The cheapest times to fly from ORD to IAS are

  • March 5th to May 13th
  • June 25th to July 15th
  • September 10th to December 9th (except the week of October 29th)

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 ORD to IAS is early to mid September. Prices can be as high as $3308 for Tuesday flights during mid December, or as low as $717 for Monday flights around early to mid September.


When to Fly to Iași

Flying from Chicago, IL (ORD) to Iasi (IAS) will usually cost between $731 to $2089 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 $754. Due to high demand the most expensive time to fly is mid December, with an average price of $1709. Planning your trip to low-cost times can easily save you $956 on economy flights and even more on first-class flights. Generally, any price below $953 can be considered a good price for a round-trip ORD to IAS flight.

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

ORD to IAS Flight Prices

Compared to other flights, the ORD to IAS flight is priced close to the average and costs about as much as the average flight leaving from Chicago. 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 IAS, and Sunday the cheapest day to fly back into ORD. Tuesdays are the most expensive days to fly to Iași, and Saturdays are the most expensive days to return to Chicago. Selecting flights on the least expensive days could save you up to $328 (24%) 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 $870. Return trip prices are from the IAS to ORD 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 ORD to IAS 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 12 minutes may not be realistic.


Flight Hacking ORD to IAS

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 ORD to IAS — but Champion Traveler does!

Hack #1: Barcelona (ORD > BCN > IAS)

  • Price for both tickets: $674
  • Average savings: $279 (29.28%)

See ORD to BCN flights

Hack #2: Bucharest (ORD > OTP > IAS)

  • Price for both tickets: $773
  • Average savings: $181 (18.94%)

See ORD to OTP flights

Hack #3: Munich (ORD > MUC > IAS)

  • Price for both tickets: $799
  • Average savings: $154 (16.16%)

See ORD to MUC flights


Flight Questions Answered

Still have questions about flying from ORD to IAS? We’ve got answers.

Which airlines fly this route?

You can find 11 major airlines flying this route most often: Air France, Alitalia, Austrian, British Airways, Brussels Airlines, Delta, KLM, LOT, Lufthansa, TAROM, United, and potentially more during busy seasons.

How far away is it from Iasi International Airport to Chicago O’Hare International Airport?

The distance between the two airports is roughly 5124 miles or 8246 kilometers.

How long does it take to fly from ORD to IAS?

The real-world flight time for a nonstop ORD to IAS flight is about 10 hour 12 minutes.

How many flights go between Chicago, IL and Iasi?

It depends on the day of the week and the date, but a typical day might have around 14 available flights from ORD to IAS.


Airport Location Info


Departing Airport

Origination code ORD
Origination airport name Chicago O’Hare International Airport
City Chicago, IL
Country the United States
Latitude 42
Longitude -87.9

Return Airport

Destination code IAS
Destination airport name Iasi International Airport
City Iasi
Country Romania
Latitude 47.2
Longitude 27.6


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.