$444+ Cheap flights from Seattle (SEA) to Buenos Aires (BUE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
Nov 23 — Nov 301
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Buenos Aires with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Buenos Aires
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Cheapest flights from Seattle to Buenos AiresExplore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
Explore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:08 am -
2 stops41h 27m
Tue 11/2412:20 pm -
1 stop28h 03m
Deal found 10/20![Multiple Airlines logo]()
$1,163
This Justfly.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:10 am -
1 stop20h 40m
Tue 12/18:05 pm -
2 stops21h 34m
Deal found 10/22![LATAM Airlines logo]()
$1,192
This LATAM Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:10 am -
1 stop20h 40m
Tue 12/88:05 pm -
1 stop23h 29m
Deal found 10/23![LATAM Airlines logo]()
$1,214
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:24 am -
1 stop29h 51m
Tue 12/1511:00 am -
2 stops28h 26m
Deal found 10/24![Multiple Airlines logo]()
$1,223
This Flysmarter deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:05 am -
1 stop19h 15m
Mon 12/710:05 pm -
2 stops20h 44m
Deal found 10/21![Lufthansa logo]()
$1,224
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:24 am -
1 stop20h 26m
Sat 12/1212:05 am -
2 stops39h 05m
Deal found 10/22![Multiple Airlines logo]()
$1,228
This KAYAK deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:35 pm -
2 stops30h 45m
Tue 11/1711:55 pm -
1 stop18h 30m
Deal found 10/22![Multiple Airlines logo]()
$1,231
This Ovago deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:30 am -
2 stops17h 50m
Tue 12/810:05 pm -
2 stops20h 44m
Deal found 10/20![Multiple Airlines logo]()
$1,232
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:05 am -
2 stops21h 15m
Wed 12/1611:55 pm -
2 stops21h 37m
Deal found 10/23![United Airlines logo]()
$1,233
This BusinessClass deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:56 pm -
2 stops27h 24m
Tue 11/1710:05 pm -
2 stops20h 49m
Deal found 10/22![Avianca logo]()
$1,234
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:45 am -
1 stop18h 10m
Tue 11/249:30 pm -
1 stop17h 35m
Deal found 10/20![LATAM Airlines logo]()
$1,235
This Rumbo deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:10 am -
1 stop20h 40m
Mon 12/148:05 pm -
1 stop23h 29m
Deal found 10/23![LATAM Airlines logo]()
$1,240
Best flights from Seattle to Buenos AiresDiscover carefully curated flight deals from Seattle to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
Discover carefully curated flight deals from Seattle to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:25 am -
1 stop20h 15m
Mon 12/711:35 pm -
1 stop26h 15m
Deal found 10/20![Delta logo]()
$1,242
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:30 am -
2 stops17h 50m
Mon 11/3011:55 pm -
2 stops23h 29m
Deal found 10/22![United Airlines logo]()
$1,246
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:35 pm -
2 stops27h 55m
Mon 12/76:20 pm -
2 stops25h 14m
Deal found 10/20![LATAM Airlines logo]()
$1,262
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/105:05 am -
2 stops21h 15m
Tue 12/2210:05 pm -
2 stops28h 20m
Deal found 10/24![United Airlines logo]()
$1,246
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/69:20 pm -
2 stops29h 20m
Wed 1/205:35 pm -
2 stops26h 02m
Deal found 10/20![LATAM Airlines logo]()
$1,262
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/117:15 am -
1 stop22h 40m
Wed 2/1711:35 pm -
1 stop20h 15m
Deal found 10/23![Delta logo]()
$1,370
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:05 am -
2 stops21h 15m
Tue 12/111:55 pm -
2 stops25h 52m
Deal found 10/19![United Airlines logo]()
$1,246
This LATAM Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/222:00 pm -
2 stops23h 00m
Thu 4/85:35 pm -
2 stops22h 48m
Deal found 10/22![LATAM Airlines logo]()
$1,370
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/148:30 am -
2 stops17h 50m
Thu 1/2810:05 pm -
2 stops23h 13m
Deal found 10/21![United Airlines logo]()
$1,246
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/202:30 pm -
2 stops21h 30m
Sun 3/288:05 pm -
2 stops20h 55m
Deal found 10/23![Delta logo]()
$1,400
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/46:34 am -
2 stops19h 46m
Thu 1/2111:55 pm -
2 stops23h 17m
Deal found 10/19![United Airlines logo]()
$1,246
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/59:30 am -
2 stops24h 10m
Mon 2/155:35 pm -
2 stops30h 24m
Deal found 10/21![LATAM Airlines logo]()
$1,412
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/139:20 pm -
2 stops37h 40m
Thu 2/188:05 pm -
2 stops21h 18m
Deal found 10/23![Delta logo]()
$1,421
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:56 pm -
2 stops27h 24m
Wed 11/2510:05 pm -
2 stops20h 49m
Deal found 10/21![United Airlines logo]()
$1,246
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/209:30 am -
2 stops25h 10m
Sun 3/289:45 pm -
2 stops28h 13m
Deal found 10/20![LATAM Airlines logo]()
$1,412
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/139:20 pm -
2 stops37h 40m
Tue 2/168:05 pm -
2 stops21h 18m
Deal found 10/23![Delta logo]()
$1,421
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:05 am -
2 stops23h 15m
Mon 11/3011:55 pm -
2 stops23h 29m
Deal found 10/20![United Airlines logo]()
$1,246
This Justfly.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/88:40 am -
2 stops21h 00m
Sat 4/178:05 pm -
2 stops20h 55m
Deal found 10/21![LATAM Airlines logo]()
$1,465
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/76:00 am -
2 stops20h 40m
Sat 1/305:35 pm -
2 stops24h 03m
Deal found 10/24![Delta logo]()
$1,528
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/102:20 pm -
1 stop38h 00m
Thu 1/1411:55 pm -
2 stops41h 03m
Deal found 10/20![United Airlines logo]()
$1,263
This LATAM Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/266:00 am -
2 stops21h 40m
Sun 4/115:35 pm -
2 stops25h 12m
Deal found 10/22![LATAM Airlines logo]()
$1,528
Last-minute flights from Seattle to Buenos AiresDiscover last-minute flight deals from Seattle to Buenos Aires. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Buenos Aires. Data last updated October 24, 2026 and is based on user searches.
This LATAM Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:05 am -
2 stops29h 30m
Tue 11/249:30 pm -
1 stop17h 35m
Deal found 10/22![LATAM Airlines logo]()
$1,370
This KAYAK deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:35 pm -
2 stops30h 45m
Tue 11/1711:55 pm -
1 stop18h 30m
Deal found 10/22![Multiple Airlines logo]()
$1,231
This BusinessClass deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:56 pm -
2 stops27h 24m
Tue 11/1710:05 pm -
2 stops20h 49m
Deal found 10/22![Avianca logo]()
$1,234
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:56 pm -
2 stops27h 24m
Wed 11/2510:05 pm -
2 stops20h 49m
Deal found 10/21![United Airlines logo]()
$1,246
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:08 am -
2 stops41h 27m
Tue 11/2412:20 pm -
1 stop28h 03m
Deal found 10/20![Multiple Airlines logo]()
$1,163
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:45 am -
1 stop18h 10m
Tue 11/249:30 pm -
1 stop17h 35m
Deal found 10/20![LATAM Airlines logo]()
$1,235
This LATAM Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:45 am -
2 stops23h 15m
Tue 11/245:35 pm -
2 stops24h 05m
Deal found 10/20![LATAM Airlines logo]()
$1,242
This Flysmarter deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:59 pm -
1 stop26h 21m
Mon 12/710:05 pm -
1 stop20h 17m
Deal found 10/21![Lufthansa logo]()
$1,224
This Vliegwinkel deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:13 am -
2 stops29h 22m
Sun 12/64:00 am -
3 stops23h 43m
Deal found 10/21![Multiple Airlines logo]()
$1,261
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:35 pm -
2 stops27h 55m
Mon 11/305:35 pm -
2 stops24h 04m
Deal found 10/20![LATAM Airlines logo]()
$1,262
This Justfly.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:10 am -
1 stop20h 40m
Tue 12/18:05 pm -
2 stops21h 34m
Deal found 10/22![LATAM Airlines logo]()
$1,192
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:05 am -
1 stop21h 15m
Thu 12/311:55 pm -
1 stop24h 37m
Deal found 10/20![United Airlines logo]()
$1,242
One-way flights from Seattle to Buenos AiresSearch for one-way flight options from Seattle to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
Search for one-way flight options from Seattle to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:58 pm -
3 stops54h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
3 stops42h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:53 pm -
3 stops49h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:53 pm -
3 stops52h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/89:05 am -
2 stops41h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/59:05 am -
2 stops41h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:08 am -
2 stops41h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$495
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:08 am -
2 stops41h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:27 pm -
2 stops45h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:21 pm -
2 stops21h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$518
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:24 am -
2 stops42h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:27 pm -
3 stops45h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$530
Find flight deals from Seattle to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,102 (Trip.com) |
One-way from | $444 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $1,356 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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, Cheapflights users made 7,457,451 searches. Data last updated October 24, 2026.
Use the filters below to find and compare flights from Seattle to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery
SEAAEP
Seattle/Tacoma Intl
Fri 3/19
7:45 am-3:30 pm
2 stops27h 45m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$561
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini
SEAEZE
Seattle/Tacoma Intl
Tue 1/26
8:00 am-9:40 am
2 stops20h 40m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$564
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery
SEAAEP
Seattle/Tacoma Intl
Mon 3/1
6:33 pm-6:30 pm
3 stops42h 57m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$565
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery
SEAAEP
Seattle/Tacoma Intl
Mon 1/25
8:13 am-7:30 am
2 stops42h 17m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$583
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini
SEAEZE
Seattle/Tacoma Intl
Mon 3/1
8:05 am-9:41 pm
2 stops32h 36m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$595
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery
SEAAEP
Seattle/Tacoma Intl
Tue 1/26
8:13 am-9:30 pm
3 stops32h 17m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$600
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery
SEAAEP
Seattle/Tacoma Intl
Wed 11/18
7:48 pm-6:00 pm
3 stops41h 12m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$620
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini
SEAEZE
Seattle/Tacoma Intl
Fri 3/19
8:40 am-6:20 pm
3 stops29h 40m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$664
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini
SEAEZE
Seattle/Tacoma Intl
Sat 2/6
9:30 am-9:50 pm
1 stop31h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$670
SeattleBuenos Aires
SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery
SEAAEP
Seattle/Tacoma Intl
Sat 2/6
10:40 pm-6:30 pm
3 stops38h 50m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$714
Showing 1-10 of 42 resultsSorted by cheapest first
Compare providers for flights from Seattle to Buenos Aires
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Buenos Aires in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Seattle with our price prediction graph.
SEA-BUE
SEA-AEP
SEA-EZE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Buenos Aires
SEA-BUE
SEA-AEP
SEA-EZE
What is the cheapest month to book a flight from Seattle to Buenos Aires?
Currently, March is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of $1,214). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of $1,912). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Buenos Aires?
Airfare is typical for this route at the moment.
Seattle to Buenos Aires flights typically cost between $1,046 and $1,568 in February.The cheapest round-trip price found within the last 5 days was $1,102 on Multiple Airlines (Feb 20-Mar 1).
How far ahead should I book a flight from Seattle to Buenos Aires?
Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated October 24, 2026.
Read reviews from past customers who have flown Delta,Aeromexico, andLATAM Airlines from Seattle to Buenos Aires. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Other flights to Buenos Aires
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Complete your trip
Complete your trip to Buenos Aires by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Buenos Aires by cabin class
Find flights from Seattle to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Buenos Aires flights
Browse other Seattle and Buenos Aires flight options. Last updated on October 24, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Seattle to Buenos Aires
Discover the top 3 airlines that operate flights from Seattle to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$159 | Average$1,534 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$946 | Average$1,447 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,126 | Average$1,592 | FlexibilityNo cancel fee | On-time71% |