The cheapest times to fly from RNS to ORD are

  • January 8th to April 29th (except the week of April 2nd)
  • August 27th to October 7th (except the week of September 17th)
  • October 29th to December 9th

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 RNS to ORD is late February and early March. Prices can be as high as $1868 for Friday flights during early August, or as low as $506 for Wednesday flights around late February and early March.


When to Fly to Chicago

Flying from Rennes (RNS) to Chicago, IL (ORD) will usually cost between $540 to $1489 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 $525. Due to high demand the most expensive time to fly is early August, with an average price of $1583. Planning your trip to low-cost times can easily save you $1058 on economy flights and even more on first-class flights. Generally, any price below $688 can be considered a good price for a round-trip RNS to ORD flight.

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

RNS to ORD Flight Prices

Compared to other flights, the RNS to ORD flight is cheaper than the average and costs less than the average flight leaving from Rennes. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Chicago, and Saturdays are the most expensive days to return to Rennes. Selecting flights on the least expensive days could save you up to $117 (7%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $745. Return trip prices are from the ORD to RNS 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 RNS to ORD 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 11 minutes may not be realistic.


Flight Hacking RNS to ORD

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 RNS to ORD — but Champion Traveler does!

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

  • Price for both tickets: $611
  • Average savings: $77 (11.19%)

See RNS to CDG flights

Hack #2: Paris (RNS > CDG > ORD)

  • Price for both tickets: $638
  • Average savings: $51 (7.34%)

See RNS to BCN flights

Hack #3: Amsterdam (RNS > AMS > ORD)

  • Price for both tickets: $688
  • Average savings: $1 (0.07%)

See RNS to AMS flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Aer Lingus, Air France, Alitalia, American, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Kenya Airways, KLM, Lufthansa, United, and potentially more during busy seasons.

How far away is it from Chicago O’Hare International Airport to Rennes Saint Jacques Airport?

The distance between the two airports is roughly 4003 miles or 6442 kilometers.

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

The real-world flight time for a nonstop RNS to ORD flight is about 8 hour 11 minutes.

How many flights go between Rennes and Chicago, IL?

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


Airport Location Info


Departing Airport

Origination code RNS
Origination airport name Rennes Saint Jacques Airport
City Rennes
Country France
Latitude 48.1
Longitude -1.7

Return Airport

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


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.