Flights to La Asuncion from Washington - ￥19,510

View ￥19,510 flight on Fri, Aug 1, 2025Opens in a new window

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Cheap Flights from Washington to La Asuncion (WAS-SJO)

Prices were available within the past 7 days and start at ￥19,510 for one-way flights and ￥48,190 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Sun, Jan 4 - Sat, Jan 10
IAD
Washington
SJO
San José
￥48,190 Roundtrip, found 1 day ago
￥48,190
Roundtrip
found 1 day ago
Select avianca flight, departing Sun, Jan 4 from Washington to San José, returning Sat, Jan 10, priced at ￥48,190 found 1 day ago
United
Sun, Jan 4 - Mon, Jan 12
IAD
Washington
SJO
San José
￥49,920 Roundtrip, found 1 day ago
￥49,920
Roundtrip
found 1 day ago
Select United flight, departing Sun, Jan 4 from Washington to San José, returning Mon, Jan 12, priced at ￥49,920 found 1 day ago
avianca
Sun, Jan 4 - Sat, Jan 10
IAD
Washington
SJO
San José
￥50,670 Roundtrip, found 1 day ago
￥50,670
Roundtrip
found 1 day ago
Select avianca flight, departing Sun, Jan 4 from Washington to San José, returning Sat, Jan 10, priced at ￥50,670 found 1 day ago
Copa
Sun, Jan 4 - Mon, Jan 12
IAD
Washington
SJO
San José
￥51,910 Roundtrip, found 1 day ago
￥51,910
Roundtrip
found 1 day ago
Select Copa flight, departing Sun, Jan 4 from Washington to San José, returning Mon, Jan 12, priced at ￥51,910 found 1 day ago
Delta
Sun, Jan 4 - Sat, Jan 10
BWI
Baltimore
SJO
San José
￥73,890 Roundtrip, found 1 day ago
￥73,890
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Jan 4 from Baltimore to San José, returning Sat, Jan 10, priced at ￥73,890 found 1 day ago
American Airlines
Sun, Jan 4 - Sat, Jan 10
BWI
Baltimore
SJO
San José
￥82,090 Roundtrip, found 1 day ago
￥82,090
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Jan 4 from Baltimore to San José, returning Sat, Jan 10, priced at ￥82,090 found 1 day ago

Find the cheapest month to fly from Washington (WAS) to San José (SJO)

September is typically the cheapest month to fly

From ￥31,600 - ￥48,426 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.