Travel with Axel,
get the best price.

Denver → Houston

Dec 11, 2026 · return Dec 18, 2026

DEN → IAH1 adulteconomyRound trip

10 flight options · 3 airlines

Nonstop flights

Fri, Dec 11 – Fri, Dec 18

Frontier Airlines
8:59 pmDEN
2h 23m
Nonstop
12:22 am+1IAH
Frontier Airlines
6:26 amIAH
2h 39m
Nonstop
8:05 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
8:53 pmDEN
2h 22m
Nonstop
12:15 am+1IAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

Frontier Airlines
7:47 amDEN
2h 30m
Nonstop
11:17 amIAH
Frontier Airlines
6:26 amIAH
2h 39m
Nonstop
8:05 amDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
7:44 amDEN
2h 25m
Nonstop
11:09 amIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Dec 11 – Fri, Dec 18

VB
2:40 pmDEN
5h 20m
MTY · 1h 15m
9:00 pmIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
9:46 amDEN
5h 37m
XNA · 1h 42m
4:23 pmIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
9:35 amDEN
4h 53m
SAT · 1h 31m
3:28 pmIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
8:05 amDEN
6h 10m
ABQ · 2h 20m
3:15 pmIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
1:55 pmDEN
5h 31m
STL · 1h 2m
8:26 pmIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Fri, Dec 11 – Fri, Dec 18

United Airlines
1:45 pmDEN
5h 30m
AUS · 2h 9m
8:15 pmIAH
United Airlines
12:50 pmIAH
2h 35m
Nonstop
2:25 pmDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ 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, Frontier 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)
2026-12-11 → 2026-12-18Frontier AirlinesF92996 / F93229$155.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA2419 / UA2168$295.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18VB / United AirlinesVB721 + VB616 / UA2168$325.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18Frontier AirlinesF93206 / F93229$155.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA1720 / UA2168$295.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA5267 + UA4007 / UA2168$290.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA1521 + UA6246 / UA2168$290.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA5487 + UA6151 / UA2168$290.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA1639 + UA4045 / UA2168$290.002026-10-29T01:03:58Z
2026-12-11 → 2026-12-18United AirlinesUA2270 + UA1871 / UA2168$290.002026-10-29T01:03:58Z

2026-12-11 → 2026-12-18 · $155.00

  • Frontier Airlines F92996: DEN 2026-12-11 20:59:00 → IAH 2026-12-12 00:22:00; nonstop; 143 minutes. Local airport times.
  • Frontier Airlines F93229: IAH 2026-12-18 06:26:00 → DEN 2026-12-18 08:05:00; nonstop; 159 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $295.00

  • United Airlines UA2419: DEN 2026-12-11 20:53:00 → IAH 2026-12-12 00:15:00; nonstop; 142 minutes. Local airport times.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $325.00

  • VB VB721 / VB616: DEN 2026-12-11 14:40:00 → IAH 2026-12-11 21:00:00; 1 stop(s) via MTY; 320 minutes. Local airport times.
    • VB721: DEN 2026-12-11 14:40:00 → MTY 2026-12-11 18:15:00; layover at MTY: 75 minutes.
    • VB616: MTY 2026-12-11 19:30:00 → IAH 2026-12-11 21:00:00.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $155.00

  • Frontier Airlines F93206: DEN 2026-12-11 07:47:00 → IAH 2026-12-11 11:17:00; nonstop; 150 minutes. Local airport times.
  • Frontier Airlines F93229: IAH 2026-12-18 06:26:00 → DEN 2026-12-18 08:05:00; nonstop; 159 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $295.00

  • United Airlines UA1720: DEN 2026-12-11 07:44:00 → IAH 2026-12-11 11:09:00; nonstop; 145 minutes. Local airport times.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $290.00

  • United Airlines UA5267 / UA4007: DEN 2026-12-11 09:46:00 → IAH 2026-12-11 16:23:00; 1 stop(s) via XNA; 337 minutes. Local airport times.
    • UA5267: DEN 2026-12-11 09:46:00 → XNA 2026-12-11 12:45:00; layover at XNA: 102 minutes.
    • UA4007: XNA 2026-12-11 14:27:00 → IAH 2026-12-11 16:23:00.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $290.00

  • United Airlines UA1521 / UA6246: DEN 2026-12-11 09:35:00 → IAH 2026-12-11 15:28:00; 1 stop(s) via SAT; 293 minutes. Local airport times.
    • UA1521: DEN 2026-12-11 09:35:00 → SAT 2026-12-11 12:48:00; layover at SAT: 91 minutes.
    • UA6246: SAT 2026-12-11 14:19:00 → IAH 2026-12-11 15:28:00.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $290.00

  • United Airlines UA5487 / UA6151: DEN 2026-12-11 08:05:00 → IAH 2026-12-11 15:15:00; 1 stop(s) via ABQ; 370 minutes. Local airport times.
    • UA5487: DEN 2026-12-11 08:05:00 → ABQ 2026-12-11 09:41:00; layover at ABQ: 140 minutes.
    • UA6151: ABQ 2026-12-11 12:01:00 → IAH 2026-12-11 15:15:00.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $290.00

  • United Airlines UA1639 / UA4045: DEN 2026-12-11 13:55:00 → IAH 2026-12-11 20:26:00; 1 stop(s) via STL; 331 minutes. Local airport times.
    • UA1639: DEN 2026-12-11 13:55:00 → STL 2026-12-11 16:57:00; layover at STL: 62 minutes.
    • UA4045: STL 2026-12-11 17:59:00 → IAH 2026-12-11 20:26:00.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

2026-12-11 → 2026-12-18 · $290.00

  • United Airlines UA2270 / UA1871: DEN 2026-12-11 13:45:00 → IAH 2026-12-11 20:15:00; 1 stop(s) via AUS; 330 minutes. Local airport times.
    • UA2270: DEN 2026-12-11 13:45:00 → AUS 2026-12-11 16:58:00; layover at AUS: 129 minutes.
    • UA1871: AUS 2026-12-11 19:07:00 → IAH 2026-12-11 20:15:00.
  • United Airlines UA2168: IAH 2026-12-18 12:50:00 → DEN 2026-12-18 14:25:00; nonstop; 155 minutes. Local airport times.

More dates for this route