$392+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA ā BUE
Aug 28 ā Sep 41
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 āFind dealsā2. 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 providerās pricing and select the best option for you! Book through your favorite providerās website for a seamless experience.Cheap flight deals from Seattle to Buenos Aires
Cheapest
Best
Last-minute
One-way
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 July 29, 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 July 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 8/2510:34 am
SEA
- EZE
2 stops41h 06m
Multiple Airlines
Tue 9/228:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,031
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/176:34 pm
SEA
- EZE
3 stops30h 26m
Multiple Airlines
Thu 10/227:45 am
EZE
- SEA
3 stops34h 37m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,044
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/610:34 am
SEA
- EZE
2 stops41h 23m
Multiple Airlines
Mon 9/148:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,078
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/178:15 pm
SEA
- EZE
2 stops35h 15m
Multiple Airlines
Sun 9/273:15 pm
EZE
- SEA
1 stop34h 39m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,080
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/88:08 am
SEA
- EZE
2 stops39h 15m
Multiple Airlines
Wed 10/288:00 am
EZE
- SEA
1 stop17h 59m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,083
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/65:51 pm
SEA
- EZE
2 stops26h 14m
Multiple Airlines
Wed 9/168:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,087
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/65:51 pm
SEA
- EZE
2 stops26h 14m
Multiple Airlines
Sun 9/203:15 pm
EZE
- SEA
1 stop34h 39m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,088
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/810:34 am
SEA
- EZE
2 stops36h 11m
Multiple Airlines
Wed 9/231:10 pm
EZE
- SEA
1 stop36h 44m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,092
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/2610:34 am
SEA
- EZE
2 stops43h 06m
Multiple Airlines
Wed 9/28:00 am
EZE
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,093
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/65:51 pm
SEA
- EZE
2 stops26h 14m
Multiple Airlines
Tue 9/158:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,097
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/38:13 am
SEA
- EZE
2 stops42h 32m
Multiple Airlines
Mon 9/148:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,101
This Trip.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 8/289:30 am
SEA
- EZE
1 stop31h 55m
Aeromexico
Thu 9/1011:25 pm
EZE
- SEA
1 stop24h 30m
Aeromexico
Deal found 7/27![Aeromexico logo]()
$1,102
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 July 29, 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 July 29, 2026.
This Copa Airlines deal was found by Cheapflights users on 7/29. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Copa Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/225:20 pm
SEA
- EZE
2 stops25h 06m
Copa Airlines
Tue 10/62:49 pm
EZE
- SEA
2 stops36h 37m
Copa Airlines
Deal found 7/29![Copa Airlines logo]()
$1,174
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/43:29 pm
SEA
- AEP
2 stops33h 11m
Multiple Airlines
Wed 11/187:00 am
AEP
- SEA
2 stops43h 45m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,370
This Delta deal was found by Cheapflights users on 7/26. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 12/108:10 am
SEA
- EZE
1 stop20h 30m
Delta
Tue 12/227:20 am
EZE
- SEA
2 stops21h 51m
Delta
Deal found 7/26![Delta logo]()
$1,378
This KAYAK deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure KAYAK is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 1/146:00 am
SEA
- AEP
2 stops29h 00m
LATAM Airlines
Thu 1/283:50 pm
AEP
- SEA
2 stops27h 57m
LATAM Airlines
Deal found 7/27![LATAM Airlines logo]()
$1,378
This Copa Airlines deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Copa Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/44:39 pm
SEA
- EZE
2 stops27h 32m
Copa Airlines
Tue 11/248:56 am
EZE
- SEA
2 stops31h 18m
Copa Airlines
Deal found 7/28![Copa Airlines logo]()
$1,264
This Copa Airlines deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Copa Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/43:35 pm
SEA
- EZE
2 stops24h 58m
Copa Airlines
Wed 11/185:16 am
EZE
- SEA
2 stops35h 00m
Copa Airlines
Deal found 7/28![Copa Airlines logo]()
$1,264
This Delta deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/49:55 am
SEA
- AEP
2 stops25h 05m
Delta
Wed 11/188:05 pm
AEP
- SEA
2 stops21h 55m
Delta
Deal found 7/24![Delta logo]()
$1,398
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 12/17:05 pm
SEA
- AEP
3 stops29h 35m
Multiple Airlines
Wed 12/163:55 pm
AEP
- SEA
3 stops27h 42m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,398
This KAYAK deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure KAYAK is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/226:00 am
SEA
- AEP
2 stops21h 40m
LATAM Airlines
Wed 10/285:35 pm
AEP
- SEA
2 stops29h 29m
LATAM Airlines
Deal found 7/28![LATAM Airlines logo]()
$1,458
This Copa Airlines deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Copa Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/314:39 pm
SEA
- EZE
2 stops28h 32m
Copa Airlines
Wed 11/115:16 am
EZE
- SEA
2 stops35h 00m
Copa Airlines
Deal found 7/27![Copa Airlines logo]()
$1,269
This Delta deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 11/39:55 pm
SEA
- AEP
2 stops28h 45m
Delta
Tue 11/248:05 pm
AEP
- SEA
2 stops21h 55m
Delta
Deal found 7/24![Delta logo]()
$1,398
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/265:50 am
SEA
- AEP
3 stops32h 40m
Multiple Airlines
Wed 9/25:10 am
AEP
- SEA
3 stops41h 35m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,421
This Delta deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/49:35 pm
SEA
- AEP
2 stops29h 05m
Delta
Sun 11/228:05 pm
AEP
- SEA
2 stops21h 55m
Delta
Deal found 7/24![Delta logo]()
$1,398
This KAYAK deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure KAYAK is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 12/108:25 am
SEA
- AEP
2 stops20h 15m
LATAM Airlines
Tue 12/223:50 pm
AEP
- SEA
2 stops23h 36m
LATAM Airlines
Deal found 7/28![LATAM Airlines logo]()
$1,552
This Copa Airlines deal was found by Cheapflights users on 7/25. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Copa Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 8/285:20 pm
SEA
- EZE
2 stops29h 10m
Copa Airlines
Thu 9/108:59 am
EZE
- SEA
2 stops38h 33m
Copa Airlines
Deal found 7/25![Copa Airlines logo]()
$1,341
This Delta deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 11/62:30 pm
SEA
- AEP
2 stops36h 10m
Delta
Sun 11/228:05 pm
AEP
- SEA
2 stops21h 55m
Delta
Deal found 7/24![Delta logo]()
$1,448
This Copa Airlines deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Copa Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/193:30 pm
SEA
- EZE
2 stops29h 21m
Copa Airlines
Sun 8/2312:10 am
EZE
- SEA
2 stops25h 41m
Copa Airlines
Deal found 7/27![Copa Airlines logo]()
$1,360
This Delta deal was found by Cheapflights users on 7/25. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/3112:30 pm
SEA
- AEP
2 stops23h 30m
Delta
Wed 11/118:05 pm
AEP
- SEA
2 stops24h 12m
Delta
Deal found 7/25![Delta logo]()
$1,448
This Delta deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 11/39:35 pm
SEA
- AEP
2 stops29h 05m
Delta
Fri 11/205:35 pm
AEP
- SEA
2 stops28h 24m
Delta
Deal found 7/24![Delta logo]()
$1,448
Last-minute flights from Seattle to Buenos AiresDiscover last-minute flight deals from Seattle to Buenos Aires. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Buenos Aires. Data last updated July 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/1710:34 am
SEA
- EZE
2 stops43h 06m
Multiple Airlines
Thu 8/278:00 am
EZE
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,171
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 8/2510:34 am
SEA
- EZE
2 stops41h 06m
Multiple Airlines
Tue 9/228:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,031
This oojo deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure oojo is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 8/259:30 am
SEA
- EZE
1 stop31h 55m
Aeromexico
Tue 9/2211:25 pm
EZE
- SEA
1 stop24h 30m
Aeromexico
Deal found 7/28![Aeromexico logo]()
$1,134
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/2610:34 am
SEA
- EZE
2 stops43h 06m
Multiple Airlines
Wed 9/28:00 am
EZE
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$1,093
This LATAM Airlines deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure LATAM Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/2611:59 pm
SEA
- EZE
2 stops29h 41m
LATAM Airlines
Wed 9/24:45 pm
EZE
- SEA
2 stops23h 42m
LATAM Airlines
Deal found 7/28![LATAM Airlines logo]()
$1,124
This LATAM Airlines deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure LATAM Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/262:50 pm
SEA
- AEP
2 stops21h 20m
LATAM Airlines
Wed 9/26:20 pm
AEP
- SEA
2 stops24h 30m
LATAM Airlines
Deal found 7/28![LATAM Airlines logo]()
$1,200
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/2710:34 am
SEA
- EZE
2 stops43h 06m
Multiple Airlines
Thu 9/311:25 pm
EZE
- SEA
1 stop24h 30m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$1,148
This Trip.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 8/289:30 am
SEA
- EZE
1 stop31h 55m
Aeromexico
Thu 9/1011:25 pm
EZE
- SEA
1 stop24h 30m
Aeromexico
Deal found 7/27![Aeromexico logo]()
$1,102
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 8/288:13 am
SEA
- EZE
2 stops39h 57m
Multiple Airlines
Thu 9/101:10 pm
EZE
- SEA
1 stop36h 44m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,131
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/318:13 am
SEA
- EZE
2 stops38h 47m
Multiple Airlines
Wed 9/168:00 am
EZE
- SEA
1 stop17h 54m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,121
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/318:13 am
SEA
- EZE
1 stop21h 27m
Multiple Airlines
Fri 9/184:45 am
EZE
- SEA
2 stops21h 09m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,166
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/318:13 am
SEA
- EZE
1 stop21h 27m
Multiple Airlines
Tue 9/152:49 pm
EZE
- SEA
2 stops22h 48m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,178
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 July 29, 2026.
Search for one-way flight options from Seattle to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 11/511:06 am
SEA
- EZE
2 stops34h 54m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 10/1911:06 am
SEA
- EZE
3 stops35h 54m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/810:34 am
SEA
- EZE
2 stops36h 11m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/138:15 pm
SEA
- EZE
2 stops42h 06m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/288:15 pm
SEA
- EZE
2 stops31h 42m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/248:00 am
SEA
- EZE
2 stops39h 23m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 10/24:27 pm
SEA
- EZE
3 stops56h 33m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 11/211:06 am
SEA
- AEP
3 stops50h 34m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 11/211:06 am
SEA
- EZE
3 stops41h 12m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/138:15 pm
SEA
- AEP
2 stops38h 35m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 11/311:06 am
SEA
- AEP
2 stops40h 24m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/228:15 pm
SEA
- EZE
3 stops33h 25m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$425
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 July 29, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,031 (Kiwi.com) |
One-way from | $392 (Kiwi.com) |
Popular in | May |
Cheapest in | November |
Average price | $1,328 |
Cheapflights Fare Finder
Ā
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 July 29, 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
Tue 9/22
5:20 pm-10:26 pm
2 stops25h 06m
Buenos Aires Ministro Pistarini
Tue 10/6
2:49 pm-11:26 pm
2 stops36h 37m
$1,174
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Wed 11/4
4:39 pm-1:11 am
2 stops27h 32m
Buenos Aires Ministro Pistarini
Tue 11/24
8:56 am-11:14 am
2 stops31h 18m
$1,264
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Wed 11/4
3:35 pm-9:33 pm
2 stops24h 58m
Buenos Aires Ministro Pistarini
Wed 11/18
5:16 am-11:16 am
2 stops35h 00m
$1,264
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Sat 10/31
4:39 pm-1:11 am
2 stops28h 32m
Buenos Aires Ministro Pistarini
Wed 11/11
5:16 am-11:16 am
2 stops35h 00m
$1,269
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Fri 8/28
5:20 pm-2:30 am
2 stops29h 10m
Buenos Aires Ministro Pistarini
Thu 9/10
8:59 am-7:32 pm
2 stops38h 33m
$1,341
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Wed 8/19
3:30 pm-12:51 am
2 stops29h 21m
Buenos Aires Ministro Pistarini
Sun 8/23
12:10 am-9:51 pm
2 stops25h 41m
$1,360
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Wed 11/4
3:29 pm-5:40 am
2 stops33h 11m
Buenos Aires Jorge Newbery
Wed 11/18
7:00 am-9:45 pm
2 stops43h 45m
$1,370
Quickest round-trip
SeattleBuenos Aires
SEA - EZE
SEAEZE
Seattle/Tacoma Intl
Thu 12/10
8:10 am-9:40 am
1 stop20h 30m
Buenos Aires Ministro Pistarini
Tue 12/22
7:20 am-12:11 am
2 stops21h 51m
$1,378
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Thu 1/14
6:00 am-4:00 pm
2 stops29h 00m
Buenos Aires Jorge Newbery
Thu 1/28
3:50 pm-2:47 pm
2 stops27h 57m
$1,378
SeattleBuenos Aires
SEA - AEP
SEAAEP
Seattle/Tacoma Intl
Wed 11/4
9:55 am-4:00 pm
2 stops25h 05m
Buenos Aires Jorge Newbery
Wed 11/18
8:05 pm-1:00 pm
2 stops21h 55m
$1,398
Showing 1-10 of 36 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 July.
| 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Buenos Aires flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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
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 $1,165). Flying from Seattle to Buenos Aires in May is currently the most expensive (average of $1,751). 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 below average for this route at the moment.
Seattle to Buenos Aires flights typically cost between $1,378 and $1,530 in August.The cheapest round-trip price found within the last 5 days was $1,031 on Multiple Airlines (Aug 25-Sep 22).
How far ahead should I book a flight from Seattle to Buenos Aires?
Booking 81 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 July 29, 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.
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
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.
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
Other flight options
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 July 29, 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 July 29, 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 July 29, 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 July 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$159 | Average$1,526 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$696 | Average$1,350 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,095 | Average$1,451 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,126 | Average$1,475 | FlexibilityNo cancel fee | On-time71% |