Fare Guide

Estimated lowest fares found within 7 days

Cheapest Airline Frontier Airlines

The cheapest airline(s) flying from Philadelphia to Chicago is Frontier Airlines.

  • Frontier Airlines Frontier Airlines
  • Spirit Airlines Spirit Airlines
  • JetBlue Airways JetBlue Airways
  • Southwest Airlines Southwest Airlines
  • American Airlines American Airlines
  • United Airlines United Airlines
Cheapest Month February

Travel Period: February 2025 - January 2026

The cheapest month(s) to fly from Philadelphia to Chicago is February.

  • Feb 2025
  • Mar 2025
  • Apr 2025
  • May 2025
  • Jun 2025
  • Jul 2025
  • Aug 2025
  • Sep 2025
  • Oct 2025
  • Nov 2025
  • Dec 2025
  • Jan 2026
Cheapest Day of the Week Friday

The cheapest day(s) of the week to fly from Philadelphia to Chicago is Friday.

  • Sun Sunday
  • Mon Monday
  • Tue Tuesday
  • Wed Wednesday
  • Thu Thursday
  • Fri Friday
  • Sat Saturday
What’s the most popular airline flying from Philadelphia to Chicago?

The most popular airline flying from Philadelphia to Chicago is Frontier Airlines. Find the latest flight deals on Wego.

How far is Chicago from Philadelphia?

The flight distance between Philadelphia and Chicago is 1069km. Check all available flights on Wego.