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Cheap flights from Illinois to Chennai from $324

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Chennai departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Chennai

Cheap round-trip flights

Air India Logo
1:10 pm - 8:40 pmORD-MAA
21h 00m1 stop
Air India Logo
9:45 pm - 6:30 amMAA-ORD
20h 15m1 stop
$664Air India
Find Deal
Mon, Oct 20 - Wed, Nov 12
Air India Logo
1:10 pm - 10:30 pmORD-MAA
22h 50m1 stop
Air India Logo
5:30 pm - 11:10 amMAA-ORD
28h 10m2 stops
$666Air India
Find Deal
Wed, Sep 10 - Wed, Oct 22
Cathay Pacific Logo
2:40 pm - 12:35 amORD-MAA
46h 25m1 stop
Cathay Pacific Logo
1:50 am - 1:00 pmMAA-ORD
22h 40m1 stop
$690Cathay Pacific
Find Deal
Fri, Nov 21 - Tue, Dec 9
American Airlines Logo
4:54 pm - 5:15 amORD-MAA
25h 51m2 stops
American Airlines Logo
3:45 pm - 9:15 amMAA-ORD
28h 00m2 stops
$732American Airlines
Find Deal
Tue, Sep 16 - Mon, Sep 29
American Airlines Logo
4:54 pm - 5:15 amORD-MAA
25h 51m2 stops
American Airlines Logo
5:50 pm - 12:41 pmMAA-ORD
29h 21m2 stops
$795American Airlines
Find Deal
Fri, Sep 5 - Fri, Sep 12
British Airways Logo
7:10 pm - 3:30 amORD-MAA
21h 50m1 stop
British Airways Logo
5:35 am - 6:15 pmMAA-ORD
23h 10m1 stop
$799British Airways
Find Deal
Thu, Oct 2 - Thu, Oct 16
British Airways Logo
7:15 pm - 3:30 amORD-MAA
21h 45m1 stop
British Airways Logo
7:35 am - 1:50 pmMAA-ORD
41h 45m1 stop
$802British Airways
Find Deal
Mon, Sep 22 - Mon, Jan 26
Etihad Airways Logo
1:10 pm - 2:30 amORD-MAA
25h 50m1 stop
Etihad Airways Logo
3:45 pm - 8:15 amMAA-ORD
28h 00m1 stop
$806Etihad Airways
Find Deal
Tue, Nov 25 - Sun, Dec 21
Etihad Airways Logo
1:55 pm - 8:10 pmORD-MAA
19h 45m1 stop
Etihad Airways Logo
10:00 pm - 8:45 amMAA-ORD
21h 15m1 stop
$807Etihad Airways
Find Deal
Fri, Sep 19 - Fri, Oct 17
Cathay Pacific Logo
6:45 am - 12:15 amSTL-MAA
31h 00m2 stops
Cathay Pacific Logo
1:30 am - 10:50 pmMAA-STL
31h 50m2 stops
$1,320Cathay Pacific
Find Deal
Sat, Aug 30 - Fri, Sep 12

Air India flights from Illinois to Chennai

Our best Air India deals on Illinois to Chennai flight tickets
Air India
Oct 20
ORD1:10 pmChicago O'Hare Intl
21h 00m
1 stop
MAA8:40 pmChennai
Nov 12
MAA9:45 pmChennai
20h 15m
1 stop
ORD6:30 amChicago O'Hare Intl
$664
Find similar
Air India
Sep 10
ORD1:10 pmChicago O'Hare Intl
22h 50m
1 stop
MAA10:30 pmChennai
Oct 22
MAA5:30 pmChennai
28h 10m
2 stops
ORD11:10 amChicago O'Hare Intl
$666
Find similar
Air India
Sep 17
ORD1:10 pmChicago O'Hare Intl
21h 00m
1 stop
MAA8:40 pmChennai
Oct 20
MAA8:40 pmChennai
25h 00m
2 stops
ORD11:10 amChicago O'Hare Intl
$675
Find similar

Cathay Pacific flights from Illinois to Chennai

Our best Cathay Pacific deals on Illinois to Chennai flight tickets
Cathay Pacific
Nov 21
ORD2:40 pmChicago O'Hare Intl
46h 25m
1 stop
MAA12:35 amChennai
Dec 9
MAA1:50 amChennai
22h 40m
1 stop
ORD1:00 pmChicago O'Hare Intl
$690
Find similar
Cathay Pacific
Aug 30
STL6:45 amLambert-St Louis
31h 00m
2 stops
MAA12:15 amChennai
Sep 12
MAA1:30 amChennai
31h 50m
2 stops
STL10:50 pmLambert-St Louis
$1,320
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Chennai 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, momondo users made 832,500 searches. Data last updated August 10, 2025.
Use the filters below to find and compare flights from Illinois to Chennai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 10/20

1:10 pm-8:40 pm

1 stop21h 00m

Chennai

Wed 11/12

9:45 pm-6:30 am

1 stop20h 15m

$664

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Wed 9/10

1:10 pm-10:30 pm

1 stop22h 50m

Chennai

Wed 10/22

5:30 pm-11:10 am

2 stops28h 10m

$666

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 11/21

2:40 pm-12:35 am

1 stop46h 25m

Chennai

Tue 12/9

1:50 am-1:00 pm

1 stop22h 40m

$690

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 9/16

4:54 pm-5:15 am

2 stops25h 51m

Chennai

Mon 9/29

3:45 pm-9:15 am

2 stops28h 00m

$732

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 9/5

4:54 pm-5:15 am

2 stops25h 51m

Chennai

Fri 9/12

5:50 pm-12:41 pm

2 stops29h 21m

$795

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Thu 10/2

7:10 pm-3:30 am

1 stop21h 50m

Chennai

Thu 10/16

5:35 am-6:15 pm

1 stop23h 10m

$799

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 9/22

7:15 pm-3:30 am

1 stop21h 45m

Chennai

Mon 1/26

7:35 am-1:50 pm

1 stop41h 45m

$802

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 11/25

1:10 pm-2:30 am

1 stop25h 50m

Chennai

Sun 12/21

3:45 pm-8:15 am

1 stop28h 00m

$806

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 9/19

1:55 pm-8:10 pm

1 stop19h 45m

Chennai

Fri 10/17

10:00 pm-8:45 am

1 stop21h 15m

$807

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sat 8/30

6:45 am-12:15 am

2 stops31h 00m

Chennai

Fri 9/12

1:30 am-10:50 pm

2 stops31h 50m

$1,320

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chennai from

How to get the cheapest flight ticket from Illinois to Chennai

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chennai?

In general, September is the cheapest month to fly from Illinois to Chennai. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $810. If you’re not able to fly to Chennai in September, then April is your next best option. Flight prices from Illinois to Chennai during April average around $838.

What is the cheapest day to depart on your flight to Chennai?

The cheapest day to depart on your flight to Chennai is on a Friday when prices can be found for as low as $989. This is often the case because there is less demand to fly during this day of the week. Flights from Illinois to Chennai on a Thursday will generally be more expensive and average around $1,385. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Chennai?

In the morning is the cheapest time of day to fly from Illinois to Chennai when you can find flight prices for as low as $973. Flying to Chennai in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Chennai is in the evening when prices are around $1,343.

What is the cheapest Illinois to Chennai flight route?

Fly from Chicago O'Hare Intl to Chennai for the best Illinois - Chennai flight prices

How far in advance should I book a flight to Chennai?

You are more likely to see cheaper flights to Chennai from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Chennai for around $1,067 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chennai from Illinois for as low as $906 on momondo.

What cabin class options are available on Illinois to Chennai flights?

There are 1 cabin classes available to choose from on Illinois to Chennai flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Chennai flights?

You could potentially save up to 44% on your flight if you consider stops on a Illinois to Chennai flight.

Cheap Illinois to Chennai flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Chennai

Best Price Found

$324

Fastest flight time

19h 45m

Direct flights

None

Airports in Chennai

1 airport
The best one-way flight to Chennai from Illinois in the past 72 hours is $324. The best round-trip flight deal from Illinois to Chennai found on momondo in the last 72 hours is $664.
The fastest flight from Illinois to Chennai takes 19h 45m
There are no direct flights from Illinois to Chennai. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Chennai Airport, Chicago Midway Airport - Chennai Airport and Lambert-St Louis Airport - Chennai Airport.
There is 1 airport near Chennai: Chennai (MAA)
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  • When did momondo last update prices for flights from Illinois to Chennai Airport?

    Prices for flights from Illinois to Chennai Airport are updated daily.

  • How many operators does momondo search for flights from Illinois to Chennai Airport?

  • How old do you have to be to fly from Illinois to Chennai Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Chennai Airport.

  • What documentation or ID do you need to fly to Chennai Airport?

    The required travel and health documents for your Chennai Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chennai Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to Chennai?

Best airlines flying from Illinois to Chennai

Compare and see reviews for airlines that fly from Illinois to Chennai with momondo
Airline
Rating
Free Cancellation
Price
Cathay PacificPriceFrom $646Free CancellationRating
7.6
960 reviews
Search Cathay Pacific flights
Air IndiaPriceFrom $696Free CancellationRating
5.5
2,930 reviews
Search Air India flights
EmiratesPriceFrom $727Free CancellationRating
8.1
3,309 reviews
Search Emirates flights
Etihad AirwaysPriceFrom $764Free CancellationRating
7.4
1,232 reviews
Search Etihad Airways flights
Qatar AirwaysPriceFrom $810Free CancellationRating
7.4
3,606 reviews
Search Qatar Airways flights
LufthansaPriceFrom $832Free CancellationRating
6.8
7,301 reviews
Search Lufthansa flights
British AirwaysPriceFrom $1,011Free CancellationRating
6.6
7,261 reviews
Search British Airways flights
Oman AirPriceFrom $1,019Free CancellationRating
8.3
93 reviews
Search Oman Air flights
IndiGoPriceFrom $1,031Free CancellationRating
6.8
479 reviews
Search IndiGo flights
Ethiopian AirPriceFrom $1,069Free CancellationRating
7.2
816 reviews
Search Ethiopian Air flights

Traveling to a place near Chennai?

Book flights to Chennai if you plan to visit one of these locations
Mahabalipuram
Vellore

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Chennai?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chennai from Illinois.

Can I find flights from Illinois to Chennai with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Chennai flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Chennai?

Once all potential Illinois to Chennai flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Chennai right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chennai from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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