The cheapest times to fly from IAD to RUN are

  • January 8th to April 1st (except the weeks of February 26th and March 12th)
  • July 30th to October 7th
  • October 29th to December 2nd

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 RUN is late August to early September. Prices can be as high as $4290 for Wednesday flights during late June, or as low as $1382 for Thursday flights around late August to early September.


When to Fly to Saint-Denis

Flying from Washington, DC (IAD) to Reunion Island (RUN) will usually cost between $1387 to $2253 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late August to early September with an average ticket price of $1382. Due to high demand the most expensive time to fly is late June, with an average price of $2234. Planning your trip to low-cost times can easily save you $852 on economy flights and even more on first-class flights. Generally, any price below $1728 can be considered a good price for a round-trip IAD to RUN flight.

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

IAD to RUN Flight Prices

Compared to other flights, the IAD to RUN flight is 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 $0.11, which is far below average.


Flight Prices by Day of the Week

Thursday is usually the cheapest day to fly to RUN, and Monday the cheapest day to fly back into IAD. Wednesdays are the most expensive days to fly to Saint-Denis, and Fridays are the most expensive days to return to Washington. Selecting flights on the least expensive days could save you up to $138 (7%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Thursday and returning a week later will cost an average of $1779. Return trip prices are from the RUN 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 RUN can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 17 hour 54 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 RUN while comparing.

Destination alternative #1: Sir Seewoosagur Ramgoolam International Airport (MRU) in Mauritius Island

  • 144 miles (232 km) away from RUN
  • Usually 28.46% less expensive than RUN
  • 1-layover flights available

See IAD to MRU flights


Flight Hacking IAD to RUN

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 RUN — but Champion Traveler does!

Hack #1: Paris (IAD > ORY > RUN)

  • Price for both tickets: $1396
  • Average savings: $332 (19.2%)

See IAD to ORY flights

Hack #2: Paris (IAD > CDG > RUN)

  • Price for both tickets: $1417
  • Average savings: $311 (17.99%)

See IAD to CDG flights

Hack #3: Mauritius Island (IAD > MRU > RUN)

  • Price for both tickets: $1560
  • Average savings: $168 (9.71%)

See IAD to MRU flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Air Austral, Air France, Air India, atlasglobal, British Airways, Brussels Airlines, Corsair, Delta, KLM, Lufthansa, Royal Air Maroc, Tap Air Portugal, United, and potentially more during busy seasons.

How far away is it from La Reunion Roland Garros Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 9395 miles or 15120 kilometers.

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

The real-world flight time for a nonstop IAD to RUN flight is about 17 hour 54 minutes.

How many flights go between Washington, DC and Reunion Island?

It depends on the day of the week and the date, but a typical day might have around 13 available flights from IAD to RUN.


Airport Location Info


Departing Airport

Origination code IAD
Origination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5

Return Airport

Destination code RUN
Destination airport name La Reunion Roland Garros Airport
City Reunion Island
Country Reunion
Latitude -20.9
Longitude 55.5


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.