How long is the flight from Portland to Buenos Aires?

There are many flights that can get you from Portland to Buenos Aires in 19h 20m. 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 $1,060, was found to be the cheapest airline from Portland to Buenos Aires.Alternate airlines to your destination round-trip include Delta and LATAM Airlines. American Airlines is 23% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Portland to Buenos Aires?

Travelers seeking maximum savings on their Portland to Buenos Aires flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What are the most popular airlines that fly from Portland to Buenos Aires?

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Portland to Buenos Aires.

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.

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.

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.

$365+ Flights from Portland to Buenos Aires

Q: 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 $1,266 and $1,439 in October. The cheapest round-trip price found within the last 3 days was $980 on Multiple Airlines (Oct 22-Oct 29).

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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.

Cheapflights Tip: The best prices from Portland to Buenos Aires are usually found in May or October, booked 54 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Portland to Buenos Aires

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$980 (Trip.com)
One-way from	$365 (Kiwi.com)
Popular in	December
Cheapest in	May
Average price	$1,334

Provider with most accurate pricing for Portland-Buenos Aires (BUE) flight deals.

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Provider most trusted by Cheapflights users for Portland-Buenos Aires (BUE) flights.

Search Deals

From Portland to Buenos Aires (BUE)

Search Deals

One-way flight from Portland to Buenos Aires (BUE)

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($62 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in September 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 September 25, 2025.

Wed 10/222:52 pmPDX - EZE

3 stops27h 33mMultiple Airlines

Wed 10/297:50 amEZE - PDX

2 stops31h 45mMultiple Airlines

Deal found 9/24

$980

Mon 11/37:20 amPDX - EZE

2 stops30h 23mMultiple Airlines

Sat 11/157:43 pmEZE - PDX

2 stops20h 52mMultiple Airlines

Deal found 9/23

$1,005

Mon 11/37:20 amPDX - AEP

2 stops26h 20mMultiple Airlines

Sat 11/153:40 pmAEP - PDX

2 stops24h 55mMultiple Airlines

Deal found 9/23

$1,005

Wed 12/107:18 amPDX - EZE

3 stops42h 42mMultiple Airlines

Tue 12/165:10 amEZE - PDX

2 stops44h 40mMultiple Airlines

Deal found 9/24

$1,006

Wed 12/107:18 amPDX - AEP

2 stops43h 12mMultiple Airlines

Tue 12/165:15 pmAEP - PDX

3 stops45h 23mMultiple Airlines

Deal found 9/23

$1,034

Sun 12/710:50 amPDX - EZE

2 stops58h 08mMultiple Airlines

Wed 12/1711:00 amEZE - PDX

1 stop38h 50mMultiple Airlines

Deal found 9/25

$1,050

Sun 11/91:21 pmPDX - AEP

2 stops24h 19mMultiple Airlines

Sun 11/162:55 pmAEP - PDX

2 stops26h 28mMultiple Airlines

Deal found 9/25

$1,052

Wed 10/2212:30 pmPDX - AEP

2 stops23h 35mMultiple Airlines

Wed 10/298:25 pmAEP - PDX

2 stops21h 25mMultiple Airlines

Deal found 9/24

$1,058

Mon 12/89:30 pmPDX - EZE

2 stops27h 50mMultiple Airlines

Wed 12/1711:00 amEZE - PDX

1 stop38h 50mMultiple Airlines

Deal found 9/25

$1,087

Mon 12/89:30 pmPDX - EZE

2 stops27h 50mMultiple Airlines

Tue 12/1611:00 amEZE - PDX

1 stop38h 50mMultiple Airlines

Deal found 9/25

$1,090

Wed 12/107:04 amPDX - EZE

2 stops27h 46mMultiple Airlines

Wed 12/1711:00 amEZE - PDX

1 stop38h 50mMultiple Airlines

Deal found 9/25

$1,100

Sun 12/72:15 pmPDX - EZE

2 stops35h 05mMultiple Airlines

Mon 12/1511:00 amEZE - PDX

1 stop38h 50mMultiple Airlines

Deal found 9/25

$1,101

Best flights from Portland to Buenos Aires
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 25, 2025.

Wed 12/107:18 amPDX - AEP

2 stops43h 12mMultiple Airlines

Tue 12/165:15 pmAEP - PDX

3 stops45h 23mMultiple Airlines

Deal found 9/23

$1,034

Mon 12/87:15 amPDX - EZE

2 stops20h 45mDelta

Mon 12/1511:55 pmEZE - PDX

2 stops21h 05mDelta

Deal found 9/25

$1,116

Mon 12/87:00 amPDX - EZE

1 stop19h 20mUnited Airlines

Wed 12/1710:05 pmEZE - PDX

1 stop20h 15mUnited Airlines

Deal found 9/25

$1,116

Sun 12/710:10 pmPDX - AEP

2 stops28h 45mLATAM Airlines

Tue 12/1611:30 amAEP - PDX

2 stops29h 19mLATAM Airlines

Deal found 9/25

$1,125

Wed 12/1012:55 pmPDX - EZE

1 stop15h 25mUnited Airlines

Wed 12/1711:55 pmEZE - PDX

1 stop24h 48mUnited Airlines

Deal found 9/25

$1,116

Mon 12/811:46 amPDX - AEP

2 stops25h 54mLATAM Airlines

Tue 12/163:40 pmAEP - PDX

2 stops26h 55mLATAM Airlines

Deal found 9/25

$1,125

Wed 12/1010:10 pmPDX - EZE

1 stop28h 10mDelta

Tue 12/168:55 pmEZE - PDX

1 stop18h 46mDelta

Deal found 9/25

$1,170

Wed 12/316:00 amPDX - AEP

2 stops20h 55mLATAM Airlines

Tue 2/1711:30 amAEP - PDX

2 stops28h 35mLATAM Airlines

Deal found 9/22

$1,125

Wed 12/108:30 amPDX - EZE

2 stops19h 50mUnited Airlines

Tue 12/1610:05 pmEZE - PDX

2 stops25h 36mUnited Airlines

Deal found 9/25

$1,170

Sun 11/3012:35 amPDX - EZE

2 stops27h 25mDelta

Fri 1/3010:25 pmEZE - PDX

1 stop28h 10mDelta

Deal found 9/23

$1,170

Wed 12/317:15 amPDX - AEP

2 stops30h 25mLATAM Airlines

Thu 2/195:15 pmAEP - PDX

2 stops22h 50mLATAM Airlines

Deal found 9/22

$1,125

Thu 12/1111:46 amPDX - EZE

1 stop16h 14mDelta

Wed 12/178:55 pmEZE - PDX

1 stop30h 25mDelta

Deal found 9/25

$1,170

Tue 11/47:00 amPDX - EZE

1 stop19h 20mUnited Airlines

Tue 11/2511:55 pmEZE - PDX

2 stops23h 41mUnited Airlines

Deal found 9/23

$1,200

Thu 1/17:15 amPDX - AEP

2 stops30h 25mLATAM Airlines

Wed 2/1811:30 amAEP - PDX

2 stops29h 23mLATAM Airlines

Deal found 9/23

$1,125

Wed 10/2210:50 amPDX - EZE

2 stops17h 10mUnited Airlines

Thu 11/1311:55 pmEZE - PDX

2 stops27h 56mUnited Airlines

Deal found 9/24

$1,205

Tue 12/96:29 amPDX - AEP

3 stops24h 11mLATAM Airlines

Tue 12/1611:30 amAEP - PDX

2 stops31h 05mLATAM Airlines

Deal found 9/24

$1,125

Thu 1/17:15 amPDX - AEP

2 stops30h 25mLATAM Airlines

Thu 2/195:15 pmAEP - PDX

2 stops22h 50mLATAM Airlines

Deal found 9/22

$1,125

Last-minute flights from Portland to Buenos Aires
Discover last-minute flight deals from Portland to Buenos Aires. Data last updated September 25, 2025 and is based on user searches.

Sun 10/1911:59 pmPDX - EZE

2 stops28h 01mUnited Airlines

Thu 11/1310:05 pmEZE - PDX

1 stop19h 08mUnited Airlines

Deal found 9/23

$1,225

Sun 10/1911:59 pmPDX - EZE

2 stops28h 01mUnited Airlines

Fri 11/1411:55 pmEZE - PDX

2 stops19h 51mUnited Airlines

Deal found 9/23

$1,265

Mon 10/207:02 amPDX - EZE

1 stop20h 58mUnited Airlines

Wed 11/1211:55 pmEZE - PDX

1 stop17h 18mUnited Airlines

Deal found 9/23

$1,220

Mon 10/207:02 amPDX - EZE

1 stop20h 58mUnited Airlines

Sat 11/1511:55 pmEZE - PDX

2 stops27h 56mUnited Airlines

Deal found 9/23

$1,260

Wed 10/222:52 pmPDX - EZE

3 stops27h 33mMultiple Airlines

Wed 10/297:50 amEZE - PDX

2 stops31h 45mMultiple Airlines

Deal found 9/24

$980

Wed 10/2212:30 pmPDX - AEP

2 stops23h 35mMultiple Airlines

Wed 10/298:25 pmAEP - PDX

2 stops21h 25mMultiple Airlines

Deal found 9/24

$1,058

Wed 10/2212:59 pmPDX - EZE

1 stop15h 01mUnited Airlines

Wed 11/1210:05 pmEZE - PDX

2 stops25h 31mUnited Airlines

Deal found 9/23

$1,200

Wed 10/225:30 amPDX - EZE

3 stops22h 30mUnited Airlines

Thu 11/1311:55 pmEZE - PDX

1 stop17h 18mUnited Airlines

Deal found 9/23

$1,205

Wed 10/2212:59 pmPDX - EZE

1 stop15h 01mUnited Airlines

Sat 11/1511:55 pmEZE - PDX

1 stop17h 21mUnited Airlines

Deal found 9/23

$1,240

Wed 10/226:00 amPDX - EZE

2 stops20h 10mLATAM Airlines

Wed 11/127:43 pmEZE - PDX

2 stops21h 03mLATAM Airlines

Deal found 9/24

$1,247

Wed 10/222:52 pmPDX - AEP

2 stops21h 13mMultiple Airlines

Wed 11/128:25 pmAEP - PDX

2 stops22h 25mMultiple Airlines

Deal found 9/23

$1,267

Fri 10/2411:59 pmPDX - EZE

2 stops26h 21mUnited Airlines

Wed 11/1211:55 pmEZE - PDX

1 stop17h 18mUnited Airlines

Deal found 9/23

$1,245

One-way flights from Portland to Buenos Aires
Search for one-way flight options from Portland to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated September 25, 2025.

Thu 12/43:14 pmPDX - AEP

3 stops35h 16mMultiple Airlines

Deal found 9/25

$365

Thu 12/42:15 pmPDX - EZE

3 stops34h 35mMultiple Airlines

Deal found 9/25

$381

Tue 12/27:18 amPDX - AEP

2 stops43h 12mMultiple Airlines

Deal found 9/25

$387

Tue 12/29:30 pmPDX - EZE

3 stops51h 20mMultiple Airlines

Deal found 9/25

$402

Sat 11/297:47 amPDX - EZE

2 stops51h 03mMultiple Airlines

Deal found 9/23

$458

Tue 12/2311:07 pmPDX - EZE

3 stops29h 28mMultiple Airlines

Deal found 9/25

$471

Mon 12/2211:07 pmPDX - EZE

3 stops29h 28mMultiple Airlines

Deal found 9/25

$486

Fri 11/2811:00 pmPDX - AEP

3 stops29h 50mMultiple Airlines

Deal found 9/23

$486

Wed 12/2410:55 amPDX - EZE

3 stops41h 40mMultiple Airlines

Deal found 9/25

$489

Mon 12/2211:07 pmPDX - AEP

3 stops59h 53mMultiple Airlines

Deal found 9/25

$493

Sat 11/297:47 amPDX - AEP

3 stops55h 43mMultiple Airlines

Deal found 9/23

$494

Fri 11/2811:00 pmPDX - EZE

2 stops23h 45mMultiple Airlines

Deal found 9/23

$507

Cheapflights Fare Finder

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

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 12/10

7:18 am-7:30 am

2 stops43h 12m

Buenos Aires Jorge Newbery

Tue 12/16

5:15 pm-9:38 am

3 stops45h 23m

$1,034

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 12/8

7:15 am-9:00 am

2 stops20h 45m

Buenos Aires Ministro Pistarini

Mon 12/15

11:55 pm-4:00 pm

2 stops21h 05m

$1,116

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 12/8

7:00 am-7:20 am

1 stop19h 20m

Buenos Aires Ministro Pistarini

Wed 12/17

10:05 pm-1:20 pm

1 stop20h 15m

$1,116

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Wed 12/10

12:55 pm-9:20 am

1 stop15h 25m

Buenos Aires Ministro Pistarini

Wed 12/17

11:55 pm-7:43 pm

1 stop24h 48m

$1,116

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Sun 12/7

10:10 pm-7:55 am

2 stops28h 45m

Buenos Aires Jorge Newbery

Tue 12/16

11:30 am-11:49 am

2 stops29h 19m

$1,125

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Mon 12/8

11:46 am-6:40 pm

2 stops25h 54m

Buenos Aires Jorge Newbery

Tue 12/16

3:40 pm-1:35 pm

2 stops26h 55m

$1,125

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 12/31

6:00 am-7:55 am

2 stops20h 55m

Buenos Aires Jorge Newbery

Tue 2/17

11:30 am-11:05 am

2 stops28h 35m

$1,125

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 12/31

7:15 am-6:40 pm

2 stops30h 25m

Buenos Aires Jorge Newbery

Thu 2/19

5:15 pm-11:05 am

2 stops22h 50m

$1,125

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Thu 1/1

7:15 am-6:40 pm

2 stops30h 25m

Buenos Aires Jorge Newbery

Wed 2/18

11:30 am-11:53 am

2 stops29h 23m

$1,125

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 12/9

6:29 am-11:40 am

3 stops24h 11m

Buenos Aires Jorge Newbery

Tue 12/16

11:30 am-1:35 pm

2 stops31h 05m

$1,125

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 33 results

Compare providers for flights from Portland to Buenos Aires

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*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust 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

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

To ensure you get the cheapest price possible for a flight from Portland to Buenos Aires, you should look to book at least 54 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?

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

Peruse reviews from past customers who have flown with Delta, LATAM Airlines, and United 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

7,973 reviews

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

7,973 reviews

Delta

8.0

Very good

7,973 reviews

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

1,855 reviews

Delta

8.0

Very good

7,973 reviews

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

8,926 reviews

Delta

8.0

Very good

7,973 reviews

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

7,973 reviews

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

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 19h 20m. 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 $1,060, was found to be the cheapest airline from Portland to Buenos Aires.Alternate airlines to your destination round-trip include Delta and LATAM Airlines. American Airlines is 23% 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, 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

Top 4 airlines flying from Portland to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$1,060	Average$1,310	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$1,113	Average$1,261	FlexibilityNo cancel fee	On-timeN/A
LATAM Airlines	Cheapest$1,123	Average$1,415	FlexibilityNo cancel fee	On-time81%
United Airlines	Cheapest$1,125	Average$1,370	FlexibilityNo cancel fee	On-time69%

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$365+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Buenos Aires with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Portland to Buenos Aires are usually found in May or October, booked 54 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Portland to Buenos Aires

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Buenos Aires

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 25, 2025.

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 25, 2025.

Cheapflights Fare Finder

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

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.

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.

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 September 19, 2025.

What is the cheapest month to book a flight from Portland to Buenos Aires?

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 September 25, 2025.

How much does it cost to fly round-trip from Portland to Buenos Aires?

Reviews of airlines servicing Buenos Aires

Peruse reviews from past customers who have flown with Delta, LATAM Airlines, and United 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.

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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Alternative routes for Portland to Buenos Aires

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Top 4 airlines flying from Portland to Buenos Aires

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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 September 25, 2025.