$351 Cheap Flights from Seattle (SEA) to Nagasaki (NGS)

View $351 flight on Mon, Sep 1, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Nagasaki Airport (NGS)

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Cheap Flights from Seattle to Nagasaki (SEA-NGS)

Prices were available within the past 7 days and start at $351 for one-way flights and $647 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Sep 3 - Wed, Sep 24
SEA
Seattle
NGS
Nagasaki
$647 Roundtrip, found 3 hours ago
$647
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Sep 3 from Seattle to Nagasaki, returning Wed, Sep 24, priced at $647 found 3 hours ago
All Nippon Airways
Wed, Sep 3 - Thu, Sep 25
SEA
Seattle
NGS
Nagasaki
$653 Roundtrip, found 3 hours ago
$653
Roundtrip
found 3 hours ago
Select All Nippon Airways flight, departing Wed, Sep 3 from Seattle to Nagasaki, returning Thu, Sep 25, priced at $653 found 3 hours ago
Korean Air
Tue, Sep 2 - Thu, Sep 18
SEA
Seattle
NGS
Nagasaki
$661 Roundtrip, found 3 hours ago
$661
Roundtrip
found 3 hours ago
Select Korean Air flight, departing Tue, Sep 2 from Seattle to Nagasaki, returning Thu, Sep 18, priced at $661 found 3 hours ago
United
Fri, Sep 5 - Wed, Sep 24
SEA
Seattle
NGS
Nagasaki
$663 Roundtrip, found 3 hours ago
$663
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Sep 5 from Seattle to Nagasaki, returning Wed, Sep 24, priced at $663 found 3 hours ago
All Nippon Airways
Fri, Sep 5 - Thu, Sep 25
SEA
Seattle
NGS
Nagasaki
$669 Roundtrip, found 3 hours ago
$669
Roundtrip
found 3 hours ago
Select All Nippon Airways flight, departing Fri, Sep 5 from Seattle to Nagasaki, returning Thu, Sep 25, priced at $669 found 3 hours ago
Japan Airlines
Sun, Aug 31 - Tue, Sep 16
SEA
Seattle
NGS
Nagasaki
$676 Roundtrip, found 3 hours ago
$676
Roundtrip
found 3 hours ago
Select Japan Airlines flight, departing Sun, Aug 31 from Seattle to Nagasaki, returning Tue, Sep 16, priced at $676 found 3 hours ago
Japan Airlines
Sun, Aug 31 - Wed, Sep 17
SEA
Seattle
NGS
Nagasaki
$680 Roundtrip, found 3 hours ago
$680
Roundtrip
found 3 hours ago
Select Japan Airlines flight, departing Sun, Aug 31 from Seattle to Nagasaki, returning Wed, Sep 17, priced at $680 found 3 hours ago
All Nippon Airways
Fri, Sep 5 - Sun, Sep 21
SEA
Seattle
NGS
Nagasaki
$684 Roundtrip, found 3 hours ago
$684
Roundtrip
found 3 hours ago
Select All Nippon Airways flight, departing Fri, Sep 5 from Seattle to Nagasaki, returning Sun, Sep 21, priced at $684 found 3 hours ago
Japan Airlines
Sun, Aug 31 - Fri, Sep 19
SEA
Seattle
NGS
Nagasaki
$685 Roundtrip, found 3 hours ago
$685
Roundtrip
found 3 hours ago
Select Japan Airlines flight, departing Sun, Aug 31 from Seattle to Nagasaki, returning Fri, Sep 19, priced at $685 found 3 hours ago
Alaska Airlines
Thu, Aug 28 - Thu, Sep 4
SEA
Seattle
NGS
Nagasaki
$722 Roundtrip, found 5 days ago
$722
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Aug 28 from Seattle to Nagasaki, returning Thu, Sep 4, priced at $722 found 5 days ago

Alternative airports near Nagasaki

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

Select flight to Nagasaki Airport NGS. Cheapest and Closest option available. Average driving time to city center is 28 minutes. Flights from $711
NGS
Nagasaki Airport
CheapestClosest
Average driving time to city center28 min
Flights from $711
Flights from Seattle (SEA) to Nagasaki (NGS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Nagasaki
Airlines serving
All Nippon Airways, American Airlines, Hawaiian Airlines, Japan Airlines, Korean Air
Roundtrip price
$646
Distance
5311 mi

Seattle to Nagasaki Flights

The cheapest times to fly from Seattle to Nagasaki

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

 

The best time to book a flight from Seattle to Nagasaki

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

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 Nagasaki in 2025. You can also book with separate airlines for your outbound and return journeys, from $351 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 Nagasaki 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 Nagasaki 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 Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS) cost?
Grab a cheap one-way flight from $351 or cheap return flight from $647 from Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS) 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 Nagasaki Airport (NGS)?
September is the least expensive month to fly from SEA to NGS. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS)?
To find the cheapest airline that'll fly you from SEA to NGS, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to NGS?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a number of factors, such as the airline and season.*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 Nagasaki Airport (NGS)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS) route, travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Nagasaki Airport (NGS) last-minute?
Waiting until just before your trip to book your flight from SEA to NGS generally means paying more. While you may come across some last-minute discounts, there's no guarantee. Allow some flexibility in your schedule for a better chance of snagging a bargain.
Is it cheaper to book a SEA to NGS flight and hotel package?
Opting for a SEA to NGS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our impressive range of stays and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Nagasaki Airport (NGS)?
It's generally possible to reschedule or cancel your SEA to NGS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.