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$456+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Buenos Aires are usually found in August or September, booked 78 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap 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 July 3, 2025.

Round-trip from

$1,049
(Trip.com)

One-way from

$456
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,277
From Portland to Buenos Aires (BUE)
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One-way flight from Portland to Buenos Aires (BUE)
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Highest demand for flights based on searches. 4% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 3, 2025.

This Trip.com deal was found by Cheapflights users on 7/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2110:30 amPDX - EZE
2 stops21h 27mMultiple Airlines
Wed 9/37:13 pmEZE - PDX
2 stops25h 17mMultiple Airlines
Deal found 7/1$1,049
This Delta deal was found by Cheapflights users on 7/3. 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 12/86:04 amPDX - EZE
1 stop21h 56mDelta
Mon 12/158:55 pmEZE - PDX
1 stop27h 13mDelta
Deal found 7/3$1,116
This Justfly.com deal was found by Cheapflights users on 7/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:01 pmPDX - AEP
2 stops21h 34mLATAM Airlines
Tue 11/46:20 pmAEP - PDX
2 stops22h 33mLATAM Airlines
Deal found 7/3$1,120
This United Airlines deal was found by Cheapflights users on 7/1. 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 10/17:02 amPDX - EZE
1 stop20h 58mUnited Airlines
Tue 11/411:55 pmEZE - PDX
2 stops23h 41mUnited Airlines
Deal found 7/1$1,125
This LATAM Airlines deal was found by Cheapflights users on 7/3. 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 12/89:45 pmPDX - EZE
2 stops27h 35mLATAM Airlines
Tue 12/167:45 amEZE - PDX
3 stops40h 23mLATAM Airlines
Deal found 7/3$1,128
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 12/107:59 amPDX - EZE
1 stop20h 11mAmerican Airlines
Tue 12/1610:30 pmEZE - PDX
1 stop18h 43mAmerican Airlines
Deal found 7/2$1,206
This Copa Airlines deal was found by Cheapflights users on 7/3. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:02 pmPDX - EZE
2 stops28h 56mCopa Airlines
Sat 11/82:15 amEZE - PDX
2 stops25h 41mCopa Airlines
Deal found 7/3$1,208
This Mytrip deal was found by Cheapflights users on 7/1. 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 9/97:40 pmPDX - AEP
3 stops34h 00mMultiple Airlines
Tue 9/303:40 pmAEP - PDX
3 stops31h 06mMultiple Airlines
Deal found 7/1$1,318

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 July 3, 2025.
Use the filters below to find and compare flights from Portland to Buenos Aires that are best for you.

Fly from

Portland

Fly to

Buenos Aires

Route

Depart

Return

Price

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 8/21

10:30 am-11:57 am

2 stops21h 27m

Buenos Aires Ministro Pistarini

Wed 9/3

7:13 pm-4:30 pm

2 stops25h 17m

$1,049

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 12/8

6:04 am-9:00 am

1 stop21h 56m

Buenos Aires Ministro Pistarini

Mon 12/15

8:55 pm-7:08 pm

1 stop27h 13m

$1,116

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 10/1

5:01 pm-6:35 pm

2 stops21h 34m

Buenos Aires Jorge Newbery

Tue 11/4

6:20 pm-11:53 am

2 stops22h 33m

$1,120

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Wed 10/1

7:02 am-8:00 am

1 stop20h 58m

Buenos Aires Ministro Pistarini

Tue 11/4

11:55 pm-6:36 pm

2 stops23h 41m

$1,125

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 12/8

9:45 pm-6:20 am

2 stops27h 35m

Buenos Aires Ministro Pistarini

Tue 12/16

7:45 am-7:08 pm

3 stops40h 23m

$1,128

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Wed 12/10

7:59 am-9:10 am

1 stop20h 11m

Buenos Aires Ministro Pistarini

Tue 12/16

10:30 pm-12:13 pm

1 stop18h 43m

$1,206

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sat 11/1

4:02 pm-12:58 am

2 stops28h 56m

Buenos Aires Ministro Pistarini

Sat 11/8

2:15 am-10:56 pm

2 stops25h 41m

$1,208

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 9/9

7:40 pm-9:40 am

3 stops34h 00m

Buenos Aires Jorge Newbery

Tue 9/30

3:40 pm-6:46 pm

3 stops31h 06m

$1,318

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sat 11/1

1:24 pm-2:50 am

2 stops57h 26m

$456

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Thu 10/16

6:05 am-4:05 pm

3 stops30h 00m

$575

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 16 results
1
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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

How far ahead should I book a flight from Portland to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Buenos Aires. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Portland to Buenos Aires, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $795). Flying from Portland to Buenos Aires in December is currently the most expensive (average of $1,260). 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.

What is the cheapest time of day to fly from PDX to BUE?

Find hourly flight availability from Portland to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

It’s typically best to fly out from Portland to Buenos Aires in the afternoon. Doing so could potentially save you 23% on the flight price compared to flying at noon, which is usually more expensive.

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 July 3, 2025.
Peruse reviews from past customers who have flown with Delta, LATAM Airlines, and Copa 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.
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,805 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Copa Airlines
7.5
Good
1,467 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    Delta, at $1,116, was found to be the cheapest airline from Portland to Buenos Aires.Alternate airlines to your destination round-trip include LATAM Airlines and United Airlines. Delta is 18% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Portland to Buenos Aires one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $626. Delta flights start at $758 while deals on LATAM Airlines start at $758 one-way.

  • 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, April is the cheapest month in which you can book a flight from Portland to Buenos Aires (average of $795). Flying from Portland to Buenos Aires in December is currently the most expensive (average of $1,260). 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

Browse thousands of different options on Cheapflights for your next trip

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,060Average$1,314FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,113Average$1,260FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$1,123Average$1,415FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$1,125Average$1,392FlexibilityNo cancel feeOn-time69%

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