Cheap flights from Boston to Guanacaste

Direct flight: 3,804 km, ~4h 29m from Boston (BOS) to Guanacaste (LIR).

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Live fares · BOS → LIR

Frequently asked questions

  • How long is the flight from Boston to Guanacaste?

    Direct flights from BOS to LIR cover approximately 3,804 km (2,364 miles), with an estimated flight time of 4h 29m. Operating airlines: B6, DL.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.

Full route page: BOS → LIR Cheapest month to fly to Guanacaste All flights from Boston All flights to Guanacaste Flights to Costa Rica Visa-free with USA passport B6 routes DL routes