$227 Find Cheap Flights from Seattle to South America

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 South America departing on 5/24. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Seattle to South America

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lima
Lima2 stops$738
Bogotá
Bogotá1 stop$558
Buenos Aires
Buenos Aires1 stop$890
Sao Paulo
Sao Paulo2 stops$737
Rio de Janeiro
Rio de Janeiro2 stops$1,010
Santiago
Santiago1 stop$930
Cartagena
Cartagena2 stops$668
Quito
Quito2 stops$774
Guayaquil
Guayaquil1 stop$636
Cali
Cali2 stops$600
Cusco
Cusco2 stops$823
Pereira
Pereira2 stops$697
Barranquilla
Barranquilla2 stops$692
Montevideo
Montevideo2 stops$1,261
Asuncion
Asuncion2 stops$962
Lima
Lima2 stops$738
Bogotá
Bogotá1 stop$558
Buenos Aires
Buenos Aires1 stop$890
Sao Paulo
Sao Paulo2 stops$737
Rio de Janeiro
Rio de Janeiro2 stops$1,010
Santiago
Santiago1 stop$930
Cartagena
Cartagena2 stops$668
Quito
Quito2 stops$774
Guayaquil
Guayaquil1 stop$636
Cali
Cali2 stops$600
Cusco
Cusco2 stops$823
Pereira
Pereira2 stops$697
Barranquilla
Barranquilla2 stops$692
Montevideo
Montevideo2 stops$1,261
Asuncion
Asuncion2 stops$962

Book Cheap Seattle to South America Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to South America 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 South America

Mon, May 4 - Thu, May 14
United Airlines Logo
11:59 pm - 9:10 pm
SEA
-
MDE
19h 11m
1 stop
United Airlines Logo
9:45 am - 7:44 pm
MDE
-
SEA
11h 59m
1 stop
$557United Airlines
Mon, May 25 - Thu, Jun 4
Multiple Airlines Logo
7:55 am - 5:25 am
SEA
-
BOG
19h 30m
1 stop
Multiple Airlines Logo
8:20 am - 10:28 pm
BOG
-
SEA
16h 08m
1 stop
$558Multiple Airlines
Wed, Jun 3 - Tue, Jun 9
American Airlines Logo
5:15 am - 11:50 pm
SEA
-
MDE
16h 35m
2 stops
American Airlines Logo
6:00 am - 12:08 am
MDE
-
SEA
20h 08m
1 stop
$562American Airlines
Mon, May 11 - Tue, May 19
LATAM Airlines Logo
11:35 pm - 5:05 am
SEA
-
MDE
27h 30m
2 stops
LATAM Airlines Logo
7:00 am - 9:55 pm
MDE
-
SEA
16h 55m
2 stops
$569LATAM Airlines
Wed, Jun 3 - Tue, Jun 9
American Airlines Logo
8:45 pm - 8:15 pm
SEA
-
MDE
21h 30m
1 stop
American Airlines Logo
6:00 am - 12:08 am
MDE
-
SEA
20h 08m
1 stop
$572American Airlines
Mon, Jun 8 - Mon, Jun 15
LATAM Airlines Logo
8:05 am - 9:20 am
SEA
-
EZE
21h 15m
1 stop
LATAM Airlines Logo
7:35 am - 11:59 pm
EZE
-
SEA
20h 24m
2 stops
$927LATAM Airlines
Thu, Oct 8 - Wed, Oct 28
Delta Logo
8:25 am - 9:20 am
SEA
-
EZE
20h 55m
1 stop
Delta Logo
3:55 am - 6:59 pm
EZE
-
SEA
43h 04m
2 stops
$967Delta
Sun, Sep 13 - Tue, Sep 29
Delta Logo
11:35 pm - 9:20 am
SEA
-
EZE
29h 45m
2 stops
Delta Logo
8:10 pm - 2:39 pm
EZE
-
SEA
22h 29m
1 stop
$971Delta
Mon, Jun 8 - Tue, Jun 16
GOL Logo
8:45 pm - 10:20 pm
SEA
-
CGH
21h 35m
2 stops
GOL Logo
6:30 am - 12:08 am
CGH
-
SEA
21h 38m
2 stops
$1,001GOL
Mon, Jun 8 - Mon, Jun 15
GOL Logo
8:45 pm - 6:50 pm
SEA
-
VCP
42h 05m
2 stops
GOL Logo
10:25 am - 12:08 am
VCP
-
SEA
41h 43m
2 stops
$1,036GOL
Booking Insights

KAYAK's insights & trends for Seattle to South America flights

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

What is the cheapest month to fly from Seattle to South America?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to South America, 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 South America is August, when tickets cost $157 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $1,636 and $1,400 respectively.

How far in advance should I book a flight from Seattle to South America?

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 South America, 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 South America, you should book around 5 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$227
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Seattle to Medellín

FAQs - booking South America flights

  • How does KAYAK find such low prices on flights from Seattle to South America?

    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 South America.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to South America 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 South America?

    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 from Seattle to South America with an airline and back with another airline.

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

    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 from Seattle to South America 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 South America

 
Need help choosing which airline to fly with from Seattle to South America? 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 8466 reviews
7.9Comfort
7.8Entertainment
8.5Crew
7.2Food
8.1Boarding
Airline reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

6.0 GoodSilvestre, Apr 2026
MCO - GRU
Read more Delta reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

LATAM is a great airline who takes care of there guests. They consistently walk around and see if you need water in addition to taking care of all the passengers. The chicken in process is really easy and I’m always offered a chance for an upgrade which I appreciate.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Apart of Sky miles delta. And they go everywhere in Brazil

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

We were not allowed to carry a bottle of water onto the 8 hour flight.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

I like this airline a lot no problems at all, except being forced to check a carry-on bag ., Overall very good airline

The assistance we received and the flight itself was wonderful. We will fly with LATAM airlines again, in the future.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Was given all 3 boarding passes. Was refused boarding to Brasilia in Miami even though I had up to date Brazilian Visa and US passport. Had to return to Phoenix as trip was cancelled. Waiting for refund of the fare. Missed my son's birthday and visit with him and his wife.

The pilots landing and taking off was very bad on the first flight, the second one taking off was great but landing was also rough

The check in and on the ground experience is very poor. Their online check and trip management is the worst I have ever seen and they have long lines to check in at the airport, technology is glitchy/unusable and have exorbitant baggage fees. The flight itself is fine, although the food is about what you would expect and their was no functioning entertainment for an international flight.

My experience with this flight was extremely negative and resulted in serious financial and personal consequences. The flight departed with a significant delay, which caused me to miss my international connecting flight. As a direct result of this delay — which was entirely beyond my control — I was unable to reach my final destination on time, causing me to lose a previously scheduled hair transplant surgery that had been arranged months in advance. This was not a minor inconvenience. The surgery involved: • A reserved operating room • Medical and technical staff scheduled specifically for that date • Surgical instruments prepared in advance • Strict scheduling that does not allow for easy rescheduling Due to the airline’s delay and poor handling of the situation: • I lost already paid international flight tickets • I was forced to purchase new tickets, incurring duplicate expenses • I spent over six additional hours in airports, under stressful conditions • I incurred unexpected costs for meals and transportation • I lost a medical opportunity that cannot be easily recovered, along with the emotional distress associated with it Although the airline covered one night of hotel accommodation, this did not address the real impact of the delay, nor the significant damages caused by missing a critical medical procedure. The lack of punctuality, planning, and effective solutions reflects a serious lack of responsibility toward passengers, especially when international connections and time-sensitive medical commitments are involved. I do not recommend this airline for travelers with important schedules, medical appointments, or critical connections. In my case, the delay did not merely cause inconvenience — it resulted in the loss of a surgery and substantial financial damage.

I was not able to get on the flight due to delays out of Philadelphia. I arrived in MIA at 10:30pm and there was no one at the GOL Desk. Is there any flight credit available for this flight?

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.

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Like: flights are on time, good boarding process Can improve: planes are old, improve entertainment and make space more comfortable

Had to wait for a gate for a long time, then waited on the run way for a long time before leaving. The actual flights part was good.

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

On time departure and early arrival. Flight attendant very nice.

Everything you need to know for your flight to South America

Information on your arrival and departure airports