The cheapest times to fly from IAD to RDU are
- January 1st to March 4th
- May 21st to July 15th
- September 3rd to November 18th (except the week of September 24th)
- December 3rd to March 4th (except the weeks of December 17th and December 24th)
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 RDU is early December. Prices can be as high as $432 for Sunday flights during early August, or as low as $129 for Tuesday flights around early December.
When to Fly to Raleigh
Flying from Washington, DC (IAD) to Raleigh/Durham, NC (RDU) will usually cost between $137 to $250 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $159. Due to high demand the most expensive time to fly is early August, with an average price of $239. Planning your trip to low-cost times can easily save you $81 on economy flights and even more on first-class flights. Generally, any price below $202 can be considered a good price for a round-trip IAD to RDU flight.
See below for a graph of average weekly prices for the IAD to RDU route. All prices are for round-trip tickets in USD.
Compared to other flights, the IAD to RDU flight is much cheaper than the average and costs much less than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.56, which is above average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to fly to RDU, and Wednesday the cheapest day to fly back into IAD. 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 $69 (31%) 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 $157. Return trip prices are from the RDU to IAD flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from IAD to RDU can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 23 minutes may be realistic.
Flight Questions Answered
Still have questions about flying from IAD to RDU? We’ve got answers.
Which airlines fly this route?
You can find 6 major airlines flying this route most often: American, Delta, Frontier, Qantas, Southwest, United, and potentially more during busy seasons.
How far away is it from Raleigh-Durham International Airport to Washington Dulles International Airport?
The distance between the two airports is roughly 224 miles or 360 kilometers.
How long does it take to fly from IAD to RDU?
The real-world flight time for a nonstop IAD to RDU flight is about 1 hour 23 minutes.
How many flights go between Washington, DC and Raleigh/Durham, NC?
It depends on the day of the week and the date, but a typical day might have around 74 available flights from IAD to RDU.
Airport Location Info
|Origination airport name||Washington Dulles International Airport|
|Country||the United States|
|Destination airport name||Raleigh-Durham International Airport|
|Country||the United States|
Late and Early Flight Data
Flights from IAD to RDU tend to depart as late as the average flight. According to our recently updated data, 26% of flights departed 5 or more minutes late, and 15% of flights left 5 or more minutes early. On average you can expect to leave RDU heading for IAD about 13 minutes late. This does significantly impact arrival time, as the average landing time in Raleigh/Durham, NC is about 6 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:
- United: 8 minutes late
- Mesa: 18 minutes late
- Some airlines not reporting
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.