$622 Cheap Flights from Washington (DCA) to Sendai (SDJ)

View $622 flight on Sat, Jan 17, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ)

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Cheap Flights from Washington to Sendai (DCA-SDJ)

Prices were available within the past 7 days and start at $622 for one-way flights and $1,266 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,266 Roundtrip, found 3 days ago
$1,266
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,266 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,279 Roundtrip, found 3 days ago
$1,279
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,279 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,287 Roundtrip, found 3 days ago
$1,287
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,287 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,299 Roundtrip, found 3 days ago
$1,299
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,299 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,416 Roundtrip, found 3 days ago
$1,416
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,416 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,422 Roundtrip, found 3 days ago
$1,422
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,422 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,432 Roundtrip, found 3 days ago
$1,432
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,432 found 3 days ago
Korean Air
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,432 Roundtrip, found 3 days ago
$1,432
Roundtrip
found 3 days ago
Select Korean Air flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,432 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,437 Roundtrip, found 3 days ago
$1,437
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,437 found 3 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
DCA
Washington
SDJ
Sendai
$1,442 Roundtrip, found 3 days ago
$1,442
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Washington to Sendai, returning Sat, Feb 7, priced at $1,442 found 3 days ago

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ) cost?
Secure a cheap one-way flight from $622 or cheap return flight from $1,266 from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ) 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 Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ)?
The cheapest month to fly from DCA to SDJ is January, when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ)?
To find the cheapest airline that'll fly you from DCA to SDJ, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ)?
You'll need to take a flight with a layover when traveling from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from DCA to SDJ?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a number 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 Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ)?
Select a flight from Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be 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 Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ) last-minute?
Last-minute fares from DCA to SDJ are generally more expensive. For the cheapest rates, start searching for flights well in advance. That said, if you can play around with your travel dates, it's possible to find a cheap fare right before your trip.
Is it cheaper to book a DCA to SDJ flight and hotel package?
Securing a DCA to SDJ flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our extensive range of accommodations and then add activities, flights and car rentals 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 Ronald Reagan Washington National Airport (DCA) to Sendai Airport (SDJ)?
In most instances, you can cancel or modify your DCA to SDJ flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like further details, visit our Customer Service portal.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Sendai
Roundtrip price
$1,266
Distance
6596 mi

Book with confidence

Washington to Sendai Flights

The cheapest times to fly from Washington to Sendai

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

 

The best time to book a flight from Washington to Sendai

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

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 Washington to Sendai in 2026. You can also book with separate airlines for your outbound and return journeys, from $622 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 Washington to Sendai 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 Washington to Sendai 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.

 

Washington to Sendai Flights

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*Available to One Key members.