$566+ Cheap flights from Portland (PDX) 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Sep 17 — Sep 241
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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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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 Portland to Buenos Aires
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Cheapest flights from Portland to Buenos AiresExplore the most affordable flight options available from Portland to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
Explore the most affordable flight options available from Portland to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 12/311:38 am -
2 stops34h 22m
Tue 12/1510:45 pm -
1 stop27h 05m
Deal found 8/16![Multiple Airlines logo]()
$1,098
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/263:52 pm -
2 stops36h 58m
Tue 12/1510:45 pm -
1 stop27h 05m
Deal found 8/16![Multiple Airlines logo]()
$1,103
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Wed 12/29:35 pm -
2 stops24h 25m
Tue 12/1510:45 pm -
1 stop27h 05m
Deal found 8/13![Multiple Airlines logo]()
$1,163
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:15 pm -
3 stops30h 01m
Tue 10/139:15 am -
3 stops33h 36m
Deal found 8/14![Multiple Airlines logo]()
$1,195
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Tue 12/87:18 am -
1 stop21h 32m
Wed 12/234:00 am -
2 stops21h 39m
Deal found 8/16![Multiple Airlines logo]()
$1,200
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 11/177:01 am -
2 stops22h 39m
Wed 12/910:45 pm -
1 stop27h 05m
Deal found 8/14![Multiple Airlines logo]()
$1,218
This Expedia deal was found by Cheapflights users on 8/16. 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.
Thu 11/2611:55 am -
1 stop16h 45m
Tue 12/159:30 pm -
1 stop26h 38m
Deal found 8/16![LATAM Airlines logo]()
$1,230
This Expedia deal was found by Cheapflights users on 8/16. 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.
Thu 11/266:00 am -
2 stops21h 30m
Tue 12/158:05 pm -
2 stops20h 20m
Deal found 8/16![Multiple Airlines logo]()
$1,230
This Expedia deal was found by Cheapflights users on 8/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:05 pm -
2 stops32h 55m
Mon 11/169:30 pm -
1 stop26h 46m
Deal found 8/15![LATAM Airlines logo]()
$1,235
This Expedia deal was found by Cheapflights users on 8/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:48 pm -
2 stops22h 42m
Mon 11/165:35 pm -
2 stops23h 35m
Deal found 8/15![Multiple Airlines logo]()
$1,235
This Expedia deal was found by Cheapflights users on 8/16. 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.
Mon 11/97:00 am -
2 stops31h 40m
Mon 12/215:35 pm -
2 stops23h 43m
Deal found 8/16![LATAM Airlines logo]()
$1,241
This KAYAK deal was found by Cheapflights users on 8/13. 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.
Mon 11/166:50 am -
1 stop21h 50m
Mon 11/3012:50 pm -
2 stops28h 20m
Deal found 8/13![LATAM Airlines logo]()
$1,248
Best flights from Portland to Buenos AiresDiscover carefully curated flight deals from Portland to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
Discover carefully curated flight deals from Portland to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2026.
This Expedia deal was found by Cheapflights users on 8/16. 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.
Thu 11/266:00 am -
2 stops21h 30m
Tue 12/158:05 pm -
2 stops20h 20m
Deal found 8/16![Multiple Airlines logo]()
$1,230
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Wed 2/1012:51 pm -
1 stop15h 29m
Wed 2/1710:05 pm -
1 stop19h 12m
Deal found 8/13![United Airlines logo]()
$1,248
This KAYAK deal was found by Cheapflights users on 8/14. 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.
Tue 11/176:50 am -
2 stops22h 40m
Wed 12/95:35 pm -
2 stops23h 35m
Deal found 8/14![LATAM Airlines logo]()
$1,248
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/911:40 am -
2 stops23h 20m
Wed 2/178:05 pm -
2 stops30h 22m
Deal found 8/13![Delta logo]()
$1,248
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:54 pm -
1 stop15h 26m
Wed 12/910:05 pm -
1 stop19h 08m
Deal found 8/14![United Airlines logo]()
$1,248
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:24 pm -
2 stops20h 06m
Thu 12/245:35 pm -
2 stops22h 21m
Deal found 8/16![Delta logo]()
$1,248
This oojo deal was found by Cheapflights users on 8/14. 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.
Sat 11/288:20 am -
2 stops29h 10m
Sun 12/135:35 pm -
2 stops23h 35m
Deal found 8/14![Multiple Airlines logo]()
$1,275
This United Airlines deal was found by Cheapflights users on 8/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:10 am -
1 stop19h 10m
Thu 12/2411:55 pm -
1 stop17h 40m
Deal found 8/16![United Airlines logo]()
$1,248
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/86:04 am -
1 stop20h 31m
Fri 2/1911:35 pm -
1 stop24h 33m
Deal found 8/16![Delta logo]()
$1,288
This United Airlines deal was found by Cheapflights users on 8/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:10 am -
2 stops21h 10m
Tue 12/1511:55 pm -
3 stops23h 36m
Deal found 8/16![United Airlines logo]()
$1,252
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/81:00 pm -
2 stops22h 00m
Fri 2/198:05 pm -
2 stops25h 08m
Deal found 8/16![Delta logo]()
$1,288
This oojo deal was found by Cheapflights users on 8/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:55 pm -
2 stops34h 35m
Sun 10/48:05 pm -
2 stops44h 03m
Deal found 8/13![Multiple Airlines logo]()
$1,422
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/91:00 pm -
2 stops22h 00m
Sat 2/205:35 pm -
2 stops23h 43m
Deal found 8/16![Delta logo]()
$1,288
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sat 1/98:45 am -
2 stops17h 35m
Wed 2/311:55 pm -
3 stops23h 36m
Deal found 8/13![United Airlines logo]()
$1,292
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:22 pm -
3 stops28h 18m
Wed 12/98:40 am -
3 stops41h 10m
Deal found 8/14![Multiple Airlines logo]()
$1,427
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/216:15 am -
2 stops20h 20m
Fri 2/1211:35 pm -
2 stops21h 49m
Deal found 8/18![Delta logo]()
$1,292
This United Airlines deal was found by Cheapflights users on 8/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1012:51 pm -
1 stop15h 29m
Fri 2/1910:05 pm -
2 stops26h 02m
Deal found 8/16![United Airlines logo]()
$1,292
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/96:15 am -
2 stops20h 20m
Fri 2/1911:35 pm -
2 stops21h 59m
Deal found 8/13![Delta logo]()
$1,292
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Mon 11/169:00 am -
2 stops17h 20m
Mon 11/3010:05 pm -
3 stops25h 26m
Deal found 8/13![United Airlines logo]()
$1,327
This Delta deal was found by Cheapflights users on 8/15. 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.
Wed 11/47:02 pm -
2 stops31h 38m
Sat 11/145:35 pm -
2 stops23h 35m
Deal found 8/15![Delta logo]()
$1,298
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated August 18, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated August 18, 2026 and is based on user searches.
This LATAM Airlines deal was found by Cheapflights users on 8/17. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:10 pm -
1 stop15h 35m
Mon 9/288:10 pm -
1 stop20h 50m
Deal found 8/17![LATAM Airlines logo]()
$1,398
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:15 pm -
3 stops26h 25m
Fri 9/251:10 pm -
3 stops35h 49m
Deal found 8/14![Multiple Airlines logo]()
$1,412
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:15 pm -
3 stops26h 25m
Mon 9/281:10 pm -
3 stops35h 49m
Deal found 8/17![Multiple Airlines logo]()
$1,425
This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:25 am -
2 stops21h 05m
Sun 10/410:15 pm -
2 stops25h 14m
Deal found 8/13![American Airlines logo]()
$1,327
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/2711:30 pm -
2 stops28h 30m
Sun 10/49:00 pm -
1 stop19h 01m
Deal found 8/13![United Airlines logo]()
$1,367
This oojo deal was found by Cheapflights users on 8/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:55 pm -
2 stops34h 35m
Sun 10/48:05 pm -
2 stops44h 03m
Deal found 8/13![Multiple Airlines logo]()
$1,422
This oojo deal was found by Cheapflights users on 8/14. 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.
Mon 9/287:03 am -
2 stops24h 27m
Mon 10/57:21 pm -
3 stops44h 47m
Deal found 8/14![Multiple Airlines logo]()
$1,411
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:15 pm -
3 stops30h 45m
Tue 10/64:50 pm -
3 stops32h 09m
Deal found 8/14![Multiple Airlines logo]()
$1,262
This LATAM Airlines deal was found by Cheapflights users on 8/14. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:34 pm -
2 stops18h 26m
Tue 10/63:45 pm -
2 stops22h 57m
Deal found 8/14![LATAM Airlines logo]()
$1,398
This LATAM Airlines deal was found by Cheapflights users on 8/16. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:49 am -
2 stops24h 11m
Wed 10/712:55 pm -
2 stops27h 01m
Deal found 8/16![LATAM Airlines logo]()
$1,401
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:45 am -
2 stops22h 55m
Wed 10/74:45 pm -
2 stops23h 11m
Deal found 8/16![Delta logo]()
$1,402
This Mytrip deal was found by Cheapflights users on 8/15. 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.
Wed 9/302:30 pm -
3 stops29h 55m
Wed 10/74:50 pm -
3 stops32h 09m
Deal found 8/15![Multiple Airlines logo]()
$1,407
One-way flights from Portland to Buenos AiresSearch for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
Search for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:50 pm -
2 stops34h 55m
Deal found 8/18![Multiple Airlines logo]()
$566
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 1/1510:22 pm -
3 stops52h 08m
Deal found 8/13![Multiple Airlines logo]()
$586
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 1/1410:22 pm -
3 stops52h 08m
Deal found 8/13![Multiple Airlines logo]()
$591
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:30 am -
3 stops45h 00m
Deal found 8/18![Multiple Airlines logo]()
$600
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 1/147:00 am -
2 stops39h 23m
Deal found 8/13![Multiple Airlines logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 1/155:00 am -
3 stops45h 35m
Deal found 8/13![Multiple Airlines logo]()
$651
This KAYAK deal was found by Cheapflights users on 8/14. 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.
Sun 9/138:18 pm -
2 stops22h 08m
Deal found 8/14![Multiple Airlines logo]()
$652
This oojo deal was found by Cheapflights users on 8/14. 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.
Sun 1/316:30 am -
2 stops34h 20m
Deal found 8/14![Aeromexico logo]()
$754
This Expedia deal was found by Cheapflights users on 8/16. 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.
Tue 12/811:00 pm -
2 stops44h 35m
Deal found 8/16![Multiple Airlines logo]()
$769
This Expedia deal was found by Cheapflights users on 8/16. 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.
Tue 12/89:35 pm -
2 stops27h 05m
Deal found 8/16![Multiple Airlines logo]()
$817
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:55 pm -
2 stops30h 45m
Deal found 8/16![Delta logo]()
$853
This oojo deal was found by Cheapflights users on 8/14. 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.
Sun 1/319:30 pm -
2 stops40h 00m
Deal found 8/14![Multiple Airlines logo]()
$860
Find flight deals from Portland to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 August 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,195 (Mytrip) |
One-way from | $566 (Kiwi.com) |
Popular in | July |
Cheapest in | June |
Average price | $1,247 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland 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 August 18, 2026.
Use the filters below to find and compare flights from Portland to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Thu 11/26
6:00 am-8:30 am
2 stops21h 30m
Buenos Aires Jorge Newbery
Tue 12/15
8:05 pm-11:25 am
2 stops20h 20m
$1,230
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Wed 2/10
12:51 pm-9:20 am
1 stop15h 29m
Buenos Aires Ministro Pistarini
Wed 2/17
10:05 pm-12:17 pm
1 stop19h 12m
$1,248
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Tue 11/17
6:50 am-10:30 am
2 stops22h 40m
Buenos Aires Jorge Newbery
Wed 12/9
5:35 pm-12:10 pm
2 stops23h 35m
$1,248
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Tue 2/9
11:40 am-4:00 pm
2 stops23h 20m
Buenos Aires Jorge Newbery
Wed 2/17
8:05 pm-9:27 pm
2 stops30h 22m
$1,248
Quickest round-trip
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Tue 11/17
12:54 pm-9:20 am
1 stop15h 26m
Buenos Aires Ministro Pistarini
Wed 12/9
10:05 pm-12:13 pm
1 stop19h 08m
$1,248
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Mon 12/7
5:24 pm-6:30 pm
2 stops20h 06m
Buenos Aires Jorge Newbery
Thu 12/24
5:35 pm-10:56 am
2 stops22h 21m
$1,248
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Mon 12/7
7:10 am-7:20 am
1 stop19h 10m
Buenos Aires Ministro Pistarini
Thu 12/24
11:55 pm-12:35 pm
1 stop17h 40m
$1,248
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Thu 11/26
7:10 am-9:20 am
2 stops21h 10m
Buenos Aires Ministro Pistarini
Tue 12/15
11:55 pm-6:31 pm
3 stops23h 36m
$1,252
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Sat 11/28
8:20 am-6:30 pm
2 stops29h 10m
Buenos Aires Jorge Newbery
Sun 12/13
5:35 pm-12:10 pm
2 stops23h 35m
$1,275
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Mon 2/8
6:04 am-7:35 am
1 stop20h 31m
Buenos Aires Ministro Pistarini
Fri 2/19
11:35 pm-7:08 pm
1 stop24h 33m
$1,288
Showing 1-10 of 34 resultsSorted by cheapest first
Compare providers for flights from Portland 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 Portland to Buenos Aires in August.
| 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 Portland-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Portland with our price prediction graph.
PDX-BUE
PDX-EZE
PDX-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 Portland to Buenos Aires
PDX-BUE
PDX-EZE
PDX-AEP
What is the cheapest month to book a flight from Portland to Buenos Aires?
Currently, April is the cheapest month in which you can book a flight from Portland to Buenos Aires (average of $1,181). Flying from Portland to Buenos Aires in July is currently the most expensive (average of $1,616). 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 Portland to Buenos Aires?
Airfare is below average for this route at the moment.
Portland to Buenos Aires flights typically cost between $1,154 and $1,247 in December.The cheapest round-trip price found within the last 5 days was $1,098 on Multiple Airlines (Dec 3-Dec 15).
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 August 18, 2026.
Peruse reviews from past customers who have flown with Delta,LATAM Airlines, andUnited Airlines from Portland to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Portland 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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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 August 18, 2026.
Complete your trip
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Search flights from Portland to Buenos Aires by cabin class
Find flights from Portland to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Buenos Aires flights
Browse other Portland and Buenos Aires flight options. Last updated on August 18, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on August 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Portland to Buenos Aires
Discover the top 4 airlines that operate flights from Portland 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 August 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$901 | Average$1,247 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,152 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,009 | Average$1,447 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,182 | Average$1,396 | FlexibilityNo cancel fee | On-time81% |