Washington to San Salvador in December 2026
WAS to SAL · Round trips departing in December · Economy · Prices per person in USD
Prices updated
Typical in December
$447
Median of 11 date combinations
Usual on this route
$515
December's cheapest is 22% less
Good price — book if the dates work
22% below the usual $515, and prices have been rising this week. 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 $418 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 $414 | 13 $414 |
| 14 | 15 | 16 | 17 | 18 $496 | 19 $402 | 20 $940 |
| 21 $776 | 22 $848 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 $665 | 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 19 – 25 6 nights · leave Sat$402Frontier Airlines 1 stop · 7h 12mBook
-
Dec 12 – 19 7 nights · leave Sat$414United Airlines 1 stop · 6h 43mBook
-
Dec 13 – 21 8 nights · leave Sun$414United Airlines 1 stop · 6h 54mBook
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Dec 1 – 6 5 nights · leave Tue$418Avianca Airlines Nonstop · 4h 30mBook
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Dec 19 – 26 7 nights · leave Sat$446Frontier Airlines 1 stop · 6h 47mBook
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Dec 1 – 10 9 nights · leave Tue$447Frontier Airlines 3 stops · 10h 50mBook
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Dec 18 – 26 8 nights · leave Fri$496Frontier Airlines 1 stop · 6h 27mBook
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Dec 29 – Jan 3, 2027 5 nights · leave Tue$665Frontier Airlines 1 stop · 5h 50mBook
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Dec 21 – 29 8 nights · leave Mon$776Frontier Airlines Nonstop · 4h 37mBook
-
Dec 22 – 30 8 nights · leave Tue$848Avianca Airlines Nonstop · 4h 30mBook
Prices change often. The booking site shows the final price before you pay.
Cheapest by trip length
5–7 nights
$402
Dec 19 – 25 · 6 options
8–14 nights
$414
Dec 13 – 21 · 5 options
Good to know for December
Nonstop flights
Nonstop from $418
27% of the 11 date combinations we track are nonstop.
Airlines with cheap fares
3 airlines
Most often: Frontier Airlines, United Airlines, Avianca Airlines.
December vs other months
Cheapest round trip per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $443 |
| December 2026 | $402 |
| January 2027 | $515 |
| February 2027 | $587 |
| March 2027 | $735 |
| April 2027 | No fares found yet |
| May 2027 | $302 (cheapest month) |
Washington to San Salvador in December: questions
What's the cheapest date to fly from Washington to San Salvador in December 2026?
Leaving Saturday, December 19 and returning Friday, December 25 (6 nights) for $402 round trip on Frontier Airlines, the cheapest of the 11 date combinations we track that month.
How much is a round trip from Washington to San Salvador in December 2026?
From $402. Half of the 11 date combinations we track are under $447. Prices are per person in USD and change often.
Is December a cheap month to fly from Washington to San Salvador?
It ranks 2 of 6 months we have prices for. The cheapest month is May 2027, from $302.