Philadelphia to Chicago: buy now or wait?
Cheaper than 95% of what we have seen
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Fare Desk notes
Booking 42-55 days before departure typically costs €78, saving €41 versus last-minute fares. Our data, based on six observations, shows this window consistently yields the lowest typical price for the Philadelphia to Chicago route.
Today's fare of €71 on Frontier Airlines for a 31 October 2026 flight is not a good one by our history. The median fare on this route is €60 and the lowest we have logged is €53, and the current price is only cheaper than 20% of the fares we recorded. October and November both have typical fares of €84 (with 83 and 42 observations respectively), while September is higher at €97 (14 observations). We therefore advise waiting for a better price. Our recommendation aligns with the 'Wait' verdict for today.
Piratefly Fare Desk · prices checked on
All fares Philadelphia → Chicago
Cheapest first. Every price is live and goes straight to booking.
What the history says
Based on 174 prices we recorded on this exact route, compared against every month we have on record.
Best booking window
56–83 days — is when this route has been cheapest to book: €41 typical, on 9 observations. That is about €78 less than booking in the last two weeks.
Cheapest months to fly to Chicago
Hotels in Chicago for these dates
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Other ways into Chicago
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