$427+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Apr 18 — Apr 251
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 March 19, 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 March 19, 2026.
This KAYAK deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/192:06 pm
PDX
- EZE
1 stop15h 39m
LATAM Airlines
Thu 5/288:10 pm
EZE
- PDX
2 stops20h 26m
LATAM Airlines
Deal found 3/16![LATAM Airlines logo]()
$1,033
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/192:06 pm
PDX
- EZE
1 stop15h 39m
Delta
Thu 5/288:10 pm
EZE
- PDX
1 stop20h 44m
Delta
Deal found 3/16![Delta logo]()
$1,037
This United Airlines deal was found by Cheapflights users on 3/19. 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 5/125:30 am
PDX
- EZE
3 stops22h 30m
United Airlines
Tue 5/269:00 pm
EZE
- PDX
2 stops24h 44m
United Airlines
Deal found 3/19![United Airlines logo]()
$1,041
This KAYAK deal was found by Cheapflights users on 3/19. 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 5/122:06 pm
PDX
- EZE
1 stop15h 39m
LATAM Airlines
Mon 5/258:10 pm
EZE
- PDX
1 stop17h 56m
LATAM Airlines
Deal found 3/19![LATAM Airlines logo]()
$1,079
This KAYAK deal was found by Cheapflights users on 3/19. 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 5/207:00 am
PDX
- AEP
2 stops31h 25m
LATAM Airlines
Thu 5/289:25 am
AEP
- PDX
2 stops28h 46m
LATAM Airlines
Deal found 3/19![LATAM Airlines logo]()
$1,079
This LATAM Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:16 am
PDX
- EZE
1 stop18h 29m
LATAM Airlines
Mon 5/258:10 pm
EZE
- PDX
1 stop20h 44m
LATAM Airlines
Deal found 3/19![LATAM Airlines logo]()
$1,087
This KAYAK deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:00 am
PDX
- EZE
2 stops21h 30m
LATAM Airlines
Mon 8/317:21 pm
EZE
- PDX
2 stops20h 52m
LATAM Airlines
Deal found 3/17![LATAM Airlines logo]()
$1,089
This Rumbo deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:51 am
PDX
- AEP
2 stops27h 49m
LATAM Airlines
Mon 5/1810:30 pm
AEP
- PDX
2 stops42h 06m
LATAM Airlines
Deal found 3/15![LATAM Airlines logo]()
$1,090
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:30 am
PDX
- EZE
3 stops22h 30m
United Airlines
Thu 5/289:00 pm
EZE
- PDX
2 stops25h 47m
United Airlines
Deal found 3/16![United Airlines logo]()
$1,091
This LATAM Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:00 am
PDX
- AEP
2 stops25h 00m
LATAM Airlines
Mon 11/308:05 pm
AEP
- PDX
2 stops43h 51m
LATAM Airlines
Deal found 3/16![LATAM Airlines logo]()
$1,091
This KAYAK deal was found by Cheapflights users on 3/19. 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 5/109:39 pm
PDX
- EZE
1 stop32h 06m
LATAM Airlines
Mon 5/258:10 pm
EZE
- PDX
1 stop17h 56m
LATAM Airlines
Deal found 3/19![LATAM Airlines logo]()
$1,102
This KAYAK deal was found by Cheapflights users on 3/19. 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 5/186:50 am
PDX
- AEP
2 stops34h 40m
LATAM Airlines
Tue 5/263:45 pm
AEP
- PDX
2 stops30h 53m
LATAM Airlines
Deal found 3/19![LATAM Airlines logo]()
$1,104
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 March 19, 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 March 19, 2026.
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/192:06 pm
PDX
- EZE
1 stop15h 39m
Delta
Thu 5/288:10 pm
EZE
- PDX
1 stop20h 44m
Delta
Deal found 3/16![Delta logo]()
$1,037
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:00 am
PDX
- AEP
2 stops27h 50m
Multiple Airlines
Thu 5/286:20 pm
AEP
- PDX
2 stops22h 47m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$1,105
This KAYAK deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
PDX
- AEP
2 stops22h 00m
LATAM Airlines
Sun 9/138:05 pm
AEP
- PDX
2 stops21h 01m
LATAM Airlines
Deal found 3/18![LATAM Airlines logo]()
$1,189
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/211:59 pm
PDX
- EZE
1 stop28h 01m
United Airlines
Tue 9/19:00 pm
EZE
- PDX
2 stops25h 47m
United Airlines
Deal found 3/18![United Airlines logo]()
$1,216
This Delta deal was found by Cheapflights users on 3/19. 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 5/171:35 pm
PDX
- AEP
2 stops42h 25m
Delta
Mon 5/253:45 pm
AEP
- PDX
2 stops22h 21m
Delta
Deal found 3/19![Delta logo]()
$1,227
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:30 am
PDX
- EZE
3 stops22h 30m
United Airlines
Fri 5/299:00 pm
EZE
- PDX
2 stops28h 15m
United Airlines
Deal found 3/16![United Airlines logo]()
$1,236
This KAYAK deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:30 am
PDX
- AEP
2 stops21h 10m
LATAM Airlines
Wed 7/153:45 pm
AEP
- PDX
2 stops25h 29m
LATAM Airlines
Deal found 3/14![LATAM Airlines logo]()
$1,289
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:59 pm
PDX
- EZE
1 stop28h 01m
United Airlines
Tue 9/19:00 pm
EZE
- PDX
2 stops25h 47m
United Airlines
Deal found 3/14![United Airlines logo]()
$1,241
This Delta deal was found by Cheapflights users on 3/19. 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.
Fri 5/225:18 pm
PDX
- AEP
2 stops34h 22m
Delta
Sun 5/316:20 pm
AEP
- PDX
2 stops45h 26m
Delta
Deal found 3/19![Delta logo]()
$1,257
This KAYAK deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:18 pm
PDX
- AEP
2 stops21h 12m
LATAM Airlines
Fri 5/298:05 pm
AEP
- PDX
2 stops20h 31m
LATAM Airlines
Deal found 3/16![LATAM Airlines logo]()
$1,329
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/11:02 pm
PDX
- EZE
1 stop14h 58m
United Airlines
Mon 6/89:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 3/14![United Airlines logo]()
$1,297
This Delta deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:18 pm
PDX
- AEP
2 stops18h 42m
Delta
Tue 6/93:45 pm
AEP
- PDX
2 stops22h 59m
Delta
Deal found 3/14![Delta logo]()
$1,297
This KAYAK deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:21 am
PDX
- AEP
2 stops30h 09m
LATAM Airlines
Sun 6/78:05 pm
AEP
- PDX
2 stops20h 08m
LATAM Airlines
Deal found 3/14![LATAM Airlines logo]()
$1,329
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:02 pm
PDX
- EZE
1 stop14h 58m
United Airlines
Tue 6/99:00 pm
EZE
- PDX
1 stop18h 56m
United Airlines
Deal found 3/14![United Airlines logo]()
$1,297
This Delta deal was found by Cheapflights users on 3/19. 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 5/208:20 pm
PDX
- AEP
2 stops33h 20m
Delta
Sun 5/316:20 pm
AEP
- PDX
2 stops45h 26m
Delta
Deal found 3/19![Delta logo]()
$1,306
This Delta deal was found by Cheapflights users on 3/19. 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 5/1911:03 pm
PDX
- AEP
2 stops52h 37m
Delta
Sun 5/316:20 pm
AEP
- PDX
2 stops45h 26m
Delta
Deal found 3/19![Delta logo]()
$1,316
This Delta deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:39 pm
PDX
- EZE
1 stop32h 06m
Delta
Tue 6/91:10 pm
EZE
- PDX
2 stops28h 04m
Delta
Deal found 3/14![Delta logo]()
$1,319
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:03 pm
PDX
- AEP
2 stops34h 57m
Delta
Sun 5/316:20 pm
AEP
- PDX
2 stops30h 40m
Delta
Deal found 3/15![Delta logo]()
$1,354
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated March 19, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated March 19, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:15 pm
PDX
- EZE
3 stops30h 45m
Multiple Airlines
Fri 4/244:50 pm
EZE
- PDX
3 stops32h 06m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$1,145
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
PDX
- EZE
1 stop17h 30m
Multiple Airlines
Thu 4/2311:00 am
EZE
- PDX
2 stops37h 45m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$1,250
This Gotogate deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/89:50 am
PDX
- EZE
3 stops24h 40m
Air Canada
Thu 4/234:35 pm
EZE
- PDX
3 stops53h 55m
Air Canada
Deal found 3/16![Air Canada logo]()
$1,385
This Gurufare deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:30 am
PDX
- AEP
2 stops21h 10m
LATAM Airlines
Thu 4/163:45 pm
AEP
- PDX
2 stops22h 56m
LATAM Airlines
Deal found 3/16![LATAM Airlines logo]()
$1,487
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
PDX
- EZE
1 stop32h 15m
Multiple Airlines
Thu 4/2311:00 am
EZE
- PDX
2 stops37h 45m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$1,310
This Mytrip deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Thu 4/234:15 am
AEP
- PDX
3 stops32h 55m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$1,312
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
PDX
- EZE
1 stop21h 00m
United Airlines
Thu 4/239:00 pm
EZE
- PDX
1 stop19h 34m
United Airlines
Deal found 3/18![United Airlines logo]()
$1,397
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:00 am
PDX
- EZE
1 stop32h 15m
Multiple Airlines
Fri 4/242:57 pm
EZE
- PDX
2 stops33h 16m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$1,411
This FlightHub deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:45 am
PDX
- AEP
2 stops20h 55m
LATAM Airlines
Fri 5/17:20 pm
AEP
- PDX
2 stops20h 48m
LATAM Airlines
Deal found 3/15![LATAM Airlines logo]()
$1,460
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:00 am
PDX
- EZE
1 stop21h 00m
United Airlines
Thu 5/79:00 pm
EZE
- PDX
1 stop19h 43m
United Airlines
Deal found 3/15![United Airlines logo]()
$1,372
This Mytrip deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Thu 5/77:00 am
AEP
- PDX
3 stops34h 50m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$1,390
This LATAM Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:51 am
PDX
- AEP
2 stops24h 09m
LATAM Airlines
Thu 5/72:55 pm
AEP
- PDX
2 stops23h 11m
LATAM Airlines
Deal found 3/15![LATAM Airlines logo]()
$1,477
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 March 19, 2026.
Search for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated March 19, 2026.
This Mytrip deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:15 pm
PDX
- EZE
3 stops30h 45m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:48 pm
PDX
- EZE
3 stops40h 12m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$441
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:30 am
PDX
- EZE
3 stops27h 45m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$454
This eDestinos deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1311:15 pm
PDX
- EZE
3 stops48h 30m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$509
This Mytrip deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/114:50 pm
PDX
- EZE
3 stops29h 55m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$516
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:35 pm
PDX
- EZE
3 stops39h 45m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:19 pm
PDX
- EZE
3 stops35h 57m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$530
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:39 pm
PDX
- EZE
3 stops50h 06m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$538
This Ovago deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:00 am
PDX
- AEP
2 stops21h 30m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$858
This oojo deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:00 am
PDX
- AEP
2 stops29h 00m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$871
This SmartFares deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:30 am
PDX
- AEP
2 stops21h 10m
LATAM Airlines
Deal found 3/16![LATAM Airlines logo]()
$884
This FlightHub deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:45 am
PDX
- AEP
2 stops20h 55m
LATAM Airlines
Deal found 3/17![LATAM Airlines logo]()
$896
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 March 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,033 (KAYAK) |
One-way from | $427 (Mytrip) |
Popular in | June |
Cheapest in | February |
Average price | $1,281 |
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 March 19, 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 5/19
2:06 pm-9:45 am
1 stop15h 39m
Buenos Aires Ministro Pistarini
Thu 5/28
8:10 pm-12:54 pm
1 stop20h 44m
$1,037
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Tue 5/19
7:00 am-2:50 pm
2 stops27h 50m
Buenos Aires Jorge Newbery
Thu 5/28
6:20 pm-1:07 pm
2 stops22h 47m
$1,105
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Thu 8/27
6:30 am-8:30 am
2 stops22h 00m
Buenos Aires Jorge Newbery
Sun 9/13
8:05 pm-1:06 pm
2 stops21h 01m
$1,189
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Sun 8/2
11:59 pm-8:00 am
1 stop28h 01m
Buenos Aires Ministro Pistarini
Tue 9/1
9:00 pm-6:47 pm
2 stops25h 47m
$1,216
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Sun 5/17
1:35 pm-12:00 pm
2 stops42h 25m
Buenos Aires Jorge Newbery
Mon 5/25
3:45 pm-10:06 am
2 stops22h 21m
$1,227
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 5/19
5:30 am-8:00 am
3 stops22h 30m
Buenos Aires Ministro Pistarini
Fri 5/29
9:00 pm-9:15 pm
2 stops28h 15m
$1,236
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Mon 8/3
11:59 pm-8:00 am
1 stop28h 01m
Buenos Aires Ministro Pistarini
Tue 9/1
9:00 pm-6:47 pm
2 stops25h 47m
$1,241
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Fri 5/22
5:18 pm-7:40 am
2 stops34h 22m
Buenos Aires Jorge Newbery
Sun 5/31
6:20 pm-11:46 am
2 stops45h 26m
$1,257
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Wed 7/1
6:30 am-7:40 am
2 stops21h 10m
Buenos Aires Jorge Newbery
Wed 7/15
3:45 pm-1:14 pm
2 stops25h 29m
$1,289
Quickest round-trip
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Mon 6/1
1:02 pm-8:00 am
1 stop14h 58m
Buenos Aires Ministro Pistarini
Mon 6/8
9:00 pm-11:56 am
1 stop18h 56m
$1,297
Showing 1-10 of 29 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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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, 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 June is currently the most expensive (average of $1,595). 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 March 19, 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.
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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
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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 March 19, 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 March 19, 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 March 19, 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 March 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$826 | Average$1,306 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$971 | Average$1,214 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,081 | Average$1,339 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,165 | Average$1,296 | FlexibilityNo cancel fee | On-time81% |