$481+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Sep 12 — Sep 191
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 13, 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 13, 2026.
This Mytrip deal was found by Cheapflights users on 8/12. 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 10/306:10 pm -
3 stops29h 35m
Wed 11/119:15 pm -
3 stops28h 35m
Deal found 8/12![Multiple Airlines logo]()
$1,147
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 11/248:20 am -
2 stops21h 20m
Wed 12/28:00 am -
1 stop17h 50m
Deal found 8/12![Multiple Airlines logo]()
$1,163
This Mytrip deal was found by Cheapflights users on 8/11. 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 11/1210:22 pm -
3 stops29h 54m
Wed 11/189:15 pm -
3 stops28h 35m
Deal found 8/11![Multiple Airlines logo]()
$1,183
This Mytrip deal was found by Cheapflights users on 8/11. 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 10/411:15 pm -
3 stops32h 15m
Tue 10/201:10 pm -
3 stops35h 49m
Deal found 8/11![Multiple Airlines logo]()
$1,185
This Mytrip deal was found by Cheapflights users on 8/11. 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 10/511:15 pm -
3 stops32h 15m
Tue 10/131:10 pm -
3 stops35h 49m
Deal found 8/11![Multiple Airlines logo]()
$1,187
This Mytrip deal was found by Cheapflights users on 8/10. 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 9/911:15 pm -
3 stops25h 50m
Wed 9/164:50 pm -
3 stops32h 09m
Deal found 8/10![Multiple Airlines logo]()
$1,216
This LATAM Airlines deal was found by Cheapflights users on 8/10. 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 9/306:08 am -
2 stops23h 32m
Wed 10/141:10 pm -
2 stops28h 28m
Deal found 8/10![LATAM Airlines logo]()
$1,217
This oojo deal was found by Cheapflights users on 8/10. 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 11/166:47 am -
2 stops22h 53m
Mon 11/307:20 am -
2 stops33h 05m
Deal found 8/10![Multiple Airlines logo]()
$1,225
This oojo deal was found by Cheapflights users on 8/8. 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 11/18:25 pm -
2 stops31h 05m
Sun 11/155:35 pm -
2 stops34h 35m
Deal found 8/8![Multiple Airlines logo]()
$1,225
This Expedia deal was found by Cheapflights users on 8/8. 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 12/26:00 am -
2 stops21h 30m
Sun 12/205:35 pm -
2 stops28h 07m
Deal found 8/8![Multiple Airlines logo]()
$1,230
This oojo deal was found by Cheapflights users on 8/10. 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 10/189:30 pm -
2 stops30h 10m
Sun 10/258:05 pm -
2 stops20h 03m
Deal found 8/10![Multiple Airlines logo]()
$1,232
This FlightHub deal was found by Cheapflights users on 8/12. 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 10/310:10 am -
3 stops48h 20m
Mon 10/194:35 pm -
3 stops44h 56m
Deal found 8/12![Air Canada logo]()
$1,233
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 13, 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 13, 2026.
This Expedia deal was found by Cheapflights users on 8/8. 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 12/26:00 am -
2 stops21h 30m
Sun 12/205:35 pm -
2 stops28h 07m
Deal found 8/8![Multiple Airlines logo]()
$1,230
This Delta deal was found by Cheapflights users on 8/11. 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 10/410:57 pm -
2 stops30h 43m
Tue 10/208:10 pm -
1 stop18h 32m
Deal found 8/11![Delta logo]()
$1,239
This KAYAK deal was found by Cheapflights users on 8/10. 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 2/81:00 pm -
2 stops24h 30m
Sat 2/205:35 pm -
2 stops23h 43m
Deal found 8/10![LATAM Airlines logo]()
$1,288
This United Airlines deal was found by Cheapflights users on 8/10. 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 2/98:46 am -
2 stops19h 34m
Fri 2/1910:05 pm -
2 stops26h 02m
Deal found 8/10![United Airlines logo]()
$1,292
This Delta deal was found by Cheapflights users on 8/11. 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 10/46:08 am -
2 stops21h 32m
Tue 10/208:05 pm -
2 stops21h 33m
Deal found 8/11![Delta logo]()
$1,278
This Ovago deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:42 am -
2 stops30h 48m
Wed 11/188:05 pm -
2 stops22h 45m
Deal found 8/10![Multiple Airlines logo]()
$1,282
This oojo deal was found by Cheapflights users on 8/9. 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 10/310:47 am -
2 stops24h 03m
Sun 10/119:25 am -
2 stops30h 43m
Deal found 8/9![LATAM Airlines logo]()
$1,320
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/148:40 am -
2 stops19h 20m
Mon 9/289:00 pm -
1 stop19h 01m
Deal found 8/8![United Airlines logo]()
$1,323
This Delta deal was found by Cheapflights users on 8/10. 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 2/197:20 am -
2 stops20h 06m
Deal found 8/10![Delta logo]()
$1,288
This lol.travel deal was found by Cheapflights users on 8/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:45 am -
1 stop23h 00m
Tue 10/208:10 pm -
1 stop18h 32m
Deal found 8/11![LATAM Airlines logo]()
$1,324
This Mytrip deal was found by Cheapflights users on 8/11. 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 10/42:30 pm -
3 stops27h 00m
Tue 10/208:40 am -
2 stops32h 55m
Deal found 8/11![Multiple Airlines logo]()
$1,361
This Delta deal was found by Cheapflights users on 8/10. 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 -
2 stops20h 36m
Fri 2/195:35 pm -
2 stops23h 43m
Deal found 8/10![Delta logo]()
$1,288
This Delta deal was found by Cheapflights users on 8/10. 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 8/10![Delta logo]()
$1,292
This Delta deal was found by Cheapflights users on 8/12. 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 10/66:45 am -
2 stops19h 25m
Wed 10/218:10 pm -
1 stop21h 28m
Deal found 8/12![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 8/12. 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 10/56:08 am -
2 stops20h 02m
Thu 10/228:10 pm -
1 stop26h 59m
Deal found 8/12![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 8/12. 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 10/66:45 am -
2 stops20h 55m
Mon 10/193:45 pm -
2 stops24h 23m
Deal found 8/12![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 8/12. 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 10/66:45 am -
2 stops20h 55m
Tue 10/203:45 pm -
2 stops22h 57m
Deal found 8/12![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 8/12. 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 10/47:10 am -
2 stops28h 50m
Mon 10/193:45 pm -
2 stops24h 23m
Deal found 8/12![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 8/12. 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 10/52:10 pm -
2 stops21h 50m
Thu 10/223:45 pm -
2 stops24h 23m
Deal found 8/12![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 8/12. 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 10/76:50 am -
2 stops22h 50m
Thu 10/228:10 pm -
2 stops19h 59m
Deal found 8/12![Delta logo]()
$1,302
This Delta deal was found by Cheapflights users on 8/12. 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 10/111:49 am -
2 stops17h 51m
Tue 10/208:10 pm -
2 stops20h 28m
Deal found 8/12![Delta logo]()
$1,302
This Delta deal was found by Cheapflights users on 8/12. 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 10/16:45 am -
2 stops22h 55m
Thu 10/228:10 pm -
1 stop18h 32m
Deal found 8/12![Delta logo]()
$1,302
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated August 13, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/10. 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 9/311:15 pm -
3 stops30h 01m
Mon 9/211:10 pm -
3 stops35h 49m
Deal found 8/10![Multiple Airlines logo]()
$1,307
This Mytrip deal was found by Cheapflights users on 8/10. 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 9/911:15 pm -
3 stops25h 50m
Wed 9/164:50 pm -
3 stops32h 09m
Deal found 8/10![Multiple Airlines logo]()
$1,216
This oojo deal was found by Cheapflights users on 8/10. 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 9/97:03 am -
2 stops21h 27m
Wed 9/168:40 am -
2 stops32h 12m
Deal found 8/10![Multiple Airlines logo]()
$1,375
This LATAM Airlines deal was found by Cheapflights users on 8/12. 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 9/96:08 am -
2 stops22h 22m
Wed 9/168:05 pm -
2 stops20h 47m
Deal found 8/12![LATAM Airlines logo]()
$1,448
This Mytrip deal was found by Cheapflights users on 8/11. 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 9/1011:15 pm -
3 stops28h 15m
Wed 9/162:30 am -
3 stops35h 01m
Deal found 8/11![Multiple Airlines logo]()
$1,342
This oojo deal was found by Cheapflights users on 8/11. 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.
Thu 9/107:03 am -
2 stops21h 27m
Thu 9/175:35 pm -
2 stops23h 17m
Deal found 8/11![Multiple Airlines logo]()
$1,486
This Mytrip deal was found by Cheapflights users on 8/8. 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 9/1411:15 pm -
3 stops26h 25m
Mon 9/284:50 pm -
3 stops32h 09m
Deal found 8/8![Multiple Airlines logo]()
$1,269
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/148:40 am -
2 stops19h 20m
Mon 9/289:00 pm -
1 stop19h 01m
Deal found 8/8![United Airlines logo]()
$1,323
This Mytrip deal was found by Cheapflights users on 8/8. 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 9/1411:15 pm -
3 stops26h 25m
Mon 9/285:35 pm -
3 stops29h 36m
Deal found 8/8![Multiple Airlines logo]()
$1,471
This LATAM Airlines deal was found by Cheapflights users on 8/10. 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 9/306:08 am -
2 stops23h 32m
Wed 10/141:10 pm -
2 stops28h 28m
Deal found 8/10![LATAM Airlines logo]()
$1,217
This oojo deal was found by Cheapflights users on 8/10. 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 9/307:03 am -
2 stops21h 27m
Wed 10/145:35 pm -
2 stops22h 33m
Deal found 8/10![Multiple Airlines logo]()
$1,339
This Mytrip deal was found by Cheapflights users on 8/10. 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 9/3011:15 pm -
3 stops25h 50m
Wed 10/144:50 pm -
3 stops32h 09m
Deal found 8/10![Multiple Airlines logo]()
$1,365
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 13, 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 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/307:03 am -
3 stops39h 42m
Deal found 8/10![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 1/47:00 am -
2 stops22h 00m
Deal found 8/8![Multiple Airlines logo]()
$522
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 1/47:00 am -
3 stops57h 20m
Deal found 8/8![Multiple Airlines logo]()
$578
This Air Canada deal was found by Cheapflights users on 8/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:45 pm -
3 stops62h 45m
Deal found 8/9![Air Canada logo]()
$597
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 1/107:25 am -
3 stops34h 05m
Deal found 8/8![Multiple Airlines logo]()
$626
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 1/105:30 pm -
3 stops46h 50m
Deal found 8/8![Multiple Airlines logo]()
$648
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.
Sat 1/29:35 pm -
3 stops41h 40m
Deal found 8/13![Multiple Airlines logo]()
$655
This oojo deal was found by Cheapflights users on 8/8. 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 8/8![Multiple Airlines logo]()
$844
This SmartFares deal was found by Cheapflights users on 8/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:03 am -
2 stops21h 27m
Deal found 8/10![Multiple Airlines logo]()
$860
This Booking.com deal was found by Cheapflights users on 8/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/319:48 pm -
2 stops26h 52m
Deal found 8/12![Multiple Airlines logo]()
$1,363
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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,147 (Mytrip) |
One-way from | $481 (Kiwi.com) |
Popular in | July |
Cheapest in | June |
Average price | $1,246 |
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 13, 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
Wed 12/2
6:00 am-8:30 am
2 stops21h 30m
Buenos Aires Jorge Newbery
Sun 12/20
5:35 pm-4:42 pm
2 stops28h 07m
$1,230
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Sun 10/4
10:57 pm-9:40 am
2 stops30h 43m
Buenos Aires Ministro Pistarini
Tue 10/20
8:10 pm-10:42 am
1 stop18h 32m
$1,239
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Sun 10/4
6:08 am-7:40 am
2 stops21h 32m
Buenos Aires Jorge Newbery
Tue 10/20
8:05 pm-1:38 pm
2 stops21h 33m
$1,278
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Wed 10/14
7:42 am-6:30 pm
2 stops30h 48m
Buenos Aires Jorge Newbery
Wed 11/18
8:05 pm-1:50 pm
2 stops22h 45m
$1,282
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Mon 2/8
1:00 pm-6:30 pm
2 stops24h 30m
Buenos Aires Jorge Newbery
Sat 2/20
5:35 pm-12:18 pm
2 stops23h 43m
$1,288
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
7:20 am-10:26 pm
2 stops20h 06m
$1,288
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Mon 2/8
6:04 am-7:40 am
2 stops20h 36m
Buenos Aires Jorge Newbery
Fri 2/19
5:35 pm-12:18 pm
2 stops23h 43m
$1,288
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Tue 2/9
8:46 am-9:20 am
2 stops19h 34m
Buenos Aires Ministro Pistarini
Fri 2/19
10:05 pm-7:07 pm
2 stops26h 02m
$1,292
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Tue 2/9
6:15 am-7:35 am
2 stops20h 20m
Buenos Aires Ministro Pistarini
Fri 2/19
11:35 pm-4:34 pm
2 stops21h 59m
$1,292
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Tue 10/6
6:45 am-6:10 am
2 stops19h 25m
Buenos Aires Ministro Pistarini
Wed 10/21
8:10 pm-1:38 pm
1 stop21h 28m
$1,298
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-AEP
PDX-EZE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portland to Buenos Aires
PDX-BUE
PDX-AEP
PDX-EZE
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.
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 13, 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
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
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 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 13, 2026.
Complete your trip
Complete your trip to Buenos Aires by adding a car rental and/or hotel reservation to your travel itinerary.
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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 13, 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 13, 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 13, 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$1,446 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,182 | Average$1,390 | FlexibilityNo cancel fee | On-time81% |