How does KAYAK find such low prices on flights from Illinois to Saint-Denis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Saint-Denis. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Saint-Denis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint-Denis from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Saint-Denis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Saint-Denis with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Saint-Denis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint-Denis from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$1,667 CHEAP FLIGHTS from Illinois to Saint-Denis

RUN

KAYAK searches hundreds of travel sites at once for deals on flights to Saint-Denis

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheap Flights from Illinois to Saint-Denis

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Saint-Denis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Round-trip

One-way

Recent round-trip flight deals from Illinois to Saint-Denis

KAYAK's recommended round-trip deals from the most popular airlines that fly from Illinois to Saint-Denis.

Discover the best prices for you by selecting your travel dates on KAYAK.

Choose your dates

2:19 pm - 9:00 amORD-RUN

33h 41m3 stops

7:55 pm - 8:55 amRUN-ORD

46h 00m3 stops

$1,667

Find Deal

Fri, May 16 - Fri, May 23

7:15 pm - 11:55 amORD-RUN

31h 40m2 stops

7:55 pm - 4:10 pmRUN-ORD

29h 15m2 stops

$1,708

Find Deal

Fri, May 16 - Fri, May 23

7:15 pm - 11:55 amORD-RUN

31h 40m3 stops

7:55 pm - 4:10 pmRUN-ORD

29h 15m2 stops

$1,722

Find Deal

Fri, May 16 - Fri, May 23

6:05 pm - 11:55 amORD-RUN

32h 50m1 stop

7:55 pm - 1:10 pmRUN-ORD

26h 15m1 stop

$1,826

Find Deal

Fri, May 16 - Fri, May 23

5:45 pm - 9:00 amORD-RUN

30h 15m2 stops

10:10 pm - 5:45 amRUN-ORD

40h 35m2 stops

$1,966

Find Deal

Tue, Apr 15 - Sat, Apr 19

5:45 pm - 9:00 amORD-RUN

30h 15m2 stops

10:10 pm - 6:33 amRUN-ORD

41h 23m3 stops

$2,005

Find Deal

Tue, Apr 15 - Sat, Apr 19

7:25 pm - 8:10 amORD-RUN

27h 45m2 stops

7:55 pm - 9:15 pmRUN-ORD

34h 20m2 stops

$2,177

Find Deal

Tue, Apr 15 - Sat, Apr 19

5:10 pm - 9:00 amORD-RUN

30h 50m1 stop

8:00 am - 9:15 pmRUN-ORD

46h 15m2 stops

$2,183

Find Deal

Tue, Apr 15 - Sat, Apr 19

5:10 pm - 5:30 amORD-RUN

27h 20m1 stop

9:00 pm - 3:00 pmRUN-ORD

27h 00m1 stop

$2,222Air France

Find Deal

Tue, Apr 15 - Sat, Apr 19

5:10 pm - 5:30 amORD-RUN

27h 20m1 stop

9:00 pm - 3:00 pmRUN-ORD

27h 00m1 stop

$2,233Air France

Find Deal

Tue, Apr 15 - Sat, Apr 19

Cheapest flight	$1,667

Flight from Chicago to Saint-Denis

How does KAYAK find such low prices on flights from Illinois to Saint-Denis?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Saint-Denis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Saint-Denis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint-Denis from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Saint-Denis?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Saint-Denis with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Saint-Denis?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint-Denis from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

RUN

$1,667 Find Cheap Flights from Illinois to Saint-Denis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to Saint-Denis departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

KAYAK searches hundreds of travel sites at once for deals on flights to Saint-Denis

Cheap Flights from Illinois to Saint-Denis

Recent round-trip flight deals from Illinois to Saint-Denis

Recent one-way flight deals from Illinois to Saint-Denis

Good to know

Cheapest flight

FAQs for booking flights from Illinois to Saint-Denis

How does KAYAK find such low prices on flights from Illinois to Saint-Denis?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Saint-Denis?

What is the Hacker Fare option on flights from Illinois to Saint-Denis?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Saint-Denis?

Everything you need to know for your flight to Saint-Denis

Information on the airport you'll fly into in Saint-Denis

Cabin class types available on flights to Illinois

Cabin classes available on flights to Saint-Denis. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to Saint-Denis with a hotel stay or car rental

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Flights from domestic origins to Saint-Denis

Flights from all regions of Illinois to Saint-Denis. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Choose which airport to fly into in Saint-Denis