Cheap flights from Illinois (IL) to Houston (IAH)

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How to find the cheapest flight from
Illinois to Houston (IAH)

All the information you need to plan the best null to IAH flight in 2021: compare Illinois to Houston flight prices with the expected peak season, weather and rainfall in Houston.
How far in advance should I book a flight from Illinois to Houston?

Travelers have found it’s best to book a flight 44 days in advance to save up to 26% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Illinois to Houston 1-2 weeks in advance for as low as $118, or $157 for flights within the next 24 hours.

What is the cheapest month to fly from Illinois to Houston?

Our data shows that February tends to be the cheapest month to fly to Houston from Illinois. Users have commonly found prices around $134 for the month, but tickets can be as low as $68. Due to multiple factors, prepare for potentially higher prices in December.

Cheap flights from Illinois to Houston in June, July 2021

The best prices found for Illinois to IAH flights for June, July
27 Jul - 3 Aug
$84pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
26 Jul - 2 Aug
$92pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
27 Jul - 1 Aug
$108pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Illinois to Houston 2021 flight deals

Cheap flights to Houston from Illinois found for this year
22 Sep - 28 Sep
$80pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
27 Jul - 3 Aug
$84pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
12 Aug - 17 Aug
$88pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Non-stop flights to Houston from Illinois

Save time with Illinois to Houston direct flight deals
22 Sep - 28 Sep
$80pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
27 Jul - 3 Aug
$84pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
12 Aug - 17 Aug
$88pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Illinois to Houston

Late deals on round-trip flights to Houston from Illinois, departing today and this week
4 Jul - 11 Jul
$132pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
2 Jul - 11 Jul
$133pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
4 Jul - 7 Jul
$138pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

One-way flights to Houston from Illinois

The cheapest one-way flights from Illinois to Houston
11:26 am - 6:12 am
Frontier
1 Stop
18h 46m
STL - IAH
Frontier
$65
Kiwi.com
10:07 am - 4:14 pm
Major Airline
1 Stop
6h 07m
ORD - IAH
Major Airline
$80
StudentUniverse
12:20 pm - 8:17 pm
American Airlines
1 Stop
7h 57m
ORD - IAH
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Illinois</span> to <span class="emphasized">Houston</span> flights.

Flight FAQs

From Illinois to Houston

Are flight prices decreasing from Illinois to Houston due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Illinois and Houston for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Illinois to Houston George Bush Intcntl have flexible cancellations due to COVID-19?

Some of our airline partners flying from Illinois to Houston George Bush Intcntl have new flexible policies in place due to COVID-19. Spirit Airlines, United Airlines, and American Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Spirit Airlines with this kind of flexibility.

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

Most people fly into Houston George Bush Intcntl (IAH) if they book a flight to Houston from Illinois. George Bush Intcntl is conveniently located just 15.9 mi from Houston’s city center.

Can I find flights from Illinois to Houston for under $100 on Cheapflights?

Yes, there are multiple flights from Illinois to Houston for under $100. The cheapest flight booked recently is on Spirit Airlines for just $80, but on average you can expect to pay $109.

Are there nonstop flights from Illinois to Houston for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Illinois to Houston under $100. A good price for a nonstop flight from Illinois to Houston is less than $110.

Are there last-minute flights available from Illinois to Houston for under $200?

There are currently 20+ open flights from Illinois to Houston within the next 7 days for less than $200.

What days are nonstop flights available from Illinois to Houston?

Nonstop flights are available for this route on the following days: Sunday, Tuesday, Friday, Saturday.

What are the most popular airlines that fly from Illinois to Houston?

When booking a flight from Illinois to Houston, you may want to consider flying on Major Airline, American Airlines or Delta as they are the most popular for this route.

What are the most popular routes from Illinois to Houston?

The most popular route from Illinois to Houston is Chicago O'Hare Intl - Houston George Bush Intcntl. You may also consider Chicago Midway - Houston George Bush Intcntl or Lambert-St Louis - Houston George Bush Intcntl.

What are the cheapest Flights from Illinois to Houston?

While on average a flight from Illinois to Houston is generally $509, our data shows the cheapest flight currently is $49. When looking at the most popular route, (Chicago O'Hare Intl - Houston George Bush Intcntl), you can expect to pay $84 for that flight.

What are the most reliable airlines from Illinois to Houston?

Before booking your flight to Houston from Illinois, check out the most reliable airlines to get you to your destination on time: LOT (100%), Spirit Airlines (96%), Avianca( 91%).

How long is the flight from Illinois to Houston?

Airlines like United Airlines and Spirit Airlines fly from Illinois to Houston in about 2h 10m. The time it takes to get you to your destination is usually consistent. Generally, flights for this route are nonstop.

What is the cheapest airline to fly from Illinois to Houston round-trip?

According to our current data, Spirit Airlines ($80), offers the cheapest pricing from Illinois to Houston.

What are the cheapest airlines to fly from Illinois to Houston one-way?

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $39. Frontier flights start at $65 while deals on Major Airline start at $80 one-way.

Departure points for flights from Illinois to Houston

Select to see more specific information for flights to Houston from all departure points in Illinois.

Destination information for Houston

Things to know before you go - useful duration and weather info for your trip from Illinois to Houston.
Flight duration
2h 44m
Average temperature for June in Houston
82.4 °F
Avg rainfall for June in Houston
0.0 ″

Airports servicing

Bloomington (BMI)
Champaign (CMI)
Decatur (DEC)
Moline (MLI)
Marion (MWA)

Airports servicing Houston

Top 4 airlines flying from Illinois to Houston

The chart below displays the airlines Cheapflights users traveling from Illinois to Houston choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$56 $154 No cancel fee 65%
Delta
$87 $348 No cancel fee N/A
United Airlines
$48 $351 No cancel fee 69%
American Airlines
$52 $387 No cancel fee 71%
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