$602 Find Cheap Flights from Chennai to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chennai to Illinois departing on 7/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chennai to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chennai to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Chennai to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chennai to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chennai to Illinois

Sat, Sep 26 - Sun, Jan 10
Etihad Airways Logo
10:15 am - 3:40 pm
MAA
-
ORD
39h 55m
1 stop
Etihad Airways Logo
8:20 pm - 8:10 am
ORD
-
MAA
24h 20m
1 stop
$953Etihad Airways
Sat, Oct 3 - Thu, Jan 14
Etihad Airways Logo
9:55 pm - 3:40 pm
MAA
-
ORD
28h 15m
1 stop
Etihad Airways Logo
8:20 pm - 8:10 am
ORD
-
MAA
24h 20m
1 stop
$960Etihad Airways
Fri, Aug 28 - Mon, Sep 14
Etihad Airways Logo
4:05 pm - 3:40 pm
MAA
-
ORD
34h 05m
1 stop
Etihad Airways Logo
2:00 pm - 8:10 pm
ORD
-
MAA
19h 40m
1 stop
$962Etihad Airways
Tue, Jul 14 - Sat, Jan 9
Etihad Airways Logo
10:15 am - 8:35 am
MAA
-
ORD
32h 50m
1 stop
Etihad Airways Logo
1:10 pm - 2:30 am
ORD
-
MAA
25h 50m
1 stop
$970Etihad Airways
Wed, Jul 29 - Fri, Aug 28
Etihad Airways Logo
9:55 pm - 3:40 pm
MAA
-
ORD
28h 15m
1 stop
Etihad Airways Logo
2:00 pm - 8:25 am
ORD
-
MAA
31h 55m
1 stop
$972Etihad Airways
Tue, Jul 7 - Wed, Dec 23
Multiple Airlines Logo
9:55 pm - 4:29 pm
MAA
-
STL
29h 04m
2 stops
Multiple Airlines Logo
9:08 am - 2:30 am
STL
-
MAA
29h 52m
2 stops
$1,621Multiple Airlines
Tue, Jul 7 - Wed, Dec 23
Lufthansa Logo
9:05 pm - 1:25 pm
MAA
-
STL
26h 50m
2 stops
Lufthansa Logo
7:04 pm - 8:45 am
STL
-
MAA
50h 11m
3 stops
$1,904Lufthansa
Tue, Jul 7 - Wed, Dec 23
Lufthansa Logo
6:00 pm - 1:25 pm
MAA
-
STL
29h 55m
2 stops
Lufthansa Logo
3:40 pm - 12:05 am
STL
-
MAA
20h 55m
1 stop
$2,028Lufthansa
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
8:10 pm - 6:25 pm
MAA
-
MDW
32h 45m
3 stops
Multiple Airlines Logo
9:19 am - 12:10 am
MDW
-
MAA
28h 21m
3 stops
$2,469Multiple Airlines
Tue, Sep 15 - Thu, Nov 19
Qatar Airways Logo
4:05 am - 8:44 pm
MAA
-
STL
27h 09m
2 stops
Qatar Airways Logo
1:20 pm - 2:30 am
STL
-
MAA
25h 40m
2 stops
$5,708Qatar Airways
Booking Insights

KAYAK's insights & trends for Chennai to Illinois flights

Get data-powered insights and trends into flights from Chennai to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Chennai to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chennai to Illinois departing in September.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Chennai to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $1,183 on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is $1,183.

What is the cheapest month to fly from Chennai to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chennai to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chennai to Illinois is April, when tickets cost $408 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $985 and $842 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chennai to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chennai to Illinois, you should book around 5 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$602
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Chennai to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Chennai to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chennai to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chennai to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chennai to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chennai to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Chennai to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chennai to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Chennai to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Chennai to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Chennai to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chennai to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
EmiratesOverall score based on 3600 reviews
8.1Boarding
8.4Crew
7.9Food
8.0Comfort
8.2Entertainment
Airline reviews

I love to travel again and again in Emirates. Keep up the good work.

10.0 ExcellentAnonymous, Apr 2026
MSP - ORD
Read more Emirates reviews

I love to travel again and again in Emirates. Keep up the good work.

I liked the newer aircraft CRJ-550 since it had WIFI and the seats are more spacious.

Flight was on time. Seats (economy) were very comfortable and food was excellent. The bad thing was that after landing it took an hour to reach arrivals. We had to wait 15mins to get off the plane and then had to board a bus which moved very slowly and took almost 30 minutes.

Some Crew were distinguishably fake in their interactions with passengers.

The flight experience was good, but connection time was cut shorted because of delayed start.. it would have been helpful if the flight showed which gate/terminal we need to go for connecting flight and flight timing was less than 30 minutes to connect which made ourselves stressful to catch next flight 😔

Better entertainment; the lack of it made the very long flight even longer

It was economy plus. That is all. I literally felt like traveling in economy class with a little extra leg room. Poor food. V restricted options. Worst of all POOR CREW ATTITUDE.

On the Dubai-Gatwick flight the only meal options were Beef or Chicken. No vegetarian option. This was a surprise. I would usually order in advance but did not this time. Would have been good to know that a vegetarian meal is not available as a standard meal. Thankfully it was just me travelling, but if I’d had my kids with me that would have been a big problem for us.

Newly reconfigured 380 I assume. Has a new ife with usb c ports and Bluetooth connections

Overall emirates continues to amaze me with their. Awesome service . I had shifted away from emirates , because I lost luggage and watch in emirates in 2019 that drifted me away from this airline , but I am willing to give it try

Seats very small and unable to pre purchase internet or seat upgrades

It was good no problems made it on time for the next flight overseas!

Boarding process was terrible. Will not travel Qatar Airways if I had an alternative. The food was one of the worst, even for airline food.

If you want to make money pls charge it in the ticket, Chennai check in crew simply forcing travelers make payment for unnecessary. Second, Chennai crew not even listening travelers request. Poor service and not sure you will improve with my feedback.

The qatar airways flights were great, the code share with Indigo could have been a lot better. There is no option for web check in, there is not information on the tickets for the INDIGO PNR this caused a problem with security letting us into the airport. The indigo staff did not even want us to line up before they opened the counters. There is not option on the indigo flgith to request special meals.

some sections of airport are too cramped. The screening of luggage was twice and a huge hassle. They kept saying my boarding the for my next flight was in 10 minutes but were dragging the screening too long. having a 2 hour connecting time with this much delays in screenings is not good. They could see I was traveling with special needs kid yet I was" randomly chosen" to be personally screened again.

Boarding was orderly, staff at the counter were friendly and so as most of the staff in the flight. Room for some improvement in entertainment, but overall very good flight.

I was not able to check in online before the travel. It showed some error. I remember I could not do this during my onward journey. I called Qatar and they said there was a glitch.

Sitting arrangement is very poor and for entertainment options for Bollywood fans , need to add more movies and Hindi TV shows . Bcz mostly Indian people are spend more money to fly with Qatar so for their better entertainments please add more good TV shows . Thank you

Its a long flight. Please provide free wifi as soon as long ts not interfering with aircraft data.

Limit the number of usage of wine or please arrange our seats. The passenger was drunk on this flight and not on Thiruvananthapuram to Abudhabi.

The seats seemed smaller than other business class offerings. The entertainment menu was limited. Flight crew was good.

It was excellent service in the snow storm gives us hotel and transportation. It will be more better if u can add one more meal because it’s a long flight boring journey. If you give extra meal time passes faster and can enjoy the trip better

Good flight. There were a few issues with the flat bed. It was some technical issues. Otherwise everything was good

On this flight...fine. The one from India to Abu Dahbi, awful.

Horrible. After paying for seats, I was cramped, my daughters legs kept hitting the seat in front, I had no overhead bin space and no help from stewards on board, the food was served cold, when asked for snacks was told to wait and never received any, the flight was cold with no temperature controls. Entertainment was outdated. I booked this through partnership with American Airlines but will avoid in the future.

Etihad can improve the transfer in Abudabi gates instead of making people to climb the stairs.

Etihad checkin boarding and insight experience is one of a kind that i have never experienced in other fights. The flight crew was very kind and helpful when i traveled with my broken leg. Overall i rate the highest

Nothing was good. Everything needs to improve. Everything was abysmal. Needs lots of improvement. The check-in and baggage drop at the New Delhi airport was manned by disrespectful people, horrible experience. We will never travel by Etihad ever again.

The seat was not functional. Very uncomfortable to sit upright for that many hours😢. There was no legroom. Can’t move the legs or the body. We should have the option to pick our seats. There was no need to call customer support team and have them pick and we pay for the premium seats. When I called the CST regarding the seats, their response is gaslighting. Total disappointment. We have paid to be tortured by Etihad Airlines.

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Everything could have been better. What needed to be wrong with United went wrong

It was good. The seats in economy weren’t bad

Very good. Comfortable and I felt well taken care of from start to finish

Flight was cancelled due to maintenance issues. It was a nightmare to get an alternate flight back home.

Not enough veg food for passengers. I actually did not get veg food and starved the entire flight duration.

Very good experience. All of the details made this experience very positive.

Food options in Economy class can be improved. The headphones on the entertainment system only have a single earphone active, this can be improved.

Entertainment system have to be updated. Allied partners charging money for alcohol - in fact international flight.

Crew was polite. Ground crew was prompt in informing about the flight delay. Boarding process was ok. There was no entertainment on the flight. Blankets were not available for an overnight flight. It was very cold & blanket was given upon request. Food was average. It would have been better to serve breakfast instead of a late night dinner as people like to sleep & serving breakfast before disembarking in the morning at Singapore would have been much appreciated. Seats were ok. Plane was old.

tray table was inclined by 30 degress so could not use it

Flight was delayed in phases from 84ppm to 2am. And at 2am it was cancelled. Only refund option provided and no stay was provided. Poor communication throughout and shameless behaviour from the airline with no regard for seniors citizens and those travelling with children.

Boarding was through bus even though aerobridges were empty. Major mess

Extremely bad experience compared to Vistara. No priority in check in, no priority for boarding. No upgrade. Seat selection is paid. Curtains were dirty. Demo bag was dirty. Warmth of the crew was missing.

It was far better than what others had led me to expect. I would fly with them again. Don't expect all features of the entertainment system to work.

Bags got damaged for multiple passengers, and they wouldn't even reimburse the depreciated price of the bag.

Communication was terrible. Flight was delayed for 4-5 hours in DC (on the front end, and also after we boarded, we had to get off - some issue with fueling the old plane correctly). There was little to no information on timing or what was happening. Once we reach Delhi airspace, apparently there was weather that caused us not to land - we were actually near the ground, saw the run way, and lifted back up to the sky after being sooo close. Then we circled for about 30 minutes, and they decided to go to Jaipur to land until the weather cleared and to refuel. Again, once we landed in Jaipur (wrong city), there was little to no information on timing or what was happening. Then we heard that the crew was reaching their 24 hours. We sat on the place, on the tarmac for another 3 HOURS, with no food and not enough water for everyone on the flight. Then, they kicked us off the plane with no plan, in the wrong city. We went thru customs, got our bags (thank goodness), and had to ask a bunch of staff what was happening and what to do. Eventually, their soltuion was to bus people back to Delhi (like 6 hours we were told) but not everyone would fit on the bus, and unknown timing on when it would leave. At this point it was 9PM (we were scheduled to arrive in Delhi at 11AM...). My husband and I decided to risk it and take a cab that we had to pay ourselves (about $200 US dollars) to get to Delhi (about 5 hour drive). We both had terrible trips back to the US as well - almost missed connecting flight, forced to pay for carry-on luggage (a small back pack!) and duty-free goods by the Air India staff last minute. Just terrible experience all around. Never again with AI! The ONLY good thing was the air hostesses were kind and patient - example: they made sure people with food allergies got their correct. However, the TV's in our entire row did not work so I'm glad we brought our own entertainment......

On time boarding, proper information, friendly and cordial approach of staff, particularly crew members and the most important timely available of checked in baggage after arrival.

Air India need a big change of in all departments.

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Information on your arrival and departure airports