SEA - BUE

$416 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 11/12. 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
$905
Typical prices: $1,263-$1,498
LATAM Airlines
Mon 1/19Mon 2/9
SEA - EZE • 2 stops
Cheapest one-way
$416
Multiple Airlines
Wed 11/12
SEA - AEP • 3 stops
Top airlines
LATAM Airlines
Cheapest • from $905 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 6% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Mon, Jan 19 - Mon, Feb 9
LATAM Airlines Logo
7:15 am - 9:15 amSEA-EZE
21h 00m2 stops
LATAM Airlines Logo
8:00 am - 11:23 pmEZE-SEA
20h 23m2 stops
$905LATAM Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
LATAM Airlines Logo
7:10 am - 9:15 amSEA-EZE
21h 05m2 stops
LATAM Airlines Logo
7:45 am - 10:54 pmEZE-SEA
20h 09m2 stops
$925LATAM Airlines
Find Deal
Mon, Feb 2 - Thu, Feb 12
Delta Logo
12:00 pm - 9:00 amSEA-EZE
16h 00m1 stop
Delta Logo
8:55 pm - 12:29 pmEZE-SEA
20h 34m1 stop
$957Delta
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Tue, Feb 17 - Sun, Feb 22
Delta Logo
6:00 am - 9:00 amSEA-EZE
22h 00m1 stop
Delta Logo
4:05 am - 10:12 pmEZE-SEA
23h 07m2 stops
$965Delta
Find Deal
Tue, Nov 11 - Mon, Nov 17
American Airlines Logo
12:41 am - 8:10 amSEA-EZE
26h 29m1 stop
American Airlines Logo
10:25 pm - 10:44 amEZE-SEA
17h 19m1 stop
$977American Airlines
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Thu, Feb 5 - Wed, Feb 11
United Airlines Logo
12:40 pm - 9:20 amSEA-EZE
15h 40m1 stop
United Airlines Logo
11:55 pm - 11:00 pmEZE-SEA
28h 05m1 stop
$978United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
American Airlines Logo
12:41 am - 8:10 amSEA-EZE
26h 29m1 stop
American Airlines Logo
11:59 pm - 3:31 pmEZE-SEA
20h 32m2 stops
$981American Airlines
Find Deal
Tue, Dec 2 - Sun, Dec 7
Multiple Airlines Logo
8:45 am - 9:35 amSEA-EZE
19h 50m1 stop
Multiple Airlines Logo
4:05 am - 11:41 pmEZE-SEA
24h 36m2 stops
$985Multiple Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
8:10 am - 3:50 pmSEA-EZE
26h 40m3 stops
Multiple Airlines Logo
11:20 am - 2:20 pmEZE-SEA
32h 00m3 stops
$1,011Multiple Airlines
Find Deal
Tue, Dec 2 - Fri, Dec 12
United Airlines Logo
7:10 am - 9:20 amSEA-EZE
21h 10m1 stop
United Airlines Logo
11:55 pm - 12:42 pmEZE-SEA
17h 47m1 stop
$1,015United Airlines
Find Deal
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.

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 May, where tickets cost $1,283 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,608 and $1,464 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, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$416
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 17% 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 $416 for a one-way ticket and $905 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?

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

  • 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 $1,426 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,198 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.

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 7993 reviews
8.2Boarding
8.5Crew
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

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.

Poor, the airline was not able to help me move flights.

we were missing our luggage, trying to find someone to have any empathy was pretty much not happening....

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

Really bad experience – delayed for 6 hours without any notice, no food or drinks provided, and stuck in the horrible Cartagena airport.

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.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

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

Information on your arrival and departure airports

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