To save up to 5% on this flight, we recommend booking at least 17 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Fairbanks to Costa Rica from $393 1-2 weeks out and tickets from $422 for flights departing within the next 72 hours.
Flights from Fairbanks to Costa Rica lean towards being more expensive in December. Prices are generally better when you fly from Fairbanks to Costa Rica in October, with the cheapest ticket starting at $205.