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Cheap flights from Seattle to Sendai from $674

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sendai departing on 1/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Asiana Airlines Logo
12:10 am - 11:45 amSEA-SDJ
18h 35m1 stop
Asiana Airlines Logo
12:45 pm - 1:55 pmSDJ-SEA
18h 10m1 stop
$674Asiana Airlines
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Sun, Jan 18 - Wed, Jan 21
ANA Logo
3:45 pm - 10:40 amSEA-SDJ
25h 55m2 stops
ANA Logo
2:35 pm - 1:20 pmSDJ-SEA
15h 45m2 stops
$758ANA
Find Deal
Mon, Jan 19 - Wed, Jan 21
Asiana Airlines Logo
12:10 am - 11:45 amSEA-SDJ
18h 35m1 stop
Asiana Airlines Logo
12:45 pm - 3:44 pmSDJ-SEA
19h 59m2 stops
$2,147Asiana Airlines
Find Deal
Sun, Jan 18 - Wed, Jan 21

Asiana Airlines flights from Seattle to Sendai

Our best Asiana Airlines deals on Seattle to Sendai flight tickets
Asiana Airlines
Jan 18
SEA12:10 amSeattle/Tacoma Intl
18h 35m
1 stop
SDJ11:45 amSendai
Jan 21
SDJ12:45 pmSendai
18h 10m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
$674
Find similar
Asiana Airlines
Jan 18
SEA12:10 amSeattle/Tacoma Intl
18h 35m
1 stop
SDJ11:45 amSendai
Jan 21
SDJ12:45 pmSendai
19h 59m
2 stops
SEA3:44 pmSeattle/Tacoma Intl
$2,147
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Sendai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 18, 2025.
Use the filters below to find and compare flights from Seattle to Sendai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSendai

SEA - SDJ

SEASDJ

Seattle/Tacoma Intl

Sun 1/18

12:10 am-11:45 am

1 stop18h 35m

Sendai

Wed 1/21

12:45 pm-1:55 pm

1 stop18h 10m

$674

SeattleSendai

SEA - SDJ

SEASDJ

Seattle/Tacoma Intl

Mon 1/19

3:45 pm-10:40 am

2 stops25h 55m

Sendai

Wed 1/21

2:35 pm-1:20 pm

2 stops15h 45m

$758

SeattleSendai

SEA - SDJ

SEASDJ

Seattle/Tacoma Intl

Sun 1/18

12:10 am-11:45 am

1 stop18h 35m

Sendai

Wed 1/21

12:45 pm-3:44 pm

2 stops19h 59m

$2,147

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Seattle to Sendai

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Sendai according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Sendai (SEA to SDJ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Sendai

Direct flights

None
There are no direct flights from Seattle to Sendai. There are no popular flight routes from Seattle to Sendai.
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  • How far is Seattle/Tacoma Intl to Sendai by plane?

    The straight-line distance from Seattle/Tacoma Intl to Sendai is 4608.4 mi. Typically, this will take 18h 35m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Sendai Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Sendai Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Sendai Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sendai Airport.

  • What documentation or ID do you need to fly to Sendai Airport?

    The travel and health documents you'll need for your trip to Sendai Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sendai Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Seattle to Sendai?

    Confirm your travel details to search for the latest offers for flights from Seattle to Sendai. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seattle to Sendai with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Sendai?

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Matsushima

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Sendai?

Finding the right flight to Sendai from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sendai quick and easy, saving you time and money.

Can I find flights from Seattle to Sendai with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sendai from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Sendai?

momondo provides multiple filters to help you find the best flight to Sendai from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Sendai right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Sendai, momondo offers a useful price alert feature which will track prices for flights to Sendai from Seattle and alert you when they change.

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Cabin classes currently available on flights to Sendai

List of cabin classes available on flights landing in Sendai. Availability may vary depending on flight origin and airline.
First Class to Sendai
Business Class to Sendai