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Cheap flights from Washington to Buenos Aires from $357

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 10/27. 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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Find the cheapest flights from Washington to Buenos Aires

Cheap round-trip flights

Logo
8:30 am - 7:15 pmSEA-EZE
30h 45m1 stop
Logo
8:00 am - 10:30 pmEZE-SEA
18h 30m1 stop
$955
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mié., oct. 8 - mié., oct. 15
Logo
10:50 am - 5:50 amSEA-EZE
38h 00m2 stops
Logo
7:35 am - 10:44 amEZE-SEA
32h 09m2 stops
$968
Find Deal
lun., nov. 10 - lun., nov. 17
Copa Airlines Logo
5:14 pm - 12:55 amSEA-EZE
27h 41m2 stops
Copa Airlines Logo
10:06 am - 11:56 amEZE-SEA
29h 50m2 stops
$1,008Copa Airlines
Find Deal
mié., sep. 17 - mié., sep. 24
Copa Airlines Logo
5:20 pm - 7:59 amSEA-EZE
33h 39m2 stops
Copa Airlines Logo
2:32 pm - 10:30 pmEZE-SEA
36h 58m2 stops
$1,054Copa Airlines
Find Deal
mié., nov. 12 - mié., nov. 19
Air Canada Logo
5:30 am - 2:30 pmSEA-EZE
29h 00m3 stops
Air Canada Logo
4:45 pm - 2:31 pmEZE-SEA
25h 46m3 stops
$1,095Air Canada
Find Deal
vie., oct. 24 - vie., oct. 31
LATAM Airlines Logo
1:40 pm - 2:00 pmSEA-EZE
20h 20m2 stops
LATAM Airlines Logo
7:43 pm - 2:38 pmEZE-SEA
23h 55m2 stops
$1,125LATAM Airlines
Find Deal
mar., oct. 28 - mié., nov. 5
LATAM Airlines Logo
9:30 am - 10:30 amSEA-AEP
20h 00m2 stops
LATAM Airlines Logo
6:20 pm - 2:23 pmAEP-SEA
24h 03m2 stops
$1,125LATAM Airlines
Find Deal
lun., ene. 26 - mar., mar. 10
Delta Logo
11:45 am - 9:00 amPDX-EZE
16h 15m1 stop
Delta Logo
10:25 pm - 9:35 pmEZE-PDX
28h 10m1 stop
$1,125Delta
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jue., ene. 8 - lun., feb. 2
Delta Logo
10:05 pm - 10:15 amPDX-EZE
31h 10m2 stops
Delta Logo
8:55 pm - 11:05 amEZE-PDX
19h 10m1 stop
$1,130Delta
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dom., ene. 4 - mié., feb. 18
Air Canada Logo
8:15 am - 3:10 pmSEA-EZE
26h 55m2 stops
Air Canada Logo
4:45 pm - 7:16 pmEZE-SEA
31h 31m3 stops
$1,159Air Canada
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mar., oct. 28 - mié., nov. 5

Copa Airlines flights from State of Washington to Buenos Aires

Our best Copa Airlines deals on State of Washington to Buenos Aires flight tickets
Copa Airlines
Sep 17
SEA5:14 pmSeattle/Tacoma Intl
27h 41m
2 stops
EZE12:55 amBuenos Aires Ministro Pistarini
Sep 24
EZE10:06 amBuenos Aires Ministro Pistarini
29h 50m
2 stops
SEA11:56 amSeattle/Tacoma Intl
$1,008
Find similar
Copa Airlines
Nov 12
SEA5:20 pmSeattle/Tacoma Intl
33h 39m
2 stops
EZE7:59 amBuenos Aires Ministro Pistarini
Nov 19
EZE2:32 pmBuenos Aires Ministro Pistarini
36h 58m
2 stops
SEA10:30 pmSeattle/Tacoma Intl
$1,054
Find similar
Copa Airlines
Oct 13
SEA5:31 pmSeattle/Tacoma Intl
24h 37m
2 stops
EZE10:08 pmBuenos Aires Ministro Pistarini
Nov 6
EZE2:32 pmBuenos Aires Ministro Pistarini
36h 58m
2 stops
SEA10:30 pmSeattle/Tacoma Intl
$1,083
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Air Canada flights from State of Washington to Buenos Aires

Our best Air Canada deals on State of Washington to Buenos Aires flight tickets
Air Canada
Oct 24
SEA5:30 amSeattle/Tacoma Intl
29h 00m
3 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Oct 31
EZE4:45 pmBuenos Aires Ministro Pistarini
25h 46m
3 stops
SEA2:31 pmSeattle/Tacoma Intl
$1,095
Find similar
Air Canada
Oct 28
SEA8:15 amSeattle/Tacoma Intl
26h 55m
2 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Nov 5
EZE4:45 pmBuenos Aires Ministro Pistarini
31h 31m
3 stops
SEA7:16 pmSeattle/Tacoma Intl
$1,159
Find similar
Air Canada
Dec 2
SEA5:50 amSeattle/Tacoma Intl
28h 20m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Dec 14
EZE4:45 pmBuenos Aires Ministro Pistarini
45h 46m
3 stops
SEA9:31 amSeattle/Tacoma Intl
$1,164
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 septiembre 10, 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

mié. 10/8

8:30 am-7:15 pm

1 stop30h 45m

Buenos Aires Ministro Pistarini

mié. 10/15

8:00 am-10:30 pm

1 stop18h 30m

$955

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

lun. 11/10

10:50 am-5:50 am

2 stops38h 00m

Buenos Aires Ministro Pistarini

lun. 11/17

7:35 am-10:44 am

2 stops32h 09m

$968

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

mié. 9/17

5:14 pm-12:55 am

2 stops27h 41m

Buenos Aires Ministro Pistarini

mié. 9/24

10:06 am-11:56 am

2 stops29h 50m

$1,008

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

mié. 11/12

5:20 pm-7:59 am

2 stops33h 39m

Buenos Aires Ministro Pistarini

mié. 11/19

2:32 pm-10:30 pm

2 stops36h 58m

$1,054

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

vie. 10/24

5:30 am-2:30 pm

3 stops29h 00m

Buenos Aires Ministro Pistarini

vie. 10/31

4:45 pm-2:31 pm

3 stops25h 46m

$1,095

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

mar. 10/28

1:40 pm-2:00 pm

2 stops20h 20m

Buenos Aires Ministro Pistarini

mié. 11/5

7:43 pm-2:38 pm

2 stops23h 55m

$1,125

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

lun. 1/26

9:30 am-10:30 am

2 stops20h 00m

Buenos Aires Jorge Newbery

mar. 3/10

6:20 pm-2:23 pm

2 stops24h 03m

$1,125

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

jue. 1/8

11:45 am-9:00 am

1 stop16h 15m

Buenos Aires Ministro Pistarini

lun. 2/2

10:25 pm-9:35 pm

1 stop28h 10m

$1,125

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

dom. 1/4

10:05 pm-10:15 am

2 stops31h 10m

Buenos Aires Ministro Pistarini

mié. 2/18

8:55 pm-11:05 am

1 stop19h 10m

$1,130

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

mar. 10/28

8:15 am-3:10 pm

2 stops26h 55m

Buenos Aires Ministro Pistarini

mié. 11/5

4:45 pm-7:16 pm

3 stops31h 31m

$1,159

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 $1,267, 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 $1,278.

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.

How far in advance should I book a flight to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,373 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from State of Washington for as low as $1,197 on momondo.

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 $1,100Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $1,133Free CancellationRating
7.9
7,963 reviews
Search Delta flights
United AirlinesPriceFrom $1,200Free CancellationRating
7.4
8,937 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