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$764+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
RNS — ORD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Round-trip from

$764
(Delta)
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 April 2, 2025.

This Delta deal was found by Cheapflights users on 3/31. 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.
Wed 4/1611:45 amRNS - ORD
2 stops19h 14mDelta
Sun 4/205:10 pmORD - RNS
1 stop14h 05mDelta
Deal found 3/31$764
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1611:45 amRNS - ORD
2 stops19h 14mMultiple Airlines
Sun 4/205:10 pmORD - RNS
1 stop14h 05mMultiple Airlines
Deal found 3/31$837
This Delta deal was found by Cheapflights users on 3/31. 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.
Wed 4/1611:45 amRNS - MDW
2 stops17h 37mDelta
Sun 4/203:02 pmMDW - RNS
2 stops16h 13mDelta
Deal found 3/31$909
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:50 pmRNS - ORD
1 stop27h 20mAir France
Sat 8/25:10 pmORD - RNS
1 stop10h 55mAir France
Deal found 3/31$1,001
This KLM deal was found by Cheapflights users on 3/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:50 pmRNS - ORD
1 stop27h 20mKLM
Sun 8/35:10 pmORD - RNS
1 stop10h 55mKLM
Deal found 3/31$1,003

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 April 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

Wed 4/16

11:45 am-11:59 pm

2 stops19h 14m

Chicago O'Hare Intl

Sun 4/20

5:10 pm-2:15 pm

1 stop14h 05m

$764

RennesChicago

RNS - ORD

RNSORD

Rennes St Jacques

Wed 4/16

11:45 am-11:59 pm

2 stops19h 14m

Chicago O'Hare Intl

Sun 4/20

5:10 pm-2:15 pm

1 stop14h 05m

$837

RennesChicago

RNS - MDW

RNSMDW

Rennes St Jacques

Wed 4/16

11:45 am-10:22 pm

2 stops17h 37m

Chicago Midway

Sun 4/20

3:02 pm-2:15 pm

2 stops16h 13m

$909

RennesChicago

RNS - ORD

RNSORD

Rennes St Jacques

Thu 7/10

5:50 pm-2:10 pm

1 stop27h 20m

Chicago O'Hare Intl

Sat 8/2

5:10 pm-11:05 am

1 stop10h 55m

$1,001

RennesChicago

RNS - ORD

RNSORD

Rennes St Jacques

Thu 7/10

5:50 pm-2:10 pm

1 stop27h 20m

Chicago O'Hare Intl

Sun 8/3

5:10 pm-11:05 am

1 stop10h 55m

$1,003

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 2, 2025.
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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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