The cheapest times to fly from ROR to IAD are

  • March 12th to June 10th (except the week of May 7th)
  • June 25th to July 15th
  • August 20th to November 11th (except the week of October 22nd)

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 ROR to IAD is early to mid September. Prices can be as high as $4951 for Sunday flights during early January, or as low as $1615 for Wednesday flights around early to mid September.


When to Fly to Washington

Flying from Koror (ROR) to Washington, DC (IAD) will usually cost between $1631 to $3614 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $1643. Due to high demand the most expensive time to fly is early January, with an average price of $3049. Planning your trip to low-cost times can easily save you $1406 on economy flights and even more on first-class flights. Generally, any price below $1681 can be considered a good price for a round-trip ROR to IAD flight.

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

ROR to IAD Flight Prices

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


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to IAD, and Monday the cheapest day to fly back into ROR. Sundays 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 $1902 (52%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $1678. Return trip prices are from the IAD to ROR 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 ROR to IAD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 16 hour 31 minutes may not be realistic.


Flight Hacking ROR to IAD

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 ROR to IAD — but Champion Traveler does!

Hack #1: Los Angeles, CA (ROR > LAX > IAD)

  • Price for both tickets: $1643
  • Average savings: $38 (2.26%)

See ROR to flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Alaska, American, ANA, Asiana, China Airlines, Delta, EVA Air, Hawaiian, JAL, Korean Air, Lufthansa, Singapore Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 8634 miles or 13895 kilometers.

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

The real-world flight time for a nonstop ROR to IAD flight is about 16 hour 31 minutes.

How many flights go between Koror and Washington, DC?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from ROR to IAD.


Airport Location Info


Departing Airport

Origination codeROR
Origination airport nameBabelthuap Airport

Return Airport

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


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.