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$764+ Cheap flights from Illinois to Patna (PAT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PAT
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Illinois to Patna

Keep the following information in mind while searching for Illinois to Patna flight deals. Data was last updated January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$764
(oojo)
Provider with most accurate pricing for Chicago (CHI)-Patna flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Patna flights.
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From Illinois to Patna
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Find flight deals from Illinois to Patna

Cheapest flights from Illinois to Patna
Explore the most affordable flight options available from Illinois to Patna. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This oojo deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/221:30 pmORD - PAT
1 stop35h 35mAir India
Sun 3/17:10 pmPAT - ORD
2 stops27h 50mAir India
Deal found 1/8$764
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/41:30 pmORD - PAT
1 stop37h 40mAir India
Mon 2/161:05 pmPAT - ORD
3 stops57h 55mAir India
Deal found 1/7$949
This CheapOair deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/41:30 pmORD - PAT
1 stop37h 40mMultiple Airlines
Mon 2/164:35 pmPAT - ORD
2 stops37h 20mMultiple Airlines
Deal found 1/8$1,023
This Indian Eagle deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/11:30 pmORD - PAT
1 stop35h 35mAir India
Mon 2/164:45 pmPAT - ORD
3 stops54h 15mAir India
Deal found 1/6$1,035
This CheapOair deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/318:20 pmORD - PAT
2 stops36h 45mMultiple Airlines
Sun 2/159:10 amPAT - ORD
3 stops37h 50mMultiple Airlines
Deal found 1/6$1,042
This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/11:30 pmORD - PAT
1 stop20h 05mMultiple Airlines
Mon 2/165:45 pmPAT - ORD
2 stops32h 15mMultiple Airlines
Deal found 1/6$1,100

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Patna that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Illinois to Patna that are best for you.

Fly from

Illinois

Fly to

Patna

Route

Depart

Return

Price

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sun 2/22

1:30 pm-12:35 pm

1 stop35h 35m

Patna

Sun 3/1

7:10 pm-11:30 am

2 stops27h 50m

$764

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Wed 2/4

1:30 pm-2:40 pm

1 stop37h 40m

Patna

Mon 2/16

1:05 pm-11:30 am

3 stops57h 55m

$949

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Wed 2/4

1:30 pm-2:40 pm

1 stop37h 40m

Patna

Mon 2/16

4:35 pm-6:25 pm

2 stops37h 20m

$1,023

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sun 2/1

1:30 pm-12:35 pm

1 stop35h 35m

Patna

Mon 2/16

4:45 pm-11:30 am

3 stops54h 15m

$1,035

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sun 2/1

1:30 pm-9:05 pm

1 stop20h 05m

Patna

Mon 2/16

5:45 pm-2:30 pm

2 stops32h 15m

$1,100

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sun 2/1

1:30 pm-12:30 pm

2 stops35h 30m

Patna

Sun 2/15

1:05 pm-11:30 am

3 stops33h 55m

$1,186

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Best time to book a flight from Illinois to Patna

Have a flexible travel schedule? Discover the best time to fly to Patna from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Patna
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Patna. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Patna from Illinois?

    If you book a flight to Patna from Illinois, you will be flying to Patna, which is the city’s only airport. Patna (PAT) is located 1.8 mi from the center of Patna.

  • How long is the flight from Illinois to Patna?

    Air India can get you from Illinois to Patna in just under 35h 35m. Your travel time can differ by up to . The distance between Illinois and Patna is about 7741 mi.

  • Can I find deals for flights from Illinois to Patna that include hotel bookings?

    Yes. In addition to deals on Illinois to Patna flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Patna?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Patna.

  • Can I find deals for business class flights from Illinois to Patna?

    Yes. Cheapflights offers flight deals from Illinois to Patna by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top airline flying from Illinois to Patna

Discover the top airline that operate flights from Illinois to Patna. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$801Average$1,102FlexibilityNo cancel feeOn-timeN/A

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