SEA - BUE

$439 Find Cheap Flights from Seattle to Buenos Aires

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Buenos Aires departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Buenos Aires, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Buenos Aires, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,037
Typical prices: $1,251-$1,736
Multiple Airlines
Wed 4/15Wed 4/22
SEA - EZE • 2 stops
Cheapest one-way
$439
Multiple Airlines
Mon 4/13
SEA - AEP • 3 stops
Top airlines
Cheapest • from $1,199 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Buenos Aires. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $755 (round-trip)
Shortest trip • 15h 49m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 13% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Buenos Aires (SEA-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Buenos Aires that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Buenos Aires

Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
10:09 am - 10:25 pm
SEA
-
EZE
32h 16m
2 stops
Multiple Airlines Logo
10:45 pm - 9:47 pm
EZE
-
SEA
27h 02m
1 stop
$1,037Multiple Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
9:40 pm - 7:55 am
SEA
-
EZE
30h 15m
2 stops
Multiple Airlines Logo
8:00 am - 9:47 pm
EZE
-
SEA
17h 47m
1 stop
$1,113Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
8:00 am - 7:15 pm
SEA
-
EZE
31h 15m
1 stop
Multiple Airlines Logo
10:45 pm - 9:47 pm
EZE
-
SEA
27h 02m
1 stop
$1,119Multiple Airlines
Wed, Apr 22 - Wed, May 6
Multiple Airlines Logo
9:41 pm - 5:40 am
SEA
-
EZE
27h 59m
2 stops
Multiple Airlines Logo
4:50 pm - 11:47 am
EZE
-
SEA
22h 57m
2 stops
$1,145Multiple Airlines
Sat, May 2 - Mon, May 11
Multiple Airlines Logo
3:55 pm - 12:50 am
SEA
-
EZE
28h 55m
2 stops
Multiple Airlines Logo
1:10 pm - 9:47 pm
EZE
-
SEA
36h 37m
1 stop
$1,146Multiple Airlines
Sat, Aug 22 - Sun, Aug 30
Copa Airlines Logo
6:51 pm - 2:30 am
SEA
-
EZE
27h 39m
2 stops
Copa Airlines Logo
3:48 am - 9:56 pm
EZE
-
SEA
22h 08m
2 stops
$1,199Copa Airlines
Wed, May 6 - Mon, May 18
LATAM Airlines Logo
7:25 am - 7:40 am
SEA
-
AEP
20h 15m
2 stops
LATAM Airlines Logo
7:20 pm - 2:30 pm
AEP
-
SEA
23h 10m
2 stops
$1,239LATAM Airlines
Wed, Jun 24 - Wed, Jul 1
LATAM Airlines Logo
7:20 am - 2:50 pm
SEA
-
AEP
27h 30m
2 stops
LATAM Airlines Logo
3:45 pm - 7:33 pm
AEP
-
SEA
31h 48m
2 stops
$1,266LATAM Airlines
Wed, Aug 5 - Wed, Aug 26
LATAM Airlines Logo
7:20 am - 7:40 am
SEA
-
AEP
20h 20m
2 stops
LATAM Airlines Logo
6:20 pm - 12:58 pm
AEP
-
SEA
22h 38m
2 stops
$1,274LATAM Airlines
Sun, May 10 - Tue, Jun 2
LATAM Airlines Logo
11:35 pm - 7:40 am
SEA
-
AEP
28h 05m
2 stops
LATAM Airlines Logo
5:00 pm - 10:05 am
AEP
-
SEA
21h 05m
2 stops
$1,289LATAM Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Buenos Aires flights

Get data-powered insights and trends into flights from Seattle to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Buenos Aires?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Buenos Aires departing in April.

What is the cheapest month to fly from Seattle to Buenos Aires?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Buenos Aires is June, where tickets cost $1,147 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $1,522 and $1,447 respectively.

Good to know

Low seasonJuly
Cheapest flight$439
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from Seattle to Buenos Aires Jorge Newbery

When to book flights from Seattle to Buenos Aires

Are your dates flexible? Find out the best times to travel from Seattle to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Buenos Aires

  • What is the cheapest flight from Seattle to Buenos Aires?

    In the last 3 days, the lowest price for a flight from Seattle to Buenos Aires was $439 for a one-way ticket and $1,037 for a round-trip.

  • Do I need a passport to fly between Seattle and Buenos Aires?

    Yes, you’ll need a passport to travel to Buenos Aires from Seattle.

  • Which airports will I be using when flying from Seattle to Buenos Aires?

    Seattle is served by only 1 airport and there are 2 airports in Buenos Aires. You will leave Seattle from Seattle/Tacoma Intl and you will be arriving in Buenos Aires at one of these airports: Buenos Aires Jorge Newbery or Buenos Aires Ministro Pistarini.

  • Which aircraft models fly most regularly from Seattle to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Buenos Aires?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Seattle and Buenos Aires, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Buenos Aires, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Buenos Aires are Delta and United Airlines. With an average price for the route of $1,389 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,345 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Seattle to Buenos Aires?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Buenos Aires?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buenos Aires from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Seattle to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Buenos Aires? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8312 reviews
8.1Boarding
7.2Food
7.8Entertainment
8.5Crew
7.9Comfort
Airline reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

2.0 MediocreAnonymous, Mar 2026
HNL - ATL
Read more Delta reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Nothing I like, I missed this connection b/c of an earlier flight delay. I had to stay one more night and I paid out my own pocket. LATAM failed to send me to a safe and decent hotel.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Apart of Sky miles delta. And they go everywhere in Brazil

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Business class seats felt very cramped compared to other airlines.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

Flight was scheduled at 11:26am but they keep Delaying until midnight. They waited at airport restless.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

Great experience. Good dinner and service. FA's were very nice and attentive.

It was great. Smooth flight, comfortable, left on time and landed on time.

Perhaps this is an airport issue, but being in a takeoff queue for over an hour in the taxiing lane is unacceptable. We will definitely be seeking alternative avenues for air travel in the future.

We hoarded. Then we deplaned. Then we waited for 10 hours in the MSP airport due to a wheel misfunction. We understand safety but communication between crew and airport staff was horrible. When we did finally board, we were rushed on and because we were waiting for a “fresh” pilot and crew, we sat in a roasting plane with no A/C for an hour. My question is why was this flight not cancelled right away when they knew this would be a huge issue OR, why did AA not get a substitute plane, considering this was already a full flight? To me, this appears to be a complete breakdown in leadership and utter systems failure. The compensation for completely disrupting travel plans for hundreds, which we paid dearly for, was measly. While we appreciated the lodging for the night, $12 in meal vouchers isn’t going to sustain anyone for over 12 hours. “We apologize; our hands are tied” is no longer an acceptable explanation. We are so completely turned off by this experience and will definitely seek alternative avenues when we need to fly.

Mostly good. The WiFi wasn’t working so that was not great.

I rated the experience "mediocre" because of the 2 hour delay in take off. This is the 4th flight from DFW on AA where there was a delay and in one of the instances (after 13 delays), the flight was cancelled. I understand weather but for the March 18th flight, there was no weather issue in Dallas or Detroit. I called Concierge Key and they were wonderful, booking me on a later flight in case my flight was cancelled. I have flown with American for many years and never has there been this consistent pattern of delays. Very disappointing.

They put me on an earlier and I got home sooner

Not good. One of my luggage is missing. And until now they can’t find it

Everything you need to know for your flight from Seattle to Buenos Aires

Information on your arrival and departure airports