Cheap flights from Philadelphia to Northern Illinois

View AU$135 flight on Mon, 29 Sep. 2025Opens in a new window

Popular airlines from Philadelphia to Northern Illinois

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Philadelphia (ILG) to Northern Illinois (CHI)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 4 Sep. - Thu, 25 Sep.
PHL
Philadelphia
ORD
Chicago
AU$242 Return, found 6 days ago
AU$242
Return
found 6 days ago
Select American Airlines flight, departing Thu, 4 Sep. from Philadelphia to Chicago, returning Thu, 25 Sep., priced at AU$242 found 6 days ago
American Airlines
Fri, 12 Sep. - Mon, 15 Sep.
PHL
Philadelphia
ORD
Chicago
AU$270 Return, found 1 day ago
AU$270
Return
found 1 day ago
Select American Airlines flight, departing Fri, 12 Sep. from Philadelphia to Chicago, returning Mon, 15 Sep., priced at AU$270 found 1 day ago
American Airlines
Tue, 30 Sep. - Thu, 2 Oct.
PHL
Philadelphia
ORD
Chicago
AU$271 Return, found 1 hour ago
AU$271
Return
found 1 hour ago
Select American Airlines flight, departing Tue, 30 Sep. from Philadelphia to Chicago, returning Thu, 2 Oct., priced at AU$271 found 1 hour ago
American Airlines
Thu, 4 Sep. - Thu, 25 Sep.
PHL
Philadelphia
ORD
Chicago
AU$296 Return, found 6 days ago
AU$296
Return
found 6 days ago
Select American Airlines flight, departing Thu, 4 Sep. from Philadelphia to Chicago, returning Thu, 25 Sep., priced at AU$296 found 6 days ago
Delta
Thu, 4 Sep. - Thu, 25 Sep.
PHL
Philadelphia
ORD
Chicago
AU$302 Return, found 6 days ago
AU$302
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Sep. from Philadelphia to Chicago, returning Thu, 25 Sep., priced at AU$302 found 6 days ago
United
Thu, 4 Sep. - Thu, 25 Sep.
PHL
Philadelphia
ORD
Chicago
AU$350 Return, found 6 days ago
AU$350
Return
found 6 days ago
Select United flight, departing Thu, 4 Sep. from Philadelphia to Chicago, returning Thu, 25 Sep., priced at AU$350 found 6 days ago

Find the cheapest month to fly from Philadelphia (PHL) to Moline (MLI)

February is typically the cheapest month to fly

From AU$305 - AU$903 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.