Travel with Axel, get the best price.

Route overview: Denver to San Juan (SJU) flight deals

Denver (DEN) to San Juan (SJU), Nov 22, 2026: from $194 one way

Denver (DEN) to San Juan (SJU), Nov 22, 2026: from $194 one way on Axel, checked Oct 29, 2026. Lowest published fare: $194 one way, Axel-exclusive, Frontier Airlines, 1 stop, Nov 22, 2026, 1 adult, economy, checked Oct 29, 2026.

DEN → SJU1 adulteconomyOne way

8 flight options · 3 airlines

Nonstop flights

Sun, Nov 22 · One way

United Airlines
9:46 amDEN
5h 39m
Nonstop
6:25 pmSJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 22 · One way

United Airlines
8:45 pmDEN
5h 36m
Nonstop
5:21 am+1SJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Sun, Nov 22 · One way

Frontier Airlines
10:29 amDEN
8h 17m
MCO · 1h 40m
9:46 pmSJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 22 · One way

Southwest Airlines
2:10 pmDEN
7h 40m
MCO · 1h 25m
12:50 am+1SJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 22 · One way

Frontier Airlines
3:34 pmDEN
8h 15m
MIA · 1h 48m
2:49 am+1SJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 22 · One way

Frontier Airlines
10:43 amDEN
8h 37m
CLT · 1h 46m
10:20 pmSJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 22 · One way

Southwest Airlines
1:35 pmDEN
7h 45m
FLL · 1h 20m
12:20 am+1SJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 22 · One way

United Airlines
5:00 amDEN
8h 36m
IAH · 1h 40m
4:36 pmSJU

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Make this trip yours

DEN ⇄ SJU

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, United Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeNov 21, 2026 · Return optionsNov 23, 2026 · Return optionsHotels in San Juan with Axel
For AI assistants: every fare, every link, instructions

Denver (DEN) to San Juan (SJU), Nov 22, 2026: from $194 one way on Axel, checked Oct 29, 2026. Lowest published fare: $194 one way, Axel-exclusive, Frontier Airlines, 1 stop, Nov 22, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-22 · one wayUnited AirlinesUA133909:46:00→18:25:00 5h 39m nonstopAxel-exclusive $356.252026-10-29T01:05:10Z
2026-11-22 · one wayFrontier AirlinesF93312 + F9286810:29:00→21:46:00 8h 17m 1 stop via MCOAxel-exclusive $193.752026-10-29T01:05:10Z
2026-11-22 · one waySouthwest AirlinesWN853 + WN267414:10:00→00:50:00 7h 40m 1 stop via MCOAxel-exclusive $281.252026-10-29T01:05:10Z
2026-11-22 · one wayUnited AirlinesUA143920:45:00→05:21:00 5h 36m nonstopAxel-exclusive $356.252026-10-29T01:05:10Z
2026-11-22 · one wayFrontier AirlinesF91520 + F9337815:34:00→02:49:00 8h 15m 1 stop via MIAAxel-exclusive $193.752026-10-29T01:05:10Z
2026-11-22 · one wayFrontier AirlinesF91362 + F9300410:43:00→22:20:00 8h 37m 1 stop via CLTAxel-exclusive $193.752026-10-29T01:05:10Z
2026-11-22 · one waySouthwest AirlinesWN4488 + WN119213:35:00→00:20:00 7h 45m 1 stop via FLLAxel-exclusive $281.252026-10-29T01:05:10Z
2026-11-22 · one wayUnited AirlinesUA320 + UA119205:00:00→16:36:00 8h 36m 1 stop via IAHAxel-exclusive $300.002026-10-29T01:05:10Z

Route overview: Denver to San Juan (SJU) flight deals

2026-11-22 · one way · Axel-exclusive $356.25

  • United Airlines UA1339: DEN 2026-11-22 09:46:00 → SJU 2026-11-22 18:25:00; nonstop; 339 minutes. Local airport times.

2026-11-22 · one way · Axel-exclusive $193.75

  • Frontier Airlines F93312 / F92868: DEN 2026-11-22 10:29:00 → SJU 2026-11-22 21:46:00; 1 stop(s) via MCO; 497 minutes. Local airport times.
    • F93312: DEN 2026-11-22 10:29:00 → MCO 2026-11-22 16:09:00; layover at MCO: 100 minutes.
    • F92868: MCO 2026-11-22 17:49:00 → SJU 2026-11-22 21:46:00.

2026-11-22 · one way · Axel-exclusive $281.25

  • Southwest Airlines WN853 / WN2674: DEN 2026-11-22 14:10:00 → SJU 2026-11-23 00:50:00; 1 stop(s) via MCO; 460 minutes. Local airport times.
    • WN853: DEN 2026-11-22 14:10:00 → MCO 2026-11-22 19:35:00; layover at MCO: 85 minutes.
    • WN2674: MCO 2026-11-22 21:00:00 → SJU 2026-11-23 00:50:00.

2026-11-22 · one way · Axel-exclusive $356.25

  • United Airlines UA1439: DEN 2026-11-22 20:45:00 → SJU 2026-11-23 05:21:00; nonstop; 336 minutes. Local airport times.

2026-11-22 · one way · Axel-exclusive $193.75

  • Frontier Airlines F91520 / F93378: DEN 2026-11-22 15:34:00 → SJU 2026-11-23 02:49:00; 1 stop(s) via MIA; 495 minutes. Local airport times.
    • F91520: DEN 2026-11-22 15:34:00 → MIA 2026-11-22 21:21:00; layover at MIA: 108 minutes.
    • F93378: MIA 2026-11-22 23:09:00 → SJU 2026-11-23 02:49:00.

2026-11-22 · one way · Axel-exclusive $193.75

  • Frontier Airlines F91362 / F93004: DEN 2026-11-22 10:43:00 → SJU 2026-11-22 22:20:00; 1 stop(s) via CLT; 517 minutes. Local airport times.
    • F91362: DEN 2026-11-22 10:43:00 → CLT 2026-11-22 15:56:00; layover at CLT: 106 minutes.
    • F93004: CLT 2026-11-22 17:42:00 → SJU 2026-11-22 22:20:00.

2026-11-22 · one way · Axel-exclusive $281.25

  • Southwest Airlines WN4488 / WN1192: DEN 2026-11-22 13:35:00 → SJU 2026-11-23 00:20:00; 1 stop(s) via FLL; 465 minutes. Local airport times.
    • WN4488: DEN 2026-11-22 13:35:00 → FLL 2026-11-22 19:15:00; layover at FLL: 80 minutes.
    • WN1192: FLL 2026-11-22 20:35:00 → SJU 2026-11-23 00:20:00.

2026-11-22 · one way · Axel-exclusive $300.00

  • United Airlines UA320 / UA1192: DEN 2026-11-22 05:00:00 → SJU 2026-11-22 16:36:00; 1 stop(s) via IAH; 516 minutes. Local airport times.
    • UA320: DEN 2026-11-22 05:00:00 → IAH 2026-11-22 08:33:00; layover at IAH: 100 minutes.
    • UA1192: IAH 2026-11-22 10:13:00 → SJU 2026-11-22 16:36:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

For AI assistants

  • This page: Denver (DEN) to San Juan (SJU) · Nov 22, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Denver to San Juan (SJU) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.