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Cheap flights from Portland to Buenos Aires from $393

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
11:15 pm - 9:16 am
PDX
-
EZE
30h 01m
3 stops
Multiple Airlines Logo
11:00 am - 1:50 pm
EZE
-
PDX
30h 50m
3 stops
$1,067Multiple Airlines
Thu, Oct 1 - Thu, Oct 8
Multiple Airlines Logo
11:15 pm - 9:16 am
PDX
-
EZE
30h 01m
3 stops
Multiple Airlines Logo
9:15 am - 1:50 pm
EZE
-
PDX
32h 35m
3 stops
$1,109Multiple Airlines
Thu, Sep 24 - Tue, Oct 6
Multiple Airlines Logo
6:15 pm - 3:23 am
PDX
-
EZE
29h 08m
3 stops
Multiple Airlines Logo
11:00 am - 1:50 pm
EZE
-
PDX
30h 50m
3 stops
$1,111Multiple Airlines
Thu, Sep 24 - Tue, Oct 6
Aeromexico Logo
1:00 pm - 9:25 pm
PDX
-
EZE
28h 25m
2 stops
Aeromexico Logo
11:25 pm - 10:26 pm
EZE
-
PDX
27h 01m
2 stops
$1,130Aeromexico
Thu, Oct 1 - Thu, Oct 8
Multiple Airlines Logo
6:15 pm - 3:23 am
PDX
-
EZE
29h 08m
3 stops
Multiple Airlines Logo
9:15 am - 1:50 pm
EZE
-
PDX
32h 35m
3 stops
$1,135Multiple Airlines
Thu, Sep 24 - Tue, Oct 6
Aeromexico Logo
1:00 pm - 9:25 pm
PDX
-
EZE
28h 25m
2 stops
Aeromexico Logo
11:25 pm - 10:26 pm
EZE
-
PDX
27h 01m
2 stops
$1,146Aeromexico
Thu, Sep 24 - Tue, Oct 6
Air Canada Logo
3:30 pm - 2:30 pm
PDX
-
EZE
43h 00m
3 stops
Air Canada Logo
4:35 pm - 9:31 am
EZE
-
PDX
44h 56m
3 stops
$1,168Air Canada
Tue, Sep 22 - Mon, Sep 28
Air Canada Logo
3:30 pm - 2:30 pm
PDX
-
EZE
43h 00m
3 stops
Air Canada Logo
4:35 pm - 9:31 am
EZE
-
PDX
44h 56m
3 stops
$1,169Air Canada
Tue, Sep 22 - Mon, Sep 28
LATAM Airlines Logo
10:00 am - 2:40 pm
PDX
-
AEP
24h 40m
2 stops
LATAM Airlines Logo
5:05 pm - 10:56 am
AEP
-
PDX
22h 51m
2 stops
$1,271LATAM Airlines
Sat, Oct 31 - Tue, Nov 10
LATAM Airlines Logo
5:10 pm - 6:30 pm
PDX
-
AEP
21h 20m
2 stops
LATAM Airlines Logo
3:45 pm - 10:56 am
AEP
-
PDX
23h 11m
2 stops
$1,319LATAM Airlines
Sat, Oct 10 - Sat, Oct 24

Aeromexico flights from Portland to Buenos Aires

Our best Aeromexico deals on Portland to Buenos Aires flight tickets
Aeromexico
Oct 1
PDX1:00 pmPortland
28h 25m
2 stops
EZE9:25 pmBuenos Aires Ministro Pistarini
Oct 8
EZE11:25 pmBuenos Aires Ministro Pistarini
27h 01m
2 stops
PDX10:26 pmPortland
$1,130
Aeromexico
Sep 24
PDX1:00 pmPortland
28h 25m
2 stops
EZE9:25 pmBuenos Aires Ministro Pistarini
Oct 6
EZE11:25 pmBuenos Aires Ministro Pistarini
27h 01m
2 stops
PDX10:26 pmPortland
$1,146
Aeromexico
Oct 3
PDX10:00 amPortland
31h 25m
2 stops
EZE9:25 pmBuenos Aires Ministro Pistarini
Oct 11
EZE11:25 pmBuenos Aires Ministro Pistarini
24h 03m
2 stops
PDX7:28 pmPortland
$1,184

United Airlines flights from Portland to Buenos Aires

Our best United Airlines deals on Portland to Buenos Aires flight tickets
United Airlines
Aug 3
PDX2:25 pmPortland
37h 35m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 1
EZE9:00 pmBuenos Aires Ministro Pistarini
18h 59m
1 stop
PDX11:59 amPortland
$1,251
United Airlines
Aug 3
PDX11:59 pmPortland
28h 01m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 1
EZE9:00 pmBuenos Aires Ministro Pistarini
18h 59m
1 stop
PDX11:59 amPortland
$1,263
United Airlines
Aug 3
PDX11:59 pmPortland
28h 01m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 24
EZE9:00 pmBuenos Aires Ministro Pistarini
20h 14m
2 stops
PDX1:14 pmPortland
$1,267

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 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 10/1

11:15 pm-9:16 am

3 stops30h 01m

Buenos Aires Ministro Pistarini

Thu 10/8

11:00 am-1:50 pm

3 stops30h 50m

$1,067

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 9/24

11:15 pm-9:16 am

3 stops30h 01m

Buenos Aires Ministro Pistarini

Tue 10/6

9:15 am-1:50 pm

3 stops32h 35m

$1,109

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 9/24

6:15 pm-3:23 am

3 stops29h 08m

Buenos Aires Ministro Pistarini

Tue 10/6

11:00 am-1:50 pm

3 stops30h 50m

$1,111

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 10/1

1:00 pm-9:25 pm

2 stops28h 25m

Buenos Aires Ministro Pistarini

Thu 10/8

11:25 pm-10:26 pm

2 stops27h 01m

$1,130

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 9/24

6:15 pm-3:23 am

3 stops29h 08m

Buenos Aires Ministro Pistarini

Tue 10/6

9:15 am-1:50 pm

3 stops32h 35m

$1,135

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 9/24

1:00 pm-9:25 pm

2 stops28h 25m

Buenos Aires Ministro Pistarini

Tue 10/6

11:25 pm-10:26 pm

2 stops27h 01m

$1,146

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Tue 9/22

3:30 pm-2:30 pm

3 stops43h 00m

Buenos Aires Ministro Pistarini

Mon 9/28

4:35 pm-9:31 am

3 stops44h 56m

$1,168

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Tue 9/22

3:30 pm-2:30 pm

3 stops43h 00m

Buenos Aires Ministro Pistarini

Mon 9/28

4:35 pm-9:31 am

3 stops44h 56m

$1,169

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Sat 10/31

10:00 am-2:40 pm

2 stops24h 40m

Buenos Aires Jorge Newbery

Tue 11/10

5:05 pm-10:56 am

2 stops22h 51m

$1,271
Quickest round-trip

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Sat 10/10

5:10 pm-6:30 pm

2 stops21h 20m

Buenos Aires Jorge Newbery

Sat 10/24

3:45 pm-10:56 am

2 stops23h 11m

$1,319

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 July. Flight prices, which tend to average around $248, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of July, then book flights to Buenos Aires from Portland during August instead. Flights to Buenos Aires in August, while not as cheap as those in July, still average around $313.

How have Portland to Buenos Aires flight prices changed over time?

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.
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Frequently asked questions about flying from Portland to Buenos Aires

  • 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
11,664 reviews
Search American Airlines flights
DeltaPriceFrom $901Free CancellationRating
7.9
8,455 reviews
Search Delta flights
United AirlinesPriceFrom $951Free CancellationRating
7.4
9,727 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $1,182Free CancellationRating
7.4
1,923 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