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Cheap flights from Portland to Porto Alegre from $506

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 Porto Alegre departing on 4/6. 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
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

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Find the cheapest flights from Portland to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:15 pm - 9:45 am
PDX
-
POA
39h 30m
2 stops
United Airlines Logo
3:30 pm - 11:58 am
POA
-
PDX
24h 28m
2 stops
$1,543United Airlines
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
2:15 pm - 9:45 am
PDX
-
POA
39h 30m
2 stops
United Airlines Logo
3:25 pm - 3:05 pm
POA
-
PDX
27h 40m
2 stops
$1,544United Airlines
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
2:15 pm - 9:45 am
PDX
-
POA
39h 30m
2 stops
United Airlines Logo
3:30 pm - 11:58 am
POA
-
PDX
24h 28m
2 stops
$1,583United Airlines
Sat, Sep 19 - Wed, Sep 23

United Airlines flights from Portland to Porto Alegre

Our best United Airlines deals on Portland to Porto Alegre flight tickets
United Airlines
Sep 19
PDX2:15 pmPortland
39h 30m
2 stops
POA9:45 amPorto Alegre Salgado Filho
Sep 23
POA3:30 pmPorto Alegre Salgado Filho
24h 28m
2 stops
PDX11:58 amPortland
$1,543
United Airlines
Sep 19
PDX2:15 pmPortland
39h 30m
2 stops
POA9:45 amPorto Alegre Salgado Filho
Sep 23
POA3:25 pmPorto Alegre Salgado Filho
27h 40m
2 stops
PDX3:05 pmPortland
$1,544
United Airlines
Sep 19
PDX2:15 pmPortland
39h 30m
2 stops
POA9:45 amPorto Alegre Salgado Filho
Sep 23
POA3:30 pmPorto Alegre Salgado Filho
24h 28m
2 stops
PDX11:58 amPortland
$1,583

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Porto Alegre 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 27, 2026.
Use the filters below to find and compare flights from Portland to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 9/19

2:15 pm-9:45 am

2 stops39h 30m

Porto Alegre Salgado Filho

Wed 9/23

3:30 pm-11:58 am

2 stops24h 28m

$1,543

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 9/19

2:15 pm-9:45 am

2 stops39h 30m

Porto Alegre Salgado Filho

Wed 9/23

3:25 pm-3:05 pm

2 stops27h 40m

$1,544

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 9/19

2:15 pm-9:45 am

2 stops39h 30m

Porto Alegre Salgado Filho

Wed 9/23

3:30 pm-11:58 am

2 stops24h 28m

$1,583
Cheapest one-way

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Mon 4/6

7:00 am-2:40 pm

3 stops51h 40m

$506

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Wed 4/8

7:14 am-12:20 am

2 stops37h 06m

$564

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Thu 4/9

5:19 pm-3:35 pm

3 stops42h 16m

$588

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 4/11

7:03 am-12:20 am

2 stops37h 17m

$590

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Tue 4/7

2:37 pm-12:20 am

2 stops29h 43m

$596

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Tue 4/7

7:00 am-9:00 pm

3 stops34h 00m

$617

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sun 4/12

5:14 pm-8:05 am

3 stops34h 51m

$624

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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When to book flights from Portland to Porto Alegre

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

Cheap Portland to Porto Alegre (PDX to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Porto Alegre

Fastest flight time

39h 30m

Direct flights

None
The fastest flight from Portland to Porto Alegre takes 39h 30m
There are no direct flights from Portland to Porto Alegre. There are no popular flight routes from Portland to Porto Alegre.
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  • How far is Portland to Porto Alegre Salgado Filho by plane?

    A flight from Portland to Porto Alegre Salgado Filho will travel around 6866.6 mi. 39h 30m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Porto Alegre Salgado Filho Airport?

    Prices for flights from Portland Airport to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Portland Airport to Porto Alegre Salgado Filho Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The travel and health documents required for your trip to Porto Alegre Salgado Filho Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Portland to Porto Alegre?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Portland from Porto Alegre. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Portland to Porto Alegre with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Porto Alegre?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Porto Alegre for you.

Can I find flights from Portland to Porto Alegre with flexible booking policies on momondo?

Flights from Portland to Porto Alegre with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Porto Alegre?

momondo provides multiple filters to help you find the best flight to Porto Alegre from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Porto Alegre, momondo offers a useful price alert feature which will track prices for flights to Porto Alegre from Portland and alert you when they change.

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