Cheap Flights from Denver, CO to San Juan from $102

Return flight: San Juan – Denver

On Cheapflightsplus.com you will find 1 direct and 180 connecting flights from Denver to San Juan. You can compare airfare deals from 7 airlines and multiple travel sites from $102, book and save on cheap plane tickets and last minute offers. Also check out DEN-SJU flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Denver to San Juan Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $102 (one-way), $175 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Denver to San Juan. 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 Arrival Flight Details Flight Duration Price
09:50 — 17:30
09:50 — 17:30 UA1339 United Airlines
Denver — San Juan
5h 40m
Find flight
from$282
00:23 — 18:38
18:10 — 23:57 F91734 Frontier Airlines
Denver — Orlando
9h 30m stop
17:14 — 21:08 F93506 Frontier Airlines
Orlando — San Juan
16h 15m
including layover
Find flight
from$203
00:59 — 14:15
00:59 — 06:10 F93294 Frontier Airlines
Denver — Atlanta
4h 34m stop
11:36 — 15:15 F92082 Frontier Airlines
Atlanta — San Juan
11h 16m
including layover
Find flight
from$102
05:10 — 20:38
05:00 — 08:29 UA320 United Airlines
Denver — Houston
6h 28m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
13h 28m
including layover
Find flight
from$178
06:01 — 21:24
06:00 — 11:26 UA471 United Airlines
Denver — Washington D.C.
6h 1m stop
17:28 — 21:24 UA2025 United Airlines
Washington D.C. — San Juan
13h 23m
including layover
Find flight
from$205
07:46 — 23:57
+1 day
07:45 — 13:29 UA1536 United Airlines
Denver — Newark
6h 25m stop
19:53 — 23:57 UA1543 United Airlines
Newark — San Juan
14h 11m
including layover
Find flight
from$256
09:47 — 02:34
+1 day
09:08 — 14:53 F93312 Frontier Airlines
Denver — Orlando
8h 8m stop
23:40 — 02:32 F94726 Frontier Airlines
Orlando — San Juan
14h 47m
including layover
Find flight
from$103
10:21 — 15:16
+1 day
10:14 — 13:11 SY652 Sun Country Airlines
Denver — Minneapolis
19h 42m stop
09:00 — 15:16 SY783 Sun Country Airlines
Minneapolis — San Juan
26h 55m
including layover
Find flight
from$170
11:05 — 00:40
+1 day
11:00 — 16:17 F92440 Frontier Airlines
Denver — Raleigh
4h 42m stop
15:48 — 20:18 F91226 Frontier Airlines
Raleigh — San Juan
11h 35m
including layover
Find flight
from$116
11:39 — 20:38
+1 day
11:39 — 15:11 UA738 United Airlines
Denver — Houston
23h 51m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
30h 59m
including layover
Find flight
from$189
13:38 — 00:44
+1 day
13:38 — 18:43 F91918 Frontier Airlines
Denver — Cleveland
1h 40m stop
20:31 — 00:44 F93140 Frontier Airlines
Cleveland — San Juan
9h 6m
including layover
Find flight
from$113
13:49 — 20:38
+1 day
13:49 — 17:15 UA1829 United Airlines
Denver — Houston
21h 47m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
28h 49m
including layover
Find flight
from$189
14:45 — 14:44
+1 day
14:45 — 18:26 UA1023 United Airlines
Denver — Chicago
14h 27m stop
08:52 — 14:44 UA1996 United Airlines
Chicago — San Juan
21h 59m
including layover
Find flight
from$242
15:40 — 20:38
+1 day
15:38 — 19:10 UA489 United Airlines
Denver — Houston
19h 56m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
26h 58m
including layover
Find flight
from$183
15:40 — 15:42
+1 day
15:40 — 19:07 UA489 United Airlines
Denver — Houston
15h stop
10:07 — 15:42 UA1192 United Airlines
Houston — San Juan
22h 2m
including layover
Find flight
from$198
16:46 — 20:38
+1 day
16:46 — 20:13 UA2851 United Airlines
Denver — Houston
18h 50m stop
15:03 — 20:38 UA701 United Airlines
Houston — San Juan
25h 52m
including layover
Find flight
from$183
17:45 — 20:38
+1 day
17:45 — 21:14 UA2619 United Airlines
Denver — Houston
17h 48m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
24h 53m
including layover
Find flight
from$189
18:00 — 15:16
+1 day
18:00 — 21:01 SY1610 Sun Country Airlines
Denver — Minneapolis
11h 59m stop
09:00 — 15:16 SY783 Sun Country Airlines
Minneapolis — San Juan
19h 16m
including layover
Find flight
from$170
18:38 — 20:38
+1 day
18:38 — 22:02 UA1299 United Airlines
Denver — Houston
17h 1m stop
15:03 — 20:38 UA701 United Airlines
Houston — San Juan
24h
including layover
Find flight
from$181
19:45 — 20:38
+1 day
19:05 — 22:33 UA475 United Airlines
Denver — Houston
15h 53m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
22h 53m
including layover
Find flight
from$181
19:45 — 15:42
+1 day
19:05 — 22:29 UA475 United Airlines
Denver — Houston
10h 57m stop
10:07 — 15:42 UA1192 United Airlines
Houston — San Juan
17h 57m
including layover
Find flight
from$193
20:31 — 20:38
+1 day
20:27 — 23:55 UA2419 United Airlines
Denver — Houston
15h 8m stop
15:02 — 20:38 UA701 United Airlines
Houston — San Juan
22h 7m
including layover
Find flight
from$181
20:31 — 05:30
+2 days
20:31 — 23:59 UA2419 United Airlines
Denver — Houston
23h 58m stop
23:57 — 05:30 UA1497 United Airlines
Houston — San Juan
30h 59m
including layover
Find flight
from$189
23:58 — 00:27
+2 days
23:58 — 05:28 F91114 Frontier Airlines
Denver — Tampa
15h 46m stop
21:17 — 00:27 F93980 Frontier Airlines
Tampa — San Juan
22h 29m
including layover
Find flight
from$108
23:59 — 15:37
+1 day
23:58 — 05:33 F91114 Frontier Airlines
Denver — Tampa
7h stop
12:40 — 15:39 F92216 Frontier Airlines
Tampa — San Juan
13h 38m
including layover
Find flight
from$102
06:15 — 22:27
+1 day
06:15 — 09:12 SY1610 Sun Country Airlines
Denver — Minneapolis
22h 48m stop
08:00 — 11:23 SY193 Sun Country Airlines
Minneapolis — Baltimore
7h 22m stop
18:45 — 22:27 NK2533 Spirit Airlines
Baltimore — San Juan
38h 12m
including layover
Find flight
from$207
08:00 — 19:19
+1 day
08:00 — 12:42 G4411 Allegiant Air
Denver — Covington
22h 39m stop
11:21 — 13:50 G42156 Allegiant Air
Covington — Miami
2h 55m stop
16:45 — 19:19 NK2221 Spirit Airlines
Miami — San Juan
33h 19m
including layover
Find flight
from$154
08:06 — 19:19
+1 day
08:06 — 13:05 G4234 Allegiant Air
Denver — Fletcher
8h 27m stop
21:32 — 23:27 G4497 Allegiant Air
Fletcher — Miami
17h 18m stop
16:45 — 19:19 NK2221 Spirit Airlines
Miami — San Juan
33h 13m
including layover
Find flight
from$194
16:05 — 19:19
+1 day
16:05 — 21:00 G4226 Allegiant Air
Denver — Fletcher
13h 31m stop
10:31 — 12:26 G42126 Allegiant Air
Fletcher — Miami
4h 19m stop
16:45 — 19:19 NK2221 Spirit Airlines
Miami — San Juan
25h 14m
including layover
Find flight
from$196
17:41 — 22:27
+1 day
17:41 — 20:42 SY656 Sun Country Airlines
Denver — Minneapolis
11h 42m stop
08:24 — 11:43 SY223 Sun Country Airlines
Minneapolis — Baltimore
7h 2m stop
18:45 — 22:27 NK2533 Spirit Airlines
Baltimore — San Juan
26h 46m
including layover
Find flight
from$198
*Departure and arrival times - local. Updated on June 6, 2025

Flight Information

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

Distance between Denver and San Juan is 4396 miles. Time difference between the cities is 3h. Airplanes depart 00:23 to 23:59 from 2 Denver airports and arrive 00:23 to 23:59 to 2 San Juan airports. Average flight time is 5h 40m.

  • The fastest flight 5h 40m
  • Average flight time 5h 40m
  • The earliest flight 00:23
  • The latest flight 23:59
  • Distance 2732 ml

The cheapest months to travel to San Juan are february (from 130 $), june (from 130 $), september (from 137 $).

The most expensive months are november (from 565 $), december (from 389 $), october (from 238 $).

What is the lowest airfare Denver to San Juan?

The cheapest plane ticket found by our users is $102. This airfare is for economy class on one-way F93294 flight by Frontier Airlines for September 27, 2025 which leaves Denver International in Denver at 00:59 am and arrives at San Juan Luis Munoz Marin Intl at 14:15.

Economy class
$102
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Business class
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First class
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Popular Airlines on the Route

The flight Denver — San Juan is served by 7 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 3 departures per week at the price of from $ 555 . And the most expensive tickets are offered by Aer Lingus airline - from $ 1196.

Direct flights

There are 1 nonstop flights on the route. The fastest direct flight is UA1339 by United Airlines takes 5h 40m and the cheapest is F93294 by Frontier Airlines for $282.

  • UA - United Airlines
    from $282
    Find
See more direct flights

Connecting Flights

There are 180 flights with layovers on the route. The fastest connecting flight is F93138 by Frontier Airlines takes 7h 37m and the cheapest is F93294 by Frontier Airlines for $102.

  • AS - Alaska Airlines
    from $555
    Find
  • F9 - Frontier Airlines
    from $102
    Find
  • EI - Aer Lingus
    from $1196
    Find
  • SY - Sun Country Airlines
    from $170
    Find
  • Y4 - Volaris
    from $342
    Find
  • UA - United Airlines
    from $178
    Find
  • G4 - Allegiant Air
    from $154
    Find
See more connecting flights

Airports

You can fly from Denver to San Juan from 2 airports (Denver International, Arapahoe Co).

Denver airports

  • Denver International-DEN
    from $102
    Find
  • Arapahoe Co-APA
    Find

San Juan airports

  • Isla Grande-SIG
    Find
  • Luis Munoz Marin Intl-SJU
    Find

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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