Cheap Flights from Houston, TX to Illinois (IL) from $32 - Find Tickets & Airfare Deals at Cheapflights.com

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

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

Travelers have found it’s best to book a flight 37 days in advance to save up to 10% 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 37 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 Houston to Illinois 1-2 weeks in advance for as low as $177, or $177 for flights within the next 24 hours.

One-way flights to Illinois from Houston

The cheapest one-way flights from Houston to Illinois

12:00 pm - 2:36 pm

Sun Country Air

Nonstop

2h 36m

IAH - ORD

$38

Ovago

1:40 am - 4:19 am

Allegiant Air

Nonstop

2h 39m

IAH - ORD

$52

Ovago

4:25 pm - 11:19 am

Spirit Airlines

2 Stops

18h 54m

IAH - ORD

$59

Kiwi.com

Related info for your journey

Useful info, stats and facts about Houston to Illinois flights.

Flight FAQs

From Houston to Illinois

Are flight prices decreasing from Houston to Illinois 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 Houston and Illinois 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.

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

Yes, there are multiple flights from Houston to Illinois for under $100. The cheapest flight booked recently is on Spirit Airlines for just $32, but on average you can expect to pay $43.

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

Cheapflights has at least 20 direct flights from Houston to Illinois under $100. A good price for a nonstop flight from Houston to Illinois is less than $46.

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

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

What days are nonstop flights available from Houston to Illinois?

Nonstop flights can be found on the following days: Monday, Wednesday, Friday.

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

Before booking your flight from Houston to Illinois check out the most popular airlines for this route: Major Airline, American Airlines or Delta.

What are the most popular routes from Houston to Illinois?

When deciding which route to take from Houston to Illinois consider Houston George Bush Intcntl - Chicago O'Hare Intl, Houston George Bush Intcntl - Chicago Midway or Houston George Bush Intcntl - Moline Quad-City as they are the most popular.

What are the cheapest Flights from Houston to Illinois?

While on average a flight from Houston to Illinois is generally $125, our data shows the cheapest flight currently is $49. When looking at the most popular route, (Houston George Bush Intcntl - Chicago O'Hare Intl), you can expect to pay $32 for that flight.

What are the most reliable airlines from Houston to Illinois?

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 Houston to Illinois on time: Air New Zealand(98%), Lufthansa(97%), Austrian Airlines(97%.)

How long is the flight from Houston to Illinois?

Departing from Houston to Illinois will take you 2h 44m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Spirit Airlines, at $32, was found to be the cheapest airline from Houston to Illinois..

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

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $16. Sun Country Air flights start at $38 while deals on Allegiant Air start at $52 one-way.