San Juan, United States to Denver, CO flights from $95
Flights starting at $95. Choose between Frontier Airlines, Spirit Airlines, or United Airlines to find the best price.
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Tips to know when travelling to Denver
Cheapest one-way trip | $95 |
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Cheapest round-trip | $242 |
Average round-trip | $432 |
Includes rare itinerary | Travel hack |
Most popular airline | Frontier Airlines |
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Check-in for a flight from San Juan to Denver
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
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Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
JetBlue Airways | JBU | B6 | Yes | Opens 24 days before flight Closes 2 hours before flight |
Delta Air Lines | DAL | DL | Yes | Opens 24 days before flight Closes 1 hours before flight |
United States COVID-19 travel restrictions

Most travelers from Puerto Rico can enter Denver, DEN, but there are restrictions.
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
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