:20 am
GEG
-
EZE
16h 53m
2 stops
Delta Logo
1:10 pm - 11:17 am
EZE
-
GEG
26h 07m
2 stops
$1,433Delta
Wed, May 13 - Thu, May 21
Delta Logo
12:27 pm - 9:45 am
GEG
-
EZE
17h 18m
1 stop
Delta Logo
8:10 pm - 11:17 am
EZE
-
GEG
19h 07m
1 stop
$1,473Delta
Tue, May 12 - Sat, May 23

LATAM Airlines flights from State of Washington to Buenos Aires

Our best LATAM Airlines deals on State of Washington to Buenos Aires flight tickets
LATAM Airlines
Aug 6
PDX10:00 amPortland
22h 22m
2 stops
EZE12:22 pmBuenos Aires Ministro Pistarini
Aug 31
EZE8:10 pmBuenos Aires Ministro Pistarini
18h 27m
1 stop
PDX10:37 amPortland
$997
LATAM Airlines
Aug 16
PDX9:45 pmPortland
32h 00m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
Aug 26
EZE8:10 pmBuenos Aires Ministro Pistarini
18h 27m
1 stop
PDX10:37 amPortland
$1,011
LATAM Airlines
Aug 3
PDX11:00 pmPortland
30h 45m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
Aug 31
EZE8:10 pmBuenos Aires Ministro Pistarini
18h 27m
1 stop
PDX10:37 amPortland
$1,030

United Airlines flights from State of Washington to Buenos Aires

Our best United Airlines deals on State of Washington to Buenos Aires flight tickets
United Airlines
Aug 16
PDX11:15 pmPortland
28h 45m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 26
EZE9:00 pmBuenos Aires Ministro Pistarini
27h 55m
2 stops
PDX8:55 pmPortland
$1,001
United Airlines
Apr 22
PDX7:00 amPortland
21h 00m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 30
EZE9:00 pmBuenos Aires Ministro Pistarini
26h 38m
1 stop
PDX7:38 pmPortland
$1,047
United Airlines
Apr 13
PDX8:40 amPortland
19h 20m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
Apr 20
EZE9:00 pmBuenos Aires Ministro Pistarini
25h 07m
3 stops
PDX6:07 pmPortland
$1,051

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Buenos Aires 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 4, 2026.
Use the filters below to find and compare flights from Washington to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 4/23

10:57 am-10:25 pm

2 stops31h 28m

Buenos Aires Ministro Pistarini

Wed 5/6

9:02 am-5:42 pm

2 stops36h 40m

$878

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 4/14

8:00 am-3:40 pm

2 stops27h 40m

Buenos Aires Ministro Pistarini

Tue 4/21

1:10 pm-9:47 pm

1 stop36h 37m

$892

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 4/14

8:00 am-10:00 am

2 stops46h 00m

Buenos Aires Ministro Pistarini

Tue 4/21

1:10 pm-9:47 pm

1 stop36h 37m

$894

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 4/23

10:57 am-10:25 pm

2 stops31h 28m

Buenos Aires Ministro Pistarini

Wed 5/6

9:02 am-5:42 pm

2 stops36h 40m

$907

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 8/6

10:00 am-12:22 pm

2 stops22h 22m

Buenos Aires Ministro Pistarini

Mon 8/31

8:10 pm-10:37 am

1 stop18h 27m

$997

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 8/16

11:15 pm-8:00 am

2 stops28h 45m

Buenos Aires Ministro Pistarini

Wed 8/26

9:00 pm-8:55 pm

2 stops27h 55m

$1,001

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 8/16

9:45 pm-9:45 am

1 stop32h 00m

Buenos Aires Ministro Pistarini

Wed 8/26

8:10 pm-10:37 am

1 stop18h 27m

$1,011

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Wed 4/22

7:00 am-8:00 am

1 stop21h 00m

Buenos Aires Ministro Pistarini

Thu 4/30

9:00 pm-7:38 pm

1 stop26h 38m

$1,047

SpokaneBuenos Aires

GEG - EZE

GEGEZE

Spokane

Wed 5/13

12:27 pm-9:20 am

2 stops16h 53m

Buenos Aires Ministro Pistarini

Thu 5/21

1:10 pm-11:17 am

2 stops26h 07m

$1,433

SpokaneBuenos Aires

GEG - EZE

GEGEZE

Spokane

Tue 5/12

12:27 pm-9:45 am

1 stop17h 18m

Buenos Aires Ministro Pistarini

Sat 5/23

8:10 pm-11:17 am

1 stop19h 07m

$1,473

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

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 month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from State of Washington is in June. Flight prices, which tend to average around $1,147, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of June, then book flights to Buenos Aires from State of Washington during May instead. Flights to Buenos Aires in May, while not as cheap as those in June, still average around $1,260.

Can stopping save me money on State of Washington to Buenos Aires flights?

You could potentially save up to 13% on your flight if you consider stops on a State of Washington to Buenos Aires flight.

Cheap State of Washington to Buenos Aires flight deals and tips

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

Fastest flight time

14h 56m

Direct flights

None
The fastest flight from State of Washington to Buenos Aires takes 14h 56m
There are no direct flights from State of Washington to Buenos Aires. There are no popular flight routes from State of Washington to Buenos Aires.
Search flight deals

  • When did momondo last update prices for flights from Washington to Buenos Aires?

    Prices for flights from Washington to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Buenos Aires?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Buenos Aires.

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

    The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Buenos Aires

Compare and see reviews for airlines that fly from State of Washington to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $297Free CancellationRating
7.9
8,246 reviews
Search Delta flights
LATAM AirlinesPriceFrom $696Free CancellationRating
7.4
1,916 reviews
Search LATAM Airlines flights
American AirlinesPriceFrom $1,036Free CancellationRating
7.1
11,380 reviews
Search American Airlines flights
United AirlinesPriceFrom $1,116Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Washington to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits 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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buenos Aires from Washington.

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

Yes momondo offers price alerts on flights to Buenos Aires from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport