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Cheap flights from Houston to Porto Alegre from $583

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston to Porto Alegre departing on 12/12. 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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Cheap round-trip flights

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Multiple Airlines Logo
5:46 am - 6:30 pmIAH-POA
33h 44m3 stops
Multiple Airlines Logo
5:20 pm - 8:32 amPOA-IAH
18h 12m2 stops
$933Multiple Airlines
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Wed, Dec 31 - Wed, Jan 7
Multiple Airlines Logo
5:46 am - 5:15 pmIAH-POA
32h 29m3 stops
Multiple Airlines Logo
5:20 pm - 9:08 pmPOA-IAH
30h 48m3 stops
$951Multiple Airlines
Find Deal
Wed, Dec 31 - Wed, Jan 7
Air Canada Logo
7:10 am - 2:35 pmIAH-POA
28h 25m2 stops
Air Canada Logo
5:10 pm - 9:44 pmPOA-IAH
31h 34m2 stops
$1,356Air Canada
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Sun, Mar 1 - Wed, Mar 4
American Airlines Logo
4:53 pm - 3:40 pmIAH-POA
19h 47m2 stops
American Airlines Logo
6:25 pm - 1:51 pmPOA-IAH
22h 26m2 stops
$1,391American Airlines
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Fri, Jan 9 - Thu, Jan 15
LATAM Airlines Logo
11:58 am - 5:05 pmIAH-POA
26h 07m2 stops
LATAM Airlines Logo
6:00 pm - 3:18 pmPOA-IAH
24h 18m2 stops
$1,398LATAM Airlines
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Wed, Dec 31 - Wed, Jan 7
LATAM Airlines Logo
11:58 am - 5:20 pmIAH-POA
26h 22m2 stops
LATAM Airlines Logo
6:00 pm - 5:42 pmPOA-IAH
26h 42m2 stops
$1,473LATAM Airlines
Find Deal
Tue, Dec 30 - Wed, Jan 7
LATAM Airlines Logo
11:58 am - 5:05 pmIAH-POA
26h 07m2 stops
LATAM Airlines Logo
6:00 pm - 3:18 pmPOA-IAH
24h 18m2 stops
$1,548LATAM Airlines
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Thu, Jan 1 - Wed, Jan 7
LATAM Airlines Logo
11:58 am - 5:05 pmIAH-POA
26h 07m2 stops
LATAM Airlines Logo
6:00 pm - 3:18 pmPOA-IAH
24h 18m2 stops
$1,625LATAM Airlines
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Wed, Dec 31 - Fri, Jan 9
United Airlines Logo
8:45 pm - 2:35 pmIAH-POA
14h 50m1 stop
United Airlines Logo
3:25 pm - 5:20 amPOA-IAH
16h 55m1 stop
$1,653United Airlines
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Sun, Mar 1 - Wed, Mar 4
United Airlines Logo
4:40 pm - 4:10 pmIAH-POA
20h 30m2 stops
United Airlines Logo
3:25 pm - 5:20 amPOA-IAH
16h 55m1 stop
$1,658United Airlines
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Sun, Mar 1 - Wed, Mar 4

LATAM Airlines flights from Houston to Porto Alegre

Our best LATAM Airlines deals on Houston to Porto Alegre flight tickets
LATAM Airlines
Dec 31
IAH11:58 amHouston George Bush Intcntl
26h 07m
2 stops
POA5:05 pmPorto Alegre Salgado Filho
Jan 7
POA6:00 pmPorto Alegre Salgado Filho
24h 18m
2 stops
IAH3:18 pmHouston George Bush Intcntl
$1,398
Find similar
LATAM Airlines
Dec 30
IAH11:58 amHouston George Bush Intcntl
26h 22m
2 stops
POA5:20 pmPorto Alegre Salgado Filho
Jan 7
POA6:00 pmPorto Alegre Salgado Filho
26h 42m
2 stops
IAH5:42 pmHouston George Bush Intcntl
$1,473
Find similar
LATAM Airlines
Jan 1
IAH11:58 amHouston George Bush Intcntl
26h 07m
2 stops
POA5:05 pmPorto Alegre Salgado Filho
Jan 7
POA6:00 pmPorto Alegre Salgado Filho
24h 18m
2 stops
IAH3:18 pmHouston George Bush Intcntl
$1,548
Find similar

United Airlines flights from Houston to Porto Alegre

Our best United Airlines deals on Houston to Porto Alegre flight tickets
United Airlines
Mar 1
IAH8:45 pmHouston George Bush Intcntl
14h 50m
1 stop
POA2:35 pmPorto Alegre Salgado Filho
Mar 4
POA3:25 pmPorto Alegre Salgado Filho
16h 55m
1 stop
IAH5:20 amHouston George Bush Intcntl
$1,653
Find similar
United Airlines
Mar 1
IAH4:40 pmHouston George Bush Intcntl
20h 30m
2 stops
POA4:10 pmPorto Alegre Salgado Filho
Mar 4
POA3:25 pmPorto Alegre Salgado Filho
16h 55m
1 stop
IAH5:20 amHouston George Bush Intcntl
$1,658
Find similar
United Airlines
Mar 1
IAH8:45 pmHouston George Bush Intcntl
16h 25m
1 stop
POA4:10 pmPorto Alegre Salgado Filho
Mar 4
POA5:10 pmPorto Alegre Salgado Filho
20h 28m
2 stops
IAH10:38 amHouston George Bush Intcntl
$1,663
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momondo Fare Finder

 
Customize your flight search to find flights from Houston 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 October 31, 2025.
Use the filters below to find and compare flights from Houston to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Wed 12/31

5:46 am-6:30 pm

3 stops33h 44m

Porto Alegre Salgado Filho

Wed 1/7

5:20 pm-8:32 am

2 stops18h 12m

$933

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Wed 12/31

5:46 am-5:15 pm

3 stops32h 29m

Porto Alegre Salgado Filho

Wed 1/7

5:20 pm-9:08 pm

3 stops30h 48m

$951

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Sun 3/1

7:10 am-2:35 pm

2 stops28h 25m

Porto Alegre Salgado Filho

Wed 3/4

5:10 pm-9:44 pm

2 stops31h 34m

$1,356

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Fri 1/9

4:53 pm-3:40 pm

2 stops19h 47m

Porto Alegre Salgado Filho

Thu 1/15

6:25 pm-1:51 pm

2 stops22h 26m

$1,391

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Wed 12/31

11:58 am-5:05 pm

2 stops26h 07m

Porto Alegre Salgado Filho

Wed 1/7

6:00 pm-3:18 pm

2 stops24h 18m

$1,398

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Tue 12/30

11:58 am-5:20 pm

2 stops26h 22m

Porto Alegre Salgado Filho

Wed 1/7

6:00 pm-5:42 pm

2 stops26h 42m

$1,473

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Thu 1/1

11:58 am-5:05 pm

2 stops26h 07m

Porto Alegre Salgado Filho

Wed 1/7

6:00 pm-3:18 pm

2 stops24h 18m

$1,548

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Wed 12/31

11:58 am-5:05 pm

2 stops26h 07m

Porto Alegre Salgado Filho

Fri 1/9

6:00 pm-3:18 pm

2 stops24h 18m

$1,625

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Sun 3/1

8:45 pm-2:35 pm

1 stop14h 50m

Porto Alegre Salgado Filho

Wed 3/4

3:25 pm-5:20 am

1 stop16h 55m

$1,653

HoustonPorto Alegre

IAH - POA

IAHPOA

Houston George Bush Intcntl

Sun 3/1

4:40 pm-4:10 pm

2 stops20h 30m

Porto Alegre Salgado Filho

Wed 3/4

3:25 pm-5:20 am

1 stop16h 55m

$1,658

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 Porto Alegre from

How to get the cheapest flight ticket from Houston 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 time of day to depart on your flight to Porto Alegre?

Our most recent data shows that the best time of day to fly to Porto Alegre is in the afternoon. Flights from Houston to Porto Alegre during this time can be as low as $1,141. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,848 on average. Flights to Porto Alegre from Houston in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Houston to Porto Alegre flight deals and tips

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

Direct flights

None
There are no direct flights from Houston to Porto Alegre. There are no popular flight routes from Houston to Porto Alegre.
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  • How far is Houston to Porto Alegre Salgado Filho by plane?

    Porto Alegre Salgado Filho is 5046.4 mi away from Houston. A reasonable flight in good conditions will take 11h 51m.

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

    Prices for flights from Houston to Porto Alegre Salgado Filho Airport refresh daily.

  • How old do you have to be to fly from Houston 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 Houston to Porto Alegre Salgado Filho Airport.

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

    The necessary travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 Houston to Porto Alegre?

Finding the right flight to Porto Alegre from Houston 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 Porto Alegre quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Houston to Porto Alegre flights to just show those with flexible booking policies.

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

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

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

Yes momondo offers price alerts on flights to Porto Alegre from Houston. 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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