The cheapest times to fly from IAD to ITM are

  • January 1st to March 4th
  • August 20th to December 16th

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 ITM is mid to late September. Prices can be as high as $3295 for Friday flights during late July, or as low as $969 for Tuesday flights around mid to late September.


When to Fly to Osaka

Flying from Washington, DC (IAD) to Osaka (ITM) will usually cost between $1085 to $2087 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $1033. Due to high demand the most expensive time to fly is late July, with an average price of $2699. Planning your trip to low-cost times can easily save you $1666 on economy flights and even more on first-class flights. Generally, any price below $1372 can be considered a good price for a round-trip IAD to ITM flight.

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

IAD to ITM Flight Prices

Compared to other flights, the IAD to ITM flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to ITM, and Monday the cheapest day to fly back into IAD. Fridays are the most expensive days to fly to Osaka, and Saturdays are the most expensive days to return to Washington. Selecting flights on the least expensive days could save you up to $121 (8%) 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 $1388. Return trip prices are from the ITM 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 ITM 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 27 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from IAD to ITM while comparing.

Destination alternative #1: Kansai International Airport (KIX) in Osaka

  • 27 miles (43 km) away from ITM
  • Usually 10.24% less expensive than ITM
  • 1-layover flights available

See IAD to KIX flights


Flight Hacking IAD to ITM

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 ITM — but Champion Traveler does!

Hack #1: Las Vegas, NV (IAD > LAS > ITM)

  • Price for both tickets: $1056
  • Average savings: $316 (23.03%)

See IAD to LAS flights

Hack #2: Pittsburgh, PA (IAD > PIT > ITM)

  • Price for both tickets: $1130
  • Average savings: $242 (17.64%)

See IAD to PIT flights

Hack #3: Charlotte, NC (IAD > CLT > ITM)

  • Price for both tickets: $1133
  • Average savings: $239 (17.42%)

See IAD to CLT flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Air Canada, Alaska, American, ANA, Austrian, Delta, Fiji Airways, JAL, Lufthansa, Qatar Airways, SWISS, United, Vietnam Airlines, and potentially more during busy seasons.

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

The distance between the two airports is roughly 6924 miles or 11143 kilometers.

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

The real-world flight time for a nonstop IAD to ITM flight is about 13 hour 27 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 59 available flights from IAD to ITM.


Airport Location Info


Departing Airport

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

Return Airport

Destination codeITM
Destination airport nameOsaka 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.