App
Customer Support
NZD
Find Bookings
Trip.com
>
Cheap Flights
>
Brazil
>
Rio Grande do Sul
>
Porto Alegre
>
Flights from Seattle to Porto Alegre
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Seattle to Porto Alegre Starting at NZD 671

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • SEA08:05
        37h 25m
        2 stops
        POA01:30
        Tue, Mar 18|Seattle - Porto Alegre|Alaska Airlines
        NZD 671NZD 1,224
        45% OFF
        45% OFF
        NZD 1,224NZD 671

        Choose Alaska Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Mar 18, arriving at Salgado Filho International Airport. One-way Prices start from NZD 671 including taxes and charges.

      • SEA06:15
        23h 5m
        2 stops
        POA09:20
        Tue, Mar 18|Seattle - Porto Alegre|United Airlines
        NZD 741NZD 1,224
        39% OFF
        39% OFF
        NZD 1,224NZD 741

        Choose United Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with United Airlines departs from Seattle-Tacoma International Airport on Tue, Mar 18, arriving at Salgado Filho International Airport. One-way Prices start from NZD 741 including taxes and charges.

      • SEA12:52
        31h 3m
        2 stops
        POA23:55
        Fri, Mar 14|Seattle - Porto Alegre|Frontier Airlines
        NZD 773NZD 1,224
        37% OFF
        37% OFF
        NZD 1,224NZD 773

        Choose Frontier Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Fri, Mar 14, arriving at Salgado Filho International Airport. One-way Prices start from NZD 773 including taxes and charges.

      • SEA07:55
        34h 50m
        2 stops
        POA23:45
        Tue, Feb 18|Seattle - Porto Alegre|Alaska Airlines
        NZD 784
        NZD 784

        Choose Alaska Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Feb 18, arriving at Salgado Filho International Airport. One-way Prices start from NZD 784 including taxes and charges.

      • SEA06:10
        23h 10m
        2 stops
        POA09:20
        Tue, Mar 18|Seattle - Porto Alegre|American Airlines
        NZD 795
        NZD 795

        Choose American Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with American Airlines departs from Seattle-Tacoma International Airport on Tue, Mar 18, arriving at Salgado Filho International Airport. One-way Prices start from NZD 795 including taxes and charges.

      • SEA17:48
        44h 42m
        2 stops
        POA18:30
        Wed, Mar 19|Seattle - Porto Alegre|Frontier Airlines
        NZD 812
        NZD 812

        Choose Frontier Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Wed, Mar 19, arriving at Salgado Filho International Airport. One-way Prices start from NZD 812 including taxes and charges.

      • SEA22:17
        20h 28m
        2 stops
        POA23:45
        Tue, Feb 18|Seattle - Porto Alegre|American Airlines
        NZD 826
        NZD 826

        Choose American Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with American Airlines departs from Seattle-Tacoma International Airport on Tue, Feb 18, arriving at Salgado Filho International Airport. One-way Prices start from NZD 826 including taxes and charges.

      • SEA15:58
        46h 32m
        2 stops
        POA18:30
        Wed, Mar 19|Seattle - Porto Alegre|Alaska Airlines
        NZD 862
        NZD 862

        Choose Alaska Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Wed, Mar 19, arriving at Salgado Filho International Airport. One-way Prices start from NZD 862 including taxes and charges.

      • SEA15:01
        47h 29m
        2 stops
        POA18:30
        Wed, Mar 19|Seattle - Porto Alegre|United Airlines
        NZD 865
        NZD 865

        Choose United Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with United Airlines departs from Seattle-Tacoma International Airport on Wed, Mar 19, arriving at Salgado Filho International Airport. One-way Prices start from NZD 865 including taxes and charges.

      • SEA19:26
        43h 4m
        2 stops
        POA18:30
        Wed, Mar 19|Seattle - Porto Alegre|American Airlines
        NZD 912
        NZD 912

        Choose American Airlines flights from Seattle to Porto Alegre. The one-way connecting flight with American Airlines departs from Seattle-Tacoma International Airport on Wed, Mar 19, arriving at Salgado Filho International Airport. One-way Prices start from NZD 912 including taxes and charges.

      • SEA01:00 pm
        3h 5m
        Nonstop
        POA02:00 pm
        Wed, Feb 12|Seattle - Porto Alegre|Alaska Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Seattle to Porto Alegre flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA6420

    American Airlines

    06:00

    SEA

    2.9h

    08:54

    LAX

    SMTWTFS
    Search

  2. LA8087

    LATAM Airlines

    13:50

    LAX

    11.8h

    05:40

    GRU

    SM--TF-

  3. LA3416

    LATAM Airlines

    07:40

    GRU

    1.8h

    09:25

    POA

    SMTWTFS

  4. UA1788

    United Airlines

    07:00

    SEA

    4.4h

    13:23

    IAH

    SMTWTFS
    Search

  5. UA062

    United Airlines

    20:50

    IAH

    9.7h

    09:30

    GRU

    SMTWTFS

  6. AD2820

    Azul Airlines

    15:10

    GRU

    1.7h

    16:50

    POA

    SMTWTF-

  7. UA1373

    United Airlines

    07:00

    SEA

    8.1h

    17:04

    IAH

    SMTWTFS
    Search

  8. UA062

    United Airlines

    20:50

    IAH

    9.7h

    09:30

    GRU

    SMTWTFS

  9. UA7346

    United Airlines

    12:20

    GRU

    1.7h

    14:00

    POA

    --T-TFS

  10. DL506

    Delta Air Lines

    07:30

    SEA

    5.9h

    16:22

    MIA

    SMTWTFS
    Search

  11. DL6057

    Delta Air Lines

    20:25

    MIA

    8.3h

    05:40

    GRU

    SMTWTFS

  12. LA3800

    LATAM Airlines

    09:55

    CGH

    1.8h

    11:40

    POA

    SMTWTF-

  13. AS305

    Alaska Airlines

    07:56

    SEA

    6.0h

    16:55

    MIA

    SMTWTFS
    Search

  14. LA8191

    LATAM Airlines

    20:25

    MIA

    8.3h

    05:40

    GRU

    SMTWTFS

  15. LA3150

    LATAM Airlines

    08:35

    CGH

    1.8h

    10:20

    POA

    SMTWTFS

  16. AS305

    Alaska Airlines

    07:56

    SEA

    6.0h

    16:55

    MIA

    SMTWTFS
    Search

  17. LA8191

    LATAM Airlines

    20:25

    MIA

    8.3h

    05:40

    GRU

    SMTWTFS

  18. LA4524

    LATAM Airlines

    09:45

    GRU

    1.8h

    11:30

    POA

    SMTWTFS

  19. AS398

    Alaska Airlines

    08:56

    SEA

    4.7h

    16:38

    EWR

    SMTWTFS
    Search

  20. UA149

    United Airlines

    20:35

    EWR

    9.6h

    07:10

    GRU

    SMTWTFS

  21. UA7337

    United Airlines

    15:10

    GRU

    1.7h

    16:50

    POA

    --TW---

  22. G36158

    Gol Linhas Aereas Inteligentes

    10:13

    SEA

    4.2h

    16:23

    DFW

    --TW---
    Search

  23. G36013

    Gol Linhas Aereas Inteligentes

    19:10

    DFW

    10.1h

    07:15

    GRU

    SMTWTFS

  24. G31262

    Gol Linhas Aereas Inteligentes

    16:05

    GRU

    1.8h

    17:50

    POA

    SMTWTFS

  25. AA1992

    American Airlines

    14:19

    SEA

    3.9h

    20:14

    DFW

    SMTWTFS
    Search

  26. AA963

    American Airlines

    19:31

    DFW

    10.0h

    08:30

    GRU

    SMTWTFS

  27. AD2820

    Azul Airlines

    15:10

    GRU

    1.7h

    16:50

    POA

    SMTWTF-

  28. AA1471

    American Airlines

    22:17

    SEA

    5.7h

    07:00

    MIA

    SMTWTFS
    Search

  29. G39503

    Gol Linhas Aereas Inteligentes

    09:45

    MIA

    7.8h

    19:30

    BSB

    SMTWTFS

  30. G31738

    Gol Linhas Aereas Inteligentes

    21:00

    BSB

    2.7h

    23:40

    POA

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Seattle to Porto Alegre

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from Seattle (SEA) to Porto Alegre (POA) the cheapest?

    Airlines adjust prices for flights from Seattle to Porto Alegre based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Seattle (SEA) to Porto Alegre (POA) cost?

    According to Trip.com's data, the lowest price is around NZD 3,158.

  • What is the transportation method from the main airport to downtown in Porto Alegre?

    • The distance from Salgado Filho International Airport to downtown is about 5 km. It takes about 20 minutes by taxi.

How to find a cheap flight from Seattle to Porto Alegre

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Porto Alegre. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Seattle to Porto Alegre

Off-season for travelMarch
Peak season for travelNovember
Flight distance11,153.16 km
Popular airlineAeromexico

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.