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Cheap flights from Porto Alegre to Washington from $657

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Porto Alegre to Washington departing on 3/18. 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 Porto Alegre to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:10 pm - 10:45 pm
POA
-
SEA
33h 35m2 stops
United Airlines Logo
6:45 am - 2:20 pm
SEA
-
POA
27h 35m2 stops
$657United Airlines
Wed, Mar 18 - Tue, Mar 31
United Airlines Logo
3:25 pm - 7:03 pm
POA
-
SEA
31h 38m2 stops
United Airlines Logo
7:00 am - 4:20 pm
SEA
-
POA
29h 20m2 stops
$667United Airlines
Wed, Mar 18 - Sun, Mar 22
United Airlines Logo
3:25 pm - 10:45 pm
POA
-
SEA
35h 20m2 stops
United Airlines Logo
7:00 am - 2:20 pm
SEA
-
POA
27h 20m2 stops
$671United Airlines
Wed, Mar 18 - Sun, Mar 22
United Airlines Logo
5:10 pm - 7:03 pm
POA
-
SEA
29h 53m2 stops
United Airlines Logo
2:10 pm - 6:20 pm
SEA
-
POA
48h 10m2 stops
$767United Airlines
Wed, Mar 18 - Tue, Mar 31
United Airlines Logo
3:25 pm - 7:03 pm
POA
-
SEA
31h 38m2 stops
United Airlines Logo
6:20 am - 1:10 pm
SEA
-
POA
26h 50m3 stops
$847United Airlines
Wed, Mar 18 - Tue, Mar 31
LATAM Airlines Logo
7:05 pm - 7:33 pm
POA
-
SEA
28h 28m2 stops
LATAM Airlines Logo
8:25 am - 11:35 am
SEA
-
POA
23h 10m2 stops
$904LATAM Airlines
Fri, May 8 - Wed, May 20
Multiple Airlines Logo
6:00 pm - 7:48 pm
POA
-
SEA
29h 48m2 stops
Multiple Airlines Logo
10:50 pm - 2:10 am
SEA
-
POA
23h 20m2 stops
$944Multiple Airlines
Wed, Mar 18 - Tue, Mar 31
Multiple Airlines Logo
2:05 pm - 3:01 pm
POA
-
SEA
28h 56m3 stops
Multiple Airlines Logo
10:10 am - 4:20 pm
SEA
-
POA
26h 10m3 stops
$949Multiple Airlines
Wed, Mar 18 - Tue, Mar 31
LATAM Airlines Logo
6:00 pm - 6:53 pm
POA
-
PDX
29h 53m2 stops
LATAM Airlines Logo
7:00 am - 2:05 pm
PDX
-
POA
26h 05m2 stops
$1,473LATAM Airlines
Sat, Dec 20 - Tue, Jan 6
American Airlines Logo
6:25 pm - 12:50 pm
POA
-
PDX
23h 25m3 stops
American Airlines Logo
12:35 pm - 5:45 pm
PDX
-
POA
24h 10m2 stops
$2,591American Airlines
Sat, Dec 20 - Tue, Jan 6

United Airlines flights from Porto Alegre to State of Washington

Our best United Airlines deals on Porto Alegre to State of Washington flight tickets
United Airlines
Mar 18
POA3:25 pmPorto Alegre Salgado Filho
31h 38m
2 stops
SEA7:03 pmSeattle/Tacoma Intl
Mar 31
SEA6:20 amSeattle/Tacoma Intl
28h 00m
3 stops
POA2:20 pmPorto Alegre Salgado Filho
$657
Find similar
United Airlines
Mar 18
POA3:25 pmPorto Alegre Salgado Filho
31h 38m
2 stops
SEA7:03 pmSeattle/Tacoma Intl
Mar 22
SEA7:00 amSeattle/Tacoma Intl
29h 20m
2 stops
POA4:20 pmPorto Alegre Salgado Filho
$667
Find similar
United Airlines
Mar 18
POA3:25 pmPorto Alegre Salgado Filho
35h 20m
2 stops
SEA10:45 pmSeattle/Tacoma Intl
Mar 22
SEA7:00 amSeattle/Tacoma Intl
27h 20m
2 stops
POA2:20 pmPorto Alegre Salgado Filho
$671
Find similar

GOL flights from Porto Alegre to State of Washington

Our best GOL deals on Porto Alegre to State of Washington flight tickets
GOL
May 8
POA5:20 amPorto Alegre Salgado Filho
21h 56m
2 stops
SEA11:16 pmSeattle/Tacoma Intl
May 24
SEA1:01 pmSeattle/Tacoma Intl
41h 39m
2 stops
POA10:40 amPorto Alegre Salgado Filho
$1,050
Find similar
GOL
Jan 22
POA1:40 pmPorto Alegre Salgado Filho
24h 57m
2 stops
SEA9:37 amSeattle/Tacoma Intl
Mar 2
SEA11:50 amSeattle/Tacoma Intl
25h 00m
2 stops
POA5:50 pmPorto Alegre Salgado Filho
$1,065
Find similar
GOL
Dec 23
POA10:35 amPorto Alegre Salgado Filho
33h 19m
2 stops
SEA2:54 pmSeattle/Tacoma Intl
Jan 5
SEA11:49 amSeattle/Tacoma Intl
28h 11m
2 stops
POA9:00 pmPorto Alegre Salgado Filho
$1,258
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Porto Alegre to State of Washington 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 December 10, 2025.
Use the filters below to find and compare flights from Porto Alegre to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

5:10 pm-10:45 pm

2 stops33h 35m

Seattle/Tacoma Intl

Tue 3/31

6:45 am-2:20 pm

2 stops27h 35m

$657

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

3:25 pm-7:03 pm

2 stops31h 38m

Seattle/Tacoma Intl

Sun 3/22

7:00 am-4:20 pm

2 stops29h 20m

$667

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

3:25 pm-10:45 pm

2 stops35h 20m

Seattle/Tacoma Intl

Sun 3/22

7:00 am-2:20 pm

2 stops27h 20m

$671

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

5:10 pm-7:03 pm

2 stops29h 53m

Seattle/Tacoma Intl

Tue 3/31

2:10 pm-6:20 pm

2 stops48h 10m

$767

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

3:25 pm-7:03 pm

2 stops31h 38m

Seattle/Tacoma Intl

Tue 3/31

6:20 am-1:10 pm

3 stops26h 50m

$847

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Fri 5/8

7:05 pm-7:33 pm

2 stops28h 28m

Seattle/Tacoma Intl

Wed 5/20

8:25 am-11:35 am

2 stops23h 10m

$904

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

6:00 pm-7:48 pm

2 stops29h 48m

Seattle/Tacoma Intl

Tue 3/31

10:50 pm-2:10 am

2 stops23h 20m

$944

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 3/18

2:05 pm-3:01 pm

3 stops28h 56m

Seattle/Tacoma Intl

Tue 3/31

10:10 am-4:20 pm

3 stops26h 10m

$949

Porto AlegrePortland

POA - PDX

POAPDX

Porto Alegre Salgado Filho

Sat 12/20

6:00 pm-6:53 pm

2 stops29h 53m

Portland

Tue 1/6

7:00 am-2:05 pm

2 stops26h 05m

$1,473

Porto AlegrePortland

POA - PDX

POAPDX

Porto Alegre Salgado Filho

Sat 12/20

6:25 pm-12:50 pm

3 stops23h 25m

Portland

Tue 1/6

12:35 pm-5:45 pm

2 stops24h 10m

$2,591

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Porto Alegre to State of Washington

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 State of Washington?

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $1,178. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,379 on average. Flights to State of Washington from Porto Alegre in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Porto Alegre to State of Washington flight deals and tips

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

Fastest flight time

21h 52m

Direct flights

None
The fastest flight from Porto Alegre to State of Washington takes 21h 52m
There are no direct flights from Porto Alegre to State of Washington. There are no popular flight routes from Porto Alegre to State of Washington.
Search flight deals

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

    Prices for flights from Porto Alegre Salgado Filho Airport to Washington were last updated today.

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

    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 Porto Alegre Salgado Filho Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents you'll need for your trip to Washington 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 Washington. 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 Porto Alegre to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Porto Alegre to Washington. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Washington from Porto Alegre which offer a flexible booking policy as well as other useful filters and features.

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

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

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

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