Basic Economy allows only a personal item; no carry-on bags unless you're a MileagePlus member.
Economy Plus offers extra legroom seats at the front of the economy cabin for MileagePlus Premier members.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $106 (Frontier) |
One-way from | $69 (Priceline) |
Popular in | March |
Cheapest in | October |
Average price | $235 |
Good round-trip deal | $246 or less |
Good one-way deal | $162 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Wed 12/3
1:15 pm-2:35 pm
Nonstop2h 20m
Chicago O'Hare Intl
Wed 12/10
11:05 am-2:07 pm
Nonstop2h 02m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Wed 12/24
5:00 pm-6:31 pm
Nonstop2h 31m
Chicago O'Hare Intl
Sat 1/10
11:20 am-2:31 pm
Nonstop2h 11m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Sun 1/11
6:30 am-7:59 am
Nonstop2h 29m
Chicago O'Hare Intl
Tue 1/13
8:56 am-12:07 pm
Nonstop2h 11m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Sat 12/6
5:07 pm-6:36 pm
Nonstop2h 29m
Chicago O'Hare Intl
Mon 12/8
9:00 am-12:07 pm
Nonstop2h 07m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Wed 12/17
6:55 am-12:03 pm
1 stop6h 08m
Chicago O'Hare Intl
Thu 1/1
5:31 pm-12:27 am
1 stop5h 56m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Wed 12/3
12:37 pm-6:43 pm
1 stop7h 06m
Chicago O'Hare Intl
Sat 12/6
6:45 am-1:19 pm
1 stop5h 34m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Fri 12/5
1:15 pm-2:35 pm
Nonstop2h 20m
Chicago O'Hare Intl
Sun 12/7
9:00 am-12:07 pm
Nonstop2h 07m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Thu 12/4
1:15 pm-2:35 pm
Nonstop2h 20m
Chicago O'Hare Intl
Sun 12/7
9:00 am-12:07 pm
Nonstop2h 07m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Thu 1/15
5:40 am-10:59 am
1 stop6h 19m
Chicago O'Hare Intl
Mon 1/19
5:54 pm-12:23 am
1 stop5h 29m
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Fri 12/12
7:17 pm-12:01 am
1 stop5h 44m
Chicago O'Hare Intl
Mon 12/15
8:55 am-4:32 pm
1 stop6h 37m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
The best time to book flights from Philadelphia to Chicago O'Hare Intl Airport is 84 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, November is the cheapest month in which you can book a flight from Philadelphia to Chicago O'Hare Intl Airport (average of $66). Flying from Philadelphia to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $126). 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 Philadelphia to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 42% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their Philadelphia to Chicago O'Hare Intl Airport flight should consider departing on Wednesday 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.
About 11% of weekly flights between Philadelphia and Chicago have experienced delays in the past year, with the average delay time being 152 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Spirit Airlines have had the lowest number of delays on this route, with no flights being classified as delayed.
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$172 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$185 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$118 | Average$277 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$158 | Average$323 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$168 | Average$309 | FlexibilityNo cancel fee | On-time71% |