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.
When is the cheapest time to fly from Illinois to Houston (IL - HO1)?

When flying from Illinois to Houston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

August can be a great time to fly to Houston from Illinois with a flight ticket averaging about $136. Cheapflights users have found deals in the month of August for as cheap as $37. The most expensive prices can be found in the month of December.

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

To save up to 21% on this flight, we recommend booking at least 18 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Illinois to Houston from $128 1-2 weeks out and tickets from $164 for flights departing within the next 72 hours.

Cheap flights from Illinois to Houston in October, November 2021

The best prices found for Illinois to IAH flights for October, November
30 Oct - 13 Nov
$37pp
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
28 Oct - 30 Oct
$38pp
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
28 Oct - 30 Oct
$40pp
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
30 Oct - 13 Nov
$37pp
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
28 Oct - 30 Oct
$38pp
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 Dec - 6 Dec
$39pp
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
6 Nov - 13 Nov
$37pp
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 Dec - 11 Dec
$38pp
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 Dec - 6 Dec
$39pp
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
30 Oct - 13 Nov
$37pp
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
28 Oct - 30 Oct
$38pp
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
28 Oct - 30 Oct
$40pp
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
4:00 am - 6:45 am
American Airlines
Nonstop
2h 45m
ORD - IAH
American Airlines
6:12 am - 4:15 am
Frontier
1 Stop
22h 03m
STL - IAH
Frontier
$55
Kiwi.com
2:05 am - 4:48 am
Spirit Airlines
Nonstop
2h 43m
ORD - IAH
Spirit Airlines
$57
FlightNetwork

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

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

Due to the rapidly changing circumstances due to COVID-19, airlines like Spirit Airlines, United Airlines, and American Airlines flying from Illinois to Houston have implemented new flexible cancellation policies.

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 $37, but on average you can expect to pay $50.

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 $52.

Are there last-minute flights available from Illinois to Houston for under $100?

There are currently 20+ open flights from Illinois to Houston within the next 7 days for less than $100.

What days are nonstop flights available from Illinois to Houston?

You can find nonstop flights on the following days: Monday, Friday, Saturday.

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

Travelers can expect 13 flights from Illinois to Houston on average per day.
Morning (6am - Noon) - 46% of flight departures
Afternoon (Noon - 6pm) - 23% of flight departures
Evening (6pm - Midnight) - 31% of flight departures

How long is the flight from Illinois to Houston?

A quick flight from Illinois to Houston can take about 2h 44m. Spirit Airlines provides one of the quickest options available for as low as $37. Illinois and Houston are separated by a distance of 930 mi. All flights are typically nonstop.

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

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $18. However, be on the lookout for offers from American Airlines and Frontier, as they are both options that can get you from Illinois to Houston for a low price.

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 cheapest flights from Illinois to Houston?

Looking at all options, your cheapest flight can be booked for $48. While the most popular route (Chicago O'Hare Intl - Houston Hobby) can be booked for $42 on average our data indicates $509 when flying from Illinois to Houston

What are the most reliable airlines from Illinois to Houston?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Houston on time: Envoy Air (100%), Asiana Airlines (100%), Avianca (94%).

What are the most popular routes from Illinois to Houston?

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

COVID Restrictions

View COVID Travel Restrictions for Houston, TX

Do I need a COVID test to fly to Houston from Illinois?

Information is based on travel restrictions for travel to Houston within the United States

Most visitors from Illinois need to provide a negative COVID-19 test result and/or quarantine to enter Houston.

COVID-19 testing requirements
Visitors from Illinois must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Houston.

Quarantine requirements
Visitors from Illinois are not required to quarantine after entering Houston.

Do I need a test to fly back to Illinois from Houston?

Returning to Illinois from Houston

COVID-19 testing requirements
Visitors from Houston must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Illinois.

Quarantine requirements
Visitors from Houston are not required to quarantine after entering Illinois.

Hide COVID Travel Restrictions for Houston, TX

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 from Illinois to Houston
2h 41m
Average temperature for October in Houston
77.0 °F

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
United Airlines
$48 $320 No cancel fee 69%
American Airlines
$48 $386 No cancel fee 71%
Spirit Airlines
$56 $176 No cancel fee 65%
Delta
$87 $353 No cancel fee N/A
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