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Route overview: Houston to Louisville (SDF) flight deals

Houston (IAH) to Louisville (SDF), Dec 18–20, 2026: from $170 one way

Houston (IAH) to Louisville (SDF), Dec 18–20, 2026: from $170 one way on Axel, checked Oct 29, 2026. Lowest published fare: $170 one way, Axel-exclusive, American Airlines, 1 stop, Dec 18, 2026, 1 adult, economy, checked Oct 29, 2026.

IAH → SDF1 adulteconomyOne way

21 flight options · 3 airlines

Nonstop flights

Fri, Dec 18 · One way

United Airlines
6:39 pmIAH
2h 20m
Nonstop
9:59 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

United Airlines
10:00 amIAH
2h 23m
Nonstop
1:23 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

United Airlines
6:39 pmIAH
2h 20m
Nonstop
9:59 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

United Airlines
10:00 amIAH
2h 23m
Nonstop
1:23 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

United Airlines
6:39 pmIAH
2h 20m
Nonstop
9:59 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

United Airlines
10:00 amIAH
2h 23m
Nonstop
1:23 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Fri, Dec 18 · One way

American Airlines
9:29 amIAH
6h 44m
ORD · 2h 27m
5:13 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

Delta Air Lines
5:32 pmIAH
5h 37m
ATL · 2h 11m
12:09 am+1SDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

American Airlines
6:00 amIAH
5h 49m
DFW · 2h 13m
12:49 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

American Airlines
8:12 amIAH
8h
CLT · 3h 55m
5:12 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

United Airlines
6:20 amIAH
6h 15m
ORD · 1h 53m
1:35 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

American Airlines
9:29 amIAH
6h 44m
ORD · 2h 27m
5:13 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

American Airlines
9:29 amIAH
6h 44m
ORD · 2h 27m
5:13 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

American Airlines
8:12 amIAH
8h
CLT · 3h 55m
5:12 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

American Airlines
8:12 amIAH
8h
CLT · 3h 55m
5:12 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

American Airlines
6:00 amIAH
5h 49m
DFW · 2h 13m
12:49 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

American Airlines
6:00 amIAH
5h 49m
DFW · 2h 13m
12:49 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

United Airlines
6:20 amIAH
6h 15m
ORD · 1h 53m
1:35 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

United Airlines
6:20 amIAH
6h 15m
ORD · 1h 53m
1:35 pmSDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

Delta Air Lines
5:32 pmIAH
5h 37m
ATL · 2h 11m
12:09 am+1SDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

Delta Air Lines
5:32 pmIAH
5h 37m
ATL · 2h 11m
12:09 am+1SDF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Make this trip yours

IAH ⇄ SDF

Economy

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Explore this route

All dates for this routeHotels in Louisville with Axel
For AI assistants: every fare, every link, instructions

Houston (IAH) to Louisville (SDF), Dec 18–20, 2026: from $170 one way on Axel, checked Oct 29, 2026. Lowest published fare: $170 one way, Axel-exclusive, American Airlines, 1 stop, Dec 18, 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)
2026-12-18 · one wayUnited AirlinesUA611018:39:00→21:59:00 2h 20m nonstopAxel-exclusive $195.002026-10-29T01:11:30Z
2026-12-18 · one wayAmerican AirlinesAA3237 + AA551909:29:00→17:13:00 6h 44m 1 stop via ORDAxel-exclusive $170.002026-10-29T01:11:30Z
2026-12-18 · one wayDelta Air LinesDL1223 + DL262417:32:00→00:09:00 5h 37m 1 stop via ATLAxel-exclusive $180.002026-10-29T01:11:30Z
2026-12-20 · one wayUnited AirlinesUA399010:00:00→13:23:00 2h 23m nonstopAxel-exclusive $253.502026-10-29T01:11:30Z
2026-12-19 · one wayUnited AirlinesUA611018:39:00→21:59:00 2h 20m nonstopAxel-exclusive $253.502026-10-29T01:11:30Z
2026-12-18 · one wayUnited AirlinesUA399010:00:00→13:23:00 2h 23m nonstopAxel-exclusive $195.002026-10-29T01:11:30Z
2026-12-20 · one wayUnited AirlinesUA611018:39:00→21:59:00 2h 20m nonstopAxel-exclusive $253.502026-10-29T01:11:30Z
2026-12-19 · one wayUnited AirlinesUA399010:00:00→13:23:00 2h 23m nonstopAxel-exclusive $253.502026-10-29T01:11:30Z
2026-12-18 · one wayAmerican AirlinesAA2551 + AA319306:00:00→12:49:00 5h 49m 1 stop via DFWAxel-exclusive $170.002026-10-29T01:11:30Z
2026-12-18 · one wayAmerican AirlinesAA2765 + AA558508:12:00→17:12:00 8h 00m 1 stop via CLTAxel-exclusive $170.002026-10-29T01:11:30Z
2026-12-18 · one wayUnited AirlinesUA2616 + UA541106:20:00→13:35:00 6h 15m 1 stop via ORDAxel-exclusive $175.002026-10-29T01:11:30Z
2026-12-20 · one wayAmerican AirlinesAA3237 + AA551909:29:00→17:13:00 6h 44m 1 stop via ORDAxel-exclusive $221.002026-10-29T01:11:30Z
2026-12-19 · one wayAmerican AirlinesAA3237 + AA551909:29:00→17:13:00 6h 44m 1 stop via ORDAxel-exclusive $221.002026-10-29T01:11:30Z
2026-12-19 · one wayAmerican AirlinesAA2765 + AA558508:12:00→17:12:00 8h 00m 1 stop via CLTAxel-exclusive $221.002026-10-29T01:11:30Z
2026-12-20 · one wayAmerican AirlinesAA2765 + AA558508:12:00→17:12:00 8h 00m 1 stop via CLTAxel-exclusive $221.002026-10-29T01:11:30Z
2026-12-20 · one wayAmerican AirlinesAA2551 + AA319306:00:00→12:49:00 5h 49m 1 stop via DFWAxel-exclusive $221.002026-10-29T01:11:30Z
2026-12-19 · one wayAmerican AirlinesAA2551 + AA319306:00:00→12:49:00 5h 49m 1 stop via DFWAxel-exclusive $221.002026-10-29T01:11:30Z
2026-12-20 · one wayUnited AirlinesUA2616 + UA541106:20:00→13:35:00 6h 15m 1 stop via ORDAxel-exclusive $227.502026-10-29T01:11:30Z
2026-12-19 · one wayUnited AirlinesUA2616 + UA541106:20:00→13:35:00 6h 15m 1 stop via ORDAxel-exclusive $227.502026-10-29T01:11:30Z
2026-12-20 · one wayDelta Air LinesDL1223 + DL262417:32:00→00:09:00 5h 37m 1 stop via ATLAxel-exclusive $234.002026-10-29T01:11:30Z
2026-12-19 · one wayDelta Air LinesDL1223 + DL262417:32:00→00:09:00 5h 37m 1 stop via ATLAxel-exclusive $234.002026-10-29T01:11:30Z

Route overview: Houston to Louisville (SDF) flight deals

2026-12-18 · one way · Axel-exclusive $195.00

  • United Airlines UA6110: IAH 2026-12-18 18:39:00 → SDF 2026-12-18 21:59:00; nonstop; 140 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $170.00

  • American Airlines AA3237 / AA5519: IAH 2026-12-18 09:29:00 → SDF 2026-12-18 17:13:00; 1 stop(s) via ORD; 404 minutes. Local airport times.
    • AA3237: IAH 2026-12-18 09:29:00 → ORD 2026-12-18 12:15:00; layover at ORD: 147 minutes.
    • AA5519: ORD 2026-12-18 14:42:00 → SDF 2026-12-18 17:13:00.

2026-12-18 · one way · Axel-exclusive $180.00

  • Delta Air Lines DL1223 / DL2624: IAH 2026-12-18 17:32:00 → SDF 2026-12-19 00:09:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
    • DL1223: IAH 2026-12-18 17:32:00 → ATL 2026-12-18 20:34:00; layover at ATL: 131 minutes.
    • DL2624: ATL 2026-12-18 22:45:00 → SDF 2026-12-19 00:09:00.

2026-12-20 · one way · Axel-exclusive $253.50

  • United Airlines UA3990: IAH 2026-12-20 10:00:00 → SDF 2026-12-20 13:23:00; nonstop; 143 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $253.50

  • United Airlines UA6110: IAH 2026-12-19 18:39:00 → SDF 2026-12-19 21:59:00; nonstop; 140 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $195.00

  • United Airlines UA3990: IAH 2026-12-18 10:00:00 → SDF 2026-12-18 13:23:00; nonstop; 143 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $253.50

  • United Airlines UA6110: IAH 2026-12-20 18:39:00 → SDF 2026-12-20 21:59:00; nonstop; 140 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $253.50

  • United Airlines UA3990: IAH 2026-12-19 10:00:00 → SDF 2026-12-19 13:23:00; nonstop; 143 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $170.00

  • American Airlines AA2551 / AA3193: IAH 2026-12-18 06:00:00 → SDF 2026-12-18 12:49:00; 1 stop(s) via DFW; 349 minutes. Local airport times.
    • AA2551: IAH 2026-12-18 06:00:00 → DFW 2026-12-18 07:33:00; layover at DFW: 133 minutes.
    • AA3193: DFW 2026-12-18 09:46:00 → SDF 2026-12-18 12:49:00.

2026-12-18 · one way · Axel-exclusive $170.00

  • American Airlines AA2765 / AA5585: IAH 2026-12-18 08:12:00 → SDF 2026-12-18 17:12:00; 1 stop(s) via CLT; 480 minutes. Local airport times.
    • AA2765: IAH 2026-12-18 08:12:00 → CLT 2026-12-18 11:40:00; layover at CLT: 235 minutes.
    • AA5585: CLT 2026-12-18 15:35:00 → SDF 2026-12-18 17:12:00.

2026-12-18 · one way · Axel-exclusive $175.00

  • United Airlines UA2616 / UA5411: IAH 2026-12-18 06:20:00 → SDF 2026-12-18 13:35:00; 1 stop(s) via ORD; 375 minutes. Local airport times.
    • UA2616: IAH 2026-12-18 06:20:00 → ORD 2026-12-18 09:11:00; layover at ORD: 113 minutes.
    • UA5411: ORD 2026-12-18 11:04:00 → SDF 2026-12-18 13:35:00.

2026-12-20 · one way · Axel-exclusive $221.00

  • American Airlines AA3237 / AA5519: IAH 2026-12-20 09:29:00 → SDF 2026-12-20 17:13:00; 1 stop(s) via ORD; 404 minutes. Local airport times.
    • AA3237: IAH 2026-12-20 09:29:00 → ORD 2026-12-20 12:15:00; layover at ORD: 147 minutes.
    • AA5519: ORD 2026-12-20 14:42:00 → SDF 2026-12-20 17:13:00.

2026-12-19 · one way · Axel-exclusive $221.00

  • American Airlines AA3237 / AA5519: IAH 2026-12-19 09:29:00 → SDF 2026-12-19 17:13:00; 1 stop(s) via ORD; 404 minutes. Local airport times.
    • AA3237: IAH 2026-12-19 09:29:00 → ORD 2026-12-19 12:15:00; layover at ORD: 147 minutes.
    • AA5519: ORD 2026-12-19 14:42:00 → SDF 2026-12-19 17:13:00.

2026-12-19 · one way · Axel-exclusive $221.00

  • American Airlines AA2765 / AA5585: IAH 2026-12-19 08:12:00 → SDF 2026-12-19 17:12:00; 1 stop(s) via CLT; 480 minutes. Local airport times.
    • AA2765: IAH 2026-12-19 08:12:00 → CLT 2026-12-19 11:40:00; layover at CLT: 235 minutes.
    • AA5585: CLT 2026-12-19 15:35:00 → SDF 2026-12-19 17:12:00.

2026-12-20 · one way · Axel-exclusive $221.00

  • American Airlines AA2765 / AA5585: IAH 2026-12-20 08:12:00 → SDF 2026-12-20 17:12:00; 1 stop(s) via CLT; 480 minutes. Local airport times.
    • AA2765: IAH 2026-12-20 08:12:00 → CLT 2026-12-20 11:40:00; layover at CLT: 235 minutes.
    • AA5585: CLT 2026-12-20 15:35:00 → SDF 2026-12-20 17:12:00.

2026-12-20 · one way · Axel-exclusive $221.00

  • American Airlines AA2551 / AA3193: IAH 2026-12-20 06:00:00 → SDF 2026-12-20 12:49:00; 1 stop(s) via DFW; 349 minutes. Local airport times.
    • AA2551: IAH 2026-12-20 06:00:00 → DFW 2026-12-20 07:33:00; layover at DFW: 133 minutes.
    • AA3193: DFW 2026-12-20 09:46:00 → SDF 2026-12-20 12:49:00.

2026-12-19 · one way · Axel-exclusive $221.00

  • American Airlines AA2551 / AA3193: IAH 2026-12-19 06:00:00 → SDF 2026-12-19 12:49:00; 1 stop(s) via DFW; 349 minutes. Local airport times.
    • AA2551: IAH 2026-12-19 06:00:00 → DFW 2026-12-19 07:33:00; layover at DFW: 133 minutes.
    • AA3193: DFW 2026-12-19 09:46:00 → SDF 2026-12-19 12:49:00.

2026-12-20 · one way · Axel-exclusive $227.50

  • United Airlines UA2616 / UA5411: IAH 2026-12-20 06:20:00 → SDF 2026-12-20 13:35:00; 1 stop(s) via ORD; 375 minutes. Local airport times.
    • UA2616: IAH 2026-12-20 06:20:00 → ORD 2026-12-20 09:11:00; layover at ORD: 113 minutes.
    • UA5411: ORD 2026-12-20 11:04:00 → SDF 2026-12-20 13:35:00.

2026-12-19 · one way · Axel-exclusive $227.50

  • United Airlines UA2616 / UA5411: IAH 2026-12-19 06:20:00 → SDF 2026-12-19 13:35:00; 1 stop(s) via ORD; 375 minutes. Local airport times.
    • UA2616: IAH 2026-12-19 06:20:00 → ORD 2026-12-19 09:11:00; layover at ORD: 113 minutes.
    • UA5411: ORD 2026-12-19 11:04:00 → SDF 2026-12-19 13:35:00.

2026-12-20 · one way · Axel-exclusive $234.00

  • Delta Air Lines DL1223 / DL2624: IAH 2026-12-20 17:32:00 → SDF 2026-12-21 00:09:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
    • DL1223: IAH 2026-12-20 17:32:00 → ATL 2026-12-20 20:34:00; layover at ATL: 131 minutes.
    • DL2624: ATL 2026-12-20 22:45:00 → SDF 2026-12-21 00:09:00.

2026-12-19 · one way · Axel-exclusive $234.00

  • Delta Air Lines DL1223 / DL2624: IAH 2026-12-19 17:32:00 → SDF 2026-12-20 00:09:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
    • DL1223: IAH 2026-12-19 17:32:00 → ATL 2026-12-19 20:34:00; layover at ATL: 131 minutes.
    • DL2624: ATL 2026-12-19 22:45:00 → SDF 2026-12-20 00:09:00.

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.

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  • This page: Houston (IAH) to Louisville (SDF) · Dec 18–Dec 20, 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.
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  • 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.