
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $134 (Southwest) |
One-way from | $68 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $327 |
Good round-trip deal | $353 or less |
Good one-way deal | $214 or less |
Fly from
Fly to
Route
Depart
Return
Price
Oklahoma CitySt. Louis
OKC - STL
OKCSTL
Oklahoma City Will Rogers World
Tue 2/17
4:30 pm-5:55 pm
Nonstop1h 25m
Lambert-St Louis
Thu 2/19
9:50 am-11:30 am
Nonstop1h 40m
Oklahoma CityChicago
OKC - ORD
OKCORD
Oklahoma City Will Rogers World
Fri 2/27
4:52 pm-10:39 pm
1 stop5h 47m
Chicago O'Hare Intl
Sun 3/1
3:40 pm-3:56 pm
2 stops24h 16m
Oklahoma CitySt. Louis
OKC - STL
OKCSTL
Oklahoma City Will Rogers World
Tue 4/14
7:00 pm-11:48 pm
1 stop4h 48m
Lambert-St Louis
Sat 4/18
7:05 am-11:35 am
1 stop4h 30m
Oklahoma CitySt. Louis
OKC - STL
OKCSTL
Oklahoma City Will Rogers World
Wed 4/29
11:27 am-5:21 pm
1 stop5h 54m
Lambert-St Louis
Sat 5/2
2:12 pm-10:47 pm
1 stop8h 35m
Oklahoma CityChicago
OKC - ORD
OKCORD
Oklahoma City Will Rogers World
Mon 2/23
4:52 pm-11:22 am
2 stops18h 30m
Chicago O'Hare Intl
Mon 3/2
5:05 am-3:56 pm
1 stop10h 51m
Oklahoma CityChicago
OKC - MDW
OKCMDW
Oklahoma City Will Rogers World
Fri 2/27
4:52 pm-10:37 pm
1 stop5h 45m
Chicago Midway
Mon 3/2
6:00 am-3:56 pm
1 stop9h 56m
Oklahoma CityChicago
OKC - ORD
OKCORD
Oklahoma City Will Rogers World
Thu 2/26
7:12 pm-2:54 pm
2 stops19h 42m
Chicago O'Hare Intl
Mon 3/2
5:05 am-3:56 pm
1 stop10h 51m
Oklahoma CitySt. Louis
OKC - STL
OKCSTL
Oklahoma City Will Rogers World
Wed 4/15
5:21 am-10:34 am
1 stop5h 13m
Lambert-St Louis
Sat 4/18
11:43 am-4:55 pm
1 stop5h 12m
Oklahoma CitySt. Louis
OKC - STL
OKCSTL
Oklahoma City Will Rogers World
Tue 2/17
5:33 pm-11:36 pm
1 stop6h 03m
Lambert-St Louis
Sat 2/21
5:01 pm-11:54 pm
1 stop6h 53m
Oklahoma CitySt. Louis
OKC - STL
OKCSTL
Oklahoma City Will Rogers World
Thu 2/19
2:06 pm-8:41 pm
1 stop6h 35m
Lambert-St Louis
Sat 2/21
5:01 pm-11:54 pm
1 stop6h 53m
Currently, January is the cheapest month in which you can book a flight from Oklahoma City to Illinois (average of $139). Flying from Oklahoma City to Illinois in November is currently the most expensive (average of $267). 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.
It’s optimal to fly from Oklahoma City to Illinois in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the evening.
Travelers seeking maximum savings on their Oklahoma City to Illinois flight should consider departing on Tuesday at noon when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from OKC to USIL are scheduled on a Tuesday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (12 on average).
Crew
Food
Entertainment
Overall
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Overall
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Overall
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Overall
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Crew
Food
Entertainment
Overall
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$238 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$182 | Average$379 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$241 | Average$386 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$374 | FlexibilityNo cancel fee | On-time71% |