UA - BWI/IAD-UVF - $$1 OW - Business

It's generally cheaper to fly American from Washington Area to St Lucia, but if you're set on flying Star Alliance December 12 is the cheapest date and has an interesting routing . BWI-UVF via IAH and ORD - $639 USD one-way - 4688 Miles at 13.6 cents per mile Spoiler IAD-UVF - $683 USD one-way Spoiler Pricing for the first-half of the schedule flying Star Alliance