Travel with Axel,
get the best price.

San Juan → Houston

Dec 21, 2026 · return Jan 4, 2027

SJU → IAH1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Mon, Jan 4

United Airlines
3:46 pmSJU
5h 10m
Nonstop
6:56 pmIAH
United Airlines
3:05 pmIAH
4h 19m
Nonstop
9:24 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

United Airlines
7:40 amSJU
5h 6m
Nonstop
10:46 amIAH
United Airlines
3:05 pmIAH
4h 19m
Nonstop
9:24 pmSJU

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
9:48 pmSJU
5h 10m
Nonstop
12:58 am+1IAH
Frontier Airlines
11:57 amIAH
7h 52m
TPA · 2h 37m
9:49 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

American Airlines
1:20 amSJU
8h 59m
DFW · 2h 19m
8:19 amIAH
American Airlines
8:12 amIAH
7h 35m
CLT · 1h 28m
5:47 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Copa Airlines
5:29 amSJU
8h 46m
PTY · 1h 26m
12:15 pmIAH
United Airlines
3:05 pmIAH
4h 19m
Nonstop
9:24 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
3:55 amSJU
8h 17m
MCO · 2h 15m
10:12 amIAH
Frontier Airlines
11:57 amIAH
7h 52m
TPA · 2h 37m
9:49 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
8:45 amSJU
7h 59m
FLL · 2h 5m
2:44 pmIAH
Frontier Airlines
11:57 amIAH
7h 52m
TPA · 2h 37m
9:49 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

American Airlines
3:53 pmSJU
9h
CLT · 2h 14m
10:53 pmIAH
American Airlines
8:12 amIAH
7h 35m
CLT · 1h 28m
5:47 pmSJU

Round-trip total · 1 adult · Taxes included

Make this trip yours

SJU ⇄ IAH

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

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 → 2027-01-04United AirlinesUA668 / UA701$638.002026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF91339 / F92562 + F93980$355.252026-10-29T01:23:44Z
2026-12-21 → 2027-01-04American AirlinesAA549 + AA3967 / AA2765 + AA539$551.002026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Copa Airlines / United AirlinesCM451 + UA1249 / UA701$732.252026-10-29T01:23:44Z
2026-12-21 → 2027-01-04United AirlinesUA1644 / UA701$638.002026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF91823 + F92029 / F92562 + F93980$377.002026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF93017 + F91495 / F92562 + F93980$377.002026-10-29T01:23:44Z
2026-12-21 → 2027-01-04American AirlinesAA2150 + AA565 / AA2765 + AA539$551.002026-10-29T01:23:44Z

2026-12-21 → 2027-01-04 · $638.00

  • United Airlines UA668: SJU 2026-12-21 15:46:00 → IAH 2026-12-21 18:56:00; nonstop; 310 minutes. Local airport times.
  • United Airlines UA701: IAH 2027-01-04 15:05:00 → SJU 2027-01-04 21:24:00; nonstop; 259 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $355.25

  • Frontier Airlines F91339: SJU 2026-12-21 21:48:00 → IAH 2026-12-22 00:58:00; nonstop; 310 minutes. Local airport times.
  • Frontier Airlines F92562 / F93980: IAH 2027-01-04 11:57:00 → SJU 2027-01-04 21:49:00; 1 stop(s) via TPA; 472 minutes. Local airport times.
    • F92562: IAH 2027-01-04 11:57:00 → TPA 2027-01-04 15:09:00; layover at TPA: 157 minutes.
    • F93980: TPA 2027-01-04 17:46:00 → SJU 2027-01-04 21:49:00.

2026-12-21 → 2027-01-04 · $551.00

  • American Airlines AA549 / AA3967: SJU 2026-12-21 01:20:00 → IAH 2026-12-21 08:19:00; 1 stop(s) via DFW; 539 minutes. Local airport times.
    • AA549: SJU 2026-12-21 01:20:00 → DFW 2026-12-21 04:41:00; layover at DFW: 139 minutes.
    • AA3967: DFW 2026-12-21 07:00:00 → IAH 2026-12-21 08:19:00.
  • American Airlines AA2765 / AA539: IAH 2027-01-04 08:12:00 → SJU 2027-01-04 17:47:00; 1 stop(s) via CLT; 455 minutes. Local airport times.
    • AA2765: IAH 2027-01-04 08:12:00 → CLT 2027-01-04 11:40:00; layover at CLT: 88 minutes.
    • AA539: CLT 2027-01-04 13:08:00 → SJU 2027-01-04 17:47:00.

2026-12-21 → 2027-01-04 · $732.25

  • Copa Airlines CM451 / UA1249: SJU 2026-12-21 05:29:00 → IAH 2026-12-21 12:15:00; 1 stop(s) via PTY; 526 minutes. Local airport times.
    • CM451: SJU 2026-12-21 05:29:00 → PTY 2026-12-21 07:29:00; layover at PTY: 86 minutes.
    • UA1249: PTY 2026-12-21 08:55:00 → IAH 2026-12-21 12:15:00.
  • United Airlines UA701: IAH 2027-01-04 15:05:00 → SJU 2027-01-04 21:24:00; nonstop; 259 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $638.00

  • United Airlines UA1644: SJU 2026-12-21 07:40:00 → IAH 2026-12-21 10:46:00; nonstop; 306 minutes. Local airport times.
  • United Airlines UA701: IAH 2027-01-04 15:05:00 → SJU 2027-01-04 21:24:00; nonstop; 259 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $377.00

  • Frontier Airlines F91823 / F92029: SJU 2026-12-21 03:55:00 → IAH 2026-12-21 10:12:00; 1 stop(s) via MCO; 497 minutes. Local airport times.
    • F91823: SJU 2026-12-21 03:55:00 → MCO 2026-12-21 06:00:00; layover at MCO: 135 minutes.
    • F92029: MCO 2026-12-21 08:15:00 → IAH 2026-12-21 10:12:00.
  • Frontier Airlines F92562 / F93980: IAH 2027-01-04 11:57:00 → SJU 2027-01-04 21:49:00; 1 stop(s) via TPA; 472 minutes. Local airport times.
    • F92562: IAH 2027-01-04 11:57:00 → TPA 2027-01-04 15:09:00; layover at TPA: 157 minutes.
    • F93980: TPA 2027-01-04 17:46:00 → SJU 2027-01-04 21:49:00.

2026-12-21 → 2027-01-04 · $377.00

  • Frontier Airlines F93017 / F91495: SJU 2026-12-21 08:45:00 → IAH 2026-12-21 14:44:00; 1 stop(s) via FLL; 479 minutes. Local airport times.
    • F93017: SJU 2026-12-21 08:45:00 → FLL 2026-12-21 10:39:00; layover at FLL: 125 minutes.
    • F91495: FLL 2026-12-21 12:44:00 → IAH 2026-12-21 14:44:00.
  • Frontier Airlines F92562 / F93980: IAH 2027-01-04 11:57:00 → SJU 2027-01-04 21:49:00; 1 stop(s) via TPA; 472 minutes. Local airport times.
    • F92562: IAH 2027-01-04 11:57:00 → TPA 2027-01-04 15:09:00; layover at TPA: 157 minutes.
    • F93980: TPA 2027-01-04 17:46:00 → SJU 2027-01-04 21:49:00.

2026-12-21 → 2027-01-04 · $551.00

  • American Airlines AA2150 / AA565: SJU 2026-12-21 15:53:00 → IAH 2026-12-21 22:53:00; 1 stop(s) via CLT; 540 minutes. Local airport times.
    • AA2150: SJU 2026-12-21 15:53:00 → CLT 2026-12-21 18:53:00; layover at CLT: 134 minutes.
    • AA565: CLT 2026-12-21 21:07:00 → IAH 2026-12-21 22:53:00.
  • American Airlines AA2765 / AA539: IAH 2027-01-04 08:12:00 → SJU 2027-01-04 17:47:00; 1 stop(s) via CLT; 455 minutes. Local airport times.
    • AA2765: IAH 2027-01-04 08:12:00 → CLT 2027-01-04 11:40:00; layover at CLT: 88 minutes.
    • AA539: CLT 2027-01-04 13:08:00 → SJU 2027-01-04 17:47:00.

More dates for this route