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Cheap flights from the United States to Porto Alegre from $254

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Porto Alegre departing on 9/20. 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

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Find the cheapest flights from the United States to Porto Alegre

Recent round-trip flight deals from the United States to Porto Alegre

Enter your travel dates to find the best prices.
Copa Airlines Logo
6:00 am - 12:20 am
MIA
-
POA
17h 20m
1 stop
Copa Airlines Logo
1:20 am - 7:58 pm
POA
-
MIA
19h 38m
1 stop
$499Copa Airlines
qui, mai 7 - qua, mai 20
Copa Airlines Logo
6:24 am - 12:20 am
MIA
-
POA
16h 56m
1 stop
Copa Airlines Logo
1:20 am - 10:42 pm
POA
-
MIA
22h 22m
1 stop
$519Copa Airlines
seg, mai 4 - sáb, mai 9
GOL Logo
10:35 pm - 11:45 am
MIA
-
POA
12h 10m
1 stop
GOL Logo
5:10 am - 4:50 pm
POA
-
MIA
12h 40m
1 stop
$586GOL
qua, abr 29 - seg, mai 4
GOL Logo
6:20 pm - 11:30 am
MIA
-
POA
16h 10m
1 stop
GOL Logo
5:20 am - 4:50 pm
POA
-
MIA
12h 30m
1 stop
$603GOL
sáb, ago 8 - dom, ago 23
LATAM Airlines Logo
1:00 pm - 5:00 pm
IAD
-
POA
27h 00m
2 stops
LATAM Airlines Logo
7:25 am - 12:10 am
POA
-
IAD
17h 45m
2 stops
$688LATAM Airlines
ter, set 15 - seg, set 28
LATAM Airlines Logo
1:11 pm - 6:15 pm
IAD
-
POA
28h 04m
2 stops
LATAM Airlines Logo
10:05 am - 11:39 am
POA
-
IAD
26h 34m
2 stops
$769LATAM Airlines
seg, jun 1 - qua, jun 10
United Airlines Logo
7:05 am - 9:45 am
SFO
-
POA
22h 40m
2 stops
United Airlines Logo
3:30 pm - 12:18 pm
POA
-
SFO
24h 48m
2 stops
$819United Airlines
ter, set 8 - qua, set 23
United Airlines Logo
1:50 pm - 2:20 pm
SFO
-
POA
20h 30m
2 stops
United Airlines Logo
3:25 pm - 1:11 pm
POA
-
SFO
25h 46m
2 stops
$820United Airlines
ter, set 8 - qui, set 24
Delta Logo
11:57 pm - 6:15 am
SFO
-
POA
26h 18m
2 stops
Delta Logo
5:50 pm - 7:20 pm
POA
-
SFO
29h 30m
2 stops
$834Delta
ter, mai 5 - ter, jun 2
Delta Logo
6:29 pm - 6:15 am
LGA
-
POA
34h 46m
2 stops
Delta Logo
7:25 am - 10:33 am
POA
-
LGA
28h 08m
2 stops
$920Delta
ter, abr 7 - seg, mai 11

American Airlines flights from United States to Porto Alegre

Our best American Airlines deals on United States to Porto Alegre flight tickets
American Airlines
Apr 14
MIA8:00 pmMiami
13h 55m
1 stop
POA10:55 amPorto Alegre Salgado Filho
Apr 29
POA1:20 pmPorto Alegre Salgado Filho
16h 00m
1 stop
MIA4:20 amMiami
$655
American Airlines
Sep 15
IAD2:46 pmWashington, D.C. Dulles Intl
23h 49m
2 stops
POA3:35 pmPorto Alegre Salgado Filho
Sep 28
POA2:00 pmPorto Alegre Salgado Filho
25h 00m
2 stops
IAD2:00 pmWashington, D.C. Dulles Intl
$680
American Airlines
Apr 10
MIA8:00 pmMiami
13h 45m
1 stop
POA10:45 amPorto Alegre Salgado Filho
Apr 25
POA2:40 pmPorto Alegre Salgado Filho
17h 05m
1 stop
MIA6:45 amMiami
$753

United Airlines flights from United States to Porto Alegre

Our best United Airlines deals on United States to Porto Alegre flight tickets
United Airlines
Sep 8
SFO7:05 amSan Francisco
22h 40m
2 stops
POA9:45 amPorto Alegre Salgado Filho
Sep 23
POA3:30 pmPorto Alegre Salgado Filho
24h 48m
2 stops
SFO12:18 pmSan Francisco
$819
United Airlines
Sep 8
SFO1:50 pmSan Francisco
20h 30m
2 stops
POA2:20 pmPorto Alegre Salgado Filho
Sep 24
POA3:25 pmPorto Alegre Salgado Filho
25h 46m
2 stops
SFO1:11 pmSan Francisco
$820
United Airlines
Sep 6
SFO6:54 pmSan Francisco
34h 51m
2 stops
POA9:45 amPorto Alegre Salgado Filho
Sep 23
POA3:30 pmPorto Alegre Salgado Filho
24h 48m
2 stops
SFO12:18 pmSan Francisco
$831

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MiamiPorto Alegre

MIA - POA

MIAPOA

Miami

qui 5/7

6:00 am-12:20 am

1 stop17h 20m

Porto Alegre Salgado Filho

qua 5/20

1:20 am-7:58 pm

1 stop19h 38m

$499

MiamiPorto Alegre

MIA - POA

MIAPOA

Miami

seg 5/4

6:24 am-12:20 am

1 stop16h 56m

Porto Alegre Salgado Filho

sáb 5/9

1:20 am-10:42 pm

1 stop22h 22m

$519
Quickest round-trip

MiamiPorto Alegre

MIA - POA

MIAPOA

Miami

qua 4/29

10:35 pm-11:45 am

1 stop12h 10m

Porto Alegre Salgado Filho

seg 5/4

5:10 am-4:50 pm

1 stop12h 40m

$586

MiamiPorto Alegre

MIA - POA

MIAPOA

Miami

sáb 8/8

6:20 pm-11:30 am

1 stop16h 10m

Porto Alegre Salgado Filho

dom 8/23

5:20 am-4:50 pm

1 stop12h 30m

$603

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

ter 9/15

1:00 pm-5:00 pm

2 stops27h 00m

Porto Alegre Salgado Filho

seg 9/28

7:25 am-12:10 am

2 stops17h 45m

$688

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

seg 6/1

1:11 pm-6:15 pm

2 stops28h 04m

Porto Alegre Salgado Filho

qua 6/10

10:05 am-11:39 am

2 stops26h 34m

$769

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

ter 9/8

7:05 am-9:45 am

2 stops22h 40m

Porto Alegre Salgado Filho

qua 9/23

3:30 pm-12:18 pm

2 stops24h 48m

$819

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

ter 9/8

1:50 pm-2:20 pm

2 stops20h 30m

Porto Alegre Salgado Filho

qui 9/24

3:25 pm-1:11 pm

2 stops25h 46m

$820

San FranciscoPorto Alegre

SFO - POA

SFOPOA

San Francisco

ter 5/5

11:57 pm-6:15 am

2 stops26h 18m

Porto Alegre Salgado Filho

ter 6/2

5:50 pm-7:20 pm

2 stops29h 30m

$834

New YorkPorto Alegre

LGA - POA

LGAPOA

New York LaGuardia

ter 4/7

6:29 pm-6:15 am

2 stops34h 46m

Porto Alegre Salgado Filho

seg 5/11

7:25 am-10:33 am

2 stops28h 08m

$920

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 United States 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 month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from United States is in November. Flight prices, which tend to average around $695, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in November, then September is your next best option. Flight prices from United States to Porto Alegre during September average around $702.

Can stopping save me money on United States to Porto Alegre flights?

You could potentially save up to 1% on your flight if you consider stops on a United States to Porto Alegre flight.

Cheap United States to Porto Alegre flight deals and tips

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

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from United States to Porto Alegre takes 13h 05m
There are no direct flights from United States to Porto Alegre. There are no popular flight routes from United States to Porto Alegre.
Search flight deals

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

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

  • How many operators does momondo search for flights from United States to Porto Alegre Salgado Filho Airport?

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

    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 United States 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.

Best airlines flying from United States to Porto Alegre

Compare and see reviews for airlines that fly from United States to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $243Free CancellationRating
7.4
9,493 reviews
Search United Airlines flights
Copa AirlinesPriceFrom $270Free CancellationRating
7.5
1,579 reviews
Search Copa Airlines flights
DeltaPriceFrom $349Free CancellationRating
7.9
8,343 reviews
Search Delta flights
American AirlinesPriceFrom $485Free CancellationRating
7.1
11,509 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $519Free CancellationRating
7.4
1,902 reviews
Search LATAM Airlines flights
GOLPriceFrom $526Free CancellationRating
7.3
1,199 reviews
Search GOL flights

Why use momondo?

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

Finding the right flight to Porto Alegre from United States 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 United States to Porto Alegre with flexible booking policies on momondo?

Flights from United States 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 United States 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 United States.

I’m not ready to book a flight from United States 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 United States and alert you when they change.

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