Cheap Flights from Seattle (SEA) to Posadas (PSS)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Posadas (PSS-Libertador General Jose de San Martin)

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Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS) cost?
Snag a cheap one-way flight or cheap return flight from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS)?
The cheapest month to fly from SEA to PSS is , when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS)?
To find the cheapest airline flying from SEA to PSS, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS)?
You'll need to take a flight with a layover if you're traveling from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SEA to PSS?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS)?
Select a flight from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS) last-minute?
Last-minute bookings from SEA to PSS are usually more expensive. For the lowest rates, start searching for flights early. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare just before your departure.
Is it cheaper to book a SEA to PSS flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to PSS flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Simply pick your flights and select from our wide range of stays, then customize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Libertador General Jose de San Martin Airport (PSS)?
Typically, it's possible to reschedule or cancel your SEA to PSS flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Libertador General Jose de San Martin
Distance
6606 mi

Book with confidence

Book with confidence

Seattle to Posadas Flights

The cheapest times to fly from Seattle to Posadas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Posadas are during the month of . You can find some of the cheapest flights from Seattle to Posadas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Posadas

Sunday is one of the best days to book for cheap flights from Seattle to Posadas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Posadas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Posadas in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Posadas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Posadas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Posadas Flights

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