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Cheap flights from Washington to Buenos Aires from $387

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 1/18. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:45 am - 9:35 amSEA-EZE
19h 50m1 stop
Multiple Airlines Logo
7:43 pm - 12:42 amEZE-SEA
33h 59m2 stops
$860Multiple Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 17
Multiple Airlines Logo
8:45 am - 9:35 amSEA-EZE
19h 50m1 stop
Multiple Airlines Logo
11:00 am - 10:30 pmEZE-SEA
40h 30m1 stop
$887Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Multiple Airlines Logo
8:45 am - 9:35 amSEA-EZE
19h 50m1 stop
Multiple Airlines Logo
2:40 am - 10:45 amEZE-SEA
37h 05m2 stops
$888Multiple Airlines
Find Deal
Mon, Dec 8 - Tue, Dec 16
Multiple Airlines Logo
8:45 am - 9:35 amSEA-EZE
19h 50m1 stop
Multiple Airlines Logo
11:00 am - 11:22 amEZE-SEA
29h 22m1 stop
$894Multiple Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 17
LATAM Airlines Logo
9:49 am - 10:30 amSEA-AEP
19h 41m2 stops
LATAM Airlines Logo
8:25 pm - 2:45 pmAEP-SEA
22h 20m2 stops
$1,030LATAM Airlines
Find Deal
Mon, Jan 26 - Tue, Mar 10
LATAM Airlines Logo
7:15 am - 10:30 amSEA-AEP
22h 15m2 stops
LATAM Airlines Logo
6:20 pm - 2:50 pmAEP-SEA
25h 30m2 stops
$1,060LATAM Airlines
Find Deal
Tue, Feb 3 - Tue, Mar 3
LATAM Airlines Logo
11:55 am - 6:40 pmSEA-AEP
25h 45m2 stops
LATAM Airlines Logo
2:55 pm - 12:57 pmAEP-SEA
27h 02m2 stops
$1,068LATAM Airlines
Find Deal
Mon, Jan 12 - Thu, Jan 29
Delta Logo
12:40 pm - 9:45 amGEG-EZE
17h 05m1 stop
Delta Logo
8:10 pm - 11:41 amEZE-GEG
19h 31m1 stop
$1,206Delta
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Wed, Apr 1 - Thu, Apr 9
Delta Logo
7:21 pm - 9:45 amGEG-EZE
34h 24m2 stops
Delta Logo
8:10 pm - 11:32 amEZE-GEG
19h 22m1 stop
$1,210Delta
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Tue, Mar 31 - Tue, Apr 14
Delta Logo
10:45 pm - 5:00 pmGEG-EZE
38h 15m2 stops
Delta Logo
8:10 pm - 11:41 amEZE-GEG
19h 31m1 stop
$1,221Delta
Find Deal
Sun, Mar 29 - Tue, Apr 7

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
Jan 26
SEA7:15 amSeattle/Tacoma Intl
21h 00m
2 stops
EZE9:15 amBuenos Aires Ministro Pistarini
Feb 3
EZE7:43 pmBuenos Aires Ministro Pistarini
22h 14m
2 stops
SEA12:57 pmSeattle/Tacoma Intl
$1,009
Find similar
LATAM Airlines
Mar 4
SEA9:49 amSeattle/Tacoma Intl
18h 26m
2 stops
EZE9:15 amBuenos Aires Ministro Pistarini
Mar 26
EZE7:43 pmBuenos Aires Ministro Pistarini
21h 17m
2 stops
SEA1:00 pmSeattle/Tacoma Intl
$1,011
Find similar
LATAM Airlines
Feb 9
SEA7:15 amSeattle/Tacoma Intl
21h 00m
2 stops
EZE9:15 amBuenos Aires Ministro Pistarini
Feb 22
EZE9:55 pmBuenos Aires Ministro Pistarini
29h 30m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$1,030
Find similar

Delta flights from State of Washington to Buenos Aires

Our best Delta deals on State of Washington to Buenos Aires flight tickets
Delta
Jan 5
PDX2:45 pmPortland
34h 20m
2 stops
EZE6:05 amBuenos Aires Ministro Pistarini
Jan 19
EZE8:55 pmBuenos Aires Ministro Pistarini
27h 18m
1 stop
PDX7:13 pmPortland
$1,118
Find similar
Delta
Feb 10
PDX7:00 amPortland
22h 15m
1 stop
EZE10:15 amBuenos Aires Ministro Pistarini
Mar 5
EZE11:55 pmBuenos Aires Ministro Pistarini
23h 21m
2 stops
PDX6:16 pmPortland
$1,130
Find similar
Delta
Jan 29
PDX12:40 amPortland
25h 40m
2 stops
EZE7:20 amBuenos Aires Ministro Pistarini
Mar 2
EZE8:55 pmBuenos Aires Ministro Pistarini
18h 54m
1 stop
PDX10:49 amPortland
$1,170
Find similar

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 November 17, 2025.
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

Mon 12/8

8:45 am-9:35 am

1 stop19h 50m

Buenos Aires Ministro Pistarini

Wed 12/17

7:43 pm-12:42 am

2 stops33h 59m

$860

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 12/8

8:45 am-9:35 am

1 stop19h 50m

Buenos Aires Ministro Pistarini

Mon 12/15

11:00 am-10:30 pm

1 stop40h 30m

$887

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 12/8

8:45 am-9:35 am

1 stop19h 50m

Buenos Aires Ministro Pistarini

Tue 12/16

2:40 am-10:45 am

2 stops37h 05m

$888

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 12/8

8:45 am-9:35 am

1 stop19h 50m

Buenos Aires Ministro Pistarini

Wed 12/17

11:00 am-11:22 am

1 stop29h 22m

$894

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 1/26

9:49 am-10:30 am

2 stops19h 41m

Buenos Aires Jorge Newbery

Tue 3/10

8:25 pm-2:45 pm

2 stops22h 20m

$1,030

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 2/3

7:15 am-10:30 am

2 stops22h 15m

Buenos Aires Jorge Newbery

Tue 3/3

6:20 pm-2:50 pm

2 stops25h 30m

$1,060

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 1/12

11:55 am-6:40 pm

2 stops25h 45m

Buenos Aires Jorge Newbery

Thu 1/29

2:55 pm-12:57 pm

2 stops27h 02m

$1,068

SpokaneBuenos Aires

GEG - EZE

GEGEZE

Spokane

Wed 4/1

12:40 pm-9:45 am

1 stop17h 05m

Buenos Aires Ministro Pistarini

Thu 4/9

8:10 pm-11:41 am

1 stop19h 31m

$1,206

SpokaneBuenos Aires

GEG - EZE

GEGEZE

Spokane

Tue 3/31

7:21 pm-9:45 am

2 stops34h 24m

Buenos Aires Ministro Pistarini

Tue 4/14

8:10 pm-11:32 am

1 stop19h 22m

$1,210

SpokaneBuenos Aires

GEG - EZE

GEGEZE

Spokane

Sun 3/29

10:45 pm-5:00 pm

2 stops38h 15m

Buenos Aires Ministro Pistarini

Tue 4/7

8:10 pm-11:41 am

1 stop19h 31m

$1,221

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 November. Flight prices, which tend to average around $1,250, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, 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 November, still average around $1,283.

What is the cheapest day to depart on your flight to Buenos Aires?

On average, the least expensive day to fly to Buenos Aires from State of Washington is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,328. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Saturday is $1,503.

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

Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from State of Washington to Buenos Aires during this time can be as low as $1,307. Try not to purchase tickets at noon because they tend to be around $1,438. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 10% 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

Direct flights

None
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.
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  • 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
American AirlinesPriceFrom $1,036Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
DeltaPriceFrom $1,115Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $1,200Free CancellationRating
7.4
9,015 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