SEA - SAO

$315 Find Cheap Flights from Seattle to Sao Paulo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Sao Paulo departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Sao Paulo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Sao Paulo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Sao Paulo, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$588
Overall average: $777
LATAM Airlines
Thu 11/27Wed 12/3
SEA - GRU • 1 stop
Cheapest one-way
$315
Typical prices: $428-$657
Multiple Airlines
Sun 3/1
SEA - GRU • 2 stops
Top airlines
LATAM Airlines
Cheapest • from $588 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
May
Cheapest • 26% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sao Paulo!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Sao Paulo (SEA-SAO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Sao Paulo that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Sao Paulo

Thu, Nov 27 - Wed, Dec 3
LATAM Airlines Logo
7:20 am - 9:55 amSEA-GRU
21h 35m1 stop
LATAM Airlines Logo
10:40 pm - 2:44 pmGRU-SEA
21h 04m1 stop
$588LATAM Airlines
Find Deal
Tue, Jan 20 - Tue, Feb 3
United Airlines Logo
7:00 am - 10:20 amSEA-GRU
22h 20m2 stops
United Airlines Logo
9:45 pm - 11:32 amGRU-SEA
18h 47m1 stop
$589United Airlines
Find Deal
Wed, Nov 5 - Wed, Dec 3
Delta Logo
7:25 am - 5:40 amSEA-GRU
17h 15m1 stop
Delta Logo
11:45 pm - 12:41 pmGRU-SEA
17h 56m1 stop
$590Delta
Find Deal
Thu, Nov 6 - Tue, Dec 2
Delta Logo
11:40 am - 9:35 amSEA-GRU
16h 55m1 stop
Delta Logo
9:00 pm - 10:26 amGRU-SEA
18h 26m1 stop
$591Delta
Find Deal
Wed, Nov 26 - Sun, Dec 7
LATAM Airlines Logo
6:00 am - 5:40 amSEA-GRU
18h 40m1 stop
LATAM Airlines Logo
11:10 pm - 2:44 pmGRU-SEA
20h 34m1 stop
$592LATAM Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 27
United Airlines Logo
7:00 am - 10:20 amSEA-GRU
22h 20m2 stops
United Airlines Logo
9:45 pm - 6:27 pmGRU-SEA
25h 42m2 stops
$594United Airlines
Find Deal
Wed, Mar 18 - Wed, Apr 22
American Airlines Logo
10:01 am - 8:10 amSEA-GRU
18h 09m1 stop
American Airlines Logo
10:00 pm - 2:40 pmGRU-SEA
20h 40m1 stop
$598American Airlines
Find Deal
Wed, Mar 18 - Wed, Apr 22
American Airlines Logo
10:01 am - 8:10 amSEA-GRU
18h 09m1 stop
American Airlines Logo
10:00 pm - 12:34 pmGRU-SEA
18h 34m1 stop
$603American Airlines
Find Deal
Wed, Mar 4 - Wed, Mar 18
GOL Logo
11:57 am - 9:10 amSEA-VCP
40h 13m2 stops
GOL Logo
5:55 pm - 11:21 pmVCP-SEA
33h 26m2 stops
$782GOL
Find Deal
Wed, Mar 4 - Wed, Mar 18
GOL Logo
10:02 am - 2:20 pmSEA-CGH
23h 18m2 stops
GOL Logo
6:30 am - 11:21 pmCGH-SEA
20h 51m2 stops
$787GOL
Find Deal
Booking Insights

KAYAK's insights & trends for Seattle to Sao Paulo flights

Get data-powered insights and trends into flights from Seattle to Sao Paulo to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Sao Paulo?

The average price of all round-trip flights from Seattle to Sao Paulo clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Sao Paulo on a Tuesday and more expensive on a Saturday. On your return trip to Seattle, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

What is the cheapest month to fly from Seattle to Sao Paulo?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Sao Paulo, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Sao Paulo is May, where tickets cost $550 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,312 and $996 respectively.

How far in advance should I book a flight from Seattle to Sao Paulo?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Sao Paulo, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Sao Paulo, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 1 week before departure.

Good to know

Low seasonApril
Cheapest flight$315
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 75% increase in price.
Flight from Seattle to Sao Paulo Guarulhos Airport

When to book flights from Seattle to Sao Paulo

Are your dates flexible? Find out the best times to travel from Seattle to Sao Paulo based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Sao Paulo

  • What is the cheapest flight from Seattle to Sao Paulo?

    In the last 3 days, the lowest price for a flight from Seattle to Sao Paulo was $315 for a one-way ticket and $588 for a round-trip.

  • Do I need a passport to fly between Seattle and Sao Paulo?

    Yes

  • Which aircraft models fly most regularly from Seattle to Sao Paulo?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Sao Paulo?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Sao Paulo, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Sao Paulo, Delta or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Sao Paulo are Delta and LATAM Airlines. With an average price for the route of $714 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $679 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Seattle to Sao Paulo?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Sao Paulo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Sao Paulo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sao Paulo from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Sao Paulo?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sao Paulo with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Sao Paulo?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sao Paulo from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Seattle to Sao Paulo

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Sao Paulo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Sao Paulo? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7979 reviews
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
8.2Boarding
Airline reviews

Old plane and old configuration/seats but still comfortable for a morning flight

10.0 ExcellentBraulio, Oct 2025ATL - SDQ
Read more Delta reviews

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

I’m entitled to a refund per LATAM due to the mid flight itinerary change and being stuck in São Paulo for 24 hours and needing to get a hotel. The airline was dismissive and of no help.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

Boarding was confusing with a delayed flight because there was no English translation

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Bought a ticket that included a bag and they still charged me to check it in, latam is the worst airline.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

Lost ,y connection due to a mechanical delay, huge line to get new connection and vouchers

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Flight was good but there are way to many announcements for credit cards etc.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

The worst landing I have ever had on a domestic flight. Thought we would lose the landing gear on landing in Newark. Then we spent 40 minutes trying to position the plane in the right place to be able to get the jet way to the plane. The plane arrived stopped. The announcer was that we were there. Everybody got up, then we were told to sit back down because they had to have us towed to a different position. We got towed and then everyone stood up and they told us we were in the wrong position to sit back down again, and then we got towed to a different position This did not happen immediately. It was 30 minutes while we wandered around a small section of the tarmac in Newark close to the gate, but apparently not close enough. Horrifying experience The CAB should be investigating that flight

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Boarding was organized. Old plane. Seat fairly comfortable. Business Class much too large so you don’t receive as much attention as you should considering what you pay for the seat.

I have a hand injury and the flight attendant denied to help me with luggage, she said "she couldn't help me because I should manage my own way to put the luggage on the plane" SO RUDE

I had two around 6 hours flight and they did not even offer water to us.

Overall it was good. The food was not great quality and seats were very uncomfortable. But overall the staff was very friendly and helpful.

We flew with Avianca, some how they are not n sync, making the process a bit uncomfortable.

Unfortunately it was very disappointed experience. Our first flight our was delayed 2 hours, as a consequence we missed our connecting international flight. Customer server at Miami American Airlines was very disrespectful, gave us the worst replace itenarary for the next day that we had to spend 2 hours calling Gol to get a better itinerary otherwise we wouldn't make it on time to fulfill our trip purpose. We would have missed the reason to travel all the way to Brazil if we didn't change for a better itinerary. The worst thing is that our baggage was missing for 4 days. We had no cloths for all this time, plus the aggravation to locate our baggage. Nobody knew where our baggage was. We ended up picking it up at the airport when they said that they will bring them home. Unfortunately our experience was very dissatisfied.

Flight on time, check in and flight attendants courteous and helpful. Smaller plane for international flights, tight space, no comfortable.

the boarding staff were incredibly officious. our carry-on case was borderline within dimensions but staff were not prepared to show ANY flexibility even though many others with larger carry-on luggage were allowed to board. we were understandably furious but the staff were incredibly disrespectful. we called the supervisor who eventually agreed to look on board the plane to see if there was room for our case (one case between 2 of us) and reluctantly agreed to allow us on. The staff on board were excellent though and realized we had been treated badly and were very helpful both in finding a place for our case, some distance from our seats, and helping us to retrieve it when we landed. We are regular travelers on Gol and have Diamante status and had chosen the better Conforto + seats, so we expected better treatment from the ground staff. Also the cabins are of a size that will only fit 3 cases of normal size with a large gap of about 30cm of wasted space. If our case were deemed to be oversize, which I dispute, the extra 1cm would not have made the slightest difference.

I did not like the way that baggage fees were charged. When I signed up for the flight, I knew that there were bag fees. However, the bag fees were so confusing that it felt like I was paying for overweight bags rather than just for having brought a bag with me. Also, the bag fees were based on the pair of tickets rather than per person. It seems to me that it should be first bag fee for passenger 1 and then first bag fee for passenger 2. I eventually got away with only paying $100 for two bags, but it was a struggle to understand the process. As for the flight, the seats were the standard uncomfortable seats that are on most Boeing aircraft. The airline aims to accommodate the standard height people, so us tall people are stuck. There was never an option to upgrade for leg room. It did not appear that there were any seats on the whole plane that had a little more leg room to even try to get. Other than that, I completely ignored the food for this red eye flight. I am not one to eat "dinner" at 2 am. They did not offer any drinks in the morning before landing. I recommend that you bring a bottle of water on board.

Lost luggage, people are not very nice to help you , I was just instructed to fill out a baggage claim online, they were not helpful when I had additional questions after I completed the form on my phone.

They are not ready for international flights, poor service and food, no screen info on the seat.

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Flight attendants on this flight were very attentive and friendly

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

Everything you need to know for your flight from Seattle to Sao Paulo

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.