What is the cheapest airline that flies from Illinois to Patna?

Air India and IndiGo are the most popular carriers operating from Illinois to Patna

When did momondo last update prices for flights from Illinois to Patna Airport?

Prices for flights from Illinois to Patna Airport refresh daily.

How many operators does momondo search for flights from Illinois to Patna Airport?

As of August 2025, there is 1 operator available to choose from for flights from Illinois to Patna Airport.

How old do you have to be to fly from Illinois to Patna Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Patna Airport.

What documentation or ID do you need to fly to Patna Airport?

The required travel and health documents for your Patna 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 Patna Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$484 Cheap Flights from Illinois to Patna in 2025

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Find the cheapest flights from Illinois to Patna

Round-trip

One-way

Cheap round-trip flights

1:10 pm - 12:40 pmORD-PAT

37h 00m1 stop

10:40 pm - 6:30 amPAT-ORD

19h 20m1 stop

$782Air India

Find Deal

Fri, Oct 17 - Sun, Nov 2

12:00 pm - 6:25 pmORD-PAT

19h 55m1 stop

6:20 pm - 6:30 amPAT-ORD

23h 40m1 stop

$817Air India

Find Deal

Sat, Nov 1 - Sat, Nov 15

12:00 pm - 10:00 pmORD-PAT

23h 30m1 stop

6:20 pm - 6:30 amPAT-ORD

23h 40m1 stop

$855Air India

Find Deal

Sat, Nov 1 - Sat, Nov 15

1:36 pm - 10:00 pmORD-PAT

45h 54m2 stops

6:20 pm - 11:10 amPAT-ORD

27h 20m2 stops

$880Air India

Find Deal

Thu, Sep 4 - Tue, Sep 16

11:00 am - 6:25 pmORD-PAT

19h 55m1 stop

4:05 pm - 6:30 amPAT-ORD

25h 55m1 stop

$899Air India

Find Deal

Fri, Jan 30 - Sun, Feb 15

1:10 pm - 12:40 pmORD-PAT

37h 00m1 stop

7:10 pm - 8:52 pmPAT-ORD

37h 12m2 stops

$921Air India

Find Deal

Fri, Oct 17 - Sun, Nov 2

12:00 pm - 10:00 amORD-PAT

35h 30m1 stop

6:20 pm - 9:48 pmPAT-ORD

38h 58m2 stops

$923Air India

Find Deal

Sat, Nov 1 - Sat, Nov 15

11:00 am - 1:20 pmORD-PAT

38h 50m3 stops

7:10 pm - 6:30 amPAT-ORD

22h 50m1 stop

$924Air India

Find Deal

Sat, Jan 31 - Sun, Feb 15

1:55 pm - 10:25 amORD-PAT

34h 00m3 stops

11:00 am - 11:10 amPAT-ORD

34h 40m3 stops

$979

Find Deal

Thu, Sep 4 - Tue, Sep 16

8:20 pm - 4:00 pmORD-PAT

32h 10m2 stops

8:20 pm - 6:25 pmPAT-ORD

33h 35m2 stops

$1,119IndiGo

Find Deal

Thu, Nov 20 - Thu, Dec 25

Air India flights from Illinois to Patna

Our best Air India deals on Illinois to Patna flight tickets

Air India

Oct 17

ORD1:10 pmChicago O'Hare Intl

37h 00m

1 stop

PAT12:40 pmPatna

Nov 2

PAT10:40 pmPatna

19h 20m

1 stop

ORD6:30 amChicago O'Hare Intl

$782

Find similar

Air India

Nov 1

ORD12:00 pmChicago O'Hare Intl

19h 55m

1 stop

PAT6:25 pmPatna

Nov 15

PAT6:20 pmPatna

23h 40m

1 stop

ORD6:30 amChicago O'Hare Intl

$817

Find similar

Air India

Nov 1

ORD12:00 pmChicago O'Hare Intl

23h 30m

1 stop

PAT10:00 pmPatna

Nov 15

PAT6:20 pmPatna

23h 40m

1 stop

ORD6:30 amChicago O'Hare Intl

$855

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Fri 10/17

1:10 pm-12:40 pm

1 stop37h 00m

Patna

Sun 11/2

10:40 pm-6:30 am

1 stop19h 20m

$782

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sat 11/1

12:00 pm-6:25 pm

1 stop19h 55m

Patna

Sat 11/15

6:20 pm-6:30 am

1 stop23h 40m

$817

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sat 11/1

12:00 pm-10:00 pm

1 stop23h 30m

Patna

Sat 11/15

6:20 pm-6:30 am

1 stop23h 40m

$855

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Thu 9/4

1:36 pm-10:00 pm

2 stops45h 54m

Patna

Tue 9/16

6:20 pm-11:10 am

2 stops27h 20m

$880

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Fri 1/30

11:00 am-6:25 pm

1 stop19h 55m

Patna

Sun 2/15

4:05 pm-6:30 am

1 stop25h 55m

$899

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Fri 10/17

1:10 pm-12:40 pm

1 stop37h 00m

Patna

Sun 11/2

7:10 pm-8:52 pm

2 stops37h 12m

$921

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sat 11/1

12:00 pm-10:00 am

1 stop35h 30m

Patna

Sat 11/15

6:20 pm-9:48 pm

2 stops38h 58m

$923

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sat 1/31

11:00 am-1:20 pm

3 stops38h 50m

Patna

Sun 2/15

7:10 pm-6:30 am

1 stop22h 50m

$924

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Thu 9/4

1:55 pm-10:25 am

3 stops34h 00m

Patna

Tue 9/16

11:00 am-11:10 am

3 stops34h 40m

$979

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Thu 11/20

8:20 pm-4:00 pm

2 stops32h 10m

Patna

Thu 12/25

8:20 pm-6:25 pm

2 stops33h 35m

$1,119

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Patna

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

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

Our data shows that Saturday is the least expensive day to fly to Patna. Tickets to fly out on this day can be as low as $1,178. The most expensive day to fly to Patna is Tuesday, with ticket prices averaging around $1,749.

What is the cheapest time of day to depart on your flight to Patna?

Our most recent data shows that the best time of day to fly to Patna is in the evening. Flights from Illinois to Patna during this time can be as low as $1,308. Try not to purchase tickets in the morning because they tend to be around $1,319. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Illinois to Patna flight deals and tips

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

Best Price Found	$484
Fastest flight time	19h 10m
Direct flights	None
Airports in Patna	1 airport

The best one-way flight to Patna from Illinois in the past 72 hours is $484. The best round-trip flight deal from Illinois to Patna found on momondo in the last 72 hours is $782.

The fastest flight from Illinois to Patna takes 19h 10m

There are no direct flights from Illinois to Patna. Popular non-direct route for this connection is Chicago O'Hare Intl Airport - Patna Airport.

There is 1 airport near Patna: Patna (PAT)

Search flight deals

When did momondo last update prices for flights from Illinois to Patna Airport?
Prices for flights from Illinois to Patna Airport refresh daily.
How many operators does momondo search for flights from Illinois to Patna Airport?
As of August 2025, there is 1 operator available to choose from for flights from Illinois to Patna Airport.
How old do you have to be to fly from Illinois to Patna Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Patna Airport.
What documentation or ID do you need to fly to Patna Airport?
The required travel and health documents for your Patna 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 Patna Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Patna

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

Airline	Rating	Free Cancellation	Price
Air India	PriceFrom $848	Free Cancellation	Rating 5.5 2,930 reviews		Search Air India flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Patna for you.

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

Yes. momondo enables you to select and highlight flights to Patna from Illinois with this policy.

How can momondo help me find flights from Illinois to Patna?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Patna from Illinois.

I’m not ready to book a flight from Illinois to Patna right now. Can momondo alert me if prices change?

Price alerts on flights to Patna from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.