Cheap Flight Deals From Seattle (SEA) to Osaka (OSA) Starting at $639

If you’re puzzled about quarantine requirements and travel restrictions when catching a flight from Seattle to Osaka, go right to our Covid-19 Travel Advisor.

Choose a good seat, because you’ll be planted on it for at least 11 hours and 50 minutes. This is the shortest possible flight time from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kansai Intl. Airport

We get that traveling right now has its challenges, so it’s good to know that many reservations booked through us are able to be cancelled or changed. If your travel plans to Osaka have been affected by COVID-19, a lot of airlines are making things easier by offering credits to use at a later date. Just sign in to your account and you’ll quickly see what options are available. Our Customer Service Portal is the place to go for more information.

In most cases you’ll have the option to reschedule your flight to Osaka without a change fee. All you have to do then is pay the difference between the old flight and the new one. Look for the “no change fees” filter and book with confidence.

Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.

We won’t keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.