IAD - OSA

$503 Find Cheap Flights from Washington Dulles Airport to Osaka - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Osaka departing on 8/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Osaka

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Osaka, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Osaka, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,136
EVA Air
Mon 8/31Sun 9/13
IAD - UKB • 1 stop
Cheapest one-way
$503
Multiple Airlines
Sat 8/15
IAD - KIX • 3 stops
Top airlines
EVA Air
Cheapest • from $1,136 (round-trip)
ANA
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Osaka. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Beijing (PEK)
Cheapest • Avg $796 (round-trip)
Seattle (SEA)
Shortest trip • 10h 53m (one-way)
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 77% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Osaka!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Osaka (IAD-OSA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Osaka that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Osaka

Mon, Aug 31 - Sun, Sep 13
EVA Air Logo
1:50 am - 6:00 pm
IAD
-
UKB
27h 10m
1 stop
EVA Air Logo
7:00 pm - 10:00 pm
UKB
-
IAD
40h 00m
1 stop
$1,136EVA Air
Mon, Sep 28 - Sun, Oct 4
EVA Air Logo
1:15 am - 12:10 pm
IAD
-
KIX
21h 55m
1 stop
EVA Air Logo
6:30 pm - 10:00 pm
KIX
-
IAD
40h 30m
1 stop
$1,141EVA Air
Mon, Sep 28 - Sun, Oct 4
EVA Air Logo
1:15 am - 12:10 pm
IAD
-
KIX
21h 55m
1 stop
EVA Air Logo
6:30 pm - 10:00 pm
KIX
-
IAD
40h 30m
1 stop
$1,156EVA Air
Fri, Sep 18 - Sun, Oct 4
EVA Air Logo
1:15 am - 12:10 pm
IAD
-
KIX
21h 55m
1 stop
EVA Air Logo
6:30 pm - 10:00 pm
KIX
-
IAD
40h 30m
1 stop
$1,182EVA Air
Tue, Oct 6 - Thu, Oct 15
STARLUX Airlines Logo
5:33 pm - 12:15 pm
IAD
-
KIX
29h 42m
2 stops
STARLUX Airlines Logo
3:10 pm - 5:40 am
KIX
-
IAD
27h 30m
2 stops
$1,219STARLUX Airlines
Sat, Sep 19 - Sun, Oct 4
STARLUX Airlines Logo
5:46 pm - 2:00 pm
IAD
-
KIX
31h 14m
2 stops
STARLUX Airlines Logo
1:25 pm - 5:40 am
KIX
-
IAD
29h 15m
2 stops
$1,228STARLUX Airlines
Wed, Oct 21 - Mon, Nov 16
Korean Air Logo
1:15 pm - 10:55 am
IAD
-
UKB
32h 40m
1 stop
Korean Air Logo
6:40 pm - 9:50 am
UKB
-
IAD
29h 10m
1 stop
$1,235Korean Air
Mon, Sep 28 - Thu, Oct 8
Multiple Airlines Logo
1:15 am - 6:00 pm
IAD
-
UKB
27h 45m
1 stop
Multiple Airlines Logo
7:00 pm - 5:40 am
UKB
-
IAD
23h 40m
2 stops
$1,241Multiple Airlines
Sun, Nov 15 - Tue, Nov 24
ANA Logo
8:35 am - 6:55 pm
IAD
-
ITM
20h 20m
2 stops
ANA Logo
8:00 am - 9:10 am
ITM
-
IAD
15h 10m
1 stop
$1,352ANA
Tue, Sep 22 - Thu, Oct 8
ANA Logo
12:15 pm - 6:10 pm
IAD
-
ITM
16h 55m
1 stop
ANA Logo
9:00 am - 3:35 pm
ITM
-
IAD
19h 35m
1 stop
$1,353ANA
Booking Insights

KAYAK's insights & trends for Dulles Intl to Osaka flights

Get data-powered insights and trends into flights from Dulles Intl to Osaka to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Osaka?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Osaka departing in August.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Osaka?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Osaka, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Osaka is July, where tickets cost $247 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $2,816 and $1,280 respectively.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$503
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 76% lower on average.
Flight from Washington Dulles Airport to Osaka Kansai Intl

When to book flights from Dulles Intl to Osaka

Are your dates flexible? Find out the best times to travel from Dulles Intl to Osaka based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Osaka flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Osaka?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Osaka was $503 for a one-way ticket and $1,136 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Osaka?

    A passport is required to fly from Washington Dulles Airport to Osaka.

  • Which airports will I be using when flying from Washington Dulles Airport to Osaka?

    Washington Dulles Airport is served by only 1 airport and there are 2 airports in Osaka. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and you will be arriving in Osaka at one of these airports: Osaka Itami or Osaka Kansai Intl.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Osaka?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Osaka?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Osaka.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Osaka?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Osaka.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Osaka?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Osaka?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Osaka with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Osaka?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Osaka from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Osaka

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Osaka. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Osaka? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
ANAOverall score based on 1236 reviews
8.2Comfort
7.7Food
8.5Boarding
7.9Entertainment
8.7Crew
Airline reviews

On time. Convenience of a small airport. Excellent service from staff at check-in.

6.0 GoodDare, Jun 2026
IWK - HND
Read more ANA reviews

On time. Convenience of a small airport. Excellent service from staff at check-in.

LAX to San Francisco under UA was sooooo stressful! Flights was delayed and no assistance from the airline to the next flight. Flew UA twice and both flights highly distressful.

The food was terrible and totally inedible. If you are flying with ANA/United bring your own food it was a long flight to be hingry

I thought I bought the ticket directly through Kayak not a 3rd party

I like that we made it faster than regularly scheduled. Everything else was poor. The boarding was slow and chaotic. One person was screaming instructions to people that didn’t understand and there was only one camera so boarding was slow. The crew was not very friendly and one stewardess was extremely rude to everyone the entire flight. The food was not good and not themed to the country we were going to like every international flight I’ve taken. Lastly the seats were awful. After this flight I would never recommend United and will actively avoid booking another flight through them.

When I checked in, it printed two bag tags. The helper said they would cancel the other. They canceled both and my bag was left behind

It was really fast to Tokyo. Much faster than the budget carriers. However a lot less space than international flights.

The ladies are great seats should be a little bigger!

Couple of hours delayed, we had to re-booked our Shinkansen reservation twice. United Aiines need to improve their time!

The check-in started 3 minutes early; there were people lining up a half hour before. I was third, and I got checked in and passes in hand for my connection as well; I walked away from the desk one minute before it was even supposed to be open. Amazing. That said, the food on the first leg of my trip was not good, and I didn’t finish it. Second leg, it was tasty. You get a cup of Häagen-Dazs after dinner. The staff were polite and helpful. Will use again.

Everything you need to know for your flight from Dulles Intl to Osaka

Information on your arrival and departure airports

Washington Dulles Airport (IAD)