
Round-trip from | $78 (Cheapflightsfares) |
|---|---|
One-way from | $53 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $220 |
Good round-trip deal | $153 or less |
Good one-way deal | $128 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 2/19
1:22 pm-1:09 pm
1 stop22h 47m
Lambert-St Louis
Mon 2/23
8:47 pm-11:28 pm
Nonstop3h 41m
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Wed 3/4
11:03 pm-7:02 am
1 stop29h 59m
Lambert-St Louis
Mon 3/9
12:14 pm-2:11 pm
Nonstop3h 57m
Las VegasChicago
LAS - ORD
LASORD
Las Vegas Harry Reid Intl
Fri 2/27
5:30 am-1:25 pm
1 stop5h 55m
Chicago O'Hare Intl
Tue 3/3
9:15 am-3:21 pm
1 stop8h 06m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sat 2/28
5:10 pm-6:51 am
2 stops36h 41m
Lambert-St Louis
Wed 3/4
5:18 pm-11:59 pm
1 stop7h 41m
Las VegasChicago
LAS - MDW
LASMDW
Las Vegas Harry Reid Intl
Fri 2/20
12:59 am-3:19 pm
1 stop12h 20m
Chicago Midway
Tue 2/24
6:10 am-12:45 pm
1 stop8h 35m
Las VegasChicago
LAS - MDW
LASMDW
Las Vegas Harry Reid Intl
Fri 2/27
5:25 am-10:50 am
Nonstop3h 25m
Chicago Midway
Sat 2/28
6:05 pm-8:10 pm
Nonstop4h 05m
Las VegasChicago
LAS - ORD
LASORD
Las Vegas Harry Reid Intl
Wed 4/15
12:59 am-9:50 am
1 stop6h 51m
Chicago O'Hare Intl
Sun 4/19
9:18 pm-11:36 pm
Nonstop4h 18m
Las VegasChicago
LAS - MDW
LASMDW
Las Vegas Harry Reid Intl
Tue 2/24
11:40 pm-5:05 am
Nonstop3h 25m
Chicago Midway
Tue 3/3
7:50 pm-9:55 pm
Nonstop4h 05m
Las VegasChicago
LAS - ORD
LASORD
Las Vegas Harry Reid Intl
Tue 2/10
4:31 pm-5:03 pm
1 stop22h 32m
Chicago O'Hare Intl
Sat 2/21
4:42 pm-11:02 pm
1 stop8h 20m
Las VegasChicago
LAS - MDW
LASMDW
Las Vegas Harry Reid Intl
Sat 2/21
5:05 am-10:30 am
Nonstop3h 25m
Chicago Midway
Tue 2/24
7:50 pm-9:55 pm
Nonstop4h 05m
Currently, February is the cheapest month in which you can book a flight from Arizona to Illinois (average of $62). Flying from Arizona to Illinois in June is currently the most expensive (average of $178). 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 typically best to fly out from Arizona to Illinois in the morning. Doing so could potentially save you 21% on the flight price compared to flying in the afternoon, which is usually more expensive.
Travelers seeking maximum savings on their Arizona to Illinois flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from USAZ to USIL are scheduled on a Monday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Food
Crew
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$66 | Average$220 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$79 | Average$166 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$93 | Average$212 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$118 | Average$322 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$366 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$187 | Average$370 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$198 | Average$462 | FlexibilityNo cancel fee | On-time71% |