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Flights from Seattle to Buenos Aires

Find cheap airlines flights from Seattle to Buenos Aires

Choose from 2 carriers that fly from Seattle to Buenos Aires, including United Airlines, Delta Air Lines, Enjoy the cheapest tickets on this route with Delta Air Lines.
United Airlines logo United Airlines Delta Air Lines logo Delta Air Lines

Find flight deals from Seattle to Buenos Aires for the next 3 months. Book one way flights from $504 or round trip flights from $970.

      • SEA 10:55 PM
        29h 5m
        1 stop
        EZE 9:00 AM
        Seattle - Buenos Aires | Sun, Jan 11 | Delta Air Lines
        EZE 10:25 PM
        29h
        1 stop
        SEA 10:25 PM
        Buenos Aires - Seattle | Sun, Jan 18 | Delta Air Lines
        $970 $1,582
        39% OFF
        39% OFF
        $1,582 $970
      • SEA 11:00 PM
        27h 20m
        1 stop
        EZE 7:20 AM
        Seattle - Buenos Aires | Sat, Dec 13 | Delta Air Lines
        EZE 11:55 PM
        25h 55m
        1 stop
        SEA 8:50 PM
        Buenos Aires - Seattle | Wed, Dec 17 | Delta Air Lines
        $995 $1,582
        37% OFF
        37% OFF
        $1,582 $995
      • SEA 1:46 PM
        36h 34m
        1 stop
        EZE 7:20 AM
        Seattle - Buenos Aires | Sat, Dec 13 | United Airlines
        EZE 11:55 PM
        29h 39m
        1 stop
        SEA 12:34 AM
        Buenos Aires - Seattle | Thu, Dec 18 | United Airlines
        $1,022 $1,582
        35% OFF
        35% OFF
        $1,582 $1,022
      • SEA 3:42 PM
        36h 18m
        1 stop
        EZE 9:00 AM
        Seattle - Buenos Aires | Mon, Dec 1 | Delta Air Lines
        EZE 8:55 PM
        25h 52m
        1 stop
        SEA 5:47 PM
        Buenos Aires - Seattle | Sun, Dec 7 | Delta Air Lines
        $1,033
        35% OFF
        $1,582 $1,033
      • SEA 8:45 AM
        19h 50m
        1 stop
        EZE 9:35 AM
        Seattle - Buenos Aires | Sun, Dec 14 | Hawaiian Airlines
        EZE 11:00 AM
        29h 22m
        1 stop
        SEA 11:22 AM
        Buenos Aires - Seattle | Fri, Dec 19 | LATAM Airlines
        $1,149
        27% OFF
        $1,582 $1,149
      • SEA 8:45 AM
        19h 50m
        1 stop
        EZE 9:35 AM
        Seattle - Buenos Aires | Sun, Dec 14 | Alaska Airlines
        EZE 11:00 AM
        29h 22m
        1 stop
        SEA 11:22 AM
        Buenos Aires - Seattle | Fri, Dec 19 | LATAM Airlines
        $1,150
        27% OFF
        $1,582 $1,150
      • SEA 7:55 AM
        20h 40m
        1 stop
        EZE 9:35 AM
        Seattle - Buenos Aires | Sun, Dec 14 | Delta Air Lines
        EZE 11:00 AM
        38h 50m
        1 stop
        SEA 8:50 PM
        Buenos Aires - Seattle | Fri, Dec 19 | LATAM Airlines
        $1,151
        27% OFF
        $1,582 $1,151
      • SEA 7:55 AM
        20h 40m
        1 stop
        EZE 9:35 AM
        Seattle - Buenos Aires | Sat, Dec 13 | LATAM Airlines
        EZE 11:00 AM
        29h 22m
        1 stop
        SEA 11:22 AM
        Buenos Aires - Seattle | Thu, Dec 18 | LATAM Airlines
        $1,215
        23% OFF
        $1,582 $1,215
      • SEA 11:59 PM
        28h 21m
        1 stop
        EZE 9:20 AM
        Seattle - Buenos Aires | Sun, Dec 14 | United Airlines
        EZE 11:55 PM
        24h 59m
        1 stop
        SEA 7:54 PM
        Buenos Aires - Seattle | Fri, Dec 19 | United Airlines
        $1,291
        18% OFF
        $1,582 $1,291
      • SEA 11:59 PM
        26h 21m
        1 stop
        EZE 7:20 AM
        Seattle - Buenos Aires | Sun, Dec 7 | United Airlines
        EZE 11:55 PM
        24h 27m
        1 stop
        SEA 7:22 PM
        Buenos Aires - Seattle | Sat, Dec 13 | United Airlines
        $1,297
        18% OFF
        $1,582 $1,297
      • SEA 1:00 PM
        17h 25m
        1 stop
        BUE Invalid Date
        Seattle - Buenos Aires | Wed, Nov 19 | Normal Airline
        BUE 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Buenos Aires - Seattle | Fri, Nov 21 | Normal Airline
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Seattle to Buenos Aires

The distance between Seattle and Buenos Aires is about 11,117.39 km. The most popular month to Buenos Aires is July. The off-season for travel is October.

Cheapest one-way flight price$504
Cheapest round-trip ticket price$970
Off-season for travelOctober
Peak season for travelJuly
Flight distance11,117.39 km
Popular airlineUnited Airlines

When is the cheapest time to fly from Seattle to Buenos Aires?

The cheapest time for Seattle to Buenos Aires flights: Nov 30 to Dec 7 — one way flight prices from $356.

Cheapest flights
From price
Search
  • 1623
  • 2330

  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer flights from Seattle to Buenos Aires?

    At the moment, several airlines serve connecting flights from Seattle to Buenos Aires, including: United Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Buenos Aires is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • The cheapest months to fly from Seattle to Buenos Aires is October, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Seattle to Buenos Aires on November 21, 2025 with Air Canada, with prices starting at $563.
  • You can land at any one of the following hubs in Buenos Aires, with Seattle–Tacoma International Airport to Jorge Newbery Airport (SEA-AEP) is by far the most common option on this route: Ministro Pistarini International Airport (EZE) Jorge Newbery Airport (AEP).
  • The time difference between Buenos Aires and Seattle is 5h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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