How many flights depart from Connecticut to Illinois on average per day?

165 flights are operational daily from Connecticut to Illinois as of February 2026. The most popular departure time for this route is 6:00AM, with 67% of flights per day taking off at noon.

How long is the flight from Connecticut to Illinois?

The flight from Connecticut to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Hartford (a popular airport in Connecticut) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 2h 33m on average. If you fly from New Haven (another popular airport in Connecticut) to Chicago O'Hare Intl Airport, then the average flight time is 2h 45m.

What airlines fly to Illinois?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Connecticut according to our data. American Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

Frontier, Southwest, and Delta are the most popular carriers operating from Connecticut to Illinois

How many flights depart from Connecticut to Illinois on average per week?

1,156 flights are operational weekly from Connecticut to Illinois as of February 2026. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.

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

Prices for flights from Connecticut to Illinois were last updated today.

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

As of February 2026, there are 7 operators available to choose from for flights from Connecticut to Illinois.

How old do you have to be to fly from Connecticut to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Connecticut to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$54 Cheap Flights from Connecticut to Illinois in 2026

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Find the cheapest flights from Connecticut to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:42 am - 10:20 am

LGA

ORD

2h 38mnonstop

7:31 pm - 10:36 pm

ORD

LGA

2h 05mnonstop

$82Spirit Airlines

Tue, Mar 17 - Tue, Mar 24

8:42 am - 10:20 am

LGA

ORD

2h 38mnonstop

7:31 pm - 10:36 pm

ORD

LGA

2h 05mnonstop

$83Spirit Airlines

Tue, Mar 24 - Sat, Apr 4

6:00 am - 7:25 am

LGA

MDW

2h 25mnonstop

8:10 am - 11:15 am

MDW

LGA

2h 05mnonstop

$136Southwest

Tue, Apr 14 - Mon, Apr 27

6:00 am - 7:25 am

LGA

MDW

2h 25mnonstop

5:20 am - 8:20 am

MDW

LGA

2h 00mnonstop

$141Southwest

Wed, Apr 29 - Sun, May 3

6:00 am - 9:46 am

LGA

STL

4h 46m

1 stop

10:50 am - 3:50 pm

STL

LGA

4h 00m

1 stop

$276Delta

Thu, Apr 9 - Sat, Apr 11

5:30 pm - 11:36 pm

JFK

STL

7h 06m

1 stop

4:20 pm - 8:00 pm

STL

JFK

2h 40mnonstop

$277Delta

Tue, May 5 - Tue, May 12

2:10 pm - 6:53 pm

LGA

STL

5h 43m

1 stop

5:28 pm - 11:23 pm

STL

LGA

4h 55m

1 stop

$279United Airlines

Wed, May 6 - Sat, May 9

2:59 pm - 11:46 pm

JFK

STL

9h 47m

1 stop

7:05 am - 8:03 pm

STL

JFK

11h 58m

1 stop

$282American Airlines

Wed, Apr 15 - Thu, Apr 16

9:40 am - 5:12 pm

JFK

STL

8h 32m

1 stop

8:00 am - 7:59 pm

STL

JFK

10h 59m

1 stop

$283American Airlines

Thu, May 14 - Sat, May 16

9:47 pm - 11:51 pm

EWR

STL

3h 04mnonstop

7:00 am - 10:29 am

STL

EWR

2h 29mnonstop

$320United Airlines

Wed, Mar 18 - Sun, Mar 22

Frontier flights from Connecticut to Illinois

Our best Frontier deals on Connecticut to Illinois flight tickets

Frontier

Mar 16

JFK4:29 pmNew York John F Kennedy Intl

3h 00m

ORD6:29 pmChicago O'Hare Intl

Mar 31

ORD8:06 amChicago O'Hare Intl

2h 24m

JFK11:30 amNew York John F Kennedy Intl

$85

Frontier

Mar 19

JFK4:29 pmNew York John F Kennedy Intl

3h 00m

ORD6:29 pmChicago O'Hare Intl

Mar 23

ORD12:05 pmChicago O'Hare Intl

2h 24m

JFK3:29 pmNew York John F Kennedy Intl

$86

Frontier

Mar 10

JFK4:29 pmNew York John F Kennedy Intl

3h 00m

ORD6:29 pmChicago O'Hare Intl

Mar 11

ORD12:05 pmChicago O'Hare Intl

2h 24m

JFK3:29 pmNew York John F Kennedy Intl

$87

Spirit Airlines flights from Connecticut to Illinois

Our best Spirit Airlines deals on Connecticut to Illinois flight tickets

Spirit Airlines

Mar 17

LGA8:42 amNew York LaGuardia

2h 38m

ORD10:20 amChicago O'Hare Intl

Mar 24

ORD7:31 pmChicago O'Hare Intl

2h 05m

LGA10:36 pmNew York LaGuardia

$82

Spirit Airlines

Mar 24

LGA8:42 amNew York LaGuardia

2h 38m

ORD10:20 amChicago O'Hare Intl

Apr 4

ORD7:31 pmChicago O'Hare Intl

2h 05m

LGA10:36 pmNew York LaGuardia

$83

Spirit Airlines

Mar 20

LGA8:42 amNew York LaGuardia

2h 38m

ORD10:20 amChicago O'Hare Intl

Mar 30

ORD7:31 pmChicago O'Hare Intl

2h 05m

LGA10:36 pmNew York LaGuardia

$84

Fly from

Fly to

Route

Depart

Return

Price

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 3/17

8:42 am-10:20 am

Nonstop2h 38m

Chicago O'Hare Intl

Tue 3/24

7:31 pm-10:36 pm

Nonstop2h 05m

$82

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 3/24

8:42 am-10:20 am

Nonstop2h 38m

Chicago O'Hare Intl

Sat 4/4

7:31 pm-10:36 pm

Nonstop2h 05m

$83

New YorkChicago

LGA - MDW

LGAMDW

New York LaGuardia

Tue 4/14

6:00 am-7:25 am

Nonstop2h 25m

Chicago Midway

Mon 4/27

8:10 am-11:15 am

Nonstop2h 05m

$136

New YorkChicago

LGA - MDW

LGAMDW

New York LaGuardia

Wed 4/29

6:00 am-7:25 am

Nonstop2h 25m

Chicago Midway

Sun 5/3

5:20 am-8:20 am

Nonstop2h 00m

$141

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 4/9

6:00 am-9:46 am

1 stop4h 46m

Lambert-St Louis

Sat 4/11

10:50 am-3:50 pm

1 stop4h 00m

$276

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Tue 5/5

5:30 pm-11:36 pm

1 stop7h 06m

Lambert-St Louis

Tue 5/12

4:20 pm-8:00 pm

Nonstop2h 40m

$277

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/6

2:10 pm-6:53 pm

1 stop5h 43m

Lambert-St Louis

Sat 5/9

5:28 pm-11:23 pm

1 stop4h 55m

$279

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 4/15

2:59 pm-11:46 pm

1 stop9h 47m

Lambert-St Louis

Thu 4/16

7:05 am-8:03 pm

1 stop11h 58m

$282

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Thu 5/14

9:40 am-5:12 pm

1 stop8h 32m

Lambert-St Louis

Sat 5/16

8:00 am-7:59 pm

1 stop10h 59m

$283

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 3/18

9:47 pm-11:51 pm

Nonstop3h 04m

Lambert-St Louis

Sun 3/22

7:00 am-10:29 am

Nonstop2h 29m

$320

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 Connecticut to Illinois

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

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Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Connecticut is in January. Flight prices, which tend to average around $288, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $295.

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

The cheapest day to depart from Connecticut to Illinois is on a Wednesday when prices can be found for as low as $425. Flights from Connecticut to Illinois on a Sunday will generally be more expensive and average around $529. 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 Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Connecticut to Illinois during this time can be as low as $411. Flights at noon are often more expensive with an average ticket price of $474.

What is the cheapest Connecticut to Illinois flight route?

Fly from Tweed-New Haven to Chicago O'Hare Intl for the best Connecticut - Illinois flight prices

What cabin class options are available on Connecticut to Illinois flights?

There are 4 cabin classes available to choose from on Connecticut to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Connecticut to Illinois flights?

No. A direct flight is the cheapest option for a flight between Connecticut to Illinois.

Cheap Connecticut to Illinois flight deals and tips

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

Best Price Found	$204
Fastest flight time	2h 15m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Connecticut in the past 72 hours is $204. The best round-trip flight deal from Connecticut to Illinois found on momondo in the last 72 hours is $111.

The fastest flight from Connecticut to Illinois takes 2h 15m

Direct flights go from Connecticut to Illinois every day.

There are 98 airports in Illinois. From Connecticut there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW).

Search flight deals

When did momondo last update prices for flights from Connecticut to Illinois?
Prices for flights from Connecticut to Illinois were last updated today.
How many operators does momondo search for flights from Connecticut to Illinois?
As of February 2026, there are 7 operators available to choose from for flights from Connecticut to Illinois.
How old do you have to be to fly from Connecticut to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Connecticut to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Connecticut to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Connecticut to Illinois is Boeing 737-800, representing 31.74% of all bookings. The subsequent popular models are Embraer 175 at 16.87%, Airbus A320-100/200 at 8.23%, and Embraer 175 (Enhanced Winglets) at 8.15%.

Best airlines flying from Connecticut to Illinois

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

Airline	Rating	Free Cancellation	Price
Avelo Airlines	PriceFrom $76	Free Cancellation	Rating 7.6 88 reviews	Search Avelo Airlines flights
American Airlines	PriceFrom $172	Free Cancellation	Rating 7.1 11,371 reviews	Search American Airlines flights
Delta	PriceFrom $176	Free Cancellation	Rating 7.9 8,245 reviews	Search Delta flights
Southwest	PriceFrom $177	Free Cancellation	Rating 8.0 4,303 reviews	Search Southwest flights
United Airlines	PriceFrom $216	Free Cancellation	Rating 7.4 9,366 reviews	Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Connecticut to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

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

All flight searches from Connecticut to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Connecticut to Illinois 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 Connecticut to Illinois right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Connecticut and alert you when they change.

An easier way to manage your Illinois trip

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Popular cities in Illinois

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $54

Flights to Miamifrom $49

Flights to Orlandofrom $56

Flights to Chicagofrom $53

Flights to San Franciscofrom $50

Flights to Las Vegasfrom $53

Flights to Washington, D.C.from $56

Flights to Bostonfrom $75

Flights to Atlantafrom $49

Flights to Dallasfrom $54

Flights to Seattlefrom $48

Cheap flights from Connecticut to Illinois from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Connecticut to Illinois departing on 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Connecticut to Illinois

Our best Frontier deals on Connecticut to Illinois flight tickets

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Our best Spirit Airlines deals on Connecticut to Illinois flight tickets

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See travel insights to Illinois from

How to get the cheapest flight ticket from Connecticut to Illinois

What is the cheapest month to fly to Illinois?

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

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

What is the cheapest Connecticut to Illinois flight route?

What cabin class options are available on Connecticut to Illinois flights?

Can stopping save me money on Connecticut to Illinois flights?

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

What airlines fly to Illinois?

How many flights depart from Connecticut to Illinois on average per day?

How many flights depart from Connecticut to Illinois on average per week?

How long is the flight from Connecticut to Illinois?

Cheap Connecticut to Illinois flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Best airlines flying from Connecticut to Illinois

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

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

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Popular flights according to clicks in the last 7 days on momondo

Connecticut flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

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