San Juan to Denver flights

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Airlines seen: Frontier Airlines, JetBlue, Southwest Airlines
Typical journey time: 17h 48m

Lowest observed

€129

Average observed

€283

Cheapest month

December 2026

Last checked

7 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €101

Lowest observed

13 Nov 2026

Frontier Airlines · 1 stop · One way

Cheapest observed day · Last checked: 9 Sep 2026

Departure

15:59

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Short answer

We have seen Frontier Airlines fares from San Juan to Denver. The average across the fares we caught is €283. December 2026 is the cheapest month in our observations, at €129. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.

Short answer

About this route

Explore the fares we observed from San Juan to Denver. Prices move often, so pick your dates to see the latest options.

Route distance: 4,406 km
Typical journey time: 17h 48m
Airlines seen: Frontier Airlines, JetBlue, Southwest Airlines
Seen on fares with a connection: Frontier Airlines, JetBlue
Alternative airports: SIG, APA

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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How our prices work

Frequently asked

When is the cheapest month to fly from San Juan to Denver?

In our observations December 2026 is the cheapest month so far, at €129.

Are there direct flights from San Juan to Denver?

Our data holds no non-stop flight from San Juan to Denver. The fares on this page include at least one stop.

Which airlines fly from San Juan to Denver?

These are the carriers we have seen on the route: Frontier Airlines, JetBlue, Southwest Airlines.

How long does the flight from San Juan to Denver take?

The average journey time across the 66 fares we observed is 18h 16m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed San Juan to Denver fares were non-stop?

None of the 71 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide