Flights to La Asuncion from Boston - $113

View $113 flight on Tue, Aug 12, 2025Opens in a new window

Popular airlines from Boston to La Asuncion

  • JetBlue Airways

    JetBlue Airways

  • Avianca

    Avianca

  • Spirit Airlines

    Spirit Airlines

  • United

    United

  • Copa

    Copa

  • American Airlines

    American Airlines

  • Delta

    Delta

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Cheap Flights from Boston to La Asuncion (BOS-SJO)

Prices were available within the past 7 days and start at $113 for one-way flights and $248 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Aug 19 - Wed, Sep 10
BOS
Boston
SJO
San José
$248 Roundtrip, found 3 days ago
$248
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Tue, Aug 19 from Boston to San José, returning Wed, Sep 10, priced at $248 found 3 days ago
American Airlines
Sun, Aug 31 - Wed, Sep 10
PVD
Providence
SJO
San José
$280 Roundtrip, found 4 hours ago
$280
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sun, Aug 31 from Providence to San José, returning Wed, Sep 10, priced at $280 found 4 hours ago
Delta
Mon, Aug 25 - Tue, Dec 16
ORH
Worcester
SJO
San José
$300 Roundtrip, found 4 days ago
$300
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Aug 25 from Worcester to San José, returning Tue, Dec 16, priced at $300 found 4 days ago
Southwest Airlines
Wed, Sep 17 - Tue, Sep 23
PVD
Providence
SJO
San José
$314 Roundtrip, found 12 hours ago
$314
Roundtrip
found 12 hours ago
Select Southwest Airlines flight, departing Wed, Sep 17 from Providence to San José, returning Tue, Sep 23, priced at $314 found 12 hours ago
United
Tue, Jan 27 - Tue, Feb 10
PVD
Providence
SJO
San José
$318 Roundtrip, found 2 days ago
$318
Roundtrip
found 2 days ago
Select United flight, departing Tue, Jan 27 from Providence to San José, returning Tue, Feb 10, priced at $318 found 2 days ago
Copa
Tue, Sep 30 - Thu, Oct 2
BOS
Boston
SJO
San José
$320 Roundtrip, just found
$320
Roundtrip
just found
Select Copa flight, departing Tue, Sep 30 from Boston to San José, returning Thu, Oct 2, priced at $320 just found

Find the cheapest month to fly from Boston (BOS) to San José (SJO)

February is typically the cheapest month to fly

From $236 - $541 per traveler.

Graph displaying average flight prices per month

Alternative airports

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Juan Santamaria Intl. SJO. Cheapest option available. Flights from $380
SJO
Juan Santamaria Intl.
Cheapest
Flights from $380
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