Los Angeles to Philadelphia in December 2026
LAX to PHL · Round trips departing in December · Economy · Prices per person in USD
Prices updated
Typical in December
$346
Median of 5 date combinations
Usual on this route
$343
December's cheapest is 1% less
Typical price — worth watching
About the usual $343, and prices have been rising this week. Based on 42 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 $450 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 $340 | 30 $340 | 31 $346 |
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 29 – Jan 5, 2027 7 nights · leave Tue$340Frontier Airlines 3 stops · 6h 11mBook
-
Dec 30 – Jan 6, 2027 7 nights · leave Wed$340Frontier Airlines 2 stops · 6h 09mBook
-
Dec 31 – Jan 6, 2027 6 nights · leave Thu$346Frontier Airlines 3 stops · 7h 44mBook
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Dec 30 – Jan 5, 2027 6 nights · leave Wed$373Frontier Airlines 3 stops · 6h 00mBook
-
Dec 1 – 4 3 nights · leave Tue$450Frontier Airlines 1 stop · 6h 27mBook
Prices change often. The booking site shows the final price before you pay.
Cheapest by trip length
2–4 nights
$450
Dec 1 – 4 · 1 option
5–7 nights
$340
Dec 29 – Jan 5, 2027 · 4 options
Good to know for December
Airline
Frontier Airlines
Every cheap fare we track on this route is on Frontier Airlines.
December vs other months
Cheapest round trip per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $393 |
| December 2026 | $340 |
| January 2027 | No fares found yet |
| February 2027 | No fares found yet |
| March 2027 | $238 (cheapest month) |
Los Angeles to Philadelphia in December: questions
What's the cheapest date to fly from Los Angeles to Philadelphia in December 2026?
Leaving Tuesday, December 29 and returning Tuesday, January 5 (7 nights) for $340 round trip on Frontier Airlines, the cheapest of the 5 date combinations we track that month.
How much is a round trip from Los Angeles to Philadelphia in December 2026?
From $340. Half of the 5 date combinations we track are under $346. Prices are per person in USD and change often.