Chicago to Philadelphia in December 2026
CHI to PHL · Round trips departing in December · Economy · Prices per person in USD
Prices updated
Typical in December
$221
Median of 6 date combinations
Usual on this route
$194
December's cheapest is 8% less
Typical price — worth watching
8% below the usual $194, and prices have been falling this week. Based on 44 days of prices.
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December 2026 by departure day
Cheapest round trip leaving that day| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 $192 | 15 $179 | 16 | 17 | 18 | 19 $195 | 20 $273 |
| 21 $246 | 22 | 23 | 24 | 25 | 26 | 27 $342 |
| 28 | 29 | 30 | 31 |
Empty days: no round trip found for that departure date yet. Green = cheapest third of the month.
Cheapest dates in December 2026
Round trip, per person-
Dec 15 – 20 5 nights · leave Tue$179Frontier Airlines 1 stop · 4h 38mBook
-
Dec 14 – 20 6 nights · leave Mon$192Frontier Airlines Nonstop · 2h 15mBook
-
Dec 19 – 22 3 nights · leave Sat$195Frontier Airlines Nonstop · 2h 13mBook
-
Dec 21 – 25 4 nights · leave Mon$246Frontier Airlines 1 stop · 2h 15mBook
-
Dec 20 – 24 4 nights · leave Sun$273Frontier Airlines 1 stop · 2h 19mBook
-
Dec 27 – Jan 3, 2027 7 nights · leave Sun$342Frontier Airlines 1 stop · 2h 19mBook
Prices change often. The booking site shows the final price before you pay.
Cheapest by trip length
2–4 nights
$195
Dec 19 – 22 · 3 options
5–7 nights
$179
Dec 15 – 20 · 3 options
Good to know for December
Airline
Frontier Airlines
Every cheap fare we track on this route is on Frontier Airlines.
Chicago to Philadelphia in December: questions
What's the cheapest date to fly from Chicago to Philadelphia in December 2026?
Leaving Tuesday, December 15 and returning Sunday, December 20 (5 nights) for $179 round trip on Frontier Airlines, the cheapest of the 6 date combinations we track that month.
How much is a round trip from Chicago to Philadelphia in December 2026?
From $179. Half of the 6 date combinations we track are under $221. Prices are per person in USD and change often.