$393+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Jun 15 — Jun 221
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 16, 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 16, 2026.
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:15 pm
PDX
- EZE
3 stops30h 01m
Multiple Airlines
Thu 10/811:00 am
EZE
- PDX
3 stops30h 50m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,067
This Mytrip deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:15 pm
PDX
- EZE
3 stops30h 01m
Multiple Airlines
Tue 10/69:15 am
EZE
- PDX
3 stops32h 35m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,109
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 9/81:00 pm
PDX
- EZE
2 stops28h 25m
Aeromexico
Wed 9/3011:25 pm
EZE
- PDX
2 stops26h 57m
Aeromexico
Deal found 5/11![Aeromexico logo]()
$1,130
This oojo deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:00 pm
PDX
- EZE
2 stops28h 25m
Aeromexico
Tue 10/611:25 pm
EZE
- PDX
2 stops27h 01m
Aeromexico
Deal found 5/13![Aeromexico logo]()
$1,146
This Ovago deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:05 am
PDX
- EZE
2 stops24h 05m
Copa Airlines
Wed 12/94:45 pm
EZE
- PDX
2 stops45h 40m
Copa Airlines
Deal found 5/12![Copa Airlines logo]()
$1,161
This Air Canada deal was found by Cheapflights users on 5/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:30 pm
PDX
- EZE
3 stops43h 00m
Air Canada
Mon 9/284:35 pm
EZE
- PDX
3 stops44h 56m
Air Canada
Deal found 5/14![Air Canada logo]()
$1,168
This oojo deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:00 am
PDX
- EZE
2 stops31h 25m
Aeromexico
Sun 10/1111:25 pm
EZE
- PDX
2 stops24h 03m
Aeromexico
Deal found 5/13![Aeromexico logo]()
$1,184
This Expedia deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:37 pm
PDX
- EZE
2 stops47h 48m
Aeromexico
Mon 7/611:25 pm
EZE
- PDX
2 stops21h 09m
Aeromexico
Deal found 5/15![Aeromexico logo]()
$1,196
This KAYAK deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:40 am
PDX
- AEP
2 stops23h 20m
LATAM Airlines
Wed 12/92:55 pm
AEP
- PDX
2 stops25h 01m
LATAM Airlines
Deal found 5/12![LATAM Airlines logo]()
$1,239
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:00 pm
PDX
- AEP
2 stops22h 00m
Delta
Wed 12/98:05 pm
AEP
- PDX
2 stops25h 08m
Delta
Deal found 5/12![Delta logo]()
$1,247
This BusinessClass deal was found by Cheapflights users on 5/14. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:27 pm
PDX
- AEP
2 stops30h 13m
Multiple Airlines
Sun 8/235:35 pm
AEP
- PDX
2 stops23h 50m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,257
This Ovago deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:40 am
PDX
- AEP
2 stops24h 20m
Multiple Airlines
Mon 11/308:05 pm
AEP
- PDX
2 stops29h 45m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,269
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 16, 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 16, 2026.
This Delta deal was found by Cheapflights users on 5/14. 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.
Thu 5/289:20 am
PDX
- EZE
2 stops20h 25m
Delta
Thu 6/1110:40 pm
EZE
- PDX
2 stops24h 09m
Delta
Deal found 5/14![Delta logo]()
$1,251
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:03 pm
PDX
- EZE
2 stops33h 57m
United Airlines
Tue 9/19:00 pm
EZE
- PDX
2 stops30h 22m
United Airlines
Deal found 5/13![United Airlines logo]()
$1,251
This BusinessClass deal was found by Cheapflights users on 5/14. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:27 pm
PDX
- AEP
2 stops30h 13m
Multiple Airlines
Sun 8/235:35 pm
AEP
- PDX
2 stops23h 50m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,257
This KAYAK deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 11/105:05 pm
AEP
- PDX
2 stops24h 13m
LATAM Airlines
Deal found 5/12![LATAM Airlines logo]()
$1,271
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.
Mon 9/285:00 am
PDX
- EZE
2 stops23h 00m
United Airlines
Thu 10/19:00 pm
EZE
- PDX
2 stops18h 55m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,251
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 BusinessClass deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:40 am
PDX
- AEP
2 stops28h 00m
LATAM Airlines
Sun 10/113:45 pm
AEP
- PDX
2 stops24h 33m
LATAM Airlines
Deal found 5/12![LATAM Airlines logo]()
$1,362
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 9/227:13 am
PDX
- EZE
1 stop20h 47m
United Airlines
Mon 9/289:00 pm
EZE
- PDX
2 stops18h 55m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,251
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.
Thu 10/19:30 pm
PDX
- AEP
2 stops30h 10m
Multiple Airlines
Thu 10/83:45 pm
AEP
- PDX
2 stops23h 11m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$1,307
This Mytrip deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Tue 11/108:40 am
AEP
- PDX
3 stops35h 00m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,385
This KAYAK deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:40 am
PDX
- AEP
2 stops21h 00m
Multiple Airlines
Sat 10/243:45 pm
AEP
- PDX
2 stops25h 50m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,397
This Ovago deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago 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
Mon 9/143:45 pm
AEP
- PDX
2 stops25h 40m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,397
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated May 16, 2026 and is based on user searches.
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.
Mon 5/2511:59 am
PDX
- EZE
1 stop15h 06m
American Airlines
Mon 6/810:05 pm
EZE
- PDX
1 stop18h 39m
American Airlines
Deal found 5/11![American Airlines logo]()
$1,201
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/252:06 pm
PDX
- EZE
1 stop15h 39m
Delta
Mon 6/88:10 pm
EZE
- PDX
1 stop18h 20m
Delta
Deal found 5/11![Delta logo]()
$1,262
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:45 pm
PDX
- EZE
3 stops38h 45m
Air Canada
Mon 6/84:35 pm
EZE
- PDX
3 stops44h 55m
Air Canada
Deal found 5/11![Air Canada logo]()
$1,311
This Delta deal was found by Cheapflights users on 5/14. 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.
Thu 5/289:20 am
PDX
- EZE
2 stops20h 25m
Delta
Thu 6/1110:40 pm
EZE
- PDX
2 stops24h 09m
Delta
Deal found 5/14![Delta logo]()
$1,251
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:15 pm
PDX
- EZE
3 stops30h 01m
Multiple Airlines
Thu 6/187:45 am
EZE
- PDX
3 stops34h 05m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,304
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:15 pm
PDX
- AEP
3 stops26h 25m
Multiple Airlines
Thu 6/185:35 pm
AEP
- PDX
3 stops31h 24m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,327
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.
Mon 6/151:02 pm
PDX
- EZE
1 stop14h 58m
United Airlines
Tue 6/309:00 pm
EZE
- PDX
2 stops22h 13m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,326
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.
Mon 6/156:30 am
PDX
- AEP
2 stops21h 10m
LATAM Airlines
Tue 6/308:05 pm
AEP
- PDX
2 stops20h 20m
LATAM Airlines
Deal found 5/11![LATAM Airlines logo]()
$1,389
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/258:28 pm
PDX
- EZE
2 stops44h 57m
Aeromexico
Thu 7/211:25 pm
EZE
- PDX
2 stops45h 17m
Aeromexico
Deal found 5/11![Aeromexico logo]()
$1,284
This FlightHub deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub 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 5/13![Aeromexico logo]()
$1,231
This Ovago deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago 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
Mon 9/143:45 pm
AEP
- PDX
2 stops25h 40m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,397
This Expedia deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:37 pm
PDX
- EZE
2 stops47h 48m
Aeromexico
Mon 7/611:25 pm
EZE
- PDX
2 stops21h 09m
Aeromexico
Deal found 5/15![Aeromexico logo]()
$1,196
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 16, 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 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:50 pm
PDX
- EZE
2 stops32h 10m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:35 pm
PDX
- EZE
3 stops27h 33m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:35 pm
PDX
- AEP
3 stops36h 35m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:30 pm
PDX
- AEP
3 stops31h 25m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:50 pm
PDX
- AEP
3 stops38h 20m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:50 pm
PDX
- AEP
3 stops39h 05m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm
PDX
- EZE
2 stops32h 33m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$504
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:30 pm
PDX
- EZE
3 stops33h 40m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:30 pm
PDX
- EZE
3 stops29h 35m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:22 pm
PDX
- EZE
3 stops33h 38m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$552
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:30 pm
PDX
- AEP
3 stops30h 10m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$556
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:30 pm
PDX
- EZE
2 stops25h 30m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$557
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 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,067 (Mytrip) |
One-way from | $393 (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 16, 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
Thu 5/28
9:20 am-9:45 am
2 stops20h 25m
Buenos Aires Ministro Pistarini
Thu 6/11
10:40 pm-6:49 pm
2 stops24h 09m
$1,251
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Mon 8/3
6:03 pm-8:00 am
2 stops33h 57m
Buenos Aires Ministro Pistarini
Tue 9/1
9:00 pm-11:22 pm
2 stops30h 22m
$1,251
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Mon 9/28
5:00 am-8:00 am
2 stops23h 00m
Buenos Aires Ministro Pistarini
Thu 10/1
9:00 pm-11:55 am
2 stops18h 55m
$1,251
Quickest round-trip
PortlandBuenos Aires
PDX - EZE
PDXEZE
Portland
Tue 9/22
7:13 am-8:00 am
1 stop20h 47m
Buenos Aires Ministro Pistarini
Mon 9/28
9:00 pm-11:55 am
2 stops18h 55m
$1,251
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Sun 8/16
9:27 pm-7:40 am
2 stops30h 13m
Buenos Aires Jorge Newbery
Sun 8/23
5:35 pm-1:25 pm
2 stops23h 50m
$1,257
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
5:05 pm-12:18 pm
2 stops24h 13m
$1,271
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Sat 10/3
6:40 am-8:30 am
2 stops21h 50m
Buenos Aires Jorge Newbery
Sun 10/11
10:30 pm-9:31 am
3 stops39h 01m
$1,303
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Thu 10/1
9:30 pm-7:40 am
2 stops30h 10m
Buenos Aires Jorge Newbery
Thu 10/8
3:45 pm-10:56 am
2 stops23h 11m
$1,307
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Sat 10/3
11:40 am-7:40 pm
2 stops28h 00m
Buenos Aires Jorge Newbery
Sun 10/11
3:45 pm-12:18 pm
2 stops24h 33m
$1,362
PortlandBuenos Aires
PDX - AEP
PDXAEP
Portland
Sat 10/31
11:15 pm-5:40 am
3 stops26h 25m
Buenos Aires Jorge Newbery
Tue 11/10
8:40 am-2:40 pm
3 stops35h 00m
$1,385
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 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 May 16, 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
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Portland to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Buenos Aires
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
Complete your trip
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Search flights from Portland to Buenos Aires by cabin class
Find flights from Portland to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Buenos Aires flights
Browse other Portland and Buenos Aires flight options. Last updated on May 16, 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 16, 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 16, 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% |