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Cheap flights from Portland to Buenos Aires from $307

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Buenos Aires departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 8:00 am
PDX
-
EZE
21h 00m
1 stop
United Airlines Logo
9:00 pm - 7:18 pm
EZE
-
PDX
26h 18m
1 stop
$1,037United Airlines
Wed, May 13 - Wed, May 20
United Airlines Logo
5:00 am - 8:00 am
PDX
-
EZE
23h 00m
2 stops
United Airlines Logo
9:00 pm - 7:38 pm
EZE
-
PDX
26h 38m
1 stop
$1,041United Airlines
Wed, Apr 29 - Wed, May 6
United Airlines Logo
11:55 pm - 8:00 am
PDX
-
EZE
28h 05m
2 stops
United Airlines Logo
9:00 pm - 7:18 pm
EZE
-
PDX
26h 18m
1 stop
$1,081United Airlines
Sun, May 10 - Tue, May 26
United Airlines Logo
11:59 pm - 8:00 am
PDX
-
EZE
28h 01m
1 stop
United Airlines Logo
9:00 pm - 7:18 pm
EZE
-
PDX
26h 18m
1 stop
$1,091United Airlines
Sun, May 10 - Tue, May 26
LATAM Airlines Logo
11:16 am - 4:00 pm
PDX
-
AEP
24h 44m
2 stops
LATAM Airlines Logo
7:20 pm - 12:36 pm
AEP
-
PDX
21h 16m
2 stops
$1,127LATAM Airlines
Tue, May 12 - Tue, May 19
LATAM Airlines Logo
11:21 am - 9:20 am
PDX
-
EZE
17h 59m
2 stops
LATAM Airlines Logo
10:40 pm - 6:49 pm
EZE
-
PDX
24h 09m
2 stops
$1,151LATAM Airlines
Thu, Jun 4 - Mon, Jun 22
Multiple Airlines Logo
7:00 am - 4:30 am
PDX
-
EZE
17h 30m
1 stop
Multiple Airlines Logo
2:17 am - 9:34 am
EZE
-
PDX
35h 17m
2 stops
$1,162Multiple Airlines
Mon, Apr 20 - Sun, May 17
LATAM Airlines Logo
11:21 am - 9:20 am
PDX
-
EZE
17h 59m
2 stops
LATAM Airlines Logo
10:40 pm - 6:49 pm
EZE
-
PDX
24h 09m
2 stops
$1,185LATAM Airlines
Fri, Jun 5 - Mon, Jun 22
United Airlines Logo
11:55 pm - 8:00 am
PDX
-
EZE
28h 05m
2 stops
United Airlines Logo
9:00 pm - 7:38 pm
EZE
-
PDX
26h 38m
1 stop
$1,186United Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
3:30 pm - 12:05 am
PDX
-
EZE
28h 35m
3 stops
Multiple Airlines Logo
9:15 am - 1:50 pm
EZE
-
PDX
32h 35m
3 stops
$1,194Multiple Airlines
Tue, Jun 2 - Tue, Jun 16

United Airlines flights from Portland to Buenos Aires

Our best United Airlines deals on Portland to Buenos Aires flight tickets
United Airlines
May 13
PDX7:00 amPortland
21h 00m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
May 20
EZE9:00 pmBuenos Aires Ministro Pistarini
26h 18m
1 stop
PDX7:18 pmPortland
$1,037
United Airlines
Apr 29
PDX5:00 amPortland
23h 00m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
May 6
EZE9:00 pmBuenos Aires Ministro Pistarini
26h 38m
1 stop
PDX7:38 pmPortland
$1,041
United Airlines
May 10
PDX11:55 pmPortland
28h 05m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
May 26
EZE9:00 pmBuenos Aires Ministro Pistarini
22h 13m
2 stops
PDX3:13 pmPortland
$1,081

LATAM Airlines flights from Portland to Buenos Aires

Our best LATAM Airlines deals on Portland to Buenos Aires flight tickets
LATAM Airlines
May 12
PDX11:16 amPortland
24h 44m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
May 19
AEP7:20 pmBuenos Aires Jorge Newbery
21h 16m
2 stops
PDX12:36 pmPortland
$1,127
LATAM Airlines
Jun 4
PDX11:21 amPortland
17h 59m
2 stops
EZE9:20 amBuenos Aires Ministro Pistarini
Jun 22
EZE10:40 pmBuenos Aires Ministro Pistarini
18h 20m
2 stops
PDX1:00 pmPortland
$1,151
LATAM Airlines
Jun 5
PDX11:21 amPortland
17h 59m
2 stops
EZE9:20 amBuenos Aires Ministro Pistarini
Jun 22
EZE10:40 pmBuenos Aires Ministro Pistarini
18h 20m
2 stops
PDX1:00 pmPortland
$1,185

momondo 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, momondo users made 832,500 searches. Data last updated March 30, 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

Wed 5/13

7:00 am-8:00 am

1 stop21h 00m

Buenos Aires Ministro Pistarini

Wed 5/20

9:00 pm-7:18 pm

1 stop26h 18m

$1,037

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Wed 4/29

5:00 am-8:00 am

2 stops23h 00m

Buenos Aires Ministro Pistarini

Wed 5/6

9:00 pm-7:38 pm

1 stop26h 38m

$1,041

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 5/10

11:55 pm-8:00 am

2 stops28h 05m

Buenos Aires Ministro Pistarini

Tue 5/26

9:00 pm-7:18 pm

1 stop26h 18m

$1,081

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 5/10

11:59 pm-8:00 am

1 stop28h 01m

Buenos Aires Ministro Pistarini

Tue 5/26

9:00 pm-7:18 pm

1 stop26h 18m

$1,091

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 5/12

11:16 am-4:00 pm

2 stops24h 44m

Buenos Aires Jorge Newbery

Tue 5/19

7:20 pm-12:36 pm

2 stops21h 16m

$1,127
Quickest round-trip

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 6/4

11:21 am-9:20 am

2 stops17h 59m

Buenos Aires Ministro Pistarini

Mon 6/22

10:40 pm-6:49 pm

2 stops24h 09m

$1,151

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 4/20

7:00 am-4:30 am

1 stop17h 30m

Buenos Aires Ministro Pistarini

Sun 5/17

2:17 am-9:34 am

2 stops35h 17m

$1,162

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Fri 6/5

11:21 am-9:20 am

2 stops17h 59m

Buenos Aires Ministro Pistarini

Mon 6/22

10:40 pm-6:49 pm

2 stops24h 09m

$1,185

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 5/10

11:55 pm-8:00 am

2 stops28h 05m

Buenos Aires Ministro Pistarini

Sun 5/17

9:00 pm-7:38 pm

1 stop26h 38m

$1,186

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Tue 6/2

3:30 pm-12:05 am

3 stops28h 35m

Buenos Aires Ministro Pistarini

Tue 6/16

9:15 am-1:50 pm

3 stops32h 35m

$1,194

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Portland to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Portland is in February. Flight prices, which tend to average around $1,191, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Buenos Aires from Portland during October instead. Flights to Buenos Aires in October, while not as cheap as those in February, still average around $1,200.

Can stopping save me money on Portland to Buenos Aires flights?

You could potentially save up to 14% on your flight if you consider stops on a Portland to Buenos Aires flight.

When to book flights from Portland to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Buenos Aires (PDX to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Buenos Aires

Fastest flight time

14h 58m

Direct flights

None
The fastest flight from Portland to Buenos Aires takes 14h 58m
There are no direct flights from Portland to Buenos Aires. There are no popular flight routes from Portland to Buenos Aires.
Search flight deals

  • How far is Portland to Buenos Aires by plane?

    Portland and Buenos Aires are 6830.7 mi apart from one another. By plane, this route typically takes 14h 58m.

  • When did momondo last update prices for flights from Portland Airport to Buenos Aires?

    Prices for flights from Portland Airport to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Buenos Aires?

  • How old do you have to be to fly from Portland Airport to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland to Buenos Aires?

Best airlines flying from Portland to Buenos Aires

Compare and see reviews for airlines that fly from Portland to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $826Free CancellationRating
7.1
11,529 reviews
Search American Airlines flights
DeltaPriceFrom $901Free CancellationRating
7.9
8,358 reviews
Search Delta flights
United AirlinesPriceFrom $971Free CancellationRating
7.4
9,514 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $1,182Free CancellationRating
7.4
1,902 reviews
Search LATAM Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Buenos Aires?

Finding the right flight to Buenos Aires from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

Can I find flights from Portland to Buenos Aires with flexible booking policies on momondo?

Yes. All flights to Buenos Aires from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to Buenos Aires?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Buenos Aires.

I’m not ready to book a flight from Portland to Buenos Aires right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport