How long is the flight from Tamil Nadu to Illinois?

The flight from Tamil Nadu to Illinois depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Chennai (a popular airport in Tamil Nadu) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 21h 25m on average. If you fly from Coimbatore (another popular airport in Tamil Nadu) to Chicago O'Hare Intl Airport, then the average flight time is 26h 35m.

Which airlines fly to Illinois?

Etihad Airways, Emirates and British Airways are the top three most popular airlines that fly to Illinois from Tamil Nadu according to our data. Etihad Airways is the first choice among our users, with 33% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Tamil Nadu to Illinois?

Air India, Etihad Airways, and IndiGo are the most popular carriers operating from Tamil Nadu to Illinois

When did momondo last update prices for flights from Tamil Nadu to Illinois?

Prices for flights from Tamil Nadu to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Tamil Nadu to Illinois?

The number of operators available for flights from Tamil Nadu to Illinois is 6 as of November 2025.

How old do you have to be to fly from Tamil Nadu to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Tamil Nadu to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

₹ 32,192 Cheap Flights from Tamil Nadu to Illinois in 2025/26

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customie your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Tamil Nadu to Illinois

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

03:55 - 07:35MAA-ORD

39h 10m1 stop

13:30 - 22:40ORD-MAA

21h 40m1 stop

₹ 67,399Multiple Airlines

Find Deal

Tue, 2 Dec - Wed, 4 Feb

03:55 - 07:35MAA-ORD

39h 10m1 stop

14:35 - 00:35ORD-MAA

22h 30m1 stop

₹ 68,729Multiple Airlines

Find Deal

Wed, 10 Dec - Thu, 12 Feb

21:40 - 11:30MAA-ORD

25h 20m2 stops

14:35 - 00:35ORD-MAA

22h 30m1 stop

₹ 69,527Multiple Airlines

Find Deal

Tue, 2 Dec - Wed, 4 Feb

21:40 - 07:35MAA-ORD

21h 25m1 stop

14:35 - 00:35ORD-MAA

22h 30m1 stop

₹ 70,237Multiple Airlines

Find Deal

Thu, 4 Dec - Mon, 2 Feb

21:40 - 07:35MAA-ORD

21h 25m1 stop

13:10 - 19:55ORD-MAA

19h 15m1 stop

₹ 72,809Etihad Airways

Find Deal

Wed, 3 Dec - Sun, 1 Feb

03:55 - 07:35MAA-ORD

39h 10m1 stop

13:10 - 02:30ORD-MAA

25h 50m1 stop

₹ 74,405Etihad Airways

Find Deal

Wed, 24 Dec - Wed, 7 Jan

07:35 - 13:50MAA-ORD

41h 45m1 stop

11:38 - 05:35ORD-MAA

30h 27m2 stops

₹ 79,194British Airways

Find Deal

Thu, 11 Dec - Tue, 10 Feb

07:35 - 15:25MAA-ORD

43h 20m1 stop

11:36 - 03:30ORD-MAA

29h 24m2 stops

₹ 79,460British Airways

Find Deal

Sun, 23 Nov - Wed, 13 May

04:00 - 21:03MAA-STL

27h 33m2 stops

17:18 - 08:05STL-MAA

28h 17m2 stops

₹ 124,599Emirates

Find Deal

Wed, 15 Apr - Wed, 15 Jul

04:05 - 23:21MAA-STL

30h 46m2 stops

09:44 - 02:50STL-MAA

30h 36m2 stops

₹ 133,468Qatar Airways

Find Deal

Mon, 2 Mar - Wed, 3 Jun

IndiGo flights from Tamil Nadu to Illinois

Our best IndiGo deals on Tamil Nadu to Illinois flight tickets

IndiGo

17 Nov

MAA00:15Chennai

29h 40m

2 stops

ORD18:25Chicago O'Hare Intl

16 Jan

ORD20:20Chicago O'Hare Intl

26h 30m

2 stops

MAA10:20Chennai

₹ 74,227

Find similar

IndiGo

24 Dec

CJB21:05Coimbatore Peelamedu

32h 50m

2 stops

ORD18:25Chicago O'Hare Intl

31 Dec

ORD20:20Chicago O'Hare Intl

36h 45m

2 stops

CJB20:35Coimbatore Peelamedu

₹ 102,340

Find similar

Lufthansa flights from Tamil Nadu to Illinois

Our best Lufthansa deals on Tamil Nadu to Illinois flight tickets

Lufthansa

9 Dec

MAA01:50Chennai

22h 50m

1 stop

ORD13:10Chicago O'Hare Intl

9 Jan

ORD21:09Chicago O'Hare Intl

39h 26m

2 stops

MAA00:05Chennai

₹ 77,243

Find similar

Lufthansa

23 Dec

MAA01:50Chennai

29h 45m

1 stop

ORD20:05Chicago O'Hare Intl

31 Dec

ORD15:20Chicago O'Hare Intl

21h 15m

1 stop

MAA00:05Chennai

₹ 78,041

Find similar

Lufthansa

31 Mar

MAA01:55Chennai

22h 05m

1 stop

STL13:30Lambert-St Louis

1 Jul

STL08:25Lambert-St Louis

29h 15m

2 stops

MAA00:10Chennai

₹ 136,926

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Tue 2/12

03:55-07:35

1 stop39h 10m

Chicago O'Hare Intl

Wed 4/2

13:30-22:40

1 stop21h 40m

₹ 67,399

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Wed 10/12

03:55-07:35

1 stop39h 10m

Chicago O'Hare Intl

Thu 12/2

14:35-00:35

1 stop22h 30m

₹ 68,729

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Tue 2/12

21:40-11:30

2 stops25h 20m

Chicago O'Hare Intl

Wed 4/2

14:35-00:35

1 stop22h 30m

₹ 69,527

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Thu 4/12

21:40-07:35

1 stop21h 25m

Chicago O'Hare Intl

Mon 2/2

14:35-00:35

1 stop22h 30m

₹ 70,237

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Wed 3/12

21:40-07:35

1 stop21h 25m

Chicago O'Hare Intl

Sun 1/2

13:10-19:55

1 stop19h 15m

₹ 72,809

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Wed 24/12

03:55-07:35

1 stop39h 10m

Chicago O'Hare Intl

Wed 7/1

13:10-02:30

1 stop25h 50m

₹ 74,405

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Thu 11/12

07:35-13:50

1 stop41h 45m

Chicago O'Hare Intl

Tue 10/2

11:38-05:35

2 stops30h 27m

₹ 79,194

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 23/11

07:35-15:25

1 stop43h 20m

Chicago O'Hare Intl

Wed 13/5

11:36-03:30

2 stops29h 24m

₹ 79,460

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Wed 15/4

04:00-21:03

2 stops27h 33m

Lambert-St Louis

Wed 15/7

17:18-08:05

2 stops28h 17m

₹ 124,599

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Mon 2/3

04:05-23:21

2 stops30h 46m

Lambert-St Louis

Wed 3/6

09:44-02:50

2 stops30h 36m

₹ 133,468

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Tamil Nadu to Illinois

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

In general, October is the cheapest month to fly from Tamil Nadu to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 78,130. If you aren’t able to travel during the month of October, then book flights to Illinois from Tamil Nadu during November instead. Flights to Illinois in November, while not as cheap as those in October, still average around ₹ 89,215.

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

On average, the least expensive day to fly to Illinois from Tamil Nadu is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as ₹ 98,426. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Tamil Nadu to Illinois on a Thursday will generally be more expensive and average around ₹ 115,159. 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 Illinois?

According to our data, the cheapest time of day to fly to Illinois is in the afternoon. momondo users have found flights departing from Tamil Nadu to Illinois in the afternoon for as low as ₹ 104,456. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Illinois is in the morning when prices are around ₹ 110,174.

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

You are more likely to see cheaper flights to Illinois from Tamil Nadu when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around ₹ 100,440 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Tamil Nadu for as low as ₹ 78,307 on momondo.

Can stopping save me money on Tamil Nadu to Illinois flights?

You could potentially save up to 27% on your flight if you consider stops on a Tamil Nadu to Illinois flight.

Cheap Tamil Nadu to Illinois flight deals and tips

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

Direct flights	None

There are no direct flights from Tamil Nadu to Illinois. There are no popular flight routes from Tamil Nadu to Illinois.

Search flight deals

When did momondo last update prices for flights from Tamil Nadu to Illinois?
Prices for flights from Tamil Nadu to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Tamil Nadu to Illinois?
The number of operators available for flights from Tamil Nadu to Illinois is 6 as of November 2025.
How old do you have to be to fly from Tamil Nadu to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Tamil Nadu to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Tamil Nadu to Illinois

Compare and see reviews for airlines that fly from Tamil Nadu to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Air India	PriceFrom ₹ 71,220	Free Cancellation	Rating 5.5 2,940 reviews	Search Air India flights
Etihad Airways	PriceFrom ₹ 74,061	Free Cancellation	Rating 7.4 1,289 reviews	Search Etihad Airways flights
Lufthansa	PriceFrom ₹ 79,940	Free Cancellation	Rating 6.8 7,565 reviews	Search Lufthansa flights
Qatar Airways	PriceFrom ₹ 80,561	Free Cancellation	Rating 7.4 3,660 reviews	Search Qatar Airways flights
British Airways	PriceFrom ₹ 80,893	Free Cancellation	Rating 6.7 7,511 reviews	Search British Airways flights
Emirates	PriceFrom ₹ 92,389	Free Cancellation	Rating 8.1 3,405 reviews	Search Emirates flights

Why use momondo?

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

It is quick and easy to find Tamil Nadu to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

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

momondo does allow users to show only those flights to Illinois from Tamil Nadu which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Tamil Nadu to Illinois?

Once all potential Tamil Nadu to Illinois 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 Tamil Nadu to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Tamil Nadu to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.