$1,008 Cheap Flights from Nagasaki (NGS) to Washington (IAD)

View $1,008 flight on Sun, Sep 21, 2025Opens in a new window

Popular airlines from Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Nagasaki to Washington (NGS-IAD)

Prices were available within the past 7 days and start at $1,008 for one-way flights and $1,177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Jetstar Japan
Mon, Aug 25 - Sun, Sep 7
NGS
Nagasaki
IAD
Washington
$1,177 Roundtrip, found 22 hours ago
$1,177
Roundtrip
found 22 hours ago
Select Jetstar Japan flight, departing Mon, Aug 25 from Nagasaki to Washington, returning Sun, Sep 7, priced at $1,177 found 22 hours ago
Jetstar Japan
Mon, Aug 25 - Fri, Sep 5
NGS
Nagasaki
IAD
Washington
$1,246 Roundtrip, found 22 hours ago
$1,246
Roundtrip
found 22 hours ago
Select Jetstar Japan flight, departing Mon, Aug 25 from Nagasaki to Washington, returning Fri, Sep 5, priced at $1,246 found 22 hours ago
Jetstar Japan
Mon, Aug 25 - Sun, Sep 14
NGS
Nagasaki
IAD
Washington
$1,263 Roundtrip, found 22 hours ago
$1,263
Roundtrip
found 22 hours ago
Select Jetstar Japan flight, departing Mon, Aug 25 from Nagasaki to Washington, returning Sun, Sep 14, priced at $1,263 found 22 hours ago
Jetstar Japan
Mon, Aug 25 - Thu, Aug 28
NGS
Nagasaki
IAD
Washington
$1,303 Roundtrip, found 22 hours ago
$1,303
Roundtrip
found 22 hours ago
Select Jetstar Japan flight, departing Mon, Aug 25 from Nagasaki to Washington, returning Thu, Aug 28, priced at $1,303 found 22 hours ago
Jetstar Japan
Mon, Sep 8 - Thu, Sep 11
NGS
Nagasaki
IAD
Washington
$1,305 Roundtrip, found 4 days ago
$1,305
Roundtrip
found 4 days ago
Select Jetstar Japan flight, departing Mon, Sep 8 from Nagasaki to Washington, returning Thu, Sep 11, priced at $1,305 found 4 days ago
Jetstar Japan
Mon, Aug 25 - Sun, Sep 7
NGS
Nagasaki
IAD
Washington
$1,311 Roundtrip, found 4 days ago
$1,311
Roundtrip
found 4 days ago
Select Jetstar Japan flight, departing Mon, Aug 25 from Nagasaki to Washington, returning Sun, Sep 7, priced at $1,311 found 4 days ago
All Nippon Airways
Wed, Sep 10 - Sun, Sep 14
NGS
Nagasaki
IAD
Washington
$1,349 Roundtrip, found 4 days ago
$1,349
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Wed, Sep 10 from Nagasaki to Washington, returning Sun, Sep 14, priced at $1,349 found 4 days ago
American Airlines
Wed, Sep 10 - Sun, Sep 14
NGS
Nagasaki
IAD
Washington
$1,604 Roundtrip, found 4 days ago
$1,604
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Sep 10 from Nagasaki to Washington, returning Sun, Sep 14, priced at $1,604 found 4 days ago
Korean Air
Mon, Sep 1 - Sat, Sep 13
NGS
Nagasaki
IAD
Washington
$1,650 Roundtrip, found 4 days ago
$1,650
Roundtrip
found 4 days ago
Select Korean Air flight, departing Mon, Sep 1 from Nagasaki to Washington, returning Sat, Sep 13, priced at $1,650 found 4 days ago
Delta
Sat, Aug 2 - Sat, Aug 16
NGS
Nagasaki
IAD
Washington
$2,680 Roundtrip, found 4 days ago
$2,680
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug 2 from Nagasaki to Washington, returning Sat, Aug 16, priced at $2,680 found 4 days ago
Flights from Nagasaki (NGS) to Washington (IAD)
Origin airport
Nagasaki
Destination airport
Washington Dulles Intl.
Airlines serving
All Nippon Airways, American Airlines, Delta, Korean Air
Roundtrip price
$1,177
Distance
7169 mi

Nagasaki to Washington Flights

The cheapest times to fly from Nagasaki to Washington

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

 

The best time to book a flight from Nagasaki to Washington

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

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 Nagasaki to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,008 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 Nagasaki to Washington 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 Nagasaki to Washington 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 Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD) cost?
Discover the latest flight deals from NGS to IAD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from NGS to IAD?
The cheapest flights from NGS to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from NGS to IAD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from NGS to IAD. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD)?
You'll have to book a flight with a layover when traveling from Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from NGS to IAD?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD)?
To avoid possible delays on the Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of being canceled.**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 Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from NGS to IAD are typically more expensive. To lock in the lowest rates, start searching for flights early. That being said, if you're flexible with your travel dates, you may score a cheap fare right before your journey.
Is it cheaper to book a NGS to IAD flight and hotel package?
You'll typically save money by booking a NGS to IAD flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your preferred flights and accommodations, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Nagasaki Airport (NGS) to Washington Dulles Intl. Airport (IAD)?
If you reserved your NGS to IAD flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.