Cheap flights from Seattle to Porto Alegre from $523
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Porto Alegre departing on 5/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Seattle to Porto Alegre
Cheap round-trip flights
Cheap one-way flights
United Airlines flights from Seattle to Porto Alegre
Our best United Airlines deals on Seattle to Porto Alegre flight tickets
Copa Airlines flights from Seattle to Porto Alegre
Our best Copa Airlines deals on Seattle to Porto Alegre flight tickets
See travel insights to Porto Alegre from
How to get the cheapest flight ticket from Seattle 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 Thursday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $858. On the other hand, Saturday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,654.
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 evening. Flights from Seattle to Porto Alegre during this time can be as low as $869. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,038 on average. Flights to Porto Alegre from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
When to book flights from Seattle to Porto Alegre
Cheap Seattle to Porto Alegre (SEA to POA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Porto Alegre
How far is Seattle/Tacoma Intl to Porto Alegre Salgado Filho by plane?
The distance between Seattle/Tacoma Intl and Porto Alegre Salgado Filho is about 6933.3 mi. In terms of flight time, this usually takes a little over 21h 45m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Porto Alegre Salgado Filho Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Porto Alegre Salgado Filho Airport were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Porto Alegre Salgado Filho Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Porto Alegre Salgado Filho Airport is 1 as of April 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Porto Alegre Salgado Filho Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Porto Alegre Salgado Filho Airport.
What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?
The travel and health documents you'll need for your trip to Porto Alegre Salgado Filho Airport 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 Porto Alegre Salgado Filho Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Porto Alegre?
Based on momondo bookings for flights between Seattle and Porto Alegre, the leading airline is American Airlines, making up 100% of the total bookings.
Best airlines flying from Seattle to Porto Alegre
Compare and see reviews for airlines that fly from Seattle to Porto Alegre with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $869 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Porto Alegre?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Porto Alegre. momondo saves you time and could save you money on your trip.
Can I find flights from Seattle to Porto Alegre with flexible booking policies on momondo?
momondo does allow users to show only those flights to Porto Alegre from Seattle which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Seattle to Porto Alegre?
momondo provides multiple filters to help you find the best flight to Porto Alegre from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Seattle to Porto Alegre right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Seattle to Porto Alegre flights. All you need is a valid email address and we will do the rest; it is that quick and easy.