SEA - BUE

$381 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 11/14. 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

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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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

Sun, Aug 10 - Mon, Aug 25
 Logo
9:07 pm - 11:57 amSEA-EZE
34h 50m2 stops
 Logo
12:58 pm - 12:50 pmEZE-SEA
27h 52m2 stops
Sun, Aug 10 - Mon, Aug 25
 Logo
9:07 pm - 2:40 pmSEA-AEP
37h 33m2 stops
 Logo
3:40 pm - 4:50 pmAEP-SEA
29h 10m2 stops
Wed, Aug 13 - Wed, Aug 27
LATAM Airlines Logo
7:10 am - 6:10 amSEA-EZE
19h 00m2 stops
LATAM Airlines Logo
7:13 pm - 2:38 pmEZE-SEA
23h 25m2 stops
$1,137LATAM Airlines
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Wed, Aug 13 - Wed, Aug 27
LATAM Airlines Logo
1:30 pm - 4:05 pmSEA-AEP
22h 35m2 stops
LATAM Airlines Logo
8:10 pm - 2:38 pmAEP-SEA
22h 28m2 stops
$1,137LATAM Airlines
Find Deal
Tue, Nov 11 - Mon, Nov 24
Delta Logo
7:20 am - 9:00 amSEA-EZE
20h 40m1 stop
Delta Logo
10:50 pm - 12:23 pmEZE-SEA
18h 33m1 stop
$1,175Delta
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Sun, Nov 2 - Thu, Nov 20
Delta Logo
11:35 pm - 9:45 amSEA-EZE
29h 10m2 stops
Delta Logo
10:50 pm - 12:23 pmEZE-SEA
18h 33m1 stop
$1,180Delta
Find Deal
Sun, Nov 2 - Wed, Nov 19
American Airlines Logo
1:33 am - 9:10 amSEA-EZE
26h 37m1 stop
American Airlines Logo
10:30 pm - 12:43 pmEZE-SEA
19h 13m1 stop
$1,190American Airlines
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Sun, Nov 2 - Wed, Nov 19
American Airlines Logo
1:33 am - 9:10 amSEA-EZE
26h 37m1 stop
American Airlines Logo
10:50 pm - 2:48 pmEZE-SEA
20h 58m2 stops
$1,194American Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 17
United Airlines Logo
7:10 am - 7:20 amSEA-EZE
19h 10m1 stop
United Airlines Logo
11:55 pm - 12:47 pmEZE-SEA
17h 52m1 stop
$1,195United Airlines
Find Deal
Sun, Aug 24 - Sun, Sep 7
United Airlines Logo
11:58 pm - 8:00 amSEA-EZE
28h 02m1 stop
United Airlines Logo
9:00 pm - 3:14 pmEZE-SEA
22h 14m2 stops
$1,207United Airlines
Find Deal
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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.

What’s the cheapest day of the week to fly from Seattle to Buenos Aires?

The average price of all round-trip flights from Seattle to Buenos Aires clicked on KAYAK for each day over the last 12 months.

For Seattle to Buenos Aires, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Buenos Aires back to Seattle, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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 October, where tickets cost $1,225 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,638 and $1,519 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Seattle to Buenos Aires, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonAugust
High seasonDecember
Cheapest flight$381
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 19% 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

  • Can I travel with pets on the flight from Seattle to Buenos Aires?

    Delta Air Lines and Alaska Airlines allow pets to travel with their owners in the cabin or as checked baggage. Delta Air Lines permits small dogs, cats, and household birds, while Alaska Airlines allows a wider range of pets, including dogs, cats, rabbits, and birds. Specific guidelines and restrictions apply, such as carrier dimensions and health documentation, so check with the respective airlines for detailed pet travel policies.

  • What services are available for kids on the flight from Seattle to Buenos Aires?

    Delta Air Lines and Alaska Airlines offer various services for young travelers. Delta Air Lines provides Sky Zone, an in-flight entertainment channel dedicated to kids, and complimentary snacks. Alaska Airlines offers the "Fly With Me" animals program, providing collectible plush toys and activity packs. Both airlines also have child-friendly meals and options to pre-board families traveling with children.

  • How can I get from the airport to the city center of Buenos Aires?

    Ezeiza International Airport (Ministro Pistarini) (EZE) is the main airport in Buenos Aires. Taxi services like Taxi Ezeiza, ride-hailing services, and Manuel Tienda León buses are available for transportation to the city center. For Jorge Newbery Airport (AEP), similar transportation options apply. Please verify availability before traveling.

  • Do these airlines cater to special dietary requirements?

    Delta Air Lines and Alaska Airlines offer special meals to accommodate different dietary needs. Delta Air Lines provides vegetarian, vegan, gluten-free, and kosher meals. Alaska Airlines offers special meals for specific dietary preferences, including vegetarian, vegan, gluten-free, and diabetic meals.

  • 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 $381 for a one-way ticket and $995 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.

  • What is the most popular layover when flying to Buenos Aires from Seattle?

    Dallas is the most popular layover city among KAYAK users traveling from Seattle to Buenos Aires.

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

    The two airlines most popular with KAYAK users for flights from Seattle to Buenos Aires are Delta and LATAM Airlines. With an average price for the route of $1,452 and an overall rating of 8.0, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,183 and an overall rating of 7.5.

  • 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.

KAYAK’s top tips for finding a cheap flight from Seattle to Buenos Aires

  • When searching for cheap flights from Seattle to Buenos Aires, consider checking the ticket classes various airlines offer. For example, Delta Air Lines provides classes such as Economy, Comfort+, and First Class, each with benefits and pricing options. Alaska Airlines offers Main Cabin, Premium Class, and First Class, catering to different traveler preferences and budgets.
  • Look out for airlines that offer special amenities to enhance your travel experience. For instance, United Airlines provides complimentary in-flight Wi-Fi, power outlets at each seat, and personal entertainment systems on select flights. American Airlines offers priority boarding for certain fare classes, allowing you to settle in and relax more quickly.
  • If you're concerned about reducing your carbon footprint, consider airlines that prioritize sustainability. For example, Alaska Airlines is committed to minimizing emissions by using sustainable aviation fuel and operating more fuel-efficient aircraft. Delta Air Lines has implemented carbon offset programs and investments in cleaner technologies to reduce its environmental impact.
  • When searching for cheap flights, be open to layovers, which can often result in significant savings. Airlines like Copa Airlines and Aeromexico frequently offer connecting flights between Seattle and Buenos Aires, providing more affordable options than non-stop flights. While layovers may extend your travel time, they can be an opportunity to explore an additional city or take a break during your journey.
  • Before booking your flight, review the baggage policies of each airline to avoid any surprises or extra charges. For example, Delta Air Lines allows one free carry-on bag and one personal item, while Alaska Airlines permits a similar policy with specific size and weight restrictions. It's important to note that additional fees may apply for checked bags or oversized items, so familiarize yourself with the baggage allowances of each airline to plan accordingly and minimize any additional costs.

Top 5 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.
8.0
DeltaOverall score based on 7963 reviews
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
8.2Boarding
Airline reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

4.0 OkayKoonj, Jun 2025MSP - AUS
Read more Delta reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Overall, aside from the baggage issue, it was as good as one expects.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

I want to single out flight attendant Mitch who was in the Premium Economy section. When my wife’s hearing aide dropped through the cushion under the seat he was able to locate it and return it to her. Food was a different matter. Dinner was fine. Breakfast was another matter. They had a yogurt dish that the ran out of and the alternative was not very good according to those we talked to.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

We didn’t have any entertainment. I tried to go online without success. The airplane was extremely cold and they didn’t have blankets.

It was good, however the airplane was really cold. We received snacks and the crew was friendly.

Delta has an outstanding service. They are courteous and punctual most of the time. The flight departed a half hour late but we arrived 15 minutes early.

Change of gate in Santiago devolved into half plus hour delay and a really tight connection in Lima

Although the flight is goof and the crew is good, the way the airline charges you for every service is ridiculous.

Plane never left the ground. Mech issues - entire trip was rerouted through united.

Everything was good except the check in. Could not do it online neither on the machines in the airport. Needed special assistance from the airline desk clerk

No entertainment but not expected. Unless you are referring to monitor that you can use. Then Al, was fine on all flights.

Friendly staff, It was the first flight out for our plane, so had to be deiced from the frost. Only delayed a few minutes,

Staff encountered friendly and helpful. Flight delayed 1 hour due to mechanical issue, but made it through Atlanta immkgration and security in plenty of time,

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

We were in transit from Lima (flight at 1.10am) and we were in stand by in our flight from Panama to Washington. We wait from 4.30 am to 18.30pm in the Airport. The company give us 2 x 15 dollars for eat during the day and a personnal travel voucher of 400 dollars each. Do they buy food one time something in the Airport ??? And one of us live in France so the voucher is not usable. More than 24 hours travel !! And our place were near the toilets, with 8 children around us. The boy behind my seat stamped his feet on my back all the flight. Really Wonder full ! So we are totally unhappy with our travel. Thanks Copa Airlines....

My flight delayed and i misss the connection they send me to orlando no to tampa i have to pay a uber to my house

It would have been better if they don't separate families in seating. We were seated in the aile row in the middle of a family of four. It would have been better if they they seat the family of four together than separated.

I upgraded myself to Business Class at the last minute so I had a DREAMS window seat. Seeing as I've never flown Business before everything was novel and fun for me and it made the 7 hour flight much more enjoyable for sure.

It was good, plane is a bit older so seats are somewhat flat

Well the airline was fine. The only thing is I was charged for a checked in luggage. But when I reserved the ticket it showed a check in bag allowed. Who can I get in contact with for reimbursement.? The airline said I had to speak to whoever I booked ticket with.

Friendly flight team and seamless travel from one stop to next.

At JFK the Security line was extremely long and few checkpoints open.

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Food was terrible, all served at once, poor quality . Wine and bread offered only once.

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

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