WAS - OSA

$444 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Osaka departing on 4/7. 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
$951
Asiana Airlines, ANA
Thu 4/23Thu 4/30
IAD - KIX • 2 stops
Cheapest one-way
$444
Multiple Airlines
Tue 4/7
DCA - KIX • 3 stops
Top airlines
ANA
Cheapest • from $983 (round-trip)
ANA
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Osaka. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Beijing (PEK)
Cheapest • Avg $683 (round-trip)
Seattle (SEA)
Shortest trip • 10h 53m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 20% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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 Washington, D.C. to Osaka (WAS-OSA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Osaka

Thu, Apr 23 - Thu, Apr 30
Multiple Airlines Logo
5:35 pm - 4:25 pm
IAD
-
KIX
33h 50m
2 stops
Multiple Airlines Logo
6:00 pm - 11:14 am
KIX
-
IAD
30h 14m
2 stops
$951Multiple Airlines
Mon, Apr 6 - Wed, Apr 22
Multiple Airlines Logo
6:00 am - 9:00 pm
DCA
-
KIX
26h 00m
2 stops
Multiple Airlines Logo
7:35 am - 10:43 pm
KIX
-
DCA
28h 08m
2 stops
$961Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
ANA Logo
12:55 pm - 4:25 pm
DCA
-
KIX
38h 30m
2 stops
ANA Logo
6:00 pm - 12:01 pm
KIX
-
DCA
31h 01m
2 stops
$983ANA
Mon, Apr 20 - Mon, Apr 27
Air Canada Logo
6:59 am - 4:25 pm
DCA
-
KIX
20h 26m
2 stops
Air Canada Logo
6:00 pm - 10:19 am
KIX
-
DCA
29h 19m
2 stops
$1,001Air Canada
Mon, Jun 8 - Wed, Jun 17
Air Canada Logo
8:40 pm - 4:25 pm
DCA
-
KIX
30h 45m
1 stop
Air Canada Logo
6:00 pm - 10:28 pm
KIX
-
DCA
17h 28m
1 stop
$1,005Air Canada
Mon, Apr 13 - Wed, Apr 29
ANA Logo
12:15 pm - 6:10 pm
IAD
-
ITM
16h 55m
1 stop
ANA Logo
7:05 am - 10:05 am
ITM
-
IAD
16h 00m
1 stop
$1,034ANA
Mon, Apr 13 - Wed, Apr 29
Japan Airlines Logo
9:32 am - 8:30 pm
DCA
-
ITM
21h 58m
2 stops
Japan Airlines Logo
2:35 pm - 10:15 pm
ITM
-
DCA
20h 40m
2 stops
$1,044Japan Airlines
Mon, Apr 13 - Wed, Apr 29
Japan Airlines Logo
11:36 am - 8:30 pm
DCA
-
ITM
19h 54m
2 stops
Japan Airlines Logo
2:35 pm - 10:15 pm
ITM
-
DCA
20h 40m
2 stops
$1,054Japan Airlines
Sun, Apr 19 - Thu, Apr 30
United Airlines Logo
7:00 am - 5:05 pm
DCA
-
ITM
21h 05m
2 stops
United Airlines Logo
12:55 pm - 9:31 pm
ITM
-
DCA
21h 36m
2 stops
$1,076United Airlines
Sun, Apr 12 - Wed, Apr 22
United Airlines Logo
6:00 am - 5:05 pm
IAD
-
ITM
22h 05m
2 stops
United Airlines Logo
12:55 pm - 9:04 pm
ITM
-
IAD
21h 09m
2 stops
$1,141United Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Osaka flights

Get data-powered insights and trends into flights from Washington, D.C. 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. 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. 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. to Osaka is January, where tickets cost $1,072 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $1,591 and $1,575 respectively.

Good to know

Low seasonAugust
Cheapest flight$444
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Reagan Washington National Airport to Osaka Kansai Intl

When to book flights from Washington, D.C. to Osaka

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Osaka

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Osaka was $444 for a one-way ticket and $951 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Osaka?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Osaka?

    There are 2 airports in Washington, D.C. (Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl) and 2 airports in Osaka (Osaka Itami and Osaka Kansai Intl). The cheapest flights are generally found on the Reagan Washington National Airport to Osaka Kansai Intl flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Osaka?

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

  • Which airline alliances offer flights from Washington, D.C. to Osaka?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Osaka.

  • Which is the best airline for flights from Washington, D.C. to Osaka, ANA or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Osaka are ANA and Japan Airlines. With an average price for the route of $1,452 and an overall rating of 8.4, ANA is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $1,226 and an overall rating of 8.3.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Osaka.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka from Washington, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Washington, D.C. 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 Washington, D.C. 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 1097 reviews
7.8Food
8.7Crew
7.9Entertainment
8.2Comfort
8.5Boarding
Airline reviews

I originally thought I was booking with ANA airlines and didn't see "operated by United" until the day of. I even thought the United check-in update was a scam so ended up checking in 3 hours before the flight, causing separate seating and uncomfortable middle seats.

4.0 OkayBryan, Feb 2026
SFO - NRT
Read more ANA reviews

I originally thought I was booking with ANA airlines and didn't see "operated by United" until the day of. I even thought the United check-in update was a scam so ended up checking in 3 hours before the flight, causing separate seating and uncomfortable middle seats.

Very disappointing. Our flight was delayed for almost 6 hours with the lost time disrupting our travel plans. United should have known that any delay (approximately and hour) triggered a no-fly/work because according to the FAA they had to many flight hours. After the mechanical delay (approximately an hour) we had to wait for a fresh crew change. Seems to me that United could have anticipated this incident. Again, a very disappointing travel experience.

Excellent crew, food and comfort from LA to Narita. Flight from Narita to Manila was just okay, Food and comfort needs to improve. The business class was not comfortable.

Lots of leg room in premium. Departed exactly on time. Friendly crew.

My connecting flight from CTS to Narita was late and I missed my connection. A very nice agent met me when I deplaned and ensured that I caught the next flight back to SFO. Fantastic customer service :)

Cabin Crew was excellent. They took care of everything requested. Flight was good

I didn’t know that my connecting flight from Japan to Hawaii was at a different airport - arrived in Haneda (ticket said Tokyo but didn’t notice the airport name) and had to get my bags and go out of immigration and back in to go to Narita airport 2 hours away. Such a hassle and SOOO confusing and complicated. Check your airports IN ADVANCE and NEVER book if you have to change airports. 40+ years of flying and first time had this. Never again. ANA is great but booking agencies will sell you a connection that you have a good chance of missing - even under the best circumstances.

I was charged $200 for a 2nd checked bag, which is unreasonably high and feels like price gouging. Other than that the experience was excellent.

The ROOM was great. We would love to have it on all of our flights. LOL

I would prefer to fly with Japanese airlines over American ones. They have better food and service overall

Not as good as I expected, I couldn't use the screen to watch movies or anything else because it wasn't 'STEADY' AT ALL, it moved every single time that the passenger who sat on that seat moved, that caused me fell dizzy and nauseous when I tried to use it, so I ended up with only sleeping and eating with no entertainment all my haul flight on premium economy seat, plus the passenger who sat next to me, she just loved to spread her very long hair down on my shoulder, face, arm, sometimes her hair just whacked my face till I really wanted to offer her my hairband!, super annoying 😑 and that my bad experience with that flight.

The flights were on time and the cabin crew were very nice. The only downside was that the food was not good.

Good pilot and crew. No food or beverage on this flight Entertainment is via own device thru plane's wifi.

My plans changed and I tried to cancel or change the flight for credit but was giving the run around and denied . Not great

Excellent service, excellent food and beverage options, plenty of leg room

Checking in as an international flyer is a bit tedious

I was so hungry , from Boston to Tokyo, only 2 big food .

It was okay, short flight so nothing much to comment.

The crew was nice, the food could be better, and at least 2 bathroom stalls were out of service.

The crew was attentive and provided everything I needed. The food in business class was excellent.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

While I didn’t watch much tv I would have liked a few more options of TV series from Apple TV or hbo max ..

I requested a low sodium meal. Reason being, I take medicine for high blood pressure and I wear compression socks on long flights to help with leg swelling. Having less sodium in meals really helps me feel better on long flights. I received my initial low sodium meal after takeoff. Just before landing, the crew came through with the meal cart and offered me what was being served. I said no thank you and then noticed my low sodium meal in the meal cart, with my name and seat assignment on it. I motioned to the crew member, but he grabbed the meal cart and proceeded to move to the rear of the aircraft. He didn’t see me or other passengers who had attempted to get this attention. He was more concerned about completing meal service since we were due to land in under 45 minutes. I pressed the call light five times from my seat to receive help, but no crew member responded to me. So, I didn’t receive a second meal, one that I requested (the low sodium option). This led me to have a migraine from only eating one meal on an 11-hour flight. This is why I’m not a fan of flying US-based airlines overseas. The crew members continue to show the absolute worst customer service experience. I would not recommend flying American for overseas flights.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

Everything went smoothly — on-time departure and very organized boarding. We pre-ordered vegan meals, which were fine but not especially memorable. We may have had slightly higher expectations given it was a Japanese airline. It felt like a dinner meal than a breakfast. Overall, it was a good flight experience and we would recommend it.

This flight with a lot empty place , and I have more room, feeling comfortable.

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Snacks were just placed and many people were hungry and unaware they were available. Ran out of water bottles. Attendants not available. Missed entire meal.

The cabin crew was professional and there were plenty of movie choices, but the food was a bit sub-standard.

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

The flight was delayed an hour, but not because of Air Canada. The crew was polite, professional, and competent. The food was above average for Air Canada, but just fine. The stand out for me in the 10 hour flight was the entertainment package. The best of any airline I’ve experienced so far. Looking forward to my return flight to finish some more of the shows I was watching.

Very good!👍!especially the typhoon coming, the speaking Chinese language service is excellent 👍!

Not to out myself as both a child at heart and kind of a terrible person, but the Pokémon safety video was the first time I watched an airplane safety video in like a decade. It was ADORABLE!! A great way to encourage attention from young and old alike.

Everything you need to know for your flight from Washington, D.C. to Osaka

Cabin class types available on flights from Washington, D.C. to Osaka

Cabin classes available on flights from Washington, D.C. to Osaka. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.