$433+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Jul 25 — Aug 11
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 June 25, 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 June 25, 2026.
This Air Canada deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:00 am
PDX
- EZE
3 stops48h 10m
Air Canada
Mon 11/304:45 pm
EZE
- PDX
3 stops45h 41m
Air Canada
Deal found 6/21![Air Canada logo]()
$1,171
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:15 pm
PDX
- EZE
3 stops26h 35m
Multiple Airlines
Tue 11/1011:00 am
EZE
- PDX
3 stops32h 41m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,194
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/811:15 pm
PDX
- EZE
3 stops22h 05m
Multiple Airlines
Wed 8/192:49 pm
EZE
- PDX
3 stops34h 10m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$1,211
This Mytrip deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:15 pm
PDX
- EZE
3 stops27h 30m
Multiple Airlines
Sun 8/308:40 am
EZE
- PDX
3 stops33h 10m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,232
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:04 am
PDX
- EZE
2 stops22h 36m
Delta
Mon 12/213:55 am
EZE
- PDX
2 stops23h 31m
Delta
Deal found 6/21![Delta logo]()
$1,238
This KAYAK deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:00 am
PDX
- EZE
2 stops27h 45m
LATAM Airlines
Mon 11/307:20 am
EZE
- PDX
2 stops20h 06m
LATAM Airlines
Deal found 6/24![LATAM Airlines logo]()
$1,248
This KAYAK deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:00 am
PDX
- AEP
2 stops19h 30m
LATAM Airlines
Mon 11/308:05 pm
AEP
- PDX
2 stops21h 13m
LATAM Airlines
Deal found 6/24![LATAM Airlines logo]()
$1,248
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:15 pm
PDX
- EZE
3 stops26h 25m
Multiple Airlines
Mon 11/164:55 pm
EZE
- PDX
3 stops33h 02m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,251
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:39 am
PDX
- EZE
2 stops21h 06m
American Airlines
Sun 8/308:50 pm
EZE
- PDX
2 stops24h 01m
American Airlines
Deal found 6/24![American Airlines logo]()
$1,252
This Orbitz deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:00 am
PDX
- EZE
3 stops24h 10m
Air Canada
Sun 11/224:45 pm
EZE
- PDX
3 stops45h 41m
Air Canada
Deal found 6/21![Air Canada logo]()
$1,256
This Air Canada deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:10 pm
PDX
- EZE
3 stops39h 00m
Air Canada
Sat 11/214:45 pm
EZE
- PDX
3 stops45h 41m
Air Canada
Deal found 6/21![Air Canada logo]()
$1,261
This American Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:59 pm
PDX
- EZE
1 stop27h 31m
American Airlines
Sun 11/2210:30 pm
EZE
- PDX
1 stop17h 40m
American Airlines
Deal found 6/21![American Airlines logo]()
$1,262
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 June 25, 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 June 25, 2026.
This KAYAK deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:43 am
PDX
- AEP
2 stops24h 17m
LATAM Airlines
Mon 10/128:05 pm
AEP
- PDX
2 stops20h 13m
LATAM Airlines
Deal found 6/22![LATAM Airlines logo]()
$1,248
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:02 pm
PDX
- EZE
2 stops28h 58m
United Airlines
Wed 9/309:00 pm
EZE
- PDX
1 stop19h 01m
United Airlines
Deal found 6/21![United Airlines logo]()
$1,252
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:49 am
PDX
- EZE
1 stop17h 56m
Delta
Mon 10/128:10 pm
EZE
- PDX
2 stops24h 24m
Delta
Deal found 6/22![Delta logo]()
$1,252
This Ovago deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:40 am
PDX
- AEP
2 stops21h 50m
Multiple Airlines
Sun 10/115:35 pm
AEP
- PDX
2 stops24h 00m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,294
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am
PDX
- EZE
2 stops23h 10m
Delta
Thu 11/269:30 pm
EZE
- PDX
2 stops27h 13m
Delta
Deal found 6/20![Delta logo]()
$1,252
This Expedia deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:45 am
PDX
- EZE
1 stop23h 00m
LATAM Airlines
Sat 8/293:55 am
EZE
- PDX
2 stops36h 29m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,274
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:00 pm
PDX
- EZE
1 stop15h 20m
United Airlines
Sat 11/2111:55 pm
EZE
- PDX
2 stops27h 49m
United Airlines
Deal found 6/24![United Airlines logo]()
$1,288
This KAYAK deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:33 pm
PDX
- AEP
2 stops20h 27m
Multiple Airlines
Mon 10/1210:30 pm
AEP
- PDX
3 stops40h 20m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,328
This Travelocity deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am
PDX
- EZE
1 stop22h 45m
LATAM Airlines
Mon 10/128:10 pm
EZE
- PDX
1 stop30h 16m
LATAM Airlines
Deal found 6/22![LATAM Airlines logo]()
$1,286
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:55 pm
PDX
- EZE
2 stops30h 45m
Delta
Sat 9/121:10 pm
EZE
- PDX
2 stops27h 05m
Delta
Deal found 6/24![Delta logo]()
$1,292
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:53 pm
PDX
- EZE
2 stops34h 07m
United Airlines
Tue 9/19:00 pm
EZE
- PDX
3 stops25h 19m
United Airlines
Deal found 6/22![United Airlines logo]()
$1,327
This FlightHub deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/201:53 pm
PDX
- AEP
2 stops22h 07m
Multiple Airlines
Wed 9/303:45 pm
AEP
- PDX
2 stops25h 40m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,328
This KAYAK deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am
PDX
- AEP
2 stops20h 10m
LATAM Airlines
Sat 11/215:35 pm
AEP
- PDX
2 stops23h 43m
LATAM Airlines
Deal found 6/21![LATAM Airlines logo]()
$1,288
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:50 am
PDX
- EZE
1 stop21h 10m
United Airlines
Sun 10/119:00 pm
EZE
- PDX
1 stop26h 19m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,328
This KAYAK deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am
PDX
- AEP
2 stops21h 00m
LATAM Airlines
Sat 11/218:05 pm
AEP
- PDX
2 stops21h 13m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,288
This KAYAK deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:30 am
PDX
- AEP
2 stops21h 10m
LATAM Airlines
Tue 11/103:50 pm
AEP
- PDX
2 stops24h 06m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,288
This KAYAK deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:04 am
PDX
- AEP
2 stops31h 36m
LATAM Airlines
Sat 11/143:50 pm
AEP
- PDX
2 stops24h 06m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,288
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated June 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated June 25, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:15 am
PDX
- EZE
2 stops20h 50m
American Airlines
Mon 9/148:45 pm
EZE
- PDX
2 stops20h 32m
American Airlines
Deal found 6/24![American Airlines logo]()
$1,407
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2811:59 pm
PDX
- EZE
1 stop28h 01m
United Airlines
Mon 9/149:00 pm
EZE
- PDX
1 stop18h 54m
United Airlines
Deal found 6/24![United Airlines logo]()
$1,422
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:35 am
PDX
- AEP
2 stops21h 05m
Delta
Mon 9/148:05 pm
AEP
- PDX
2 stops20h 55m
Delta
Deal found 6/24![Delta logo]()
$1,593
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1711:15 pm
PDX
- EZE
3 stops22h 05m
Multiple Airlines
Mon 8/314:50 pm
EZE
- PDX
3 stops32h 09m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,331
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:50 am
PDX
- EZE
2 stops19h 10m
United Airlines
Mon 8/319:00 pm
EZE
- PDX
1 stop18h 59m
United Airlines
Deal found 6/22![United Airlines logo]()
$1,438
This BusinessClass deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/179:27 pm
PDX
- AEP
2 stops30h 13m
Multiple Airlines
Mon 8/315:35 pm
AEP
- PDX
2 stops23h 50m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,586
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:40 pm
PDX
- EZE
2 stops28h 20m
United Airlines
Mon 7/279:00 pm
EZE
- PDX
2 stops27h 54m
United Airlines
Deal found 6/21![United Airlines logo]()
$1,402
This KAYAK deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:59 pm
PDX
- EZE
1 stop28h 01m
Multiple Airlines
Mon 7/279:00 pm
EZE
- PDX
1 stop18h 56m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,464
This Justfly.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:00 am
PDX
- AEP
2 stops21h 30m
Multiple Airlines
Mon 7/273:45 pm
AEP
- PDX
2 stops29h 02m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,513
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:13 am
PDX
- EZE
1 stop20h 47m
United Airlines
Thu 7/309:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 6/24![United Airlines logo]()
$1,463
This KAYAK deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:30 am
PDX
- AEP
2 stops21h 10m
LATAM Airlines
Thu 7/303:45 pm
AEP
- PDX
2 stops22h 42m
LATAM Airlines
Deal found 6/24![LATAM Airlines logo]()
$1,673
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2411:15 pm
PDX
- EZE
3 stops24h 55m
Multiple Airlines
Tue 8/44:50 pm
EZE
- PDX
3 stops25h 34m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,451
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 June 25, 2026.
Search for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated June 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:36 pm
PDX
- EZE
2 stops25h 47m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$433
This Mytrip deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:15 pm
PDX
- EZE
3 stops23h 45m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:33 am
PDX
- AEP
3 stops53h 17m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:15 pm
PDX
- EZE
3 stops27h 30m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$465
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:30 pm
PDX
- EZE
2 stops24h 56m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:55 pm
PDX
- EZE
2 stops27h 31m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:15 pm
PDX
- EZE
3 stops26h 25m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:15 pm
PDX
- EZE
3 stops26h 25m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$483
This Mytrip deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$493
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$498
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 June 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,171 (Air Canada) |
One-way from | $433 (Kiwi.com) |
Popular in | July |
Cheapest in | June |
Average price | $1,086 |
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 June 25, 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 - AEP
PDXAEP
Portland
Tue 9/15
11:43 am-4:00 pm
2 stops24h 17m
Buenos Aires Jorge Newbery
Mon 10/12
8:05 pm-12:18 pm
2 stops20h 13m
$1,248
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Sun 9/20
11:02 pm-8:00 am
2 stops28h 58m
Buenos Aires Ministro Pistarini
Wed 9/30
9:00 pm-12:01 pm
1 stop19h 01m
$1,252
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 9/15
11:49 am-9:45 am
1 stop17h 56m
Buenos Aires Ministro Pistarini
Mon 10/12
8:10 pm-4:34 pm
2 stops24h 24m
$1,252
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Thu 11/19
5:30 am-9:40 am
2 stops23h 10m
Buenos Aires Ministro Pistarini
Thu 11/26
9:30 pm-7:43 pm
2 stops27h 13m
$1,252
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 8/18
6:45 am-9:45 am
1 stop23h 00m
Buenos Aires Ministro Pistarini
Sat 8/29
3:55 am-12:24 pm
2 stops36h 29m
$1,274
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 9/15
7:00 am-9:45 am
1 stop22h 45m
Buenos Aires Ministro Pistarini
Mon 10/12
8:10 pm-10:26 pm
1 stop30h 16m
$1,286
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Thu 11/12
1:00 pm-9:20 am
1 stop15h 20m
Buenos Aires Ministro Pistarini
Sat 11/21
11:55 pm-10:44 pm
2 stops27h 49m
$1,288
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Wed 11/11
6:30 am-7:40 am
2 stops20h 10m
Buenos Aires Jorge Newbery
Sat 11/21
5:35 pm-12:18 pm
2 stops23h 43m
$1,288
Quickest round-trip
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Thu 11/12
6:30 am-8:30 am
2 stops21h 00m
Buenos Aires Jorge Newbery
Sat 11/21
8:05 pm-12:18 pm
2 stops21h 13m
$1,288
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Sat 10/31
6:30 am-7:40 am
2 stops21h 10m
Buenos Aires Jorge Newbery
Tue 11/10
3:50 pm-10:56 am
2 stops24h 06m
$1,288
Showing 1-10 of 35 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 June.
| 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, March is the cheapest month in which you can book a flight from Portland to Buenos Aires (average of $826). Flying from Portland to Buenos Aires in September is currently the most expensive (average of $1,179). 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?
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 June 25, 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.
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Overall
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Buenos Aires flight routes
Complete your trip
Flights by cabin class
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Other flights from Portland
Popular flights
Alternative routes for Portland 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 June 25, 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 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 June 25, 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 June 25, 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 June 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$901 | Average$1,286 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,125 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,009 | Average$1,365 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,182 | Average$1,374 | FlexibilityNo cancel fee | On-time81% |