Need help booking?
Unpublished phone-only deals available
ORD to RNS: distance & flight time
Chicago (Chicago O'Hare International Airport) → Rennes (Rennes-Saint-Jacques Airport)
4,003 mi
6,443 km · 3,479 nm
8h 19m
estimated nonstop flight time
+7h
time difference · heading northeast
See live ORD→RNS fares Phone-only fares on this route — call free
Flight time details
4,003 miles nonstop takes roughly 8h 19m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- ORD — Chicago O'Hare International Airport · Chicago, United States
- RNS — Rennes-Saint-Jacques Airport · Rennes, France
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ORD
- PWK · Chicago Executive Airport9 mi away
- MDW · Chicago Midway International Airport15 mi away
- CGX · Chicago Meigs Airport17 mi away
- DPA · Dupage Airport18 mi away
Near RNS
- DNR · Dinard-Pleurtuit-Saint-Malo Airport39 mi away
- LVA · Laval-Entrammes Airport46 mi away
- VNE · Vannes-Meucon Airport51 mi away
- SNR · Saint-Nazaire-Montoir Airport56 mi away
Frequently asked questions
How far is ORD from RNS?
The flight distance from Chicago (ORD) to Rennes (RNS) is 4,003 miles (6,443 km, 3,479 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ORD to RNS?
A nonstop flight takes about 8h 19m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Chicago and Rennes?
Rennes is 7 hours ahead of Chicago.
What is the cheapest way to fly from ORD to RNS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ORD–RNS that never appear on search engines, with no booking fees.