The cheapest times to fly from IAD to PRG are

  • January 8th to April 1st
  • April 23rd to June 3rd
  • October 8th to December 9th (except the week of October 15th)

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 PRG is late February and early March. Prices can be as high as $1173 for Saturday flights during mid December, or as low as $581 for Monday flights around late February and early March.


When to Fly to Prague

Flying from Washington, DC (IAD) to Prague (PRG) will usually cost between $610 to $983 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late February and early March with an average ticket price of $687. Due to high demand the most expensive time to fly is mid December, with an average price of $1033. Planning your trip to low-cost times can easily save you $347 on economy flights and even more on first-class flights. Generally, any price below $833 can be considered a good price for a round-trip IAD to PRG flight.

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

IAD to PRG Flight Prices

Compared to other flights, the IAD to PRG flight is cheaper than the average and costs less 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

Monday is usually the cheapest day to fly to PRG, and Tuesday 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 $101 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $773. Return trip prices are from the PRG 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 PRG can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 8 hour 43 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 PRG while comparing.

Destination alternative #1: Strachowice Airport (WRO) in Wroclaw

  • 134 miles (216 km) away from PRG
  • Usually 10.92% less expensive than PRG
  • 1-layover flights available

See IAD to WRO flights


Flight Hacking IAD to PRG

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 PRG — but Champion Traveler does!

Hack #1: London (IAD > LHR > PRG)

  • Price for both tickets: $631
  • Average savings: $203 (24.31%)

See IAD to LHR flights

Hack #2: London (IAD > LGW > PRG)

  • Price for both tickets: $725
  • Average savings: $108 (12.97%)

See IAD to LGW flights

Hack #3: Nice (IAD > NCE > PRG)

  • Price for both tickets: $742
  • Average savings: $91 (10.92%)

See IAD to NCE flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 31 major airlines flying this route most often: Aer Lingus, Aeroflot, Air Canada, Air France, Air Malta, Air Transat, Alitalia, American, Austrian, British Airways, Brussels Airlines, CSA, Delta, Eurowings, Finnair, Iberia, Icelandair, KLM, LOT, Lufthansa, Porter Airlines, Royal Air Maroc, SAS, SWISS, Tap Air Portugal, THAI, Turkish Airlines, United, Virgin Atlantic, Volotea, Wizz Air, and potentially more during busy seasons.

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

The distance between the two airports is roughly 4293 miles or 6909 kilometers.

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

The real-world flight time for a nonstop IAD to PRG flight is about 8 hour 43 minutes.

How many flights go between Washington, DC and Prague?

It depends on the day of the week and the date, but a typical day might have around 72 available flights from IAD to PRG.


Airport Location Info


Departing Airport

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

Return Airport

Destination codePRG
Destination airport nameRuzyne 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.