$503 Find Cheap Flights from Kolkata to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kolkata to Illinois departing on 9/12. 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

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 Kolkata 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 Kolkata to Illinois, as well as popular online travel agencies
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Book Cheap Kolkata 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 Kolkata 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 Kolkata to Illinois

Mon, Sep 8 - Tue, Sep 30
Etihad Airways Logo
9:30 pm - 8:45 amCCU-ORD
21h 45m1 stop
Etihad Airways Logo
1:55 pm - 8:35 pmORD-CCU
20h 10m1 stop
$915Etihad Airways
Find Deal
Tue, Sep 9 - Tue, Sep 30
 Logo
7:30 pm - 2:40 pmCCU-ORD
29h 40m2 stops
 Logo
5:10 pm - 5:30 amORD-CCU
25h 50m2 stops
Wed, Sep 3 - Thu, Nov 6
Etihad Airways Logo
4:00 am - 8:45 amCCU-ORD
39h 15m1 stop
Etihad Airways Logo
1:10 pm - 2:40 amORD-CCU
26h 00m1 stop
$939Etihad Airways
Find Deal
Tue, Sep 9 - Tue, Sep 30
KLM Logo
4:15 pm - 2:40 pmCCU-ORD
32h 55m2 stops
KLM Logo
4:15 pm - 8:25 amORD-CCU
29h 40m2 stops
$941KLM
Find Deal
Mon, Sep 8 - Tue, Sep 30
Air France Logo
6:00 pm - 3:00 pmCCU-ORD
31h 30m2 stops
Air France Logo
5:10 pm - 8:25 amORD-CCU
28h 45m2 stops
$942Air France
Find Deal
Fri, Sep 12 - Fri, Sep 19
Air India Logo
12:40 pm - 4:21 pmCCU-ORD
38h 11m2 stops
Air India Logo
12:00 pm - 7:45 pmORD-CCU
21h 15m1 stop
$1,006Air India
Find Deal
Sun, Aug 31 - Wed, Feb 25
Air India Logo
4:15 pm - 7:25 amCCU-ORD
25h 40m1 stop
Air India Logo
11:00 am - 7:45 pmORD-CCU
21h 15m1 stop
$1,034Air India
Find Deal
Mon, Sep 1 - Wed, Feb 25
KLM Logo
7:05 pm - 2:10 pmCCU-ORD
29h 35m2 stops
KLM Logo
4:25 pm - 7:10 amORD-CCU
27h 15m2 stops
$1,088KLM
Find Deal
Sun, Sep 7 - Tue, Sep 30
Qatar Airways Logo
3:50 am - 3:05 pmCCU-ORD
21h 45m1 stop
Qatar Airways Logo
7:20 pm - 2:20 amORD-CCU
20h 30m1 stop
$1,122Qatar Airways
Find Deal
Mon, Sep 1 - Tue, Feb 24
Qatar Airways Logo
3:50 am - 3:05 pmCCU-ORD
21h 45m1 stop
Qatar Airways Logo
6:50 pm - 1:55 amORD-CCU
19h 35m1 stop
$1,129Qatar Airways
Find Deal
Booking Insights

KAYAK's insights & trends for Kolkata to Illinois flights

Get data-powered insights and trends into flights from Kolkata 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 Kolkata to Illinois?

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Kolkata 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 Kolkata to Illinois is April, when tickets cost $1,033 (return) on average. On the other hand, the most expensive months are August and March, when the average cost of round-trip tickets is $2,102 and $1,807 respectively.

What’s the cheapest day of the week to fly from Kolkata to Illinois?

The average price of all round-trip flights from Kolkata to Illinois clicked on KAYAK for each day over the last 12 months.

When flying from Kolkata to Illinois, you should consider leaving on a Tuesday and avoid Saturdays if you are looking for the best rates. For your return to Kolkata, you’ll find the best rates on Fridays and the most expensive ones on Thursdays.

How far in advance should I book a flight from Kolkata 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 Kolkata 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 Kolkata to Illinois, you should book around 6 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.


Good to know

Low seasonMarch
Cheapest flight$503
Best time to beat the crowds but there is an average 31% increase in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Kolkata to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Kolkata 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 Kolkata to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Kolkata 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 Kolkata 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 Kolkata 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 Kolkata 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 Kolkata to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $1,305 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 $1,305.

Reviews of the top 3 airlines serving from Kolkata to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Kolkata 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 Kolkata 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.
7.4
Qatar AirwaysOverall score based on 3607 reviews
7.4Comfort
7.5Boarding
7.9Crew
7.4Entertainment
7.3Food
Airline reviews

First keep the airline as you promise. Reason for travelling from Orlando to Tampa is to go with Qatar Airline. We end up with American Airline. As expected the service was horrible.

4.0 OkayJeyi, Jul 2025TPA - PHL
Read more Qatar Airways reviews

First keep the airline as you promise. Reason for travelling from Orlando to Tampa is to go with Qatar Airline. We end up with American Airline. As expected the service was horrible.

Not sure how we end up with American Airlines instead of Qatar Airways. From Philadelphia to Qatar they boarded us then they asked us to unload. After 30 minutes later they board us again. The inside the plane it was burning hot and we were sweating like crazy. Crew members are absolute rude. The way they served the passengers were horrible. One of the crew members hit my knee with food cart and kept going. I was holding an ice pack for almost 2 hours. I am still with the pain.

I felt that when I was rerouted it should have been to business class.

The flight was smooth Thank God but the delays and changing gates for 3-4 times made me so tired of walking back and forth with heavy bags I thought I was going to pass out with heavy headaches but Thank God finally found the final gate and home safe. These delays happen anytime for important reasons so just be patient when you come across these situations.

Worse fight I ever take since I start flying , still have even made home , and crew abandon us half way home . No water no food and no even anyone to answer our questions

All the crew members were too slow and rude. Most of the times the registers were empty, while hundreds of customers were waiting in line, and it was impossible to get a supervisor. Despite being in line on time, I missed my freight, plus a some customers who were ahead and behind me.

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

I recently travelled with Qatar Airways from Doha to Dulles in the QSuite, and the experience was nothing short of exceptional. The QSuite truly feels like a First-Class experience, with its luxurious design, privacy, and comfort. The cabin crew, especially the lady in charge of the cabin, was remarkable—professional, attentive, and genuinely kind. The food was excellent, and the comfort of the seat was absolutely first-class, making the journey smooth and enjoyable. While the in-flight experience was outstanding, I have a few points of feedback. Firstly, the content available in the in-flight entertainment system could be expanded and upgraded to include a more diverse and updated collection. This would elevate the entertainment experience to match the premium standards of the QSuite. Secondly, regarding the Wi-Fi service: while QSuite passengers receive one hour of complimentary Wi-Fi, any additional usage requires a fee of USD 10. Considering the premium pricing of QSuite, it would be more fitting to include unlimited Wi-Fi as part of the experience, further enhancing the luxury offered to passengers. Lastly, I must highlight an issue with luggage handling. Unfortunately, my luggage did not make it through the transit, which was disappointing. While the ground crew assured me that it would be delivered to my home on the same day as it was arriving on the next flight, this promise was not fulfilled, and the delay added unnecessary inconvenience to an otherwise excellent experience. Overall, the QSuite experience was exceptional, but addressing these areas would further solidify Qatar Airways’ position as a leader in luxury air travel.

Seating is terrible, having seats so crammed is unacceptable for a 15-hour journey. I cannot stress enough how uncomfortable it is to sit in such an aircraft. Leg space is roomier in a domestic aircraft. I have not experienced this kind of crammy seating in domestic flights either in the US or other international airlines overseas.

Do not overbook flights and kick out confirmed ticketed passengers :-(

Crew Check-In – Kolkata (CCU) The crew handling check-in in Kolkata was outstanding—efficient, courteous, and highly organized. Flight Segment – CCU to Abu Dhabi (AUH) A standard flight overall. Notably, only one in-flight meal option—a vegetarian curry—was available, which seemed unsuitable for a red-eye journey. The crew offered no alternatives, which was unexpected. Flight Segment – Abu Dhabi to Rome (AUH-FCO) Comfort improved on this leg, but service quality was average, falling short of Etihad’s premium standards. Crew attention was heavily absorbed by a difficult couple in Row 15 (port side), resulting in disproportionate focus. It was concerning that a steward had to personally return to apologize, a task better suited for supervisory staff. This highlights a development opportunity for supervisors Anna and Quashim in managing guest escalation professionally.

Certainly! Here’s a more concise and refined version of your report, maintaining a polished and professional tone: --- Crew Check-In – Kolkata (CCU) The crew handling check-in in Kolkata was outstanding—efficient, courteous, and highly organized. Flight Segment – CCU to Abu Dhabi (AUH) A standard flight overall. Notably, only one in-flight meal option—a vegetarian curry—was available, which seemed unsuitable for a red-eye journey. The crew offered no alternatives, which was unexpected. Flight Segment – Abu Dhabi to Rome (AUH-FCO) Comfort improved on this leg, but service quality was average, falling short of Etihad’s premium standards. Crew attention was heavily absorbed by a difficult couple in Row 15 (port side), resulting in disproportionate focus. It was concerning that a steward had to personally return to apologize, a task better suited for supervisory staff. This highlights a development opportunity for supervisors Anna and Quashim in managing guest escalation professionally.

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.

Horrible. After paying for my seats, I was cramped, had no overhead bin space, freezing as the flight had no temperature controls, the food was awful and served cold, when asked for snacks was told to wait and then never received any. I booked this flight as a partner through American Airlines but will avoid in the future.

Took a long time for boarding. The flight was comfortable.

Flight was delayed due to slow boarding process by etihad. Update food options and movies as well.

Should have had business class line in immigration. Food quality suboptimal

Used to Etihad employees are very rude and unprofessional but now better than before over all is okay now

Bad. Flight was very uncomfortable with narrow and shallow seats, very little food and water. I will not fly etihad again.

In never flown this flight, because my flight coning from Barcelona was delayed.

Food is good, staff is good... Wi-fi quality is poor, disembarkment after landing is atrocious.

Flight crew was lovely. Bathrooms should have been cleaner. The handsets in business class for watching the entertainment are horrible. Very difficult to figure out which buttons are for what. I managed to get the flight maps on my screen but it wasn't easy. Never got anything else up.

Uneventful trip. Good flight crew. Food could have been better and a bit more of it. Cabin cleanliness was ok.

Inflight Services are poor compared to other airlines. They do not offer even water during 15 hr flight. Food is little in portion and I had food poisoning after last meal ( rajma chawal)

Boarding at Mumbai airport was terrible, the staff had no idea how to handle it. It was chaos - and led to a delay

My seats that I paid for were changed last minute and I had to sit in uncomfortable chairs

This was a bery good experience as it was a newer plane . AI older plane bussiness class is bad .

What a pathetic plane it was. Entertainment system didn’t work. USB port was broken. There was a hole on top of folding serving table. Broken restrooms in the middle of flight.

Our seat monitor did not Not work either way going to Vietnam. I had a bulkhead seat with plenty of room, but with No monitor, it was a long flight with no movies. Fun was good, staff was Excellent.

I will never ever book air india in the future. I was with my family and at delhi airport I had to go through too with horrible experience. My 12 years daughter saud that she will never come bqck to india the way people treated us. There was no line for bags drop off since we checked online and print tag at their Kiosk as per email instruction. People working at the counter were so careless and rude. They were keep talking to each other than taking care the customers. I will not recommend anyone to fly via air india. I had horrible experience. Especially, the staff at checking counters was very very rude and careless. I have feeling if air india won't change the way they doing their operations they will out of business in a few years. Air hostes were not happy . I did not see a smile on anyone in the plane. I called twice for the assistance and no one showed up. I hope you will sene this to the Hire authority. I left a video with an another employee of air india who asked me about my experiences. I hope they will make some changes ASAP. Regars, Mohinder Kumar

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