$517+ Cheap flights from Portland (PDX) to Buenos Aires (BUE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Oct 23 — Oct 301
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 September 23, 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 September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:02 pm -
2 stops40h 48m
Wed 12/912:20 pm -
1 stop37h 22m
Deal found 9/23![Multiple Airlines logo]()
$1,029
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:02 pm -
2 stops40h 48m
Thu 12/108:00 am -
1 stop17h 42m
Deal found 9/20![Multiple Airlines logo]()
$1,060
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:17 am -
2 stops40h 03m
Fri 12/48:00 am -
1 stop17h 42m
Deal found 9/20![Multiple Airlines logo]()
$1,076
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:02 pm -
2 stops40h 48m
Tue 12/812:20 pm -
1 stop37h 22m
Deal found 9/20![Multiple Airlines logo]()
$1,080
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:17 am -
2 stops40h 03m
Thu 12/108:00 am -
1 stop17h 42m
Deal found 9/20![Multiple Airlines logo]()
$1,086
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:23 am -
2 stops41h 27m
Thu 12/38:00 am -
1 stop17h 42m
Deal found 9/22![Multiple Airlines logo]()
$1,089
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:17 am -
2 stops40h 03m
Tue 12/812:20 pm -
1 stop37h 22m
Deal found 9/20![Multiple Airlines logo]()
$1,105
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:29 pm -
2 stops34h 21m
Thu 12/38:00 am -
1 stop17h 42m
Deal found 9/22![Multiple Airlines logo]()
$1,112
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:17 am -
2 stops40h 03m
Wed 12/912:20 pm -
1 stop37h 22m
Deal found 9/20![Multiple Airlines logo]()
$1,125
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:29 pm -
2 stops34h 21m
Tue 12/110:45 pm -
1 stop26h 57m
Deal found 9/22![Multiple Airlines logo]()
$1,135
This LATAM Airlines deal was found by Cheapflights users on 9/19. 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.
Tue 11/176:20 am -
2 stops27h 20m
Tue 12/88:05 pm -
2 stops20h 58m
Deal found 9/19![LATAM Airlines logo]()
$1,268
This SmartFares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/161:35 pm -
2 stops21h 25m
Fri 12/48:05 pm -
2 stops21h 27m
Deal found 9/20![Multiple Airlines logo]()
$1,297
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 September 23, 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 September 23, 2026.
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:00 am -
2 stops19h 20m
Wed 12/910:05 pm -
2 stops21h 33m
Deal found 9/23![United Airlines logo]()
$1,180
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:00 am -
1 stop20h 30m
Wed 12/910:30 pm -
1 stop24h 18m
Deal found 9/18![American Airlines logo]()
$1,206
This FlightHub deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/101:00 pm -
2 stops22h 00m
Tue 3/238:05 pm -
2 stops20h 13m
Deal found 9/22![LATAM Airlines logo]()
$1,216
This Mytrip deal was found by Cheapflights users on 9/18. 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.
Fri 12/410:00 am -
3 stops34h 45m
Wed 12/95:20 am -
3 stops33h 06m
Deal found 9/18![Multiple Airlines logo]()
$1,252
This Delta deal was found by Cheapflights users on 9/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/161:05 pm -
2 stops21h 55m
Mon 12/75:35 pm -
2 stops22h 14m
Deal found 9/18![Delta logo]()
$1,268
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/255:15 am -
2 stops23h 05m
Mon 2/811:55 pm -
2 stops23h 44m
Deal found 9/22![United Airlines logo]()
$1,180
This LATAM Airlines deal was found by Cheapflights users on 9/18. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:34 pm -
2 stops19h 56m
Wed 12/95:35 pm -
2 stops23h 28m
Deal found 9/18![Multiple Airlines logo]()
$1,268
This Delta deal was found by Cheapflights users on 9/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/161:05 pm -
2 stops21h 55m
Tue 12/86:20 pm -
2 stops22h 43m
Deal found 9/18![Delta logo]()
$1,268
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2412:51 pm -
1 stop37h 29m
Mon 2/811:55 pm -
1 stop17h 24m
Deal found 9/22![United Airlines logo]()
$1,191
This LATAM Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/266:04 am -
2 stops21h 26m
Mon 2/88:05 pm -
2 stops21h 13m
Deal found 9/22![LATAM Airlines logo]()
$1,318
This Ovago deal was found by Cheapflights users on 9/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:03 am -
2 stops21h 27m
Mon 11/28:05 pm -
3 stops22h 25m
Deal found 9/19![Multiple Airlines logo]()
$1,305
This LATAM Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2411:40 am -
2 stops23h 20m
Mon 2/85:35 pm -
2 stops22h 21m
Deal found 9/22![LATAM Airlines logo]()
$1,318
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/36:04 am -
2 stops20h 36m
Mon 3/85:35 pm -
2 stops22h 21m
Deal found 9/23![Delta logo]()
$1,318
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1012:51 pm -
1 stop15h 29m
Tue 3/239:05 pm -
2 stops25h 26m
Deal found 9/23![United Airlines logo]()
$1,200
This Gotogate deal was found by Cheapflights users on 9/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/266:00 am -
2 stops20h 40m
Tue 2/28:05 pm -
3 stops22h 43m
Deal found 9/18![Multiple Airlines logo]()
$1,330
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/247:10 am -
1 stop19h 10m
Tue 2/911:55 pm -
1 stop17h 24m
Deal found 9/22![United Airlines logo]()
$1,226
This LATAM Airlines deal was found by Cheapflights users on 9/18. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:14 pm -
2 stops18h 46m
Wed 10/213:45 pm -
2 stops24h 26m
Deal found 9/18![LATAM Airlines logo]()
$1,468
This Ovago deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/76:00 am -
2 stops21h 30m
Wed 1/208:05 pm -
3 stops22h 43m
Deal found 9/23![Multiple Airlines logo]()
$1,353
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:00 am -
2 stops21h 20m
Mon 12/711:55 pm -
2 stops26h 20m
Deal found 9/20![United Airlines logo]()
$1,252
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:45 pm -
2 stops28h 35m
Mon 12/2111:55 pm -
2 stops27h 52m
Deal found 9/21![United Airlines logo]()
$1,252
Last-minute flights from Portland to Buenos AiresDiscover last-minute flight deals from Portland to Buenos Aires. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated September 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:35 am -
2 stops20h 10m
Wed 10/218:40 pm -
2 stops23h 46m
Deal found 9/19![American Airlines logo]()
$1,463
This LATAM Airlines deal was found by Cheapflights users on 9/18. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:14 pm -
2 stops18h 46m
Wed 10/213:45 pm -
2 stops24h 26m
Deal found 9/18![LATAM Airlines logo]()
$1,468
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:20 pm -
1 stop15h 25m
Sun 10/253:10 pm -
2 stops23h 32m
Deal found 9/20![Delta logo]()
$1,268
This LATAM Airlines deal was found by Cheapflights users on 9/18. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:20 pm -
1 stop15h 25m
Sun 10/2511:20 am -
2 stops28h 51m
Deal found 9/18![LATAM Airlines logo]()
$1,444
This Mytrip deal was found by Cheapflights users on 9/18. 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.
Sun 10/1811:15 pm -
3 stops29h 00m
Sat 10/241:30 am -
3 stops35h 56m
Deal found 9/18![Multiple Airlines logo]()
$1,458
This LATAM Airlines deal was found by Cheapflights users on 9/19. 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 10/197:05 am -
2 stops21h 25m
Mon 11/28:05 pm -
2 stops21h 06m
Deal found 9/19![LATAM Airlines logo]()
$1,268
This Ovago deal was found by Cheapflights users on 9/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:03 am -
2 stops21h 27m
Mon 11/28:05 pm -
3 stops22h 25m
Deal found 9/19![Multiple Airlines logo]()
$1,305
This Ovago deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:03 am -
2 stops21h 27m
Sun 10/259:45 pm -
2 stops43h 22m
Deal found 9/22![Multiple Airlines logo]()
$1,348
This Travelocity deal was found by Cheapflights users on 9/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:54 am -
2 stops27h 27m
Mon 11/27:35 pm -
2 stops20h 15m
Deal found 9/19![Multiple Airlines logo]()
$1,494
This oojo deal was found by Cheapflights users on 9/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:20 pm -
1 stop15h 25m
Sun 10/2511:20 am -
2 stops28h 51m
Deal found 9/19![LATAM Airlines logo]()
$1,505
This Mytrip deal was found by Cheapflights users on 9/18. 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.
Mon 10/2610:05 am -
3 stops35h 20m
Thu 11/53:40 am -
3 stops34h 46m
Deal found 9/18![Multiple Airlines logo]()
$1,236
This SmartFares deal was found by Cheapflights users on 9/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:03 am -
2 stops31h 27m
Fri 11/65:35 pm -
2 stops25h 15m
Deal found 9/18![Multiple Airlines logo]()
$1,497
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 September 23, 2026.
Search for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/314:35 pm -
3 stops30h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/307:00 am -
2 stops34h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$521
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:38 pm -
3 stops35h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/17:00 am -
2 stops21h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:53 pm -
2 stops27h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:10 pm -
3 stops33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:02 am -
3 stops46h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$561
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/257:00 am -
2 stops22h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$568
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:38 pm -
3 stops35h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$575
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:00 am -
2 stops43h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$607
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:38 pm -
3 stops41h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$615
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:38 pm -
3 stops46h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$663
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 September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,029 (Kiwi.com) |
One-way from | $517 (Kiwi.com) |
Popular in | July |
Cheapest in | June |
Average price | $1,179 |
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 7,457,451 searches. Data last updated September 23, 2026.
Use the filters below to find and compare flights from Portland to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Thu 12/10
7:00 am-7:30 am
2 stops43h 30m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$607
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Sun 1/31
6:00 am-7:25 am
2 stops20h 25m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$664
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Mon 2/1
6:04 am-9:40 am
1 stop22h 36m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$664
Quickest round-trip
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Mon 12/28
7:00 am-7:20 am
1 stop19h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$664
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Mon 9/28
9:51 am-9:45 am
2 stops19h 54m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$664
PortlandBuenos Aires
PDX Portland - AEP Buenos Aires Jorge Newbery
PDXAEP
Portland
Wed 9/30
6:45 am-7:40 am
2 stops20h 55m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$664
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Mon 12/28
7:00 am-7:00 am
3 stops43h 00m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$669
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Sun 1/31
4:05 pm-7:20 am
3 stops34h 15m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$670
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Wed 10/21
12:45 pm-8:00 am
3 stops39h 15m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$670
PortlandBuenos Aires
PDX Portland - EZE Buenos Aires Ministro Pistarini
PDXEZE
Portland
Sun 12/27
10:25 pm-9:50 am
2 stops30h 25m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$670
Showing 1-10 of 38 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Portland with our price prediction graph.
PDX-BUE
PDX-AEP
PDX-EZE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portland to Buenos Aires
PDX-BUE
PDX-AEP
PDX-EZE
What is the cheapest month to book a flight from Portland to Buenos Aires?
Currently, April is the cheapest month in which you can book a flight from Portland to Buenos Aires (average of $1,181). Flying from Portland to Buenos Aires in July is currently the most expensive (average of $1,616). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Portland to Buenos Aires?
Airfare is below average for this route at the moment.
Portland to Buenos Aires flights typically cost between $1,225 and $1,408 in November.The cheapest round-trip price found within the last 5 days was $1,029 on Multiple Airlines (Nov 17-Dec 9).
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 September 23, 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.
Crew
8.5
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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 September 23, 2026.
Complete your trip
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Find flights from Portland to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Buenos Aires flights
Browse other Portland and Buenos Aires flight options. Last updated on September 23, 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 September 23, 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 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$826 | Average$1,481 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,247 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,125 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,182 | Average$1,402 | FlexibilityNo cancel fee | On-time81% |