
Round-trip from | $81 (Super.com) |
|---|---|
One-way from | $28 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $220 |
Good round-trip deal | $219 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
Mon 2/23
4:09 pm-8:02 pm
Nonstop2h 53m
Lambert-St Louis
Mon 3/2
8:47 pm-11:28 pm
Nonstop3h 41m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 2/18
8:04 pm-9:26 pm
1 stop24h 22m
Lambert-St Louis
Sat 2/21
2:51 pm-11:16 am
1 stop21h 25m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 2/18
8:04 pm-9:26 pm
1 stop24h 22m
Lambert-St Louis
Thu 2/26
10:11 pm-8:50 am
1 stop11h 39m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Fri 2/6
4:54 pm-11:33 pm
2 stops29h 39m
Lambert-St Louis
Sun 2/8
1:03 pm-3:44 pm
Nonstop3h 41m
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Sat 2/28
5:15 am-9:30 am
Nonstop3h 15m
Chicago Midway
Sat 3/7
8:10 pm-11:00 pm
Nonstop3h 50m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Sat 2/28
5:45 am-2:05 pm
1 stop7h 20m
Chicago O'Hare Intl
Sat 3/7
3:05 pm-6:05 pm
Nonstop4h 00m
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Sat 2/28
7:05 am-2:30 pm
1 stop6h 25m
Chicago Midway
Tue 3/3
5:05 am-8:15 am
Nonstop4h 10m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 3/10
5:31 pm-10:59 pm
Nonstop3h 28m
Chicago O'Hare Intl
Sat 3/14
6:20 pm-11:16 pm
1 stop6h 56m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Thu 2/12
9:30 am-9:03 pm
1 stop10h 33m
Chicago O'Hare Intl
Mon 2/16
5:40 am-11:59 pm
1 stop19h 19m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 2/18
9:52 am-3:53 pm
1 stop5h 01m
Lambert-St Louis
Fri 2/20
1:59 pm-12:41 am
1 stop11h 42m
Currently, February is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Illinois (average of $62). Flying from Phoenix Sky Harbor Intl Airport to Illinois in July is currently the most expensive (average of $193). 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.
A simple way to save on the total cost of your ticket is to fly from Phoenix Sky Harbor Intl Airport to Illinois in the afternoon. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight at noon.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Illinois flight should consider departing on Thursday evenings 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 PHX 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
Crew
Food
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Crew
Food
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Crew
Food
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Crew
Food
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Crew
Food
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Entertainment
Crew
Food
Boarding
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$66 | Average$204 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$79 | Average$166 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$118 | Average$322 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$335 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$187 | Average$321 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$198 | Average$450 | FlexibilityNo cancel fee | On-time71% |