$129+ Cheap flights from Denver (DEN) to San Juan
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SJU
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Find cheap flights from Denver to San Juan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Denver Intl to San Juan are usually found in April or September, booked 87 days in advance, depart on a Tuesday or Monday and return on a Thursday
Cheap flight deals from Denver to San Juan
Cheapest
Best
Last-minute
One-way
Cheapest flights from Denver to San JuanExplore the most affordable flight options available from Denver to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from Denver to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:56 am
DEN
- SJU
2 stops28h 41m
Frontier
Wed 11/115:39 pm
SJU
- DEN
1 stop8h 20m
Frontier
Deal found 7/22![Frontier logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:05 am
DEN
- SJU
1 stop15h 19m
Frontier
Thu 8/275:15 pm
SJU
- DEN
2 stops42h 04m
Frontier
Deal found 7/21![Frontier logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Sun 8/303:10 am
SJU
- DEN
2 stops12h 51m
Frontier
Deal found 7/21![Frontier logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:59 pm
DEN
- SJU
1 stop13h 20m
Frontier
Sat 9/194:39 pm
SJU
- DEN
1 stop8h 20m
Frontier
Deal found 7/22![Frontier logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:05 pm
DEN
- SJU
1 stop11h 39m
Frontier
Sun 8/168:37 pm
SJU
- DEN
1 stop13h 30m
Frontier
Deal found 7/19![Frontier logo]()
$385
This Frontier deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:12 pm
DEN
- SJU
1 stop9h 03m
Frontier
Wed 8/2612:11 pm
SJU
- DEN
1 stop12h 49m
Frontier
Deal found 7/23![Frontier logo]()
$386
This Trip.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Sat 8/228:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/18![Frontier logo]()
$387
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:40 am
DEN
- SJU
2 stops12h 50m
Southwest
Wed 10/285:50 am
SJU
- DEN
2 stops12h 40m
Southwest
Deal found 7/20![Southwest logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am
DEN
- SJU
2 stops17h 20m
Frontier
Wed 11/115:39 pm
SJU
- DEN
1 stop8h 20m
Frontier
Deal found 7/22![Frontier logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:00 am
DEN
- SJU
1 stop16h 41m
Frontier
Sat 8/155:15 pm
SJU
- DEN
1 stop17h 48m
Frontier
Deal found 7/20![Frontier logo]()
$390
This Frontier deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Thu 8/278:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/19![Frontier logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Thu 8/278:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/19![Frontier logo]()
$392
Best flights from Denver to San JuanDiscover carefully curated flight deals from Denver to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from Denver to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:55 pm
DEN
- SJU
1 stop7h 30m
Southwest
Mon 8/248:55 pm
SJU
- DEN
1 stop14h 45m
Southwest
Deal found 7/23![Southwest logo]()
$406
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3011:52 pm
DEN
- SJU
1 stop17h 40m
Frontier
Mon 8/36:45 am
SJU
- DEN
2 stops28h 18m
Frontier
Deal found 7/18![Frontier logo]()
$527
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:46 am
DEN
- SJU
Nonstop5h 52m
United Airlines
Fri 10/307:05 am
SJU
- DEN
1 stop9h 43m
United Airlines
Deal found 7/22![United Airlines logo]()
$582
This Southwest deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:25 am
DEN
- SJU
1 stop8h 45m
Southwest
Tue 8/255:15 am
SJU
- DEN
1 stop8h 20m
Southwest
Deal found 7/19![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/611:15 am
DEN
- SJU
2 stops9h 55m
Southwest
Sun 9/205:00 am
SJU
- DEN
2 stops10h 35m
Southwest
Deal found 7/18![Southwest logo]()
$453
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/259:46 am
DEN
- SJU
Nonstop5h 52m
United Airlines
Mon 9/287:00 am
SJU
- DEN
1 stop15h 08m
United Airlines
Deal found 7/21![United Airlines logo]()
$712
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:30 pm
DEN
- SJU
2 stops9h 20m
Southwest
Mon 9/76:00 am
SJU
- DEN
2 stops9h 05m
Southwest
Deal found 7/22![Southwest logo]()
$593
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:15 am
DEN
- SJU
2 stops9h 50m
Southwest
Sun 8/166:35 am
SJU
- DEN
2 stops12h 15m
Southwest
Deal found 7/21![Southwest logo]()
$636
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:05 am
DEN
- SJU
2 stops10h 55m
Southwest
Tue 8/116:00 am
SJU
- DEN
2 stops10h 50m
Southwest
Deal found 7/18![Southwest logo]()
$670
Last-minute flights from Denver to San JuanDiscover last-minute flight deals from Denver to San Juan. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to San Juan. Data last updated July 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:23 pm
DEN
- SJU
1 stop9h 39m
Frontier
Wed 8/126:00 am
SJU
- DEN
2 stops16h 03m
Frontier
Deal found 7/22![Frontier logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:05 am
DEN
- SJU
1 stop15h 19m
Frontier
Thu 8/275:15 pm
SJU
- DEN
2 stops42h 04m
Frontier
Deal found 7/21![Frontier logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:00 am
DEN
- SJU
1 stop16h 41m
Frontier
Sat 8/155:15 pm
SJU
- DEN
1 stop17h 48m
Frontier
Deal found 7/20![Frontier logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:05 pm
DEN
- SJU
1 stop11h 39m
Frontier
Sun 8/168:37 pm
SJU
- DEN
1 stop13h 30m
Frontier
Deal found 7/19![Frontier logo]()
$385
This Trip.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Sat 8/228:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/18![Frontier logo]()
$387
This Frontier deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:12 pm
DEN
- SJU
1 stop9h 03m
Frontier
Wed 8/2612:11 pm
SJU
- DEN
1 stop12h 49m
Frontier
Deal found 7/23![Frontier logo]()
$386
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:10 am
DEN
- SJU
2 stops10h 55m
Southwest
Wed 8/266:00 am
SJU
- DEN
2 stops10h 50m
Southwest
Deal found 7/22![Southwest logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Thu 8/279:16 am
SJU
- DEN
1 stop8h 02m
Frontier
Deal found 7/19![Frontier logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Thu 8/278:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/19![Frontier logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Sun 8/303:10 am
SJU
- DEN
2 stops12h 51m
Frontier
Deal found 7/21![Frontier logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:43 am
DEN
- SJU
2 stops12h 13m
Frontier
Sun 8/308:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/21![Frontier logo]()
$383
This Frontier deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:59 pm
DEN
- SJU
1 stop12h 17m
Frontier
Thu 8/278:57 pm
SJU
- DEN
1 stop12h 36m
Frontier
Deal found 7/19![Frontier logo]()
$391
One-way flights from Denver to San JuanSearch for one-way flight options from Denver to San Juan. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from Denver to San Juan. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:30 am
DEN
- SJU
2 stops15h 27m
Frontier
Deal found 7/22![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:30 am
DEN
- SJU
2 stops16h 11m
Frontier
Deal found 7/18![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:30 am
DEN
- SJU
2 stops40h 26m
Frontier
Deal found 7/19![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:22 am
DEN
- SJU
2 stops46h 22m
Frontier
Deal found 7/21![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:00 am
DEN
- SJU
2 stops39h 28m
Frontier
Deal found 7/23![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3011:59 pm
DEN
- SJU
2 stops22h 57m
Frontier
Deal found 7/20![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:59 pm
DEN
- SJU
2 stops22h 57m
Frontier
Deal found 7/21![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:30 am
DEN
- SJU
2 stops16h 04m
Frontier
Deal found 7/21![Frontier logo]()
$172
Find flight deals from Denver to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.
Round-trip from | $381 (Kiwi.com) |
|---|---|
One-way from | $129 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $572 |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
Use the filters below to find and compare flights from Denver to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Fri 8/21
11:55 pm-9:25 am
1 stop7h 30m
San Juan Luis Munoz Marin Intl
Mon 8/24
8:55 pm-9:40 am
1 stop14h 45m
$406
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Tue 8/18
7:25 am-6:10 pm
1 stop8h 45m
San Juan Luis Munoz Marin Intl
Tue 8/25
5:15 am-11:35 am
1 stop8h 20m
$423
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Sun 9/6
11:15 am-11:10 pm
2 stops9h 55m
San Juan Luis Munoz Marin Intl
Sun 9/20
5:00 am-1:35 pm
2 stops10h 35m
$453
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Thu 7/30
11:52 pm-7:32 pm
1 stop17h 40m
San Juan Luis Munoz Marin Intl
Mon 8/3
6:45 am-9:03 am
2 stops28h 18m
$527
Quickest round-trip
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Tue 10/20
9:46 am-5:38 pm
Nonstop5h 52m
San Juan Luis Munoz Marin Intl
Fri 10/30
7:05 am-2:48 pm
1 stop9h 43m
$582
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Fri 9/4
12:30 pm-11:50 pm
2 stops9h 20m
San Juan Luis Munoz Marin Intl
Mon 9/7
6:00 am-1:05 pm
2 stops9h 05m
$593
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Sat 8/8
6:15 am-6:05 pm
2 stops9h 50m
San Juan Luis Munoz Marin Intl
Sun 8/16
6:35 am-4:50 pm
2 stops12h 15m
$636
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Wed 8/5
9:05 am-10:00 pm
2 stops10h 55m
San Juan Luis Munoz Marin Intl
Tue 8/11
6:00 am-2:50 pm
2 stops10h 50m
$670
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Fri 9/25
9:46 am-5:38 pm
Nonstop5h 52m
San Juan Luis Munoz Marin Intl
Mon 9/28
7:00 am-8:08 pm
1 stop15h 08m
$712
Cheapest one-way
DenverSan Juan
DEN - SJU
DENSJU
Denver Intl
Sat 8/15
6:30 am-12:41 am
2 stops16h 11m
$133
Showing 1-10 of 17 resultsSorted by cheapest first
Best time to book a flight from Denver to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Denver with our price prediction graph.
DEN-PR1
DEN-SJU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Denver to San Juan
DEN-PR1
DEN-SJU
What is the cheapest month to book a flight from Denver to San Juan?
Currently, April is the cheapest month in which you can book a flight from Denver to San Juan (average of $438). Flying from Denver to San Juan in December is currently the most expensive (average of $675). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from DEN to SJU?
Find hourly flight availability from Denver to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 24, 2026.
When flying from Denver to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Denver to San Juan
Explore weekly flight availability from Denver to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 24, 2026.
The most flights from DEN to PR1 are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Denver to San Juan?
Airfare is typical for this route at the moment.
Denver to San Juan flights typically cost between $378 and $648 in November.The cheapest round-trip price found within the last 5 days was $380 on Frontier (Nov 5-Nov 11).
How far ahead should I book a flight from Denver to San Juan?
The best time to book flights from Denver to San Juan is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated July 24, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican Airlines from Denver to San Juan. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Related info for your journey
Find useful and relevant information for your journey from Denver to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Denver and San Juan flights
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Top 6 airlines flying from Denver to San Juan
Discover the top 6 airlines that operate flights from Denver to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$185 | Average$372 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$272 | Average$443 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$353 | Average$718 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$388 | Average$539 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$485 | Average$635 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$489 | Average$692 | FlexibilityNo cancel fee | On-time69% |