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Cheap flights from Las Vegas to Porto Alegre from $369

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Porto Alegre departing on 10/28. 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
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 Las Vegas to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:59 pm - 4:10 pmLAS-POA
36h 11m2 stops
United Airlines Logo
5:10 pm - 2:04 pmPOA-LAS
24h 54m2 stops
$627United Airlines
Find Deal
Thu, Mar 19 - Mon, Mar 23
United Airlines Logo
12:59 am - 2:35 pmLAS-POA
33h 36m2 stops
United Airlines Logo
3:25 pm - 12:54 pmPOA-LAS
25h 29m2 stops
$706United Airlines
Find Deal
Wed, Mar 18 - Mon, Mar 23
United Airlines Logo
11:59 pm - 3:05 pmLAS-POA
35h 06m2 stops
United Airlines Logo
3:25 pm - 12:54 pmPOA-LAS
25h 29m2 stops
$767United Airlines
Find Deal
Thu, Mar 19 - Mon, Mar 23
GOL Logo
12:56 pm - 5:50 pmLAS-POA
23h 54m2 stops
GOL Logo
1:40 pm - 11:59 pmPOA-LAS
39h 19m2 stops
$856GOL
Find Deal
Wed, Nov 26 - Mon, Dec 1
American Airlines Logo
1:10 pm - 5:10 pmLAS-POA
23h 00m2 stops
American Airlines Logo
5:50 pm - 10:46 amPOA-LAS
21h 56m2 stops
$898American Airlines
Find Deal
Wed, Nov 26 - Mon, Dec 1
Copa Airlines Logo
1:58 am - 12:25 amLAS-POA
18h 27m1 stop
Copa Airlines Logo
1:30 am - 11:55 pmPOA-LAS
26h 25m2 stops
$1,039Copa Airlines
Find Deal
Wed, Mar 18 - Sun, Mar 22
Copa Airlines Logo
1:58 am - 12:25 amLAS-POA
18h 27m1 stop
Copa Airlines Logo
1:30 am - 8:22 pmPOA-LAS
22h 52m2 stops
$1,059Copa Airlines
Find Deal
Wed, Mar 18 - Sun, Mar 22
LATAM Airlines Logo
12:43 am - 6:30 amLAS-POA
24h 47m2 stops
LATAM Airlines Logo
6:00 pm - 5:32 pmPOA-LAS
28h 32m2 stops
$1,154LATAM Airlines
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Tue, Nov 25 - Mon, Dec 1
LATAM Airlines Logo
12:43 am - 6:30 amLAS-POA
24h 47m2 stops
LATAM Airlines Logo
6:00 pm - 12:31 pmPOA-LAS
23h 31m2 stops
$1,266LATAM Airlines
Find Deal
Tue, Nov 25 - Mon, Dec 1
American Airlines Logo
9:17 am - 9:55 amLAS-POA
19h 38m3 stops
American Airlines Logo
5:50 pm - 10:46 amPOA-LAS
21h 56m2 stops
$2,041American Airlines
Find Deal
Wed, Nov 26 - Mon, Dec 1

United Airlines flights from Las Vegas to Porto Alegre

Our best United Airlines deals on Las Vegas to Porto Alegre flight tickets
United Airlines
Mar 19
LAS11:59 pmLas Vegas Harry Reid Intl
36h 11m
2 stops
POA4:10 pmPorto Alegre Salgado Filho
Mar 23
POA5:10 pmPorto Alegre Salgado Filho
24h 54m
2 stops
LAS2:04 pmLas Vegas Harry Reid Intl
$627
Find similar
United Airlines
Mar 18
LAS12:59 amLas Vegas Harry Reid Intl
33h 36m
2 stops
POA2:35 pmPorto Alegre Salgado Filho
Mar 23
POA3:25 pmPorto Alegre Salgado Filho
25h 29m
2 stops
LAS12:54 pmLas Vegas Harry Reid Intl
$706
Find similar
United Airlines
Mar 19
LAS11:59 pmLas Vegas Harry Reid Intl
35h 06m
2 stops
POA3:05 pmPorto Alegre Salgado Filho
Mar 23
POA3:25 pmPorto Alegre Salgado Filho
25h 29m
2 stops
LAS12:54 pmLas Vegas Harry Reid Intl
$767
Find similar

LATAM Airlines flights from Las Vegas to Porto Alegre

Our best LATAM Airlines deals on Las Vegas to Porto Alegre flight tickets
LATAM Airlines
Nov 25
LAS12:43 amLas Vegas Harry Reid Intl
24h 47m
2 stops
POA6:30 amPorto Alegre Salgado Filho
Dec 1
POA6:00 pmPorto Alegre Salgado Filho
28h 32m
2 stops
LAS5:32 pmLas Vegas Harry Reid Intl
$1,154
Find similar
LATAM Airlines
Nov 25
LAS12:43 amLas Vegas Harry Reid Intl
24h 47m
2 stops
POA6:30 amPorto Alegre Salgado Filho
Dec 1
POA6:00 pmPorto Alegre Salgado Filho
23h 31m
2 stops
LAS12:31 pmLas Vegas Harry Reid Intl
$1,266
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas 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 23, 2025.
Use the filters below to find and compare flights from Las Vegas to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Thu 3/19

11:59 pm-4:10 pm

2 stops36h 11m

Porto Alegre Salgado Filho

Mon 3/23

5:10 pm-2:04 pm

2 stops24h 54m

$627

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Wed 3/18

12:59 am-2:35 pm

2 stops33h 36m

Porto Alegre Salgado Filho

Mon 3/23

3:25 pm-12:54 pm

2 stops25h 29m

$706

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Thu 3/19

11:59 pm-3:05 pm

2 stops35h 06m

Porto Alegre Salgado Filho

Mon 3/23

3:25 pm-12:54 pm

2 stops25h 29m

$767

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Wed 11/26

12:56 pm-5:50 pm

2 stops23h 54m

Porto Alegre Salgado Filho

Mon 12/1

1:40 pm-11:59 pm

2 stops39h 19m

$856

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Wed 11/26

1:10 pm-5:10 pm

2 stops23h 00m

Porto Alegre Salgado Filho

Mon 12/1

5:50 pm-10:46 am

2 stops21h 56m

$898

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Wed 3/18

1:58 am-12:25 am

1 stop18h 27m

Porto Alegre Salgado Filho

Sun 3/22

1:30 am-11:55 pm

2 stops26h 25m

$1,039

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Wed 3/18

1:58 am-12:25 am

1 stop18h 27m

Porto Alegre Salgado Filho

Sun 3/22

1:30 am-8:22 pm

2 stops22h 52m

$1,059

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Tue 11/25

12:43 am-6:30 am

2 stops24h 47m

Porto Alegre Salgado Filho

Mon 12/1

6:00 pm-5:32 pm

2 stops28h 32m

$1,154

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Tue 11/25

12:43 am-6:30 am

2 stops24h 47m

Porto Alegre Salgado Filho

Mon 12/1

6:00 pm-12:31 pm

2 stops23h 31m

$1,266

Las VegasPorto Alegre

LAS - POA

LASPOA

Las Vegas Harry Reid Intl

Wed 11/26

9:17 am-9:55 am

3 stops19h 38m

Porto Alegre Salgado Filho

Mon 12/1

5:50 pm-10:46 am

2 stops21h 56m

$2,041

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 Las Vegas 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 day to depart on your flight to Porto Alegre?

Our data shows that Friday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $695. On the other hand, Tuesday is the most expensive day to depart from Las Vegas because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $946.

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 at noon. Flights from Las Vegas to Porto Alegre during this time can be as low as $729. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $822 on average. Flights to Porto Alegre from Las Vegas in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Las Vegas to Porto Alegre

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

Cheap Las Vegas to Porto Alegre (LAS to POA) flight deals and tips

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

Direct flights

None
There are no direct flights from Las Vegas to Porto Alegre. There are no popular flight routes from Las Vegas to Porto Alegre.
Search flight deals

  • How far is Las Vegas Harry Reid Intl to Porto Alegre Salgado Filho by plane?

    A flight from Las Vegas Harry Reid Intl to Porto Alegre Salgado Filho will travel around 6167.1 mi. 18h 27m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Porto Alegre Salgado Filho Airport?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Porto Alegre Salgado Filho Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Las Vegas Harry Reid Intl Airport 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 Las Vegas to Porto Alegre?

It is quick and easy to find Las Vegas to Porto Alegre flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto Alegre that suits you.

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

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

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

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 Las Vegas to Porto Alegre.

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

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

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