$501+ 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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Jun 10 — Jun 171
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 May 11, 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 May 11, 2026.
This United Airlines deal was found by Cheapflights users on 5/6. 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 10/16:56 am
PDX
- EZE
1 stop21h 04m
United Airlines
Wed 10/149:00 pm
EZE
- PDX
1 stop26h 18m
United Airlines
Deal found 5/6![United Airlines logo]()
$967
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/2110:40 pm
PDX
- EZE
2 stops29h 20m
United Airlines
Tue 7/289:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 5/6![United Airlines logo]()
$971
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/2110:40 pm
PDX
- EZE
2 stops29h 20m
United Airlines
Wed 7/299:00 pm
EZE
- PDX
1 stop29h 48m
United Airlines
Deal found 5/6![United Airlines logo]()
$984
This FlightHub deal was found by Cheapflights users on 5/6. 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.
Mon 7/205:37 pm
PDX
- EZE
2 stops21h 13m
LATAM Airlines
Mon 7/277:21 pm
EZE
- PDX
2 stops20h 59m
LATAM Airlines
Deal found 5/6![LATAM Airlines logo]()
$1,000
This Ovago deal was found by Cheapflights users on 5/7. 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.
Tue 6/161:02 pm
PDX
- EZE
1 stop14h 58m
Multiple Airlines
Tue 6/239:00 pm
EZE
- PDX
1 stop18h 56m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,001
This KAYAK deal was found by Cheapflights users on 5/6. 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 10/16:04 am
PDX
- EZE
2 stops23h 36m
LATAM Airlines
Thu 10/157:21 pm
EZE
- PDX
2 stops20h 57m
LATAM Airlines
Deal found 5/6![LATAM Airlines logo]()
$1,005
This Ovago deal was found by Cheapflights users on 5/6. 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.
Thu 10/112:57 pm
PDX
- EZE
1 stop15h 03m
Azul
Thu 10/159:00 pm
EZE
- PDX
1 stop19h 00m
Azul
Deal found 5/6![Azul logo]()
$1,007
This KAYAK deal was found by Cheapflights users on 5/6. 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 7/2010:53 am
PDX
- EZE
2 stops27h 57m
LATAM Airlines
Thu 7/301:10 pm
EZE
- PDX
2 stops33h 46m
LATAM Airlines
Deal found 5/6![LATAM Airlines logo]()
$1,013
This BusinessClass deal was found by Cheapflights users on 5/7. 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.
Thu 6/181:02 pm
PDX
- EZE
1 stop14h 58m
Avianca
Tue 6/239:00 pm
EZE
- PDX
1 stop26h 18m
Avianca
Deal found 5/7![Avianca logo]()
$1,019
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/2211:40 pm
PDX
- EZE
2 stops28h 20m
United Airlines
Thu 7/309:00 pm
EZE
- PDX
2 stops28h 15m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,021
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/197:13 am
PDX
- EZE
1 stop20h 47m
United Airlines
Thu 7/309:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,027
This KAYAK deal was found by Cheapflights users on 5/6. 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 10/319:45 pm
PDX
- AEP
2 stops29h 55m
LATAM Airlines
Tue 11/108:05 pm
AEP
- PDX
2 stops21h 13m
LATAM Airlines
Deal found 5/6![LATAM Airlines logo]()
$1,061
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 May 11, 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 May 11, 2026.
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/2110:40 pm
PDX
- EZE
2 stops29h 20m
United Airlines
Wed 7/299:00 pm
EZE
- PDX
2 stops28h 15m
United Airlines
Deal found 5/6![United Airlines logo]()
$971
This KAYAK deal was found by Cheapflights users on 5/6. 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 7/206:33 am
PDX
- AEP
2 stops21h 57m
LATAM Airlines
Thu 7/303:45 pm
AEP
- PDX
2 stops24h 35m
LATAM Airlines
Deal found 5/6![LATAM Airlines logo]()
$1,149
This FlightHub deal was found by Cheapflights users on 5/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:10 am
PDX
- EZE
3 stops24h 20m
Air Canada
Wed 9/304:35 pm
EZE
- PDX
3 stops44h 56m
Air Canada
Deal found 5/11![Air Canada logo]()
$1,169
This Ovago deal was found by Cheapflights users on 5/11. 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 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 10/1110:30 pm
AEP
- PDX
3 stops39h 01m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,303
This Delta deal was found by Cheapflights users on 5/7. 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 6/166:30 am
PDX
- AEP
2 stops21h 10m
Delta
Tue 6/238:05 pm
AEP
- PDX
2 stops24h 37m
Delta
Deal found 5/7![Delta logo]()
$1,447
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/1710:40 pm
PDX
- EZE
2 stops29h 20m
United Airlines
Wed 7/299:00 pm
EZE
- PDX
2 stops28h 15m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,031
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/1811:40 pm
PDX
- EZE
2 stops28h 20m
United Airlines
Mon 7/279:00 pm
EZE
- PDX
2 stops23h 47m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,031
This KAYAK deal was found by Cheapflights users on 5/10. 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 8/176:20 am
PDX
- AEP
2 stops21h 20m
LATAM Airlines
Mon 8/248:05 pm
AEP
- PDX
2 stops20h 15m
LATAM Airlines
Deal found 5/10![LATAM Airlines logo]()
$1,289
This United Airlines deal was found by Cheapflights users on 5/6. 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 6/57:13 am
PDX
- EZE
1 stop20h 47m
United Airlines
Fri 6/129:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,087
This KAYAK deal was found by Cheapflights users on 5/7. 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.
Fri 10/210:00 am
PDX
- AEP
2 stops24h 50m
LATAM Airlines
Wed 10/143:45 pm
AEP
- PDX
2 stops24h 33m
LATAM Airlines
Deal found 5/7![LATAM Airlines logo]()
$1,321
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:33 am
PDX
- AEP
2 stops21h 57m
LATAM Airlines
Fri 7/243:45 pm
AEP
- PDX
2 stops22h 42m
LATAM Airlines
Deal found 5/8![LATAM Airlines logo]()
$1,329
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:04 pm
PDX
- EZE
1 stop14h 56m
United Airlines
Mon 9/289:00 pm
EZE
- PDX
1 stop19h 00m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,247
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Mon 9/286:56 am
PDX
- EZE
1 stop21h 04m
United Airlines
Thu 10/19:00 pm
EZE
- PDX
1 stop19h 00m
United Airlines
Deal found 5/10![United Airlines logo]()
$1,247
This Ovago deal was found by Cheapflights users on 5/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:04 am
PDX
- AEP
2 stops22h 26m
LATAM Airlines
Sun 10/113:45 pm
AEP
- PDX
2 stops24h 33m
LATAM Airlines
Deal found 5/8![LATAM Airlines logo]()
$1,407
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Mon 8/179:00 am
PDX
- EZE
2 stops19h 00m
United Airlines
Mon 8/249:00 pm
EZE
- PDX
3 stops25h 19m
United Airlines
Deal found 5/10![United Airlines logo]()
$1,251
This LATAM Airlines deal was found by Cheapflights users on 5/8. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
PDX
- AEP
2 stops29h 00m
LATAM Airlines
Mon 9/283:45 pm
AEP
- PDX
2 stops25h 21m
LATAM Airlines
Deal found 5/8![LATAM Airlines logo]()
$1,421
This KAYAK deal was found by Cheapflights users on 5/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2810:53 am
PDX
- AEP
2 stops27h 37m
LATAM Airlines
Mon 9/148:05 pm
AEP
- PDX
2 stops20h 08m
LATAM Airlines
Deal found 5/11![LATAM Airlines logo]()
$1,429
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated May 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/7. 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 5/249:39 pm
PDX
- EZE
1 stop32h 06m
Delta
Sun 5/317:35 am
EZE
- PDX
2 stops41h 26m
Delta
Deal found 5/7![Delta logo]()
$1,187
This United Airlines deal was found by Cheapflights users on 5/6. 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 6/57:13 am
PDX
- EZE
1 stop20h 47m
United Airlines
Fri 6/129:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,087
This KAYAK deal was found by Cheapflights users on 5/6. 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.
Fri 6/511:21 am
PDX
- AEP
2 stops23h 29m
LATAM Airlines
Fri 6/123:45 pm
AEP
- PDX
2 stops25h 15m
LATAM Airlines
Deal found 5/6![LATAM Airlines logo]()
$1,129
This Ovago deal was found by Cheapflights users on 5/7. 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.
Tue 6/161:02 pm
PDX
- EZE
1 stop14h 58m
Multiple Airlines
Tue 6/239:00 pm
EZE
- PDX
1 stop18h 56m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,001
This KAYAK deal was found by Cheapflights users on 5/7. 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 6/166:35 am
PDX
- EZE
1 stop23h 10m
LATAM Airlines
Wed 6/2412:15 pm
EZE
- PDX
2 stops28h 10m
LATAM Airlines
Deal found 5/7![LATAM Airlines logo]()
$1,109
This KAYAK deal was found by Cheapflights users on 5/7. 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 6/1611:40 am
PDX
- AEP
2 stops29h 50m
LATAM Airlines
Wed 6/247:20 pm
AEP
- PDX
2 stops21h 05m
LATAM Airlines
Deal found 5/7![LATAM Airlines logo]()
$1,126
This KAYAK deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1710:53 am
PDX
- AEP
2 stops23h 57m
LATAM Airlines
Wed 6/247:20 pm
AEP
- PDX
2 stops21h 05m
LATAM Airlines
Deal found 5/7![LATAM Airlines logo]()
$1,276
This BusinessClass deal was found by Cheapflights users on 5/7. 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.
Thu 6/181:02 pm
PDX
- EZE
1 stop14h 58m
Avianca
Tue 6/239:00 pm
EZE
- PDX
1 stop26h 18m
Avianca
Deal found 5/7![Avianca logo]()
$1,019
This oojo deal was found by Cheapflights users on 5/9. 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.
Sun 6/286:40 am
PDX
- EZE
2 stops34h 45m
Aeromexico
Mon 9/1411:25 pm
EZE
- PDX
2 stops26h 57m
Aeromexico
Deal found 5/9![Aeromexico logo]()
$1,146
This KAYAK deal was found by Cheapflights users on 5/7. 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 6/286:40 am
PDX
- EZE
2 stops24h 50m
LATAM Airlines
Mon 9/148:10 pm
EZE
- PDX
1 stop18h 27m
LATAM Airlines
Deal found 5/7![LATAM Airlines logo]()
$1,166
This KAYAK deal was found by Cheapflights users on 5/7. 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 6/2810:53 am
PDX
- AEP
2 stops23h 57m
Multiple Airlines
Mon 9/143:45 pm
AEP
- PDX
2 stops25h 40m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,166
This KAYAK deal was found by Cheapflights users on 5/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2810:53 am
PDX
- AEP
2 stops27h 32m
LATAM Airlines
Mon 9/145:35 pm
AEP
- PDX
2 stops22h 38m
LATAM Airlines
Deal found 5/9![LATAM Airlines logo]()
$1,329
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 May 11, 2026.
Search for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Fri 7/36:19 pm
PDX
- EZE
3 stops28h 11m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Sat 7/2510:59 pm
PDX
- AEP
3 stops54h 32m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$587
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Sat 7/2510:59 pm
PDX
- EZE
3 stops46h 09m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$607
This Air Canada deal was found by Cheapflights users on 5/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:45 pm
PDX
- EZE
3 stops62h 45m
Air Canada
Deal found 5/10![Air Canada logo]()
$632
This Avianca deal was found by Cheapflights users on 5/9. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:15 am
PDX
- EZE
2 stops18h 25m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$766
This FlightHub deal was found by Cheapflights users on 5/7. 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 6/289:27 pm
PDX
- EZE
2 stops28h 43m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$833
This Ovago deal was found by Cheapflights users on 5/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:45 am
PDX
- EZE
2 stops27h 36m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$846
This American Airlines deal was found by Cheapflights users on 5/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:28 pm
PDX
- EZE
2 stops22h 47m
American Airlines
Deal found 5/11![American Airlines logo]()
$853
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:35 am
PDX
- EZE
3 stops43h 25m
United Airlines
Deal found 5/11![United Airlines logo]()
$859
This oojo deal was found by Cheapflights users on 5/8. 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 6/289:27 pm
PDX
- AEP
2 stops30h 13m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$900
This LATAM Airlines deal was found by Cheapflights users on 5/10. 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.
Sun 6/2811:40 am
PDX
- AEP
2 stops26h 45m
LATAM Airlines
Deal found 5/10![LATAM Airlines logo]()
$908
This SmartFares deal was found by Cheapflights users on 5/8. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:53 am
PDX
- AEP
2 stops27h 37m
LATAM Airlines
Deal found 5/8![LATAM Airlines logo]()
$926
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 May 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $967 (United Airlines) |
One-way from | $501 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $1,243 |
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 May 11, 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 - EZE
PDXEZE
Portland
Tue 7/21
10:40 pm-8:00 am
2 stops29h 20m
Buenos Aires Ministro Pistarini
Wed 7/29
9:00 pm-9:15 pm
2 stops28h 15m
$971
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Fri 7/17
10:40 pm-8:00 am
2 stops29h 20m
Buenos Aires Ministro Pistarini
Wed 7/29
9:00 pm-9:15 pm
2 stops28h 15m
$1,031
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Sat 7/18
11:40 pm-8:00 am
2 stops28h 20m
Buenos Aires Ministro Pistarini
Mon 7/27
9:00 pm-4:47 pm
2 stops23h 47m
$1,031
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Fri 6/5
7:13 am-8:00 am
1 stop20h 47m
Buenos Aires Ministro Pistarini
Fri 6/12
9:00 pm-11:56 am
1 stop18h 56m
$1,087
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Mon 7/20
6:33 am-8:30 am
2 stops21h 57m
Buenos Aires Jorge Newbery
Thu 7/30
3:45 pm-12:20 pm
2 stops24h 35m
$1,149
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 9/8
10:10 am-2:30 pm
3 stops24h 20m
Buenos Aires Ministro Pistarini
Wed 9/30
4:35 pm-9:31 am
3 stops44h 56m
$1,169
Quickest round-trip
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 9/22
1:04 pm-8:00 am
1 stop14h 56m
Buenos Aires Ministro Pistarini
Mon 9/28
9:00 pm-12:00 pm
1 stop19h 00m
$1,247
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Mon 9/28
6:56 am-8:00 am
1 stop21h 04m
Buenos Aires Ministro Pistarini
Thu 10/1
9:00 pm-12:00 pm
1 stop19h 00m
$1,247
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Mon 8/17
9:00 am-8:00 am
2 stops19h 00m
Buenos Aires Ministro Pistarini
Mon 8/24
9:00 pm-6:19 pm
3 stops25h 19m
$1,251
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Mon 8/17
6:20 am-7:40 am
2 stops21h 20m
Buenos Aires Jorge Newbery
Mon 8/24
8:05 pm-12:20 pm
2 stops20h 15m
$1,289
Showing 1-10 of 27 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 May.
| 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, July is the cheapest month in which you can book a flight from Portland to Buenos Aires (average of $248). Flying from Portland to Buenos Aires in June is currently the most expensive (average of $1,286). 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 May 11, 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.
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
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.
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
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Complete your trip
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Alternative routes for Portland to Buenos Aires
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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 May 11, 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 May 11, 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 May 11, 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 May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$826 | Average$1,338 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,339 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,152 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,182 | Average$1,374 | FlexibilityNo cancel fee | On-time81% |