Buenos Aires

$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
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Cheap flight deals from Portland to Buenos Aires

Cheapest flights from Portland to Buenos Aires
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$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$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$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$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$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$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$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$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$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$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$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$1,269

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
Provider with most accurate pricing for Portland-Buenos Aires (BUE) flight deals.
Provider most trusted by Cheapflights users for Portland-Buenos Aires (BUE) flights.
From Portland to Buenos Aires (BUE)
One-way flight from Portland to Buenos Aires (BUE)
Highest demand for flights based on searches. 4% potential increase in price ($62 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Average for round-trip flights in May 2026

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

Price

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 27 resultsSorted by cheapest first
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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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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

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
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Entertainment

7.8

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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.
  • What airport do you fly from for flights from Portland to Buenos Aires?

    Most people fly from Portland (PDX) if they book a flight from Portland to Buenos Aires. On average, Portland has 0 outbound flights to Buenos Aires per day from 4 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

  • How long is the flight from Portland to Buenos Aires?

    There are many flights that can get you from Portland to Buenos Aires in 20h 25m. Fly via Delta, United Airlines, or LATAM Airlines to get the fastest option. Airlines will cover a distance of 6836 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Portland to Buenos Aires round-trip?

    American Airlines, at $826, was found to be the cheapest airline from Portland to Buenos Aires.Alternate airlines to your destination round-trip include Delta and United Airlines. American Airlines is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Portland to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Portland to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Buenos Aires.

  • Can I find deals for business class flights from Portland to Buenos Aires?

    Yes. Cheapflights offers flight deals from Portland to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

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Alternative routes for Portland to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.

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.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$826Average$1,338FlexibilityNo cancel feeOn-time71%
DeltaCheapest$901Average$1,339FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$951Average$1,152FlexibilityNo cancel feeOn-time69%
LATAM AirlinesCheapest$1,182Average$1,374FlexibilityNo cancel feeOn-time81%

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