Cheap Flights from San Juan to Denver, CO from $135

Return flight: Denver – San Juan

On Cheapflightsplus.com you will find 1 direct and 160 connecting flights from San Juan to Denver. You can compare airfare deals from 7 airlines and multiple travel sites from $135, book and save on cheap plane tickets and last minute offers. Also check out SJU-DEN flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from San Juan to Denver depends on and how to choose the most interesting flight option for you.

Distance between San Juan and Denver is 4396 miles. Time difference between the cities is 3h. Airplanes depart 01:05 to 23:59 from 2 San Juan airports and arrive 01:05 to 23:59 to 2 Denver airports. Average flight time is 6h 10m.

  • The fastest flight 6h 10m
  • Average flight time 6h 10m
  • The earliest flight 01:05
  • The latest flight 23:59
  • Distance 2732 ml

The cheapest months to travel to Denver are september (from 135 $), october (from 136 $), july (from 136 $).

The most expensive months are february (from 431 $), january (from 212 $), december (from 182 $).

What is the lowest airfare San Juan to Denver?

The cheapest plane ticket found by our users is $135. This airfare is for economy class on one-way F91015 flight by Frontier Airlines for September 27, 2025 which leaves Luis Munoz Marin Intl in San Juan at 01:11 am and arrives at Denver Denver International at 08:35.

Economy class
$135
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Business class
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First class
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Flight Schedule San Juan to Denver (Colorado)

01:11 — 08:35
9h 24m flight time
Find flight
from$135
12:58 — 16:08 San Juan — Philadelphia
F91015 Frontier Airlines
1h 10m stop
20:38 — 22:56 Philadelphia — Denver
F93339 Frontier Airlines
03:34 — 18:41
17h 7m flight time
Find flight
from$193
03:34 — 06:39 San Juan — Orlando
F91823 Frontier Airlines
9h 56m stop
06:00 — 08:02 Orlando — Denver
F91733 Frontier Airlines
03:40 — 23:11
21h 31m flight time
Find flight
from$201
03:40 — 06:40 San Juan — Orlando
F91823 Frontier Airlines
14h 19m stop
20:59 — 23:11 Orlando — Denver
F93311 Frontier Airlines
08:15 — 19:31
13h 16m flight time
Find flight
from$153
07:55 — 11:56 San Juan — Baltimore
F92265 Frontier Airlines
5h 10m stop
17:26 — 19:31 Baltimore — Denver
F92705 Frontier Airlines
12:02 — 23:16
13h 14m flight time
Find flight
from$136
10:04 — 13:11 San Juan — Orlando
F92249 Frontier Airlines
5h 43m stop
20:59 — 23:11 Orlando — Denver
F93311 Frontier Airlines
14:00 — 18:10
6h 10m flight time
Find flight
from$372
San Juan — Denver
UA1368 United Airlines
16:54 — 19:17+1day
28h 23m flight time
Find flight
from$141
16:40 — 20:16 San Juan — Raleigh
F91225 Frontier Airlines
20h 53m stop
17:23 — 19:17 Raleigh — Denver
F92225 Frontier Airlines
17:00 — 23:11
8h 11m flight time
Find flight
from$182
18:55 — 21:18 San Juan — Orlando
F94725 Frontier Airlines
43m stop
20:57 — 23:14 Orlando — Denver
F93311 Frontier Airlines
17:15 — 08:21+1day
17h 6m flight time
Find flight
from$153
17:15 — 20:04 San Juan — Miami
F92283 Frontier Airlines
9h 56m stop
06:00 — 08:21 Miami — Denver
F91279 Frontier Airlines
17:43 — 23:56
8h 13m flight time
Find flight
from$136
17:43 — 20:50 San Juan — Tampa
F92215 Frontier Airlines
1h stop
21:50 — 23:56 Tampa — Denver
F92745 Frontier Airlines
17:43 — 08:56+1day
17h 13m flight time
Find flight
from$136
17:43 — 20:50 San Juan — Tampa
F92215 Frontier Airlines
10h 10m stop
10:20 — 12:19 Tampa — Denver
F91113 Frontier Airlines
17:43 — 17:17+1day
25h 34m flight time
Find flight
from$141
17:43 — 20:50 San Juan — Tampa
F92215 Frontier Airlines
18h 17m stop
15:15 — 17:17 Tampa — Denver
F93517 Frontier Airlines
21:30 — 08:02+1day
12h 32m flight time
Find flight
from$169
19:16 — 21:43 San Juan — Orlando
F91745 Frontier Airlines
5h 22m stop
06:20 — 08:44 Orlando — Denver
F91733 Frontier Airlines
21:30 — 23:11+1day
27h 41m flight time
Find flight
from$175
19:16 — 21:43 San Juan — Orlando
F91745 Frontier Airlines
20h 21m stop
21:14 — 23:40 Orlando — Denver
F93311 Frontier Airlines
21:44 — 08:28+1day
12h 44m flight time
Find flight
from$136
21:44 — 01:45 San Juan — Philadelphia
F93247 Frontier Airlines
4h 33m stop
06:15 — 08:28 Philadelphia — Denver
F93339 Frontier Airlines
Full flight schedule will help you in detecting at what time planes fly from San Juan to Denver. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on November 23, 2025.

Popular Airlines on the Route

The flight San Juan — Denver is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 20 departures per week at the price of from $ 135 . And the most expensive tickets are offered by Avianca airline - from $ 712.

Direct flights

There are 1 nonstop flights on the route. The fastest direct flight is UA1368 by United Airlines takes 6h 10m and the cheapest is F91015 by Frontier Airlines for $372.

  • UA - United Airlines
    from $372
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Connecting Flights

There are 160 flights with layovers on the route. The fastest connecting flight is F94725 by Frontier Airlines takes 8h 11m and the cheapest is F91015 by Frontier Airlines for $135.

  • F9 - Frontier Airlines
    from $135
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  • AV - Avianca
    from $379
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  • SY - Sun Country Airlines
    from $220
    Find
  • DM - Aero-Charter
    from $586
    Find
  • W1 - W1
    from $639
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  • UA - United Airlines
    from $306
    Find
  • NK - Spirit Airlines
    from $251
    Find
See more connecting flights

Airports

You can fly from San Juan to Denver from 2 airports (Isla Grande, Luis Munoz Marin Intl).

San Juan airports

  • Isla Grande-SIG
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  • Luis Munoz Marin Intl-SJU
    from $135
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Denver airports

  • Denver International-DEN
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  • Arapahoe Co-APA
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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