Cheap flights from Illinois to Chennai from $316
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 8/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Illinois to Chennai
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Air India flights from Illinois to Chennai
Our best Air India deals on Illinois to Chennai flight tickets
American Airlines flights from Illinois to Chennai
Our best American Airlines deals on Illinois to Chennai flight tickets
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, September 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 $802. If you’re not able to fly to Chennai in September, then April is your next best option. Flight prices from Illinois to Chennai during April average around $838.
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 $960. 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 Saturday will generally be more expensive and average around $1,268. 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 $1,052. 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 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 $915 on momondo.
What cabin class options are available on Illinois to Chennai flights?
There are 1 cabin classes available to choose from on Illinois to Chennai flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Illinois to Chennai?
Air India, American Airlines, and Turkish Airlines are the most popular carriers operating from Illinois to Chennai
What airlines fly to Chennai?
Etihad Airways, Air India and Emirates are the top three most popular airlines that fly to Chennai from Illinois according to our data. Etihad Airways is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Chennai. Keep in mind that there are 13 different airlines that fly to Chennai on a routine basis, so you have a few additional options to choose from.
Cheap Illinois to Chennai flight deals and tips
Find info about flight duration, direct flights, and airports for your flight 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?
As of June 2025, there are 13 operators available to choose from 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.
What is the most popular plane model from Illinois to Chennai?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Chennai is Boeing 777-300ER (100.00% of total bookings).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $646 | Free Cancellation | Rating 7.5 900 reviews | |||
| PriceFrom $697 | Free Cancellation | Rating 5.5 2,917 reviews | |||
| PriceFrom $727 | Free Cancellation | Rating 8.1 3,272 reviews | |||
| PriceFrom $764 | Free Cancellation | Rating 7.4 1,218 reviews | |||
| PriceFrom $809 | Free Cancellation | Rating 7.4 3,597 reviews | |||
| PriceFrom $823 | Free Cancellation | Rating 6.8 7,179 reviews | |||
| PriceFrom $1,019 | Free Cancellation | Rating 8.3 92 reviews | |||
| PriceFrom $1,031 | Free Cancellation | Rating 6.8 478 reviews | |||
| PriceFrom $1,058 | Free Cancellation | Rating 7.5 1,644 reviews | |||
| PriceFrom $1,062 | Free Cancellation | Rating 6.6 7,051 reviews |
Traveling to a place near Chennai?
Book flights to Chennai if you plan to visit one of these locationsWhy 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.