IAD - OSA

$374 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 8/27. 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

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Everything you should know

Cheapest round-trip
$1,019
EVA Air
Mon 10/26Wed 11/11
IAD - KIX • 1 stop
Cheapest one-way
$374
Multiple Airlines
Thu 8/27
IAD - KIX • 3 stops
Top airlines
Cheapest • from $1,019 (round-trip)
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
Cheapest • Avg $796 (round-trip)
Shortest trip • 17h 16m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, Oct 26 - Wed, Nov 11
EVA Air Logo
1:15 am - 11:55 am
IAD
-
KIX
21h 40m
1 stop
EVA Air Logo
10:55 am - 8:55 pm
KIX
-
IAD
24h 00m
1 stop
$1,019EVA 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
$1,019EVA Air
Mon, Sep 7 - Tue, Sep 15
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
$1,019EVA Air
Mon, Oct 26 - Wed, Nov 11
EVA Air Logo
1:15 am - 6:00 pm
IAD
-
UKB
27h 45m
1 stop
EVA Air Logo
11:00 am - 8:55 pm
UKB
-
IAD
23h 55m
1 stop
$1,019EVA 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
$1,021EVA Air
Mon, Sep 7 - Tue, Sep 15
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
$1,026EVA Air
Mon, Sep 7 - Tue, Sep 15
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
$1,038EVA Air
Wed, Oct 28 - Thu, Nov 5
EVA Air Logo
1:15 am - 11:55 am
IAD
-
KIX
21h 40m
1 stop
EVA Air Logo
6:10 pm - 8:55 pm
KIX
-
IAD
40h 45m
1 stop
$1,057EVA Air
Tue, Oct 27 - Wed, Nov 11
ANA Logo
12:15 pm - 8:35 pm
IAD
-
ITM
19h 20m
1 stop
ANA Logo
2:00 pm - 3:40 pm
ITM
-
IAD
15h 40m
1 stop
$1,322ANA
Wed, Aug 26 - Tue, Sep 8
ANA Logo
12:15 pm - 7:10 pm
IAD
-
ITM
17h 55m
1 stop
ANA Logo
8:00 am - 3:35 pm
ITM
-
IAD
20h 35m
1 stop
$1,322ANA
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 August, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $2,816 and $2,550 respectively.

Good to know

Low season

April

Cheapest flight

$374
Best time to beat the crowds with an average 50% drop in price.
Most popular time to fly and prices are also 7% 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 $374 for a one-way ticket and $1,019 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 1288 reviews
8.7Crew
8.2Comfort
8.5Boarding
8.0Entertainment
7.8Food
Airline reviews

It was so disappointed trip by unexpected company's fault delay. It had taken 3 hours delay for mechanical maintenance plus another 3 hours for bad weather.

2.0 Mediocreemiko, Jul 2026
IAD - HND
Read more ANA reviews

It was so disappointed trip by unexpected company's fault delay. It had taken 3 hours delay for mechanical maintenance plus another 3 hours for bad weather.

12 of the 14 hours were in the dark, all during daylight. Didn’t use my light because it disturbed other people it was illuminating. 14 hours sitting upright in a cramped space was horrible.

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

Delays, plane transfer due to malfunction, no entertainment, limited beverage service.

I like the service very much. The food just okay but maybe different culture who like, who don't like.

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.

Seats had more space than expected. No recline, that is good.

We purchased premium economy seats 9 months ago and got bumped to economy when we tried to board the plane. It was a huge fiasco while they struggled to find us seats. I tried reaching out to Kayak to see how we can get refunded for the extra money we spent on premium but have heard nothing back. It was a 14 hour flight and were disappointed that we lost our seats after selecting them 9 months ago.

Excellent. All the ticket prices have gone up so much. With only economy as the option, I thought I better pay for a good airline and I am glad I took ANA. The only thing is the long layover at Hanaeda enroute to Singapore. Any chance to bring back the service to land at Narita instead for the transit and a shorter layover will be fantastic. I am a fan of ANA.

The flight was canceled due to a mechanical problem. The rebooked flights were snot good. Many complexities. Will not use a third party booking again.

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

Information on your arrival and departure airports