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Cheap flights from Illinois to Patna from ₹ 38,939

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PAT
17 Mar — 24 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Patna

Enter your travel dates to find the best prices.

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 15 February 2026.

Sun 1/313:10
ORD
-
PAT
3 stops33h 00m
Multiple Airlines
Sat 18/416:35
PAT
-
ORD
2 stops26h 30m
Multiple Airlines
Deal found 11/2₹ 99,520
Sun 1/313:30
ORD
-
PAT
1 stop32h 40m
Air India
Sat 18/419:10
PAT
-
ORD
2 stops26h 30m
Air India
Deal found 11/2₹ 102,146
Wed 25/220:20
ORD
-
PAT
2 stops36h 55m
IndiGo
Thu 12/321:15
PAT
-
ORD
2 stops32h 40m
IndiGo
Deal found 15/2₹ 102,237
Mon 16/213:30
ORD
-
PAT
1 stop19h 45m
Multiple Airlines
Fri 6/309:55
PAT
-
ORD
2 stops33h 10m
Multiple Airlines
Deal found 14/2₹ 109,753
Wed 25/213:30
ORD
-
PAT
1 stop37h 40m
Air India
Thu 12/315:30
PAT
-
ORD
2 stops41h 56m
Air India
Deal found 15/2₹ 110,839
Mon 16/220:20
ORD
-
PAT
2 stops30h 20m
IndiGo
Fri 6/314:55
PAT
-
ORD
2 stops39h 00m
IndiGo
Deal found 14/2₹ 111,654
Sat 28/312:20
ORD
-
PAT
2 stops43h 40m
Air India
Sat 4/419:10
PAT
-
ORD
2 stops26h 30m
Air India
Deal found 11/2₹ 112,922

Find flight deals from Illinois to Patna

Keep the following information in mind while searching for Illinois to Patna flight deals. Data was last updated 15 February 2026.

Round-trip from

₹ 99,520

One-way from

₹ 38,939
1/3-18/4
  • 1/3-18/4
  • 5 total stops
  • 59h 30m total
  • Illinois to Patna
Search Deals
IndiGo
  • IndiGo
  • 20/2
  • 2 total stops
  • 36h 55m total
  • Illinois to Patna
Search Deals

Cheapflights Fare Finder

 
Customise 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 454,620 searches. Data last updated 15 February 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 1/3

13:10-09:40

3 stops33h 00m

Patna

Sat 18/4

16:35-08:35

2 stops26h 30m

₹ 99,520

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sun 1/3

13:30-09:40

1 stop32h 40m

Patna

Sat 18/4

19:10-11:10

2 stops26h 30m

₹ 102,146

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Wed 25/2

20:20-20:45

2 stops36h 55m

Patna

Thu 12/3

21:15-19:25

2 stops32h 40m

₹ 102,237

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Wed 25/2

13:30-14:40

1 stop37h 40m

Patna

Thu 12/3

15:30-22:56

2 stops41h 56m

₹ 110,839

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sat 28/3

12:20-18:30

2 stops43h 40m

Patna

Sat 4/4

19:10-11:10

2 stops26h 30m

₹ 112,922

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Sat 28/3

14:10-09:50

3 stops33h 10m

Patna

Sat 4/4

16:35-11:10

3 stops53h 05m

₹ 132,844

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Fri 20/2

20:20-20:45

2 stops36h 55m

₹ 38,939

ChicagoPatna

ORD - PAT

ORDPAT

Chicago O'Hare Intl

Fri 20/2

13:30-09:40

1 stop32h 40m

₹ 39,301

Flights are sorted by cheapest return flights first.

Deals found on 14/2

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 return 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?

    For a flight from Illinois to Patna, you will be flying into Patna. Patna (PAT) is just 3.0 km from the centre of the city.

  • How long is the flight from Illinois to Patna?

    There are many flights that can get you from Illinois to Patna in 32h 40m. Fly via Air India or IndiGo to get the fastest option. Airlines will cover a distance of 12458 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 holiday 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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Need flexible booking options for your flight to Patna from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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