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$772+ Cheap flights from Rennes (RNS) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — ORD
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheap flight deals from Rennes to Illinois

Keep the following information in mind while searching for Rennes to Illinois flight deals. Data was last updated August 2, 2025.

Round-trip from

$772
(KLM)
From Rennes St Jacques to Illinois
Search Deals

Find flight deals from Rennes to Illinois

Cheapest flights from Rennes to Illinois
Explore the most affordable flight options available from Rennes to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

This KLM deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:35 pmRNS - ORD
1 stop28h 35mKLM
Mon 9/225:10 pmORD - RNS
1 stop13h 35mKLM
Deal found 8/1$772
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:35 pmRNS - ORD
1 stop27h 45mDelta
Mon 12/810:40 amORD - RNS
2 stops16h 40mDelta
Deal found 7/31$915
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:35 pmRNS - MDW
2 stops35h 09mDelta
Mon 12/81:05 pmMDW - RNS
2 stops14h 15mDelta
Deal found 7/31$921
This KLM deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1510:20 amRNS - MDW
2 stops18h 16mKLM
Mon 9/227:15 pmMDW - RNS
2 stops13h 45mKLM
Deal found 8/1$948
This Air France deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/811:20 amRNS - ORD
2 stops17h 43mMultiple Airlines
Mon 8/112:00 pmORD - RNS
2 stops14h 05mMultiple Airlines
Deal found 8/1$1,660

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rennes to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2025.
Use the filters below to find and compare flights from Rennes to Illinois that are best for you.

Fly from

Rennes

Fly to

Illinois

Route

Depart

Return

Price

RennesChicago

RNS - ORD

RNSORD

Rennes St Jacques

Mon 9/15

4:35 pm-2:10 pm

1 stop28h 35m

Chicago O'Hare Intl

Mon 9/22

5:10 pm-1:45 pm

1 stop13h 35m

$772

RennesChicago

RNS - ORD

RNSORD

Rennes St Jacques

Thu 12/4

5:35 pm-2:20 pm

1 stop27h 45m

Chicago O'Hare Intl

Mon 12/8

10:40 am-10:20 am

2 stops16h 40m

$915

RennesChicago

RNS - MDW

RNSMDW

Rennes St Jacques

Thu 12/4

5:35 pm-9:44 pm

2 stops35h 09m

Chicago Midway

Mon 12/8

1:05 pm-10:20 am

2 stops14h 15m

$921

RennesChicago

RNS - MDW

RNSMDW

Rennes St Jacques

Mon 9/15

10:20 am-9:36 pm

2 stops18h 16m

Chicago Midway

Mon 9/22

7:15 pm-4:00 pm

2 stops13h 45m

$948

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Best time to book a flight from Rennes to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Rennes with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rennes to Illinois
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated August 2, 2025.
See what other customers who have flown with Delta and KLM from Rennes to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,384 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Rennes to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Rennes to Illinois?

    Rennes St Jacques (RNS) is the airport you will fly out of if you book a flight from Rennes to Illinois. It is only a 4.0 mi journey to St Jacques (RNS) from Rennes’s city center.

  • Can I find deals for flights from Rennes to Illinois that include hotel bookings?

    Yes. In addition to deals on Rennes to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rennes to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rennes to Illinois.

  • Can I find deals for business class flights from Rennes to Illinois?

    Yes. Cheapflights offers flight deals from Rennes to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rennes to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Rennes to Illinois (average of $245). Flying from Rennes to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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