Seattle to Los Angeles in December 2026
SEA to LAX · Round trips departing in December · Economy · Prices per person in USD
Prices updated
Typical in December
$201
Median of 7 date combinations
Usual on this route
$190
December's cheapest is 41% less
Good price — book if the dates work
41% below the usual $190. Based on 47 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 $224 | 3 $427 | 4 $377 | 5 | 6 | |
| 7 $129 | 8 | 9 | 10 $113 | 11 $163 | 12 | 13 $201 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 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 10 – 14 4 nights · leave Thu$113Frontier Airlines Nonstop · 2h 42mBook
-
Dec 7 – 10 3 nights · leave Mon$129Frontier Airlines Nonstop · 2h 42mBook
-
Dec 11 – 15 4 nights · leave Fri$163Frontier Airlines 1 stop · 2h 42mBook
-
Dec 13 – 17 4 nights · leave Sun$201Southwest Airlines Nonstop · 5h 05mBook
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Dec 2 – 12 10 nights · leave Wed$224Alaska Airlines 1 stop · 3h 56mBook
-
Dec 4 – 14 10 nights · leave Fri$377United Airlines 1 stop · 3h 34mBook
-
Dec 3 – 13 10 nights · leave Thu$427Alaska Airlines Nonstop · 2h 43mBook
Prices change often. The booking site shows the final price before you pay.
Cheapest by trip length
2–4 nights
$113
Dec 10 – 14 · 4 options
8–14 nights
$224
Dec 2 – 12 · 3 options
Good to know for December
Airlines with cheap fares
4 airlines
Most often: Frontier Airlines, Alaska Airlines, Southwest Airlines.
December vs other months
Cheapest round trip per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $232 |
| December 2026 | $113 (cheapest month) |
| January 2027 | $239 |
Seattle to Los Angeles in December: questions
What's the cheapest date to fly from Seattle to Los Angeles in December 2026?
Leaving Thursday, December 10 and returning Monday, December 14 (4 nights) for $113 round trip on Frontier Airlines, the cheapest of the 7 date combinations we track that month.
How much is a round trip from Seattle to Los Angeles in December 2026?
From $113. Half of the 7 date combinations we track are under $201. Prices are per person in USD and change often.