Travel with Axel,
get the best price.

Route overview: Houston to Denver (DEN) flight deals

Houston → Denver

Jun 29, 2027 · choose your return date

IAH → DEN1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

June 2027

Jun 29, 2027 · One wayFrontier AirlinesNonstop$85.00 Jun 29, 2027 · One wayAmerican AirlinesUp to 1 stop each way$185.00 Jun 29, 2027 – Jun 30, 2027 · 1 nightFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jun 30, 2027 · 1 nightAmerican Airlines / United AirlinesUp to 1 stop each way$347.50 Jun 29, 2027 – Jul 1, 2027 · 2 nightsFrontier AirlinesNonstop$172.00 Jun 29, 2027 – Jul 1, 2027 · 2 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$373.75 Jun 29, 2027 – Jul 2, 2027 · 3 nightsFrontier AirlinesNonstop$172.00 Jun 29, 2027 – Jul 2, 2027 · 3 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$373.75 Jun 29, 2027 – Jul 3, 2027 · 4 nightsFrontier AirlinesNonstop$172.00 Jun 29, 2027 – Jul 3, 2027 · 4 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$373.75 Jun 29, 2027 – Jul 4, 2027 · 5 nightsFrontier AirlinesNonstop$172.00 Jun 29, 2027 – Jul 4, 2027 · 5 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$373.75 Jun 29, 2027 – Jul 5, 2027 · 6 nightsFrontier AirlinesNonstop$172.00 Jun 29, 2027 – Jul 5, 2027 · 6 nightsAmerican Airlines / Frontier AirlinesUp to 1 stop each way$264.50 Jun 29, 2027 – Jul 6, 2027 · 7 nightsFrontier AirlinesNonstop$172.00 Jun 29, 2027 – Jul 6, 2027 · 7 nightsAmerican Airlines / Frontier AirlinesUp to 1 stop each way$264.50 Jun 29, 2027 – Jul 7, 2027 · 8 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 7, 2027 · 8 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$347.50 Jun 29, 2027 – Jul 8, 2027 · 9 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 8, 2027 · 9 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$347.50 Jun 29, 2027 – Jul 9, 2027 · 10 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 9, 2027 · 10 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$347.50 Jun 29, 2027 – Jul 10, 2027 · 11 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 10, 2027 · 11 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$347.50 Jun 29, 2027 – Jul 11, 2027 · 12 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 11, 2027 · 12 nightsAmerican Airlines / United AirlinesUp to 1 stop each way$347.50 Jun 29, 2027 – Jul 12, 2027 · 13 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 12, 2027 · 13 nightsAmerican Airlines / Frontier AirlinesUp to 1 stop each way$252.50 Jun 29, 2027 – Jul 13, 2027 · 14 nightsFrontier AirlinesNonstop$160.00 Jun 29, 2027 – Jul 13, 2027 · 14 nightsAmerican Airlines / Frontier AirlinesUp to 1 stop each way$252.50

Flights for your trip

  1. Tue, Jun 29 · One way

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN

    One-way total · 1 adult · Taxes included

  2. Tue, Jun 29 · One way

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN

    One-way total · 1 adult · Taxes included

  3. Tue, Jun 29 – Wed, Jun 30

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    7:47 amDEN
    2h 30m
    Nonstop
    11:17 amIAH

    Round-trip total · 1 adult · Taxes included

  4. Tue, Jun 29 – Wed, Jun 30

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  5. Tue, Jun 29 – Thu, Jul 1

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    5:36 amDEN
    2h 38m
    Nonstop
    9:14 amIAH

    Round-trip total · 1 adult · Taxes included

  6. Tue, Jun 29 – Thu, Jul 1

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    7:30 pmDEN
    2h 22m
    Nonstop
    10:52 pmIAH

    Round-trip total · 1 adult · Taxes included

  7. Tue, Jun 29 – Fri, Jul 2

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    8:59 pmDEN
    2h 23m
    Nonstop
    12:22 am+1IAH

    Round-trip total · 1 adult · Taxes included

  8. Tue, Jun 29 – Fri, Jul 2

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  9. Tue, Jun 29 – Sat, Jul 3

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    8:59 pmDEN
    2h 23m
    Nonstop
    12:22 am+1IAH

    Round-trip total · 1 adult · Taxes included

  10. Tue, Jun 29 – Sat, Jul 3

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  11. Tue, Jun 29 – Mon, Jul 5

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

  12. Tue, Jun 29 – Mon, Jul 5

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

  13. Tue, Jun 29 – Tue, Jul 6

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

  14. Tue, Jun 29 – Tue, Jul 6

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

  15. Tue, Jun 29 – Wed, Jul 7

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    7:47 amDEN
    2h 30m
    Nonstop
    11:17 amIAH

    Round-trip total · 1 adult · Taxes included

  16. Tue, Jun 29 – Wed, Jul 7

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  17. Tue, Jun 29 – Fri, Jul 9

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    8:59 pmDEN
    2h 23m
    Nonstop
    12:22 am+1IAH

    Round-trip total · 1 adult · Taxes included

  18. Tue, Jun 29 – Fri, Jul 9

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  19. Tue, Jun 29 – Sat, Jul 10

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    8:59 pmDEN
    2h 23m
    Nonstop
    12:22 am+1IAH

    Round-trip total · 1 adult · Taxes included

  20. Tue, Jun 29 – Sat, Jul 10

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  21. Tue, Jun 29 – Sun, Jul 11

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

  22. Tue, Jun 29 – Sun, Jul 11

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    United Airlines
    8:53 pmDEN
    2h 22m
    Nonstop
    12:15 am+1IAH

    Round-trip total · 1 adult · Taxes included

  23. Tue, Jun 29 – Tue, Jul 13

    Frontier Airlines
    6:00 amIAH
    2h 39m
    Nonstop
    7:39 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

  24. Tue, Jun 29 – Tue, Jul 13

    American Airlines
    6:00 amIAH
    4h 49m
    DFW · 1h 1m
    9:49 amDEN
    Frontier Airlines
    9:18 pmDEN
    2h 24m
    Nonstop
    12:42 am+1IAH

    Round-trip total · 1 adult · Taxes included

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

IAH ⇄ DEN

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

Explore this route

All dates for this routeJun 28, 2027 · Return optionsJun 30, 2027 · Return optionsHotels in Denver with Axel
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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-06-29 · one wayFrontier AirlinesF93229Axel-exclusive $85.002026-10-29T01:10:09Z
2027-06-29 · one wayAmerican AirlinesAA2551 + AA2357Axel-exclusive $185.002026-10-29T01:10:09Z
2027-06-29 → 2027-06-30Frontier AirlinesF93229 / F93206Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-06-30American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $347.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-01Frontier AirlinesF93229 / F93206Axel-exclusive $172.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-01American Airlines / United AirlinesAA2551 + AA2357 / UA475Axel-exclusive $373.752026-10-29T01:10:09Z
2027-06-29 → 2027-07-02Frontier AirlinesF93229 / F92996Axel-exclusive $172.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-02American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $373.752026-10-29T01:10:09Z
2027-06-29 → 2027-07-03Frontier AirlinesF93229 / F92996Axel-exclusive $172.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-03American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $373.752026-10-29T01:10:09Z
2027-06-29 → 2027-07-04Frontier AirlinesF93229 / F92996Axel-exclusive $172.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-04American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $373.752026-10-29T01:10:09Z
2027-06-29 → 2027-07-05Frontier AirlinesF93229 / F92996Axel-exclusive $172.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-05American Airlines / Frontier AirlinesAA2551 + AA2357 / F92996Axel-exclusive $264.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-06Frontier AirlinesF93229 / F92996Axel-exclusive $172.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-06American Airlines / Frontier AirlinesAA2551 + AA2357 / F92996Axel-exclusive $264.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-07Frontier AirlinesF93229 / F93206Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-07American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $347.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-08Frontier AirlinesF93229 / F93206Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-08American Airlines / United AirlinesAA2551 + AA2357 / UA475Axel-exclusive $347.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-09Frontier AirlinesF93229 / F92996Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-09American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $347.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-10Frontier AirlinesF93229 / F92996Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-10American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $347.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-11Frontier AirlinesF93229 / F92996Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-11American Airlines / United AirlinesAA2551 + AA2357 / UA2419Axel-exclusive $347.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-12Frontier AirlinesF93229 / F92996Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-12American Airlines / Frontier AirlinesAA2551 + AA2357 / F92996Axel-exclusive $252.502026-10-29T01:10:09Z
2027-06-29 → 2027-07-13Frontier AirlinesF93229 / F92996Axel-exclusive $160.002026-10-29T01:10:09Z
2027-06-29 → 2027-07-13American Airlines / Frontier AirlinesAA2551 + AA2357 / F92996Axel-exclusive $252.502026-10-29T01:10:09Z

Route overview: Houston to Denver (DEN) flight deals

2027-06-29 · one way · Axel-exclusive $85.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.

2027-06-29 · one way · Axel-exclusive $185.00

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.

2027-06-29 → 2027-06-30 · Axel-exclusive $160.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F93206: DEN 2027-06-30 07:47:00 → IAH 2027-06-30 11:17:00; nonstop; 150 minutes. Local airport times.

2027-06-29 → 2027-06-30 · Axel-exclusive $347.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-06-30 20:53:00 → IAH 2027-07-01 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-01 · Axel-exclusive $172.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F93206: DEN 2027-07-01 05:36:00 → IAH 2027-07-01 09:14:00; nonstop; 158 minutes. Local airport times.

2027-06-29 → 2027-07-01 · Axel-exclusive $373.75

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA475: DEN 2027-07-01 19:30:00 → IAH 2027-07-01 22:52:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-02 · Axel-exclusive $172.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-02 20:59:00 → IAH 2027-07-03 00:22:00; nonstop; 143 minutes. Local airport times.

2027-06-29 → 2027-07-02 · Axel-exclusive $373.75

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-07-02 20:53:00 → IAH 2027-07-03 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-03 · Axel-exclusive $172.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-03 20:59:00 → IAH 2027-07-04 00:22:00; nonstop; 143 minutes. Local airport times.

2027-06-29 → 2027-07-03 · Axel-exclusive $373.75

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-07-03 20:53:00 → IAH 2027-07-04 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-05 · Axel-exclusive $172.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-05 21:18:00 → IAH 2027-07-06 00:42:00; nonstop; 144 minutes. Local airport times.

2027-06-29 → 2027-07-05 · Axel-exclusive $264.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • Frontier Airlines F92996: DEN 2027-07-05 21:18:00 → IAH 2027-07-06 00:42:00; nonstop; 144 minutes. Local airport times.

2027-06-29 → 2027-07-06 · Axel-exclusive $172.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-06 21:18:00 → IAH 2027-07-07 00:42:00; nonstop; 144 minutes. Local airport times.

2027-06-29 → 2027-07-06 · Axel-exclusive $264.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • Frontier Airlines F92996: DEN 2027-07-06 21:18:00 → IAH 2027-07-07 00:42:00; nonstop; 144 minutes. Local airport times.

2027-06-29 → 2027-07-07 · Axel-exclusive $160.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F93206: DEN 2027-07-07 07:47:00 → IAH 2027-07-07 11:17:00; nonstop; 150 minutes. Local airport times.

2027-06-29 → 2027-07-07 · Axel-exclusive $347.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-07-07 20:53:00 → IAH 2027-07-08 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-09 · Axel-exclusive $160.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-09 20:59:00 → IAH 2027-07-10 00:22:00; nonstop; 143 minutes. Local airport times.

2027-06-29 → 2027-07-09 · Axel-exclusive $347.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-07-09 20:53:00 → IAH 2027-07-10 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-10 · Axel-exclusive $160.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-10 20:59:00 → IAH 2027-07-11 00:22:00; nonstop; 143 minutes. Local airport times.

2027-06-29 → 2027-07-10 · Axel-exclusive $347.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-07-10 20:53:00 → IAH 2027-07-11 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-11 · Axel-exclusive $160.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-11 21:18:00 → IAH 2027-07-12 00:42:00; nonstop; 144 minutes. Local airport times.

2027-06-29 → 2027-07-11 · Axel-exclusive $347.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • United Airlines UA2419: DEN 2027-07-11 20:53:00 → IAH 2027-07-12 00:15:00; nonstop; 142 minutes. Local airport times.

2027-06-29 → 2027-07-13 · Axel-exclusive $160.00

  • Frontier Airlines F93229: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 07:39:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F92996: DEN 2027-07-13 21:18:00 → IAH 2027-07-14 00:42:00; nonstop; 144 minutes. Local airport times.

2027-06-29 → 2027-07-13 · Axel-exclusive $252.50

  • American Airlines AA2551 / AA2357: IAH 2027-06-29 06:00:00 → DEN 2027-06-29 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2551: IAH 2027-06-29 06:00:00 → DFW 2027-06-29 07:33:00; layover at DFW: 61 minutes.
    • AA2357: DFW 2027-06-29 08:34:00 → DEN 2027-06-29 09:49:00.
  • Frontier Airlines F92996: DEN 2027-07-13 21:18:00 → IAH 2027-07-14 00:42:00; nonstop; 144 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Houston (IAH) to Denver (DEN) · Jun 29, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • 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 Houston to Denver (DEN) 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.