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$491+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BUE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$1,160
(Justfly.com)

One-way from

$808
(Ovago)

Popular in

December

Cheapest in

August

Average price

$1,526
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 ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 12/711:55 pmPDX - EZE
2 stops26h 25mUnited Airlines
Mon 12/1510:05 pmEZE - PDX
2 stops25h 00mUnited Airlines
Deal found 6/10$1,116
This LATAM Airlines deal was found by Cheapflights users on 6/11. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:30 pmPDX - EZE
1 stop15h 15mDelta
Thu 9/258:10 pmEZE - PDX
1 stop18h 46mDelta
Deal found 6/11$1,125
This LATAM Airlines deal was found by Cheapflights users on 6/10. 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 12/812:15 pmPDX - AEP
2 stops24h 45mLATAM Airlines
Mon 12/152:55 pmAEP - PDX
2 stops25h 58mLATAM Airlines
Deal found 6/10$1,125
This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/511:32 amPDX - EZE
2 stops20h 15mLATAM Airlines
Wed 9/177:40 amEZE - PDX
2 stops39h 28mLATAM Airlines
Deal found 6/12$1,160
This Mytrip deal was found by Cheapflights users on 6/10. 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 9/147:40 pmPDX - EZE
3 stops62h 50mAir Canada
Wed 9/244:35 pmEZE - PDX
3 stops30h 11mAir Canada
Deal found 6/10$1,197
This Copa Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 8/154:16 pmPDX - EZE
2 stops25h 52mCopa Airlines
Sun 8/242:13 amEZE - PDX
2 stops24h 29mCopa Airlines
Deal found 6/10$1,208
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 9/198:30 amPDX - EZE
2 stops20h 30mAmerican Airlines
Wed 10/88:30 pmEZE - PDX
2 stops20h 58mAmerican Airlines
Deal found 6/11$1,225
This United deal was found by Cheapflights users on 6/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:59 pmPDX - EZE
3 stops24h 51mMultiple Airlines
Sun 8/179:00 pmEZE - PDX
2 stops27h 37mMultiple Airlines
Deal found 6/10$1,303
This LATAM Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 12/105:45 amPDX - AEP
3 stops23h 45mMultiple Airlines
Tue 12/165:10 pmAEP - PDX
2 stops25h 11mMultiple Airlines
Deal found 6/10$1,592

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 June 12, 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

Sun 12/7

11:55 pm-7:20 am

2 stops26h 25m

Buenos Aires Ministro Pistarini

Mon 12/15

10:05 pm-6:05 pm

2 stops25h 00m

$1,116

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 9/18

2:30 pm-9:45 am

1 stop15h 15m

Buenos Aires Ministro Pistarini

Thu 9/25

8:10 pm-10:56 am

1 stop18h 46m

$1,125

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Mon 12/8

12:15 pm-6:00 pm

2 stops24h 45m

Buenos Aires Jorge Newbery

Mon 12/15

2:55 pm-11:53 am

2 stops25h 58m

$1,125

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Fri 9/5

11:32 am-11:47 am

2 stops20h 15m

Buenos Aires Ministro Pistarini

Wed 9/17

7:40 am-7:08 pm

2 stops39h 28m

$1,160

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 9/14

7:40 pm-2:30 pm

3 stops62h 50m

Buenos Aires Ministro Pistarini

Wed 9/24

4:35 pm-6:46 pm

3 stops30h 11m

$1,197

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Fri 8/15

4:16 pm-10:08 pm

2 stops25h 52m

Buenos Aires Ministro Pistarini

Sun 8/24

2:13 am-10:42 pm

2 stops24h 29m

$1,208

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Fri 9/19

8:30 am-9:00 am

2 stops20h 30m

Buenos Aires Ministro Pistarini

Wed 10/8

8:30 pm-1:28 pm

2 stops20h 58m

$1,225

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sat 8/9

11:59 pm-4:50 am

3 stops24h 51m

Buenos Aires Ministro Pistarini

Sun 8/17

9:00 pm-8:37 pm

2 stops27h 37m

$1,303

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 7/15

3:10 pm-4:05 am

3 stops32h 55m

Buenos Aires Jorge Newbery

Tue 7/22

3:40 pm-11:31 am

2 stops23h 51m

$1,636

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 7/21

3:10 pm-12:10 am

3 stops53h 00m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 15 results
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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 9, 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 June 12, 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.

Rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Buenos Aires ranges from 2.0 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. June is typically the driest time to visit Buenos Aires when rainfall is around 2.0 in.

Temperature in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
1,785 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
1,451 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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!
Aeromexico
7.5
Good
1,706 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

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?

    LATAM Airlines, at $1,160, was found to be the cheapest airline from Portland to Buenos Aires.Alternate airlines to your destination round-trip include United Airlines and Delta. LATAM Airlines is 15% 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 LATAM Airlines, which is currently one of the cheapest options available, starting at $808. United Airlines flights start at $813 while deals on Air Canada start at $1,067 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,060Average$1,314FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,113Average$1,248FlexibilityNo 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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