$548 Cheap flights from Osaka to Seattle (ITM to SEA)

Popular airlines from Itami Airport (ITM) to Seattle

Japan Airlines
Japan Airlines
American Airlines
American Airlines
All Nippon Airways
All Nippon Airways
Air Canada
Air Canada
United
United
Alaska Airlines
Alaska Airlines
Hawaiian Airlines
Hawaiian Airlines

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Cheap Flights from Osaka to Seattle (ITM-SEA)

Prices were available within the past 7 days and start at $548 for one-way flights and $716 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

Fri, Jan 16 - Sun, Feb 1

ITM

Osaka

SEA

Seattle

$716

Roundtrip

found 1 day ago

Fri, Feb 13 - Sun, Mar 1

ITM

Osaka

SEA

Seattle

$722

Roundtrip

found 1 day ago

Wed, Jul 8 - Tue, Jul 21

ITM

Osaka

SEA

Seattle

$729

Roundtrip

found 2 hours ago

Fri, Feb 13 - Sat, Feb 28

ITM

Osaka

SEA

Seattle

$785

Roundtrip

found 1 day ago

Sat, Feb 14 - Sun, Mar 1

ITM

Osaka

SEA

Seattle

$791

Roundtrip

found 1 day ago

Mon, Feb 16 - Sun, Mar 1

ITM

Osaka

SEA

Seattle

$793

Roundtrip

found 1 day ago

Fri, Feb 6 - Mon, Feb 16

ITM

Osaka

SEA

Seattle

$809

Roundtrip

found 5 hours ago

Tue, Apr 21 - Sun, Apr 26

ITM

Osaka

SEA

Seattle

$819

Roundtrip

found 1 day ago

Tue, Feb 3 - Mon, Feb 16

ITM

Osaka

SEA

Seattle

$838

Roundtrip

found 1 day ago

Wed, Apr 22 - Mon, Apr 27

ITM

Osaka

SEA

Seattle

$861

Roundtrip

found 1 day ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

SEA

Seattle - Tacoma Intl.

Cheapest

20 min

Flights from $1,239

Flights from Osaka (ITM) to Seattle (SEA)
Origin airport	Itami
Destination airport	Seattle - Tacoma Intl.
Airlines serving	Air Canada, All Nippon Airways, American Airlines, Japan Airlines, United
Roundtrip price	$715
Distance	5002 mi

Osaka to Seattle Flights

The cheapest times to fly from Osaka to Seattle

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 Osaka to Seattle are during the month of January. You can find some of the cheapest flights from Osaka to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Osaka to Seattle

Sunday is one of the best days to book for cheap flights from Osaka to Seattle: 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 Osaka to Seattle

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 Osaka to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $548 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 Osaka to Seattle 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 Osaka to Seattle 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 Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA) cost?

Secure a cheap one-way flight from $548 or cheap return flight from $716 from Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA) 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 Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA)?

The cheapest month to fly from ITM to SEA is January, when demand is low. Off-peak months are often when you'll find cheap fares for travel between these airports.

What is the cheapest airline that flies from Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA)?

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 see which carrier offers the cheapest ITM to SEA flight.

How many flights per day from Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA)?

You'll have to take a flight with a layover when traveling from Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.

What day of the week has the most flights from ITM to SEA?

You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.

What is the best time to fly from Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA)?

To reach Seattle - Tacoma Intl. Airport (SEA) without delays, opt for a flight that takes off from Itami Airport (ITM) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA) last-minute?

Last-minute bookings from ITM to SEA are usually more expensive. To secure the best rates, start looking for flights well ahead of time. That being said, if you're flexible with your travel plans, it's possible to find a cheap fare just before your departure.

Is it cheaper to book an ITM to SEA flight and hotel package?

Compared with arranging hotels and flights separately, booking an ITM to SEA flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of hotels, then personalize your trip with extras like activities and car rentals.

Can I cancel or change the date of my flight from Itami Airport (ITM) to Seattle - Tacoma Intl. Airport (SEA)?

If you reserved your ITM to SEA flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.