IAD - OSA

$485 Find Cheap Flights from Washington Dulles Airport to Osaka

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 9/8. 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

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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Flights 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

Tue, Sep 9 - Tue, Sep 16
Air China Logo
11:00 pm - 12:40 pmIAD-KIX
24h 40m1 stop
Air China Logo
9:05 am - 7:30 pmKIX-IAD
23h 25m1 stop
$743Air China
Find Deal
Tue, Nov 25 - Tue, Dec 2
Air China Logo
10:00 pm - 12:40 pmIAD-KIX
24h 40m1 stop
Air China Logo
9:00 am - 6:30 pmKIX-IAD
23h 30m1 stop
$765Air China
Find Deal
Tue, Nov 25 - Mon, Dec 1
Air China Logo
10:00 pm - 8:10 pmIAD-KIX
32h 10m1 stop
Air China Logo
5:10 pm - 6:30 pmKIX-IAD
39h 20m1 stop
$771Air China
Find Deal
Wed, Sep 17 - Wed, Sep 24
Air Canada Logo
2:25 pm - 4:25 pmIAD-KIX
37h 00m1 stop
Air Canada Logo
6:05 pm - 11:13 amKIX-IAD
30h 08m2 stops
$953Air Canada
Find Deal
Sun, Sep 14 - Sun, Sep 21
Air Canada Logo
5:37 pm - 4:25 pmIAD-KIX
33h 48m2 stops
Air Canada Logo
6:05 pm - 9:38 amKIX-IAD
28h 33m1 stop
$982Air Canada
Find Deal
Mon, Nov 24 - Thu, Dec 4
Korean Air Logo
11:50 am - 10:00 amIAD-UKB
32h 10m1 stop
Korean Air Logo
6:30 pm - 9:50 amUKB-IAD
29h 20m1 stop
$1,073Korean Air
Find Deal
Sat, Sep 6 - Mon, Dec 22
Korean Air Logo
1:15 pm - 11:20 amIAD-KIX
33h 05m1 stop
Korean Air Logo
9:15 am - 9:50 amKIX-IAD
38h 35m1 stop
$1,104Korean Air
Find Deal
Sun, Aug 24 - Mon, Sep 8
Delta Logo
5:25 pm - 11:20 amIAD-KIX
28h 55m2 stops
Delta Logo
6:10 pm - 11:32 pmKIX-IAD
42h 22m2 stops
$1,135Delta
Find Deal
Tue, Aug 26 - Fri, Sep 5
ANA Logo
12:15 pm - 9:45 pmIAD-UKB
20h 30m1 stop
ANA Logo
7:05 am - 10:05 amUKB-IAD
16h 00m1 stop
$1,170ANA
Find Deal
Tue, Aug 26 - Fri, Sep 5
ANA Logo
12:15 pm - 7:10 pmIAD-ITM
17h 55m1 stop
ANA Logo
7:30 am - 10:05 amITM-IAD
15h 35m1 stop
$1,170ANA
Find Deal
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.

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 $422 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,873 and $1,859 respectively.

Good to know

Low seasonJanuary
Cheapest flight$485
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 70% 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 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Osaka was $485 for a one-way ticket and $743 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, oneworld, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Osaka, with Star Alliance being the most commonly used for this route.

  • 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.
8.4
ANAOverall score based on 922 reviews
8.5Boarding
7.7Food
7.9Entertainment
8.2Comfort
8.7Crew
Airline reviews

The flight crew was outstanding. Very cheerful and always respectful. I wish the same could be said about United. The AC wasn't the best on the plane.

8.0 ExcellentPaul, Jul 2025CGK - NRT
Read more ANA reviews

The flight crew was outstanding. Very cheerful and always respectful. I wish the same could be said about United. The AC wasn't the best on the plane.

The seats are uncomfortable. The flight attendants are not pleasant. They do their job, but not with a ray of sunshine and warmth. The food was awful, not what I would expect from an Asian airline. All of the other Asian airlines I have flown have far better food. The food was on par with United airlines food, which is really bad. Maybe ANA should get out of the alliance with United.

During booking, I selected the seats so that my wife and I would sit next to each other. However, the airline changed our seats at boarding so that we were seated apart. Very disappointing.

Every leg of the flight was late causing us to miss our flight to Okinawa and have to take the next flight out.

One of the best 14 hour flights I've ever had. Crew was friendly throughout which can be difficult on longer flights. The crew being kind and respectful is very important for me. Plane felt clean and I was able to get some well needed uninterrupted sleep. I put them slightly above Cathay Pacific as far as cleanliness the only down side was a lack of entertainment selections, but hey I am an American taking a trip on a Japanese airline so I cannot complain. Thank you ANA and the Tokyo airport all very friendly. Will see you soon

ANA gave me an amazing experience. They are very good with customer service.

Everything was good may improve some alcohol drinks and amenities during fly

Due to turbulence there was no inflight service, which is very understandable, The flight is very short, and safety is more important. There was a bit of a delay with take off, but was to be expected with the rain.

The crew was amazing, really friendly and efficient. One of the best flights I have ever been on. They made the long flight comfortable and I noticed there were two birthdays on the flight. They gave to customers birthday cards and wished them a happy birthday. That was very nice to see.

Everything was great. Wifi was down,but that didn't matter to me.

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

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