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

As of December 2025, 40 flights take off from Illinois and land in Houston each day. The most common flight departure time for this route is 8:00PM, with 35% of daily flights taking off in the evening.

What airlines fly to Houston?

American Airlines, Frontier and United Airlines are the top three most popular airlines that fly to Houston from Illinois according to our data. American Airlines is the first choice among our users, with 26% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 6 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

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

As of December 2025, 285 flights take off from Illinois and land in Houston each week. The most common flight departure day for this route is Thu, with 21% of weekly flights taking off on this day.

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

Spirit Airlines, Frontier, and United Airlines are the most popular carriers operating from Illinois to Houston

How long does it take to fly to Houston?

Average flight duration from Illinois to Houston depends on which airport you fly into and out of. Flying from Chicago to Houston Hobby Airport is 2h 43m on average, while flying from Moline to Houston Hobby Airport is 4h 58m on average. Houston Hobby Airport is the most popular airport in Houston.

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

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

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

The number of operators available for flights from Illinois to Houston is 6 as of December 2025.

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

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 Houston.

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

The travel and health documents required for your trip to Houston 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 Houston. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$51 Cheap Flights from Illinois to Houston in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Illinois to Houston

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 9:31 am

ORD

IAH

3h 01mnonstop

11:52 am - 2:40 pm

IAH

ORD

2h 48mnonstop

$83Frontier

Fri, Feb 20 - Mon, Feb 23

4:19 pm - 7:41 pm

ORD

IAH

3h 22mnonstop

11:38 am - 2:17 pm

IAH

ORD

2h 39mnonstop

$85Multiple Airlines

Sun, Feb 8 - Wed, Feb 11

3:22 pm - 6:22 pm

ORD

IAH

3h 00mnonstop

11:17 am - 2:05 pm

IAH

ORD

2h 48mnonstop

$86Multiple Airlines

Tue, Feb 3 - Thu, Feb 12

3:00 pm - 6:06 pm

MDW

IAH

3h 06mnonstop

6:51 pm - 9:29 pm

IAH

MDW

2h 38mnonstop

$87Frontier

Fri, Feb 27 - Sun, Mar 1

9:00 am - 12:00 pm

ORD

IAH

3h 00mnonstop

5:15 am - 7:54 am

IAH

ORD

2h 39mnonstop

$89Spirit Airlines

Thu, Feb 26 - Sun, Mar 1

3:22 pm - 6:22 pm

ORD

IAH

3h 00mnonstop

11:38 am - 2:17 pm

IAH

ORD

2h 39mnonstop

$91Spirit Airlines

Sat, Jan 17 - Sun, Jan 18

7:35 pm - 10:25 pm

MDW

HOU

2h 50mnonstop

8:30 pm - 10:55 pm

HOU

MDW

2h 25mnonstop

$157Southwest

Sat, Jan 17 - Tue, Jan 20

7:55 pm - 10:40 pm

MDW

HOU

2h 45mnonstop

8:30 pm - 10:55 pm

HOU

MDW

2h 25mnonstop

$177Southwest

Tue, Jan 20 - Wed, Jan 21

11:15 am - 4:10 pm

ORD

HOU

4h 55m1 stop

5:04 pm - 11:56 pm

HOU

ORD

6h 52m1 stop

$197Delta

Sat, Jan 24 - Sat, Jan 31

5:20 pm - 11:56 pm

MLI

IAH

6h 36m1 stop

5:15 pm - 10:33 pm

IAH

MLI

5h 18m1 stop

$203Delta

Sat, Jan 31 - Sat, Feb 7

Delta flights from Illinois to Houston

Our best Delta deals on Illinois to Houston flight tickets

Delta

Jan 24

ORD3:24 pmChicago O'Hare Intl

7h 09m

1 stop

HOU10:33 pmHouston Hobby

Jan 27

HOU5:45 amHouston Hobby

7h 55m

1 stop

ORD1:40 pmChicago O'Hare Intl

$197

Find similar

Delta

Jan 31

MLI5:20 pmMoline Quad-City

6h 36m

1 stop

IAH11:56 pmHouston George Bush Intcntl

Feb 7

IAH5:15 pmHouston George Bush Intcntl

5h 18m

1 stop

MLI10:33 pmMoline Quad-City

$203

Find similar

Delta

Jan 24

ORD3:24 pmChicago O'Hare Intl

7h 09m

1 stop

HOU10:33 pmHouston Hobby

Jan 26

HOU5:04 pmHouston Hobby

6h 52m

1 stop

ORD11:56 pmChicago O'Hare Intl

$207

Find similar

Southwest flights from Illinois to Houston

Our best Southwest deals on Illinois to Houston flight tickets

Southwest

Jan 17

MDW7:35 pmChicago Midway

2h 50m

HOU10:25 pmHouston Hobby

Jan 18

HOU6:40 amHouston Hobby

2h 25m

MDW9:05 amChicago Midway

$157

Find similar

Southwest

Jan 20

MDW7:55 pmChicago Midway

2h 45m

HOU10:40 pmHouston Hobby

Jan 21

HOU8:30 pmHouston Hobby

2h 25m

MDW10:55 pmChicago Midway

$177

Find similar

Southwest

Jan 20

MDW7:55 pmChicago Midway

2h 45m

HOU10:40 pmHouston Hobby

Jan 27

HOU9:05 amHouston Hobby

4h 05m

1 stop

MDW1:10 pmChicago Midway

$187

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 2/20

6:30 am-9:31 am

Nonstop3h 01m

Houston George Bush Intcntl

Mon 2/23

11:52 am-2:40 pm

Nonstop2h 48m

$83

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sun 2/8

4:19 pm-7:41 pm

Nonstop3h 22m

Houston George Bush Intcntl

Wed 2/11

11:38 am-2:17 pm

Nonstop2h 39m

$85

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 2/3

3:22 pm-6:22 pm

Nonstop3h 00m

Houston George Bush Intcntl

Thu 2/12

11:17 am-2:05 pm

Nonstop2h 48m

$86

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Fri 2/27

3:00 pm-6:06 pm

Nonstop3h 06m

Houston George Bush Intcntl

Sun 3/1

6:51 pm-9:29 pm

Nonstop2h 38m

$87

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Thu 2/26

9:00 am-12:00 pm

Nonstop3h 00m

Houston George Bush Intcntl

Sun 3/1

5:15 am-7:54 am

Nonstop2h 39m

$89

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 1/17

3:22 pm-6:22 pm

Nonstop3h 00m

Houston George Bush Intcntl

Sun 1/18

11:38 am-2:17 pm

Nonstop2h 39m

$91

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Sat 1/17

7:35 pm-10:25 pm

Nonstop2h 50m

Houston Hobby

Tue 1/20

8:30 pm-10:55 pm

Nonstop2h 25m

$157

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Tue 1/20

7:55 pm-10:40 pm

Nonstop2h 45m

Houston Hobby

Wed 1/21

8:30 pm-10:55 pm

Nonstop2h 25m

$177

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Sat 1/24

11:15 am-4:10 pm

1 stop4h 55m

Houston Hobby

Sat 1/31

5:04 pm-11:56 pm

1 stop6h 52m

$197

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Sat 1/31

5:20 pm-11:56 pm

1 stop6h 36m

Houston George Bush Intcntl

Sat 2/7

5:15 pm-10:33 pm

1 stop5h 18m

$203

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 Houston

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

Other information

What is the cheapest month to fly to Houston?

The month of January is, on average, the cheapest month to fly to Houston from Illinois, with most prices found around $176. The month of September is another great option to travel to Houston, with average flight prices from Illinois averaging around $177.

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

On average, the least expensive day to fly to Houston from Illinois is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $339. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Sunday is $587.

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

Our data shows that the cheapest Illinois to Houston flights are usually those with departure times in the evening. Our users have found flights to Houston in the evening for as low as $270. Try not to purchase tickets in the morning because they tend to be around $374. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Illinois to Houston flight route?

Fly from Chicago Midway to Houston George Bush Intcntl for the best Illinois - Houston flight prices

How far in advance should I book a flight to Houston?

You are more likely to see cheaper flights to Houston from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $226 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Illinois for as low as $164 on momondo.

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

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

Cheap Illinois to Houston flight deals and tips

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

Fastest flight time	2h 10m
Direct flights	Every day
Airports in Houston	2 airports

The fastest flight from Illinois to Houston takes 2h 10m

Direct flights go from Illinois to Houston every day.

There are 2 airports in Houston. From Illinois there are direct flights to Houston George Bush Intcntl (IAH), Houston Hobby (HOU).

Search flight deals

When did momondo last update prices for flights from Illinois to Houston?
Prices for flights from Illinois to Houston were last updated today.
How many operators does momondo search for flights from Illinois to Houston?
The number of operators available for flights from Illinois to Houston is 6 as of December 2025.
How old do you have to be to fly from Illinois to Houston?
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 Houston.
What documentation or ID do you need to fly to Houston?
The travel and health documents required for your trip to Houston 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 Houston. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Illinois to Houston

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $67	Free Cancellation	Rating 5.7 3,069 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $74	Free Cancellation	Rating 6.3 8,204 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $130	Free Cancellation	Rating 7.4 9,114 reviews	Search United Airlines flights
American Airlines	PriceFrom $159	Free Cancellation	Rating 7.2 11,056 reviews	Search American Airlines flights
Southwest	PriceFrom $178	Free Cancellation	Rating 8.0 4,258 reviews	Search Southwest flights
Delta	PriceFrom $216	Free Cancellation	Rating 7.9 8,011 reviews	Search Delta flights

Why use momondo?

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

It is quick and easy to find Illinois to Houston 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 Houston that suits you.

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

Flights from Illinois to Houston with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Illinois to Houston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Houston 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.

An easier way to manage your Houston 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sat 1/24

Sat 1/31

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing Texas

Popular cities in the United States

Flights to New Yorkfrom $50

Flights to Los Angelesfrom $47

Flights to Miamifrom $50

Flights to Chicagofrom $51

Flights to Orlandofrom $49

Flights to San Franciscofrom $59

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $58

Flights to Bostonfrom $51

Flights to Atlantafrom $44

Flights to Dallasfrom $51

Flights to Seattlefrom $57

Cheap flights from Illinois to Houston from $51

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Houston departing on 1/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Illinois to Houston

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Delta flights from Illinois to Houston

Our best Delta deals on Illinois to Houston flight tickets

Southwest flights from Illinois to Houston

Our best Southwest deals on Illinois to Houston flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Houston that are best for you.

See travel insights to Houston from

How to get the cheapest flight ticket from Illinois to Houston

What is the cheapest month to fly to Houston?

The month of January is, on average, the cheapest month to fly to Houston from Illinois, with most prices found around $176. The month of September is another great option to travel to Houston, with average flight prices from Illinois averaging around $177.

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

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

What is the cheapest Illinois to Houston flight route?

Fly from Chicago Midway to Houston George Bush Intcntl for the best Illinois - Houston flight prices

How far in advance should I book a flight to Houston?

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

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

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

Spirit Airlines, Frontier, and United Airlines are the most popular carriers operating from Illinois to Houston

What airlines fly to Houston?

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

As of December 2025, 40 flights take off from Illinois and land in Houston each day. The most common flight departure time for this route is 8:00PM, with 35% of daily flights taking off in the evening.

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

As of December 2025, 285 flights take off from Illinois and land in Houston each week. The most common flight departure day for this route is Thu, with 21% of weekly flights taking off on this day.

How long does it take to fly to Houston?

Average flight duration from Illinois to Houston depends on which airport you fly into and out of. Flying from Chicago to Houston Hobby Airport is 2h 43m on average, while flying from Moline to Houston Hobby Airport is 4h 58m on average. Houston Hobby Airport is the most popular airport in Houston.

Cheap Illinois to Houston flight deals and tips

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

Fastest flight time

Direct flights

Airports in Houston

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

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

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

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

Best airlines flying from Illinois to Houston

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

Why use momondo?

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

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

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

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

An easier way to manage your Houston 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 the United States

Airports servicing Texas