Alaska Airlines offers free Wi-Fi on longer flights, ideal for business travelers needing connectivity.
First-class passengers enjoy hot meals and cocktail service, enhancing comfort on long-haul flights.
Cheap flights from Seattle (SEA) to Ushuaia (USH)
SEA — USH
ago. 19 — ago. 261
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Ushuaia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.The best insider tips for Seattle to Ushuaia flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Ushuaia trip
Airlines
![Alaska Airlines]()
Alaska Airlines
![Hawaiian Airlines]()
Hawaiian Airlines
Hawaiian Airlines provides lie-flat seats in First Class on Boeing 787 and A330 aircraft.
Free meals in Main Cabin on daytime flights enhance comfort for all passengers.
Our travel experts
Best time to book a flight from Seattle to Ushuaia
Have a flexible travel schedule? Discover the best time to fly to Ushuaia from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Ushuaia
What is the cheapest time of day to fly from SEA to USH?
Find hourly flight availability from Seattle to Ushuaia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.
It’s optimal to fly from Seattle to Ushuaia at noon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Seattle to Ushuaia?
Use this chart to determine the cheapest time to fly round-trip from Seattle to Ushuaia. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their Seattle to Ushuaia flight should consider departing on Monday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.