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

Popular airlines from Seattle, WA (BFI-Boeing Field) to Posadas (PSS-Libertador General Jose de San Martin)

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Flights from Seattle (BFI) to Posadas (PSS)
Origin airport
Boeing Field
Destination airport
Libertador General Jose de San Martin
Distance
6609 mi

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.

 

Frequently asked questions

How much does a flight from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS) cost?
Grab a cheap one-way flight or cheap return flight from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS)?
Flying in may help you find better deals, as it's the cheapest month for flights between BFI and PSS. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BFI to PSS flight.
How many flights per day from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS)?
Nonstop flights from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BFI to PSS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS)?
To land at Libertador General Jose de San Martin Airport (PSS) without delays, pick a flight that leaves Boeing Field Airport (BFI) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS) last-minute?
Last-minute fares from BFI to PSS are typically more expensive. To lock in the best prices, start searching for flights early. That said, if you can play around with your travel dates, you may score a cheap ticket right before your journey.
Is it cheaper to book a BFI to PSS flight and hotel package?
Compared with arranging hotels and flights separately, booking a BFI 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 travel planning. Simply secure your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Boeing Field Airport (BFI) to Libertador General Jose de San Martin Airport (PSS)?
You can usually cancel or reschedule your BFI to PSS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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