The cheapest times to fly from IAD to KIX are

  • January 1st to March 18th
  • August 27th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAD to KIX is late January and early February. Prices can be as high as $2033 for Saturday flights during late July, or as low as $954 for Tuesday flights around late January and early February.


When to Fly to Osaka

Flying from Washington, DC (IAD) to Osaka (KIX) will usually cost between $1032 to $1625 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $1043. Due to high demand the most expensive time to fly is late July, with an average price of $1751. Planning your trip to low-cost times can easily save you $708 on economy flights and even more on first-class flights. Generally, any price below $1232 can be considered a good price for a round-trip IAD to KIX flight.

See below for a graph of average weekly prices for the IAD to KIX route. All prices are for round-trip tickets in USD.

IAD to KIX Flight Prices

Compared to other flights, the IAD to KIX flight is slightly more expensive than the average and costs about as much as the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to KIX, and Wednesday the cheapest day to fly back into IAD. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $184 (13%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1217. Return trip prices are from the KIX to IAD flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAD to KIX can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 13 hour 30 minutes may not be realistic.


Flight Hacking IAD to KIX

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAD to KIX — but Champion Traveler does!

Hack #1: New York, NY (IAD > JFK > KIX)

  • Price for both tickets: $984
  • Average savings: $248 (20.1%)

See IAD to JFK flights

Hack #2: Las Vegas, NV (IAD > LAS > KIX)

  • Price for both tickets: $1050
  • Average savings: $182 (14.74%)

See IAD to LAS flights

Hack #3: Taipei (IAD > TPE > KIX)

  • Price for both tickets: $1059
  • Average savings: $173 (14.01%)

See IAD to TPE flights


Flight Questions Answered

Still have questions about flying from IAD to KIX? We’ve got answers.

Which airlines fly this route?

You can find 27 major airlines flying this route most often: Air Canada, Air China, Air France, Alaska, American, ANA, Asiana, Austrian, British Airways, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, Emirates, EVA Air, Fiji Airways, Iberia, JAL, KLM, Korean Air, Lufthansa, Qatar Airways, SWISS, Turkish Airlines, United, Xiamen, and potentially more during busy seasons.

How far away is it from Kansai International Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 6951 miles or 11187 kilometers.

How long does it take to fly from IAD to KIX?

The real-world flight time for a nonstop IAD to KIX flight is about 13 hour 30 minutes.

How many flights go between Washington, DC and Osaka?

It depends on the day of the week and the date, but a typical day might have around 74 available flights from IAD to KIX.


Airport Location Info


Departing Airport

Origination codeIAD
Origination airport nameWashington Dulles International Airport
CityWashington, DC
Countrythe United States

Return Airport

Destination codeKIX
Destination airport nameKansai International Airport


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.