$935 Cheap Flights from Rennes (RNS) to Chicago (ORD)

View $935 flight on Wed, Sep 17, 2025Opens in a new window

Popular airlines from Rennes (RNS-Saint-Jacques) to Chicago O'Hare Intl. Airport (ORD)

Cheap Flights from Rennes to Chicago (RNS-ORD)

Prices were available within the past 7 days and start at $935 for one-way flights and $867 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$867 Roundtrip, found 21 hours ago
$867
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $867 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$872 Roundtrip, found 21 hours ago
$872
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $872 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$900 Roundtrip, found 21 hours ago
$900
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $900 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$916 Roundtrip, found 21 hours ago
$916
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $916 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$939 Roundtrip, found 21 hours ago
$939
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $939 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$943 Roundtrip, found 21 hours ago
$943
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $943 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$958 Roundtrip, found 21 hours ago
$958
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $958 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$972 Roundtrip, found 21 hours ago
$972
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $972 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$976 Roundtrip, found 21 hours ago
$976
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $976 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$981 Roundtrip, found 21 hours ago
$981
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $981 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$986 Roundtrip, found 21 hours ago
$986
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $986 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$987 Roundtrip, found 21 hours ago
$987
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $987 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$1,012 Roundtrip, found 21 hours ago
$1,012
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $1,012 found 21 hours ago
Aer Lingus
Wed, Sep 17 - Sun, Sep 21
RNS
Rennes
ORD
Chicago
$1,017 Roundtrip, found 21 hours ago
$1,017
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Rennes to Chicago, returning Sun, Sep 21, priced at $1,017 found 21 hours ago
Flights from Rennes (RNS) to Chicago (ORD)
Origin airport
Saint-Jacques
Destination airport
O'Hare Intl.
Roundtrip price
$867
Distance
4003 mi

Rennes to Chicago Flights

The cheapest times to fly from Rennes to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rennes to Chicago are during the month of September. You can find some of the cheapest flights from Rennes to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rennes to Chicago

Sunday is one of the best days to book for cheap flights from Rennes to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rennes to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rennes to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $935 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rennes to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rennes to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD) cost?
Snag a cheap one-way flight from $935 or cheap return flight from $867 from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD)?
September is the cheapest month to fly from RNS to ORD. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest RNS to ORD flight.
How many flights per day from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD)?
There are no daily nonstop flights from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from RNS to ORD?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD)?
To avoid possible delays on the Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD) route, aim to fly before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD) last-minute?
Last-minute bookings from RNS to ORD are typically more expensive. For the lowest prices, start looking for flights well ahead of time. That being said, if you're flexible with your travel plans, you may land a cheap fare just before your departure.
Is it cheaper to book a RNS to ORD flight and hotel package?
You can save money by booking a RNS to ORD flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've selected your preferred accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Saint-Jacques Airport (RNS) to O'Hare Intl. Airport (ORD)?
Usually, it's possible to reschedule or cancel your RNS to ORD flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.