$720 Cheap Flights from Sendai (SDJ) to Washington (IAD)

View $720 flight on Mon, Jun 1, 2026Opens in a new window

Popular airlines from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Sendai to Washington (SDJ-IAD)

Prices were available within the past 7 days and start at $720 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight from $720 or cheap return flight from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD)?
Planning your getaway for is a good way to save, as it's the cheapest month for flights between SDJ and IAD. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SDJ to IAD flight.
How many flights per day from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD)?
Direct flights from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SDJ to IAD?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be 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 Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD)?
To arrive at Washington Dulles Intl. Airport (IAD) on time, choose a flight that leaves Sendai Airport (SDJ) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from SDJ to IAD are usually more expensive. To lock in the lowest rates, start searching for flights as soon as possible. That being said, if your travel plans are flexible, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a SDJ to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a SDJ to IAD flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place takes the hassle out of planning your trip. Simply secure your flights and select from our extensive range of stays, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sendai Airport (SDJ) to Washington Dulles Intl. Airport (IAD)?
In most instances, you can reschedule or cancel your SDJ to IAD flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
Sendai
Destination airport
Washington Dulles Intl.
Distance
6579 mi

Book with confidence

Sendai to Washington Flights

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

 

The best time to book a flight from Sendai to Washington

Sunday is one of the best days to book for cheap flights from Sendai 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 Sendai 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 Sendai to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $720 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 Sendai 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 Sendai 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.

 

Sendai to Washington Flights

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