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Cheap flights from Illinois to Chennai from $437

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 9/27. 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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0 bags

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Find the cheapest flights from Illinois to Chennai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
2:00 pm - 8:10 pm
ORD
-
MAA
19h 40m
1 stop
Etihad Airways Logo
4:05 pm - 8:35 am
MAA
-
ORD
27h 00m
1 stop
$891Etihad Airways
Mon, Sep 7 - Mon, Sep 21
Etihad Airways Logo
2:00 pm - 2:25 am
ORD
-
MAA
25h 55m
1 stop
Etihad Airways Logo
9:55 pm - 3:40 pm
MAA
-
ORD
28h 15m
1 stop
$900Etihad Airways
Mon, Jul 27 - Mon, Aug 31
Etihad Airways Logo
2:00 pm - 8:10 pm
ORD
-
MAA
19h 40m
1 stop
Etihad Airways Logo
9:55 pm - 3:40 pm
MAA
-
ORD
28h 15m
1 stop
$902Etihad Airways
Tue, Sep 15 - Mon, Sep 28
Etihad Airways Logo
9:10 pm - 2:25 am
ORD
-
MAA
18h 45m
1 stop
Etihad Airways Logo
4:05 pm - 8:35 am
MAA
-
ORD
27h 00m
1 stop
$903Etihad Airways
Mon, Aug 3 - Wed, Aug 26
Etihad Airways Logo
2:00 pm - 3:05 pm
ORD
-
MAA
38h 35m
1 stop
Etihad Airways Logo
9:40 pm - 8:55 am
MAA
-
ORD
21h 45m
1 stop
$904Etihad Airways
Wed, Oct 7 - Mon, Oct 26
Emirates Logo
8:35 pm - 8:30 pm
ORD
-
MAA
37h 25m
1 stop
Emirates Logo
9:45 pm - 2:55 pm
MAA
-
ORD
28h 40m
1 stop
$918Emirates
Tue, Oct 20 - Thu, Nov 12
Multiple Airlines Logo
9:24 am - 8:10 pm
STL
-
MAA
24h 16m
2 stops
Multiple Airlines Logo
9:55 pm - 11:59 pm
MAA
-
STL
36h 34m
2 stops
$1,022Multiple Airlines
Tue, Jul 7 - Mon, Aug 31
Qatar Airways Logo
11:35 am - 2:50 am
STL
-
MAA
28h 45m
2 stops
Qatar Airways Logo
4:20 am - 11:12 pm
MAA
-
STL
29h 22m
2 stops
$1,036Qatar Airways
Thu, Sep 3 - Wed, Sep 16
Qatar Airways Logo
8:40 am - 2:30 am
STL
-
MAA
30h 20m
2 stops
Qatar Airways Logo
4:05 am - 12:32 pm
MAA
-
STL
43h 57m
2 stops
$1,068Qatar Airways
Wed, Nov 4 - Tue, Dec 29
Multiple Airlines Logo
9:39 am - 2:50 am
STL
-
MAA
30h 41m
2 stops
Multiple Airlines Logo
4:05 am - 7:21 pm
MAA
-
STL
25h 46m
2 stops
$1,098Multiple Airlines
Wed, May 27 - Thu, Jul 9

Cathay Pacific flights from Illinois to Chennai

Our best Cathay Pacific deals on Illinois to Chennai flight tickets
Cathay Pacific
Sep 2
ORD4:00 pmChicago O'Hare Intl
45h 05m
1 stop
MAA11:35 pmChennai
Sep 27
MAA12:50 amChennai
23h 35m
1 stop
ORD1:55 pmChicago O'Hare Intl
$988
Cathay Pacific
Jul 8
ORD4:00 pmChicago O'Hare Intl
45h 05m
1 stop
MAA11:35 pmChennai
Jul 29
MAA12:50 amChennai
24h 00m
1 stop
ORD2:20 pmChicago O'Hare Intl
$1,011
Cathay Pacific
May 22
STL6:35 amLambert-St Louis
30h 30m
2 stops
MAA11:35 pmChennai
Jun 8
MAA12:50 amChennai
31h 17m
2 stops
STL9:37 pmLambert-St Louis
$1,964

Lufthansa flights from Illinois to Chennai

Our best Lufthansa deals on Illinois to Chennai flight tickets
Lufthansa
Nov 4
STL3:50 pmLambert-St Louis
29h 25m
2 stops
MAA8:45 amChennai
Dec 29
MAA1:50 amChennai
23h 35m
1 stop
STL1:55 pmLambert-St Louis
$1,486
Lufthansa
Nov 4
STL3:50 pmLambert-St Louis
20h 45m
1 stop
MAA12:05 amChennai
Dec 29
MAA1:50 amChennai
23h 35m
1 stop
STL1:55 pmLambert-St Louis
$1,490
Lufthansa
Nov 4
STL3:50 pmLambert-St Louis
20h 45m
1 stop
MAA12:05 amChennai
Dec 29
MAA9:10 pmChennai
28h 15m
2 stops
STL1:55 pmLambert-St Louis
$1,531

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 May 8, 2026.
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

Cheapest round-trip

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 9/7

2:00 pm-8:10 pm

1 stop19h 40m

Chennai

Mon 9/21

4:05 pm-8:35 am

1 stop27h 00m

$891

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 7/27

2:00 pm-2:25 am

1 stop25h 55m

Chennai

Mon 8/31

9:55 pm-3:40 pm

1 stop28h 15m

$900

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 9/15

2:00 pm-8:10 pm

1 stop19h 40m

Chennai

Mon 9/28

9:55 pm-3:40 pm

1 stop28h 15m

$902
Quickest round-trip

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 8/3

9:10 pm-2:25 am

1 stop18h 45m

Chennai

Wed 8/26

4:05 pm-8:35 am

1 stop27h 00m

$903

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Wed 10/7

2:00 pm-3:05 pm

1 stop38h 35m

Chennai

Mon 10/26

9:40 pm-8:55 am

1 stop21h 45m

$904

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 10/20

8:35 pm-8:30 pm

1 stop37h 25m

Chennai

Thu 11/12

9:45 pm-2:55 pm

1 stop28h 40m

$918

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Tue 7/7

9:24 am-8:10 pm

2 stops24h 16m

Chennai

Mon 8/31

9:55 pm-11:59 pm

2 stops36h 34m

$1,022

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Thu 9/3

11:35 am-2:50 am

2 stops28h 45m

Chennai

Wed 9/16

4:20 am-11:12 pm

2 stops29h 22m

$1,036

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Wed 11/4

8:40 am-2:30 am

2 stops30h 20m

Chennai

Tue 12/29

4:05 am-12:32 pm

2 stops43h 57m

$1,068

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Wed 5/27

9:39 am-2:50 am

2 stops30h 41m

Chennai

Thu 7/9

4:05 am-7:21 pm

2 stops25h 46m

$1,098

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, January 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 $598. If you’re not able to fly to Chennai in January, then March is your next best option. Flight prices from Illinois to Chennai during March average around $611.

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 Tuesday when prices can be found for as low as $1,115. 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 Monday will generally be more expensive and average around $1,308. 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 $1,115. 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 from Illinois 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 $1,033 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 $930 on momondo.

Can stopping save me money on Illinois to Chennai flights?

You could potentially save up to 41% 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

Fastest flight time

18h 45m

Direct flights

None
The fastest flight from Illinois to Chennai takes 18h 45m
There are no direct flights from Illinois to Chennai. There are no popular flight routes from Illinois to Chennai.
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Frequently asked questions about flying from Illinois to Chennai

  • 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.

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 $611Free CancellationRating
7.6
1,319 reviews
Search Cathay Pacific flights
Air IndiaPriceFrom $686Free CancellationRating
5.5
2,957 reviews
Search Air India flights
Etihad AirwaysPriceFrom $728Free CancellationRating
7.3
1,434 reviews
Search Etihad Airways flights
Qatar AirwaysPriceFrom $803Free CancellationRating
7.4
3,728 reviews
Search Qatar Airways flights
British AirwaysPriceFrom $805Free CancellationRating
6.7
7,954 reviews
Search British Airways flights
LufthansaPriceFrom $833Free CancellationRating
6.8
7,982 reviews
Search Lufthansa flights
EmiratesPriceFrom $843Free CancellationRating
8.1
3,572 reviews
Search Emirates flights
SWISSPriceFrom $1,058Free CancellationRating
7.6
1,937 reviews
Search SWISS 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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