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Route Price Intelligence

Cheap Flights From Seattle to St. Lucia

Live pricing benchmarks, monthly patterns, and historical lows for this route.

⭐ Great DealFound 3d ago
$509

Escape to St. Lucia for $509 - 44% below normal pricing. Rare direct Caribbean access from the Pacific Northwest!

21 date combinations found at this price

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Typical Price
$787
Deals From
$660
Usually Costs
$660$914
Lowest We've Seen
$484
Based on 4,031 price pointshigh confidence

Monthly Price Guide

Jan
$559
Feb
$660
Mar
$1,369
Apr
$830
May
$840
Jun
$878
Jul
$914
Aug
$694
Sep
$660
Oct
$673
Nov
$795
Dec
$924
Cheapest Average Expensive

Best Time to Fly from Seattle to St. Lucia

The cheapest time to fly from Seattle to St. Lucia is typically January, when fares average around $559. The most expensive month tends to be March at around $1,369. For the best deals, consider flying in January, February, September.

Cheapest Fare Found (Last 90 Days)

The lowest round-trip price available on each day we checked

$484$514$543$573$602Feb 5Mar 12Apr 19
Best: $48468 price checksWorst: $602
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