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Saint Louis → Houston

Dec 21, 2026 · return Dec 23, 2026

STL → IAH1 adulteconomyRound trip

4 flight options · 3 airlines

Nonstop flights

Mon, Dec 21 – Wed, Dec 23

United Airlines
2:55 pmSTL
2h 24m
Nonstop
5:19 pmIAH
United Airlines
8:00 amIAH
2h 2m
Nonstop
10:02 amSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

United Airlines
6:15 amSTL
2h 23m
Nonstop
8:38 amIAH
United Airlines
8:00 amIAH
2h 2m
Nonstop
10:02 amSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Wed, Dec 23

Frontier Airlines
6:21 pmSTL
6h 5m
ATL · 1h 43m
12:26 am+1IAH
Frontier Airlines
6:23 pmIAH
6h 18m
MCO · 1h 3m
12:41 am+1STL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

American Airlines
12:58 pmSTL
4h 59m
DFW · 1h 35m
5:57 pmIAH
American Airlines
6:00 amIAH
6h 26m
DFW · 2h 59m
12:26 pmSTL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ IAH

Economy

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

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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 → 2026-12-23United AirlinesUA4075 / UA6214$490.002026-10-29T01:28:37Z
2026-12-21 → 2026-12-23Frontier AirlinesF94474 + F94075 / F94978 + F92635$273.002026-10-29T01:28:37Z
2026-12-21 → 2026-12-23American AirlinesAA5082 + AA2881 / AA2551 + AA5082$434.002026-10-29T01:28:37Z
2026-12-21 → 2026-12-23United AirlinesUA1371 / UA6214$490.002026-10-29T01:28:37Z

2026-12-21 → 2026-12-23 · $490.00

  • United Airlines UA4075: STL 2026-12-21 14:55:00 → IAH 2026-12-21 17:19:00; nonstop; 144 minutes. Local airport times.
  • United Airlines UA6214: IAH 2026-12-23 08:00:00 → STL 2026-12-23 10:02:00; nonstop; 122 minutes. Local airport times.

2026-12-21 → 2026-12-23 · $273.00

  • Frontier Airlines F94474 / F94075: STL 2026-12-21 18:21:00 → IAH 2026-12-22 00:26:00; 1 stop(s) via ATL; 365 minutes. Local airport times.
    • F94474: STL 2026-12-21 18:21:00 → ATL 2026-12-21 21:16:00; layover at ATL: 103 minutes.
    • F94075: ATL 2026-12-21 22:59:00 → IAH 2026-12-22 00:26:00.
  • Frontier Airlines F94978 / F92635: IAH 2026-12-23 18:23:00 → STL 2026-12-24 00:41:00; 1 stop(s) via MCO; 378 minutes. Local airport times.
    • F94978: IAH 2026-12-23 18:23:00 → MCO 2026-12-23 21:56:00; layover at MCO: 63 minutes.
    • F92635: MCO 2026-12-23 22:59:00 → STL 2026-12-24 00:41:00.

2026-12-21 → 2026-12-23 · $434.00

  • American Airlines AA5082 / AA2881: STL 2026-12-21 12:58:00 → IAH 2026-12-21 17:57:00; 1 stop(s) via DFW; 299 minutes. Local airport times.
    • AA5082: STL 2026-12-21 12:58:00 → DFW 2026-12-21 15:05:00; layover at DFW: 95 minutes.
    • AA2881: DFW 2026-12-21 16:40:00 → IAH 2026-12-21 17:57:00.
  • American Airlines AA2551 / AA5082: IAH 2026-12-23 06:00:00 → STL 2026-12-23 12:26:00; 1 stop(s) via DFW; 386 minutes. Local airport times.
    • AA2551: IAH 2026-12-23 06:00:00 → DFW 2026-12-23 07:33:00; layover at DFW: 179 minutes.
    • AA5082: DFW 2026-12-23 10:32:00 → STL 2026-12-23 12:26:00.

2026-12-21 → 2026-12-23 · $490.00

  • United Airlines UA1371: STL 2026-12-21 06:15:00 → IAH 2026-12-21 08:38:00; nonstop; 143 minutes. Local airport times.
  • United Airlines UA6214: IAH 2026-12-23 08:00:00 → STL 2026-12-23 10:02:00; nonstop; 122 minutes. Local airport times.

More dates for this route