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Cheap flights from Ontario to Porto Alegre from $710

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Porto Alegre departing on 5/1. 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 Ontario to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 2:05 pm
ONT
-
POA
27h 05m
2 stops
United Airlines Logo
5:10 pm - 6:19 pm
POA
-
ONT
29h 09m
2 stops
$1,381United Airlines
Mon, Aug 17 - Wed, Aug 19
United Airlines Logo
7:00 am - 9:45 am
ONT
-
POA
46h 45m
2 stops
United Airlines Logo
3:30 pm - 9:21 pm
POA
-
ONT
33h 51m
2 stops
$1,394United Airlines
Mon, Sep 28 - Thu, Oct 1
Multiple Airlines Logo
11:35 pm - 6:15 am
ONT
-
POA
26h 40m
3 stops
Multiple Airlines Logo
5:50 pm - 9:45 pm
POA
-
ONT
31h 55m
3 stops
$1,974Multiple Airlines
Tue, Apr 28 - Fri, May 8
LATAM Airlines Logo
7:05 am - 6:15 am
ONT
-
POA
19h 10m
2 stops
LATAM Airlines Logo
5:50 pm - 10:40 am
POA
-
ONT
20h 50m
2 stops
$3,887LATAM Airlines
Fri, Jun 5 - Mon, Jun 15

United Airlines flights from Ontario to Porto Alegre

Our best United Airlines deals on Ontario to Porto Alegre flight tickets
United Airlines
Aug 17
ONT7:00 amOntario
27h 05m
2 stops
POA2:05 pmPorto Alegre Salgado Filho
Aug 19
POA5:10 pmPorto Alegre Salgado Filho
29h 09m
2 stops
ONT6:19 pmOntario
$1,381
United Airlines
Sep 28
ONT7:00 amOntario
46h 45m
2 stops
POA9:45 amPorto Alegre Salgado Filho
Oct 1
POA3:30 pmPorto Alegre Salgado Filho
33h 51m
2 stops
ONT9:21 pmOntario
$1,394

momondo Fare Finder

 
Customize your flight search to find flights from Ontario 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 April 10, 2026.
Use the filters below to find and compare flights from Ontario to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Mon 8/17

7:00 am-2:05 pm

2 stops27h 05m

Porto Alegre Salgado Filho

Wed 8/19

5:10 pm-6:19 pm

2 stops29h 09m

$1,381

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Mon 9/28

7:00 am-9:45 am

2 stops46h 45m

Porto Alegre Salgado Filho

Thu 10/1

3:30 pm-9:21 pm

2 stops33h 51m

$1,394

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Tue 4/28

11:35 pm-6:15 am

3 stops26h 40m

Porto Alegre Salgado Filho

Fri 5/8

5:50 pm-9:45 pm

3 stops31h 55m

$1,974
Quickest round-trip

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Fri 6/5

7:05 am-6:15 am

2 stops19h 10m

Porto Alegre Salgado Filho

Mon 6/15

5:50 pm-10:40 am

2 stops20h 50m

$3,887
Cheapest one-way

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Fri 5/1

5:33 pm-6:15 pm

3 stops44h 42m

$710

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Sat 4/18

11:35 pm-11:45 am

3 stops32h 10m

$737

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Fri 4/17

9:36 pm-10:30 am

3 stops32h 54m

$840

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Fri 4/17

9:36 pm-10:30 am

3 stops32h 54m

$842
Quickest one-way

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Fri 5/1

6:00 am-9:50 am

2 stops23h 50m

$855

OntarioPorto Alegre

ONT - POA

ONTPOA

Ontario

Thu 4/30

11:35 pm-10:35 am

3 stops31h 00m

$862

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Ontario to Porto Alegre

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 cheapest airline that flies from Ontario to Porto Alegre Salgado Filho?

United Airlines is the most popular carrier operating from Ontario to Porto Alegre Salgado Filho

What airlines fly to Porto Alegre?

Copa Airlines, LATAM Airlines and United Airlines are the top three most popular airlines that fly to Porto Alegre from Ontario according to our data. Copa Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Porto Alegre. Keep in mind that there are 3 different airlines that fly to Porto Alegre on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Porto Alegre

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

Cheap Ontario to Porto Alegre (ONT to POA) flight deals and tips

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

Fastest flight time

26h 40m

Direct flights

None
The fastest flight from Ontario to Porto Alegre takes 26h 40m
There are no direct flights from Ontario to Porto Alegre. There are no popular flight routes from Ontario to Porto Alegre.
Search flight deals

Frequently asked questions about flying from Ontario to Porto Alegre

  • How far is Ontario to Porto Alegre Salgado Filho by plane?

    Porto Alegre Salgado Filho is 6188.5 mi away from Ontario. Typically, this will take 26h 40m by plane in normal conditions.

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

    Prices for flights from Ontario Airport to Porto Alegre Salgado Filho Airport are updated daily.

  • How old do you have to be to fly from Ontario 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 Ontario 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 you'll need for your trip to Porto Alegre Salgado Filho Airport 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 Porto Alegre Salgado Filho Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario 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 Ontario to Porto Alegre for you.

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

Yes. All flights to Porto Alegre from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto Alegre from Ontario.

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

Yes momondo offers price alerts on flights to Porto Alegre from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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