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Cheap flights from Illinois to Chennai from $441

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 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Chennai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:03 am - 8:10 pm
STL
-
MAA
27h 37m
2 stops
Multiple Airlines Logo
10:00 am - 2:53 pm
MAA
-
STL
40h 23m
2 stops
$1,022Multiple Airlines
Wed, Oct 7 - Mon, Nov 2
Etihad Airways Logo
9:35 am - 8:10 am
STL
-
MAA
36h 05m
2 stops
Etihad Airways Logo
3:55 am - 8:16 pm
MAA
-
STL
27h 51m
2 stops
$1,082Etihad Airways
Sat, Oct 24 - Wed, Nov 11
Etihad Airways Logo
8:25 pm - 8:10 pm
ORD
-
MAA
37h 15m
1 stop
Etihad Airways Logo
4:05 am - 8:35 am
MAA
-
ORD
39h 00m
1 stop
$1,123Etihad Airways
Mon, Jul 20 - Mon, Jul 27
Qatar Airways Logo
6:00 am - 2:50 am
ORD
-
MAA
34h 20m
2 stops
Qatar Airways Logo
3:55 am - 3:05 pm
MAA
-
ORD
21h 40m
1 stop
$1,124Qatar Airways
Fri, Aug 7 - Wed, Sep 2
Qatar Airways Logo
6:00 am - 2:50 am
ORD
-
MAA
34h 20m
2 stops
Qatar Airways Logo
3:25 am - 2:30 pm
MAA
-
ORD
22h 35m
1 stop
$1,125Qatar Airways
Fri, Oct 9 - Sun, Nov 8
Qatar Airways Logo
6:00 am - 2:30 am
ORD
-
MAA
33h 00m
2 stops
Qatar Airways Logo
4:05 am - 2:30 pm
MAA
-
ORD
21h 55m
1 stop
$1,126Qatar Airways
Tue, Dec 1 - Thu, Jan 21
Etihad Airways Logo
8:25 pm - 8:25 am
ORD
-
MAA
25h 30m
1 stop
Etihad Airways Logo
4:05 pm - 8:35 am
MAA
-
ORD
27h 00m
1 stop
$1,127Etihad Airways
Sat, Aug 1 - Thu, Aug 6
Multiple Airlines Logo
9:31 am - 2:30 am
ORD
-
MAA
29h 29m
2 stops
Multiple Airlines Logo
4:05 am - 2:30 pm
MAA
-
ORD
21h 55m
1 stop
$1,129Multiple Airlines
Wed, Nov 11 - Thu, Nov 26
Etihad Airways Logo
1:10 pm - 7:55 pm
ORD
-
MAA
19h 15m
1 stop
Etihad Airways Logo
9:40 pm - 7:55 am
MAA
-
ORD
21h 45m
1 stop
$1,130Etihad Airways
Tue, Nov 10 - Sat, Dec 12
Multiple Airlines Logo
9:31 am - 2:30 am
ORD
-
MAA
29h 29m
2 stops
Multiple Airlines Logo
3:25 am - 11:59 pm
MAA
-
ORD
32h 04m
2 stops
$1,131Multiple Airlines
Wed, Nov 11 - Fri, Nov 27

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Lufthansa flights from Illinois to Chennai

Our best Lufthansa deals on Illinois to Chennai flight tickets
Lufthansa
Oct 7
STL1:29 pmLambert-St Louis
24h 11m
2 stops
MAA12:10 amChennai
Nov 2
MAA6:00 pmChennai
38h 43m
3 stops
STL9:13 pmLambert-St Louis
$1,471
Lufthansa
Oct 7
STL1:29 pmLambert-St Louis
32h 56m
3 stops
MAA8:55 amChennai
Nov 2
MAA6:00 pmChennai
38h 43m
3 stops
STL9:13 pmLambert-St Louis
$1,485
Lufthansa
Jul 22
STL1:13 pmLambert-St Louis
33h 12m
3 stops
MAA8:55 amChennai
Jul 29
MAA6:00 pmChennai
37h 56m
3 stops
STL9:26 pmLambert-St Louis
$1,588

Etihad Airways flights from Illinois to Chennai

Our best Etihad Airways deals on Illinois to Chennai flight tickets
Etihad Airways
Oct 24
STL9:35 amLambert-St Louis
36h 05m
2 stops
MAA8:10 amChennai
Nov 11
MAA3:55 amChennai
27h 51m
2 stops
STL8:16 pmLambert-St Louis
$1,082
Etihad Airways
Jul 20
ORD8:25 pmChicago O'Hare Intl
37h 15m
1 stop
MAA8:10 pmChennai
Jul 27
MAA4:05 amChennai
39h 00m
1 stop
ORD8:35 amChicago O'Hare Intl
$1,123
Etihad Airways
Aug 1
ORD8:25 pmChicago O'Hare Intl
25h 30m
1 stop
MAA8:25 amChennai
Aug 6
MAA4:05 pmChennai
27h 00m
1 stop
ORD8:35 amChicago O'Hare Intl
$1,127

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 June 24, 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

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Wed 10/7

6:03 am-8:10 pm

2 stops27h 37m

Chennai

Mon 11/2

10:00 am-2:53 pm

2 stops40h 23m

$1,022

St. LouisChennai

STL - MAA

STLMAA

Lambert-St Louis

Sat 10/24

9:35 am-8:10 am

2 stops36h 05m

Chennai

Wed 11/11

3:55 am-8:16 pm

2 stops27h 51m

$1,082

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Mon 7/20

8:25 pm-8:10 pm

1 stop37h 15m

Chennai

Mon 7/27

4:05 am-8:35 am

1 stop39h 00m

$1,123

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 8/7

6:00 am-2:50 am

2 stops34h 20m

Chennai

Wed 9/2

3:55 am-3:05 pm

1 stop21h 40m

$1,124

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Fri 10/9

6:00 am-2:50 am

2 stops34h 20m

Chennai

Sun 11/8

3:25 am-2:30 pm

1 stop22h 35m

$1,125

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 12/1

6:00 am-2:30 am

2 stops33h 00m

Chennai

Thu 1/21

4:05 am-2:30 pm

1 stop21h 55m

$1,126

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Sat 8/1

8:25 pm-8:25 am

1 stop25h 30m

Chennai

Thu 8/6

4:05 pm-8:35 am

1 stop27h 00m

$1,127

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Wed 11/11

9:31 am-2:30 am

2 stops29h 29m

Chennai

Thu 11/26

4:05 am-2:30 pm

1 stop21h 55m

$1,129
Quickest round-trip

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Tue 11/10

1:10 pm-7:55 pm

1 stop19h 15m

Chennai

Sat 12/12

9:40 pm-7:55 am

1 stop21h 45m

$1,130

ChicagoChennai

ORD - MAA

ORDMAA

Chicago O'Hare Intl

Wed 11/11

9:31 am-2:30 am

2 stops29h 29m

Chennai

Fri 11/27

3:25 am-11:59 pm

2 stops32h 04m

$1,131

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, April 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 $582. If you’re not able to fly to Chennai in April, then January is your next best option. Flight prices from Illinois to Chennai during January average around $598.

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.

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 $1,067 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 $940 on momondo.

Can stopping save me money on Illinois to Chennai flights?

You could potentially save up to 19% 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

19h 10m

Direct flights

None
The fastest flight from Illinois to Chennai takes 19h 10m
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
1,388 reviews
Search Cathay Pacific flights
Air IndiaPriceFrom $669Free CancellationRating
5.5
2,958 reviews
Search Air India flights
Etihad AirwaysPriceFrom $728Free CancellationRating
7.3
1,461 reviews
Search Etihad Airways flights
SWISSPriceFrom $776Free CancellationRating
7.5
1,971 reviews
Search SWISS flights
Qatar AirwaysPriceFrom $804Free CancellationRating
7.3
3,730 reviews
Search Qatar Airways flights
British AirwaysPriceFrom $828Free CancellationRating
6.7
8,068 reviews
Search British Airways flights
LufthansaPriceFrom $833Free CancellationRating
6.8
8,092 reviews
Search Lufthansa flights
EmiratesPriceFrom $860Free CancellationRating
8.1
3,595 reviews
Search Emirates 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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