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

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.

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.

₹ 32,304 Cheap Flights from Tamil Nadu to Illinois in 2025/26

1 adult

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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.

22:30 - 15:10MAA-ORD

28h 10m2 stops

17:20 - 07:50ORD-MAA

27h 00m2 stops

₹ 70,465Air France

Find Deal

Tue, 18 Nov - Fri, 16 Jan

09:50 - 11:30MAA-ORD

37h 10m1 stop

14:30 - 22:40ORD-MAA

21h 40m1 stop

₹ 71,441Air India

Find Deal

Sun, 8 Feb - Wed, 18 Mar

03:55 - 07:35MAA-ORD

39h 10m1 stop

14:10 - 08:10ORD-MAA

31h 30m1 stop

₹ 73,127Etihad Airways

Find Deal

Sat, 7 Feb - Wed, 18 Mar

10:00 - 07:35MAA-ORD

33h 05m1 stop

14:00 - 02:25ORD-MAA

25h 55m1 stop

₹ 75,257Etihad Airways

Find Deal

Wed, 11 Feb - Wed, 13 May

07:35 - 18:45MAA-ORD

22h 40m1 stop

21:15 - 03:30ORD-MAA

19h 45m1 stop

₹ 77,476British Airways

Find Deal

Wed, 11 Feb - Sat, 16 May

07:35 - 18:45MAA-ORD

22h 40m1 stop

19:05 - 03:30ORD-MAA

21h 55m1 stop

₹ 77,564British Airways

Find Deal

Thu, 12 Feb - Thu, 14 May

03:50 - 19:39MAA-STL

27h 19m2 stops

15:11 - 08:15STL-MAA

29h 34m2 stops

₹ 120,340Emirates

Find Deal

Sat, 22 Nov - Tue, 20 Jan

04:05 - 22:58MAA-STL

30h 23m2 stops

15:20 - 02:30STL-MAA

23h 40m2 stops

₹ 120,961Qatar Airways

Find Deal

Mon, 17 Nov - Tue, 20 Jan

09:45 - 19:39MAA-STL

45h 24m2 stops

15:11 - 02:15STL-MAA

23h 34m2 stops

₹ 121,228Emirates

Find Deal

Sun, 23 Nov - Tue, 20 Jan

03:25 - 22:58MAA-STL

31h 03m2 stops

12:01 - 02:20STL-MAA

26h 49m2 stops

₹ 123,713Qatar Airways

Find Deal

Mon, 17 Nov - Sun, 18 Jan

British Airways flights from Tamil Nadu to Illinois

Our best British Airways deals on Tamil Nadu to Illinois flight tickets

British Airways

11 Feb

MAA07:35Chennai

22h 40m

1 stop

ORD18:45Chicago O'Hare Intl

16 May

ORD21:15Chicago O'Hare Intl

19h 45m

1 stop

MAA03:30Chennai

₹ 77,476

Find similar

British Airways

12 Feb

MAA07:35Chennai

22h 40m

1 stop

ORD18:45Chicago O'Hare Intl

14 May

ORD19:05Chicago O'Hare Intl

21h 55m

1 stop

MAA03:30Chennai

₹ 77,564

Find similar

British Airways

23 Nov

MAA07:35Chennai

43h 20m

1 stop

ORD15:25Chicago O'Hare Intl

13 May

ORD17:10Chicago O'Hare Intl

23h 50m

2 stops

MAA03:30Chennai

₹ 79,606

Find similar

Etihad Airways flights from Tamil Nadu to Illinois

Our best Etihad Airways deals on Tamil Nadu to Illinois flight tickets

Etihad Airways

7 Feb

MAA03:55Chennai

39h 10m

1 stop

ORD07:35Chicago O'Hare Intl

18 Mar

ORD14:10Chicago O'Hare Intl

31h 30m

1 stop

MAA08:10Chennai

₹ 73,127

Find similar

Etihad Airways

11 Feb

MAA10:00Chennai

33h 05m

1 stop

ORD07:35Chicago O'Hare Intl

13 May

ORD14:00Chicago O'Hare Intl

25h 55m

1 stop

MAA02:25Chennai

₹ 75,257

Find similar

Etihad Airways

14 Feb

MAA16:10Chennai

26h 55m

1 stop

ORD07:35Chicago O'Hare Intl

13 May

ORD14:00Chicago O'Hare Intl

32h 00m

1 stop

MAA08:30Chennai

₹ 75,790

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Tue 18/11

22:30-15:10

2 stops28h 10m

Chicago O'Hare Intl

Fri 16/1

17:20-07:50

2 stops27h 00m

₹ 70,465

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sun 8/2

09:50-11:30

1 stop37h 10m

Chicago O'Hare Intl

Wed 18/3

14:30-22:40

1 stop21h 40m

₹ 71,441

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Sat 7/2

03:55-07:35

1 stop39h 10m

Chicago O'Hare Intl

Wed 18/3

14:10-08:10

1 stop31h 30m

₹ 73,127

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Wed 11/2

10:00-07:35

1 stop33h 05m

Chicago O'Hare Intl

Wed 13/5

14:00-02:25

1 stop25h 55m

₹ 75,257

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Wed 11/2

07:35-18:45

1 stop22h 40m

Chicago O'Hare Intl

Sat 16/5

21:15-03:30

1 stop19h 45m

₹ 77,476

ChennaiChicago

MAA - ORD

MAAORD

Chennai

Thu 12/2

07:35-18:45

1 stop22h 40m

Chicago O'Hare Intl

Thu 14/5

19:05-03:30

1 stop21h 55m

₹ 77,564

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Sat 22/11

03:50-19:39

2 stops27h 19m

Lambert-St Louis

Tue 20/1

15:11-08:15

2 stops29h 34m

₹ 120,340

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Mon 17/11

04:05-22:58

2 stops30h 23m

Lambert-St Louis

Tue 20/1

15:20-02:30

2 stops23h 40m

₹ 120,961

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Sun 23/11

09:45-19:39

2 stops45h 24m

Lambert-St Louis

Tue 20/1

15:11-02:15

2 stops23h 34m

₹ 121,228

ChennaiSt. Louis

MAA - STL

MAASTL

Chennai

Mon 17/11

03:25-22:58

2 stops31h 03m

Lambert-St Louis

Sun 18/1

12:01-02:20

2 stops26h 49m

₹ 123,713

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 ₹ 78,718. 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 ₹ 86,528.

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 ₹ 98,497. 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 ₹ 115,242. 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 ₹ 104,531. 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 ₹ 110,253.

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 ₹ 100,328 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 ₹ 80,937 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 ₹ 71,271	Free Cancellation	Rating 5.5 2,941 reviews	Search Air India flights
Etihad Airways	PriceFrom ₹ 74,114	Free Cancellation	Rating 7.4 1,285 reviews	Search Etihad Airways flights
Lufthansa	PriceFrom ₹ 79,997	Free Cancellation	Rating 6.8 7,547 reviews	Search Lufthansa flights
Qatar Airways	PriceFrom ₹ 80,619	Free Cancellation	Rating 7.4 3,660 reviews	Search Qatar Airways flights
British Airways	PriceFrom ₹ 80,951	Free Cancellation	Rating 6.7 7,494 reviews	Search British Airways flights
Emirates	PriceFrom ₹ 92,455	Free Cancellation	Rating 8.1 3,401 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.