$437+ Cheap flights from Seattle (SEA) to Buenos Aires (BUE)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
May 18 — May 251
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
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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 April 18, 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 April 18, 2026.
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:25 am
SEA
- EZE
1 stop20h 55m
LATAM Airlines
Mon 8/317:21 pm
EZE
- SEA
2 stops23h 22m
LATAM Airlines
Deal found 4/17![LATAM Airlines logo]()
$941
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/118:05 am
SEA
- EZE
1 stop21h 15m
LATAM Airlines
Mon 6/227:35 am
EZE
- SEA
2 stops20h 24m
LATAM Airlines
Deal found 4/17![LATAM Airlines logo]()
$947
This FlightHub deal was found by Cheapflights users on 4/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:25 am
SEA
- EZE
1 stop20h 55m
LATAM Airlines
Thu 9/247:21 pm
EZE
- SEA
2 stops21h 37m
LATAM Airlines
Deal found 4/16![LATAM Airlines logo]()
$965
This Delta deal was found by Cheapflights users on 4/17. 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.
Tue 10/208:25 am
SEA
- EZE
1 stop20h 55m
Delta
Mon 11/97:45 am
EZE
- SEA
2 stops21h 24m
Delta
Deal found 4/17![Delta logo]()
$967
This Delta deal was found by Cheapflights users on 4/17. 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 10/268:25 am
SEA
- AEP
2 stops27h 35m
Delta
Tue 11/108:05 pm
AEP
- SEA
2 stops29h 41m
Delta
Deal found 4/17![Delta logo]()
$967
This KAYAK deal was found by Cheapflights users on 4/17. 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 10/78:25 am
SEA
- EZE
2 stops29h 56m
LATAM Airlines
Tue 10/277:45 am
EZE
- SEA
3 stops30h 41m
LATAM Airlines
Deal found 4/17![LATAM Airlines logo]()
$970
This Delta deal was found by Cheapflights users on 4/17. 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 10/227:50 am
SEA
- EZE
2 stops21h 30m
Delta
Tue 11/104:45 pm
EZE
- SEA
2 stops25h 15m
Delta
Deal found 4/17![Delta logo]()
$971
This Justfly.com deal was found by Cheapflights users on 4/18. 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.
Sat 10/108:25 am
SEA
- EZE
1 stop20h 55m
LATAM Airlines
Fri 10/301:22 pm
EZE
- SEA
2 stops29h 25m
LATAM Airlines
Deal found 4/18![LATAM Airlines logo]()
$974
This FlightHub deal was found by Cheapflights users on 4/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:35 pm
SEA
- EZE
2 stops25h 30m
LATAM Airlines
Wed 11/111:22 pm
EZE
- SEA
2 stops28h 38m
LATAM Airlines
Deal found 4/18![LATAM Airlines logo]()
$977
This United Airlines deal was found by Cheapflights users on 4/17. 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 10/1111:59 pm
SEA
- EZE
1 stop28h 01m
United Airlines
Thu 10/229:00 pm
EZE
- SEA
1 stop19h 47m
United Airlines
Deal found 4/17![United Airlines logo]()
$980
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:42 am
SEA
- EZE
2 stops18h 33m
American Airlines
Wed 9/238:45 pm
EZE
- SEA
1 stop30h 17m
American Airlines
Deal found 4/15![American Airlines logo]()
$988
This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:18 pm
SEA
- AEP
2 stops31h 12m
Multiple Airlines
Mon 8/243:45 pm
AEP
- SEA
2 stops25h 13m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$993
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 April 18, 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 April 18, 2026.
This Delta deal was found by Cheapflights users on 4/17. 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 10/128:25 am
SEA
- EZE
1 stop20h 55m
Delta
Mon 10/263:55 am
EZE
- SEA
2 stops40h 38m
Delta
Deal found 4/17![Delta logo]()
$967
This United Airlines deal was found by Cheapflights users on 4/17. 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 6/245:00 pm
SEA
- EZE
1 stop35h 00m
United Airlines
Wed 7/19:00 pm
EZE
- SEA
2 stops22h 55m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,171
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 10/68:05 am
SEA
- EZE
1 stop31h 10m
Multiple Airlines
Tue 10/2011:00 am
EZE
- SEA
2 stops27h 32m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,245
This KAYAK deal was found by Cheapflights users on 4/14. 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 6/2410:05 am
SEA
- AEP
2 stops28h 20m
LATAM Airlines
Wed 7/19:00 pm
AEP
- SEA
2 stops29h 00m
LATAM Airlines
Deal found 4/14![LATAM Airlines logo]()
$1,289
This Delta deal was found by Cheapflights users on 4/17. 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.
Tue 10/68:25 am
SEA
- AEP
2 stops21h 15m
Delta
Tue 10/278:05 pm
AEP
- SEA
2 stops24h 28m
Delta
Deal found 4/17![Delta logo]()
$967
This Delta deal was found by Cheapflights users on 4/17. 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 10/108:25 am
SEA
- AEP
2 stops26h 25m
Delta
Sat 10/243:45 pm
AEP
- SEA
2 stops27h 02m
Delta
Deal found 4/17![Delta logo]()
$1,087
This oojo deal was found by Cheapflights users on 4/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:00 am
SEA
- AEP
2 stops22h 30m
Multiple Airlines
Tue 10/208:05 pm
AEP
- SEA
2 stops41h 28m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,257
This FlightHub deal was found by Cheapflights users on 4/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/53:55 pm
SEA
- EZE
2 stops37h 50m
LATAM Airlines
Wed 8/267:21 pm
EZE
- SEA
2 stops23h 22m
LATAM Airlines
Deal found 4/13![LATAM Airlines logo]()
$1,301
This deal was found by Cheapflights users on 4/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1112:04 pm
SEA
- EZE
1 stop15h 56m
United Airlines
Sun 6/219:00 pm
EZE
- SEA
1 stop17h 47m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,347
This oojo deal was found by Cheapflights users on 4/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:03 am
SEA
- AEP
2 stops22h 27m
Multiple Airlines
Mon 7/68:40 am
AEP
- SEA
2 stops32h 08m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,288
This Expedia deal was found by Cheapflights users on 4/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 am
SEA
- AEP
2 stops31h 40m
LATAM Airlines
Wed 8/265:35 pm
AEP
- SEA
2 stops23h 23m
LATAM Airlines
Deal found 4/13![LATAM Airlines logo]()
$1,328
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 10/99:25 pm
SEA
- AEP
2 stops30h 15m
Delta
Tue 10/278:05 pm
AEP
- SEA
2 stops22h 42m
Delta
Deal found 4/17![Delta logo]()
$1,223
This United Airlines deal was found by Cheapflights users on 4/13. 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 6/45:00 am
SEA
- EZE
2 stops23h 00m
United Airlines
Mon 6/89:00 pm
EZE
- SEA
2 stops21h 30m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,357
This oojo deal was found by Cheapflights users on 4/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:54 pm
SEA
- AEP
2 stops22h 36m
Multiple Airlines
Mon 8/318:05 pm
AEP
- SEA
2 stops41h 20m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,304
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:25 am
SEA
- EZE
1 stop20h 55m
LATAM Airlines
Sat 9/127:21 pm
EZE
- SEA
2 stops21h 37m
LATAM Airlines
Deal found 4/17![LATAM Airlines logo]()
$1,339
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 10/99:25 pm
SEA
- AEP
2 stops30h 15m
Delta
Wed 10/288:05 pm
AEP
- SEA
2 stops30h 06m
Delta
Deal found 4/17![Delta logo]()
$1,223
This oojo deal was found by Cheapflights users on 4/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:07 pm
SEA
- AEP
2 stops30h 33m
Multiple Airlines
Sat 9/1210:30 pm
AEP
- SEA
2 stops43h 09m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,372
This Delta deal was found by Cheapflights users on 4/17. 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 10/88:25 am
SEA
- EZE
1 stop20h 55m
Delta
Sat 10/248:10 pm
EZE
- SEA
1 stop18h 16m
Delta
Deal found 4/17![Delta logo]()
$1,272
This KAYAK deal was found by Cheapflights users on 4/13. 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.
Sun 9/69:30 am
SEA
- AEP
2 stops30h 10m
LATAM Airlines
Sat 9/128:05 pm
AEP
- SEA
2 stops29h 54m
LATAM Airlines
Deal found 4/13![LATAM Airlines logo]()
$1,419
This oojo deal was found by Cheapflights users on 4/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:00 am
SEA
- AEP
2 stops29h 00m
Multiple Airlines
Sun 6/78:40 am
AEP
- SEA
2 stops32h 16m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,454
This Delta deal was found by Cheapflights users on 4/15. 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.
Sun 9/65:30 pm
SEA
- EZE
1 stop36h 15m
Delta
Sat 9/268:10 pm
EZE
- SEA
1 stop17h 55m
Delta
Deal found 4/15![Delta logo]()
$1,365
Last-minute flights from Seattle to Buenos AiresDiscover last-minute flight deals from Seattle to Buenos Aires. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Buenos Aires. Data last updated April 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 4/274:20 pm
SEA
- EZE
2 stops37h 00m
Multiple Airlines
Mon 5/111:10 pm
EZE
- SEA
1 stop36h 37m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,273
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:00 pm
SEA
- EZE
3 stops26h 40m
Multiple Airlines
Fri 5/87:10 am
EZE
- SEA
3 stops35h 29m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,288
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/311:00 pm
SEA
- EZE
2 stops25h 30m
Multiple Airlines
Tue 5/121:10 pm
EZE
- SEA
1 stop36h 39m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,160
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:00 pm
SEA
- EZE
3 stops26h 40m
Multiple Airlines
Fri 6/199:15 pm
EZE
- SEA
2 stops27h 52m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,239
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:00 pm
SEA
- AEP
3 stops28h 40m
Multiple Airlines
Fri 6/1911:15 am
AEP
- SEA
3 stops37h 52m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,481
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Wed 5/137:55 am
SEA
- EZE
1 stop21h 25m
Multiple Airlines
Tue 5/191:10 pm
EZE
- SEA
2 stops48h 56m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,245
This oojo deal was found by Cheapflights users on 4/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:28 pm
SEA
- AEP
2 stops22h 02m
Multiple Airlines
Tue 5/195:35 pm
AEP
- SEA
2 stops43h 22m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,421
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/187:55 am
SEA
- EZE
1 stop21h 25m
Multiple Airlines
Sun 5/311:10 pm
EZE
- SEA
2 stops48h 56m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,241
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/1911:06 am
SEA
- EZE
2 stops35h 39m
Multiple Airlines
Wed 5/271:10 pm
EZE
- SEA
1 stop36h 39m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,147
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/305:50 am
SEA
- EZE
3 stops35h 35m
Multiple Airlines
Fri 6/53:48 am
EZE
- SEA
3 stops34h 20m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,267
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3111:00 pm
SEA
- EZE
3 stops31h 00m
Multiple Airlines
Sat 6/61:35 am
EZE
- SEA
3 stops34h 30m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,282
This oojo deal was found by Cheapflights users on 4/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:00 am
SEA
- AEP
2 stops29h 00m
Multiple Airlines
Sun 6/78:40 am
AEP
- SEA
2 stops32h 16m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,454
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 April 18, 2026.
Search for one-way flight options from Seattle to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 9/18:13 pm
SEA
- EZE
3 stops33h 47m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 9/18:13 pm
SEA
- AEP
3 stops32h 17m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$459
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/211:00 pm
SEA
- AEP
3 stops49h 20m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/211:00 pm
SEA
- EZE
3 stops47h 45m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$487
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 10/126:00 am
SEA
- EZE
2 stops41h 00m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$490
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:00 pm
SEA
- EZE
3 stops30h 16m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 10/126:00 am
SEA
- AEP
3 stops45h 50m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$516
This Mytrip deal was found by Cheapflights users on 4/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:00 pm
SEA
- AEP
3 stops26h 40m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/17:12 pm
SEA
- EZE
3 stops25h 38m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$599
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/117:55 am
SEA
- EZE
1 stop31h 20m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$624
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Thu 10/84:20 pm
SEA
- AEP
3 stops42h 30m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$628
This Orbitz deal was found by Cheapflights users on 4/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/119:41 pm
SEA
- AEP
2 stops27h 59m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$644
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 April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $941 (FlightHub) |
One-way from | $437 (Kiwi.com) |
Popular in | May |
Cheapest in | March |
Average price | $1,327 |
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 2,558,603 searches. Data last updated April 18, 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 - EZE
SEAEZE
Seattle/Tacoma Intl
Mon 10/12
8:25 am-9:20 am
1 stop20h 55m
Buenos Aires Ministro Pistarini
Mon 10/26
3:55 am-4:33 pm
2 stops40h 38m
$967
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Tue 10/6
8:25 am-9:40 am
2 stops21h 15m
Buenos Aires Jorge Newbery
Tue 10/27
8:05 pm-4:33 pm
2 stops24h 28m
$967
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Sat 10/10
8:25 am-2:50 pm
2 stops26h 25m
Buenos Aires Jorge Newbery
Sat 10/24
3:45 pm-2:47 pm
2 stops27h 02m
$1,087
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Wed 6/24
5:00 pm-8:00 am
1 stop35h 00m
Buenos Aires Ministro Pistarini
Wed 7/1
9:00 pm-3:55 pm
2 stops22h 55m
$1,171
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Fri 10/9
9:25 pm-7:40 am
2 stops30h 15m
Buenos Aires Jorge Newbery
Tue 10/27
8:05 pm-2:47 pm
2 stops22h 42m
$1,223
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Fri 10/9
9:25 pm-7:40 am
2 stops30h 15m
Buenos Aires Jorge Newbery
Wed 10/28
8:05 pm-10:11 pm
2 stops30h 06m
$1,223
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Tue 10/6
8:05 am-7:15 pm
1 stop31h 10m
Buenos Aires Ministro Pistarini
Tue 10/20
11:00 am-10:32 am
2 stops27h 32m
$1,245
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Tue 10/6
6:00 am-8:30 am
2 stops22h 30m
Buenos Aires Jorge Newbery
Tue 10/20
8:05 pm-9:33 am
2 stops41h 28m
$1,257
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Thu 10/8
8:25 am-9:20 am
1 stop20h 55m
Buenos Aires Ministro Pistarini
Sat 10/24
8:10 pm-10:26 am
1 stop18h 16m
$1,272
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Sun 6/28
6:03 am-8:30 am
2 stops22h 27m
Buenos Aires Jorge Newbery
Mon 7/6
8:40 am-12:48 pm
2 stops32h 08m
$1,288
Showing 1-10 of 34 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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-EZE
SEA-AEP
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-EZE
SEA-AEP
How far ahead should I book a flight from Seattle to Buenos Aires?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Buenos Aires. Price data was last updated on April 10, 2026.
Booking 25 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.
What is the cheapest month to book a flight from Seattle to Buenos Aires?
Currently, August is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of $157). Flying from Seattle to Buenos Aires in May is currently the most expensive (average of $1,312). 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?
How often are flights from Seattle to Buenos Aires delayed?
About 100% of weekly flights between Seattle and Buenos Aires have experienced delays in the past year, with the average delay time being 99 minutes.
What is the most punctual flight time for Seattle to Buenos Aires flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
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 April 18, 2026.
Read reviews from past customers who have flown Delta,LATAM Airlines, andUnited 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
Overall
7.9
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Buenos Aires flight routes
Complete your trip
Flights by cabin class
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Other flights from Seattle
Popular flights
Alternative routes for Seattle to Buenos Aires
See prices for flight routes from nearby airports that may be better suited for you.
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 April 18, 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 April 18, 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 April 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seattle to Buenos Aires
Discover the top 4 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 2,558,603 searches. Data last updated April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$337 | Average$1,350 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$696 | Average$1,225 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$964 | Average$1,366 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,075 | Average$1,315 | FlexibilityNo cancel fee | On-time71% |