Spirit's Big Front Seats offer 11 inches more legroom, perfect for added comfort on short flights.
Spirit's self-service bag drop saves time; print your boarding pass to avoid extra fees.

Round-trip from | $95 (Priceline) |
|---|---|
One-way from | $59 (United Airlines) |
Popular in | April |
Cheapest in | August |
Average price | $203 |
Fly from
Fly to
Route
Depart
Return
Price
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
mar. 12/16
5:13 pm-7:47 pm
Nonstop2h 34m
Chicago O'Hare Intl
mar. 12/16
8:53 pm-11:49 pm
Nonstop2h 56m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
jeu. 1/22
8:16 pm-10:58 pm
Nonstop2h 42m
Chicago O'Hare Intl
lun. 1/26
9:05 pm-12:12 am
Nonstop3h 07m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
lun. 12/1
8:54 pm-3:12 pm
1 stop18h 18m
Chicago O'Hare Intl
ven. 2/6
12:18 pm-3:34 pm
Nonstop3h 16m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
jeu. 1/1
6:30 am-9:17 am
Nonstop2h 47m
Chicago O'Hare Intl
mar. 1/6
7:35 am-10:40 am
Nonstop3h 05m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
ven. 12/12
8:07 pm-1:16 pm
1 stop17h 09m
Chicago O'Hare Intl
dim. 12/14
5:11 am-1:56 pm
1 stop8h 45m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
mer. 1/7
6:37 pm-11:57 pm
1 stop5h 20m
Chicago O'Hare Intl
ven. 1/9
5:55 pm-11:58 pm
1 stop6h 03m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
mer. 2/18
6:00 pm-11:54 pm
1 stop5h 54m
Chicago O'Hare Intl
mer. 3/4
7:00 am-2:55 pm
1 stop7h 55m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
ven. 12/5
6:35 pm-9:16 pm
Nonstop2h 41m
Chicago O'Hare Intl
lun. 12/8
9:08 pm-11:59 pm
Nonstop2h 51m
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
jeu. 1/8
10:35 am-4:43 pm
1 stop6h 08m
Chicago O'Hare Intl
lun. 1/12
9:53 am-5:42 pm
1 stop7h 49m
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
mar. 12/16
6:00 am-12:10 pm
1 stop6h 10m
Chicago O'Hare Intl
mar. 12/16
4:20 pm-10:48 pm
1 stop6h 28m
The best time to book flights from Houston to Chicago O'Hare Intl Airport is 88 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, March is the cheapest month in which you can book a flight from Houston to Chicago O'Hare Intl Airport (average of $53). Flying from Houston to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $116). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Houston to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 64% versus a flight at noon.
Travelers seeking maximum savings on their Houston to Chicago O'Hare Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Entertainment
Boarding
Crew
Food
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Boarding
Crew
Food
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Boarding
Crew
Food
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Boarding
Crew
Food
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Boarding
Crew
Food
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$77 | Average$170 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$165 | Average$425 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$177 | Average$355 | FlexibilityNo cancel fee | On-time69% |