The cheapest times to fly from IAD to JSI are

  • June 18th to July 15th
  • July 30th to August 12th

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 JSI is early July. Prices can be as high as $6231 for Friday flights during mid to late August, or as low as $973 for Monday flights around early July.


When to Fly to Skiathos

Flying from Washington, DC (IAD) to Skiathos (JSI) will usually cost between $973 to $6231 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early July with an average ticket price of $2583. Due to high demand the most expensive time to fly is mid to late August, with an average price of $4050. Planning your trip to low-cost times can easily save you $1467 on economy flights and even more on first-class flights. Generally, any price below $2438 can be considered a good price for a round-trip IAD to JSI flight.

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

IAD to JSI Flight Prices

Compared to other flights, the IAD to JSI flight is more expensive than the average and costs more than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.3, which is in the normal range for a flight.


Flight Prices by Day of the Week

Monday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Skiathos, and Tuesdays are the most expensive days to return to Washington. Selecting flights on the least expensive days could save you up to $4288 (72%) 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 $1365. Return trip prices are from the JSI 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 JSI can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 8 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 JSI while comparing.

Destination alternative #1: Eleftherios Venizelos International Airport (ATH) in Athens

  • 89 miles (143 km) away from JSI
  • Usually 61.77% less expensive than JSI
  • 1-layover flights available

See IAD to ATH flights

Destination alternative #2: Makedonia Airport (SKG) in Thessaloniki

  • 97 miles (156 km) away from JSI
  • Usually 57.22% less expensive than JSI
  • 1-layover flights available

See IAD to SKG flights

Destination alternative #3: Aktio Airport (PVK) in Preveza

  • 148 miles (238 km) away from JSI
  • Usually 12.22% less expensive than JSI
  • 1-layover flights available

See IAD to PVK flights


Flight Hacking IAD to JSI

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 JSI — but Champion Traveler does!

Hack #1: Bristol (IAD > BRS > JSI)

  • Price for both tickets: $978
  • Average savings: $1460 (59.89%)

See IAD to BRS flights

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

  • Price for both tickets: $997
  • Average savings: $1442 (59.13%)

See IAD to LGW flights

Hack #3: Venice (IAD > VCE > JSI)

  • Price for both tickets: $1050
  • Average savings: $1388 (56.93%)

See IAD to VCE flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 16 major airlines flying this route most often: Air Canada, Air France, Alitalia, American, Austrian, British Airways, Delta, EgyptAir, Finnair, Hainan, Iberia, KLM, Lufthansa, Olympic, Turkish Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5084 miles or 8182 kilometers.

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

The real-world flight time for a nonstop IAD to JSI flight is about 10 hour 8 minutes.

How many flights go between Washington, DC and Skiathos?

It depends on the day of the week and the date, but a typical day might have around 4 available flights from IAD to JSI.


Airport Location Info


Departing Airport

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

Return Airport

Destination codeJSI
Destination airport nameAlexandros Papadiamantis 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.