Cheap flights from Seattle to South America from $150
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to South America departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Seattle to South America
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 month to fly to South America?
In general, October is the cheapest month to fly from Seattle to South America. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $927. If you aren’t able to travel during the month of October, then book flights to South America from Seattle during September instead. Flights to South America in September, while not as cheap as those in October, still average around $933.
What is the cheapest day to depart on your flight to South America?
The cheapest day to depart from Seattle to South America is on a Tuesday when prices can be found for as low as $877. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to South America for around $977.
What is the cheapest time of day to depart on your flight to South America?
Our data shows that the cheapest Seattle to South America flights are usually those with departure times in the afternoon. Our users have found flights to South America in the afternoon for as low as $883. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,010 on average. Flights to South America from Seattle at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to South America?
You are more likely to see cheaper flights to South America from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to South America for around $1,033 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South America from Seattle for as low as $908 on momondo.
What is the cheapest airline that flies from Seattle/Tacoma Intl to South America?
Spirit Airlines, LATAM Airlines, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to South America
What airlines fly to South America?
LATAM Airlines, American Airlines and Delta are the top three most popular airlines that fly to South America from Seattle according to our data. LATAM Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to South America. Keep in mind that there are 9 different airlines that fly to South America on a routine basis, so you have a few additional options to choose from.
Cheap Seattle to South America flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to South America
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to South America?
Prices for flights from Seattle/Tacoma Intl Airport to South America refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to South America?
The number of operators available for flights from Seattle/Tacoma Intl Airport to South America is 9 as of June 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to South America?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to South America.
What documentation or ID do you need to fly to South America?
The travel and health documents you'll need for your trip to South America 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 South America. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Seattle to South America
Compare and see reviews for airlines that fly from Seattle to South America with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $382 | Free Cancellation | Rating 6.3 8,083 reviews | |||
| PriceFrom $446 | Free Cancellation | Rating 7.5 1,717 reviews | |||
| PriceFrom $449 | Free Cancellation | Rating 8.0 7,966 reviews | |||
| PriceFrom $449 | Free Cancellation | Rating 7.5 1,797 reviews | |||
| PriceFrom $463 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $469 | Free Cancellation | Rating 7.4 8,840 reviews | |||
| PriceFrom $545 | Free Cancellation | Rating 7.5 1,460 reviews | |||
| PriceFrom $599 | Free Cancellation | Rating 7.3 1,078 reviews | |||
| PriceFrom $745 | Free Cancellation | Rating 7.1 9,629 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to South America?
Finding the right flight to South America from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to South America quick and easy, saving you time and money.
Can I find flights from Seattle to South America with flexible booking policies on momondo?
Yes. All flights to South America from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to South America?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to South America from Seattle.
I’m not ready to book a flight from Seattle to South America right now. Can momondo alert me if prices change?
Price alerts on flights to South America from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.