−62%Verified fare
PHX → San Francisco
United States · Frontier · Nonstop
$38 round trip
Usually ~$100 · Feb 2027
Feb 13 → Feb 20 · hotels from ~$178/nightSee it on Google Flights →
There is no nonstop from Phoenix to Costa Rica. One stop takes about 8 to 9 hours, often through Houston Hobby.
| From | Phoenix Sky Harbor (PHX) |
|---|---|
| To | San José (SJO) and Liberia (LIR) |
| Nonstop airlines | None. You need one stop. |
| Flight time | No nonstop. One stop takes about 8 to 9 hours, often through Houston Hobby. |
| Cheapest month | November (median about $489 round trip) |
| Most expensive | August and December |
| Typical round trip | SJO $456 to $675; Liberia about $486 to $720 |
November has been the cheapest month to fly to San José (median around $489 round trip) and October the cheapest to Liberia (around $482). August and December are the most expensive to San José.
For San José, booking about 24 weeks out has saved around 15%. For Liberia, about 4 weeks out has saved around 30%.
Those are typical prices. Our daily scan looks for fares well below them: when one shows up from PHX, it appears at the top of this page and goes out by email.
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No. One stop takes about 8 to 9 hours, often through Houston Hobby.
No nonstop. One stop takes about 8 to 9 hours, often through Houston Hobby.
November has been the cheapest month to fly to San José (median around $489 round trip) and October the cheapest to Liberia (around $482). August and December are the most expensive to San José.
For San José, booking about 24 weeks out has saved around 15%. For Liberia, about 4 weeks out has saved around 30%.
Be flexible on dates, compare the nearby airports listed above, and watch for fare drops. Our free newsletter checks fares from PHX every morning and only sends fares at least 20% below the typical price for that route and dates.
Prices are round-trip medians over the past 12 months from KAYAK route data, checked October 2026. Nonstop airlines from Phoenix Sky Harbor and airline schedules as of October 2026. Fares and schedules change, so confirm before you book.