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DEN to SDF
Denver to Louisville Ky Flights from US$238 + Up to 20% Off
Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.
Live fares from the airlines
No hidden charges
Transparent cancellation policy
24×7 booking support
Cheapest fareUS$238United Airlines
Fastest2h 44mgate to gate
Options today51flights on this route
Live flights for Mon, 07 Sep 2026
Review fares, stops, timings and baggage. Use Search or View all flights for the complete search result.
Showing flight options for the selected travel date.
Currency: USD
Amazon PayPayment reward
Your FLYX20 saving stays applied. STAY30 is only for eligible hotel bookings. Payment-partner rewards are additional and checked inside secure payment.
United Airlines
UA-514
17:45
2026-09-07
Denver (DEN)
Denver International
Denver International2H :46 M
Non Stop
22:31
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field)
Delta Air Lines
DL-1129
06:00
2026-09-07
Denver (DEN)Denver International
Denver International7H :50 M
1 Stop
MSP
· 3h 53m Minneapolis (MSP), United States
15:50
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-1479
09:45
2026-09-07
Denver (DEN)Denver International
Denver International2H :44 M
Non Stop
14:29
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field)
American Airlines
AA-2612
05:03
2026-09-07
Denver (DEN)Denver International
Denver International5H :46 M
1 Stop
DFW
· 1h 24m Dallas (DFW), United States
12:49
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-2865
11:15
2026-09-07
Denver (DEN)Denver International
Denver International7H :21 M
1 Stop
ORD
· 2h 59m Chicago (ORD), United States
20:36
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-2744
23:59
2026-09-07
Denver (DEN)Denver International
Denver International8H :19 M
1 Stop
CLT
· 3h 26m Charlotte (CLT), United States
10:18
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-2559
09:05
2026-09-07
Denver (DEN)Denver International
Denver International10H :20 M
1 Stop
ORD
· 5h 58m Chicago (ORD), United States
21:25
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-2559
09:05
2026-09-07
Denver (DEN)Denver International
Denver International23H :30 M
1 Stop
ORD
· 19h 13m Chicago (ORD), United States
10:35
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-1317
17:44
2026-09-07
Denver (DEN)Denver International
Denver International14H :51 M
1 Stop
ORD
· 10h 20m Chicago (ORD), United States
10:35
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-1317
17:44
2026-09-07
Denver (DEN)Denver International
Denver International22H :16 M
1 Stop
ORD
· 17h 39m Chicago (ORD), United States
18:00
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-1317
17:44
2026-09-07
Denver (DEN)Denver International
Denver International25H :41 M
1 Stop
ORD
· 21h 05m Chicago (ORD), United States
21:25
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-377
20:29
2026-09-07
Denver (DEN)Denver International
Denver International11H :05 M
1 Stop
ORD
· 6h 56m Chicago (ORD), United States
09:34
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-377
20:29
2026-09-07
Denver (DEN)Denver International
Denver International20H :38 M
1 Stop
ORD
· 16h 31m Chicago (ORD), United States
19:07
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-377
20:29
2026-09-07
Denver (DEN)Denver International
Denver International22H :03 M
1 Stop
ORD
· 17h 56m Chicago (ORD), United States
20:32
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-377
20:29
2026-09-07
Denver (DEN)Denver International
Denver International25H :27 M
1 Stop
ORD
· 21h 21m Chicago (ORD), United States
23:56
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-2430
08:35
2026-09-07
Denver (DEN)Denver International
Denver International6H :10 M
1 Stop
ORD
· 1h 48m Chicago (ORD), United States
16:45
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-2559
09:05
2026-09-07
Denver (DEN)Denver International
Denver International6H :55 M
1 Stop
ORD
· 2h 32m Chicago (ORD), United States
18:00
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-2363
12:23
2026-09-07
Denver (DEN)Denver International
Denver International7H :02 M
1 Stop
ORD
· 2h 35m Chicago (ORD), United States
21:25
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-1277
14:21
2026-09-07
Denver (DEN)Denver International
Denver International5H :04 M
1 Stop
ORD
· 0h 35m Chicago (ORD), United States
21:25
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) American Airlines
AA-1283
15:02
2026-09-07
Denver (DEN)Denver International
Denver International6H :09 M
1 Stop
CLT
· 1h 18m Charlotte (CLT), United States
23:11
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-1928
07:45
2026-09-07
Denver (DEN)Denver International
Denver International10H :51 M
1 Stop
ORD
· 6h 31m Chicago (ORD), United States
20:36
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-1928
07:45
2026-09-07
Denver (DEN)Denver International
Denver International14H :14 M
1 Stop
ORD
· 9h 57m Chicago (ORD), United States
23:59
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field)Recommended hotels in Louisville Ky
Stay options near the arrival city for the same travel date.
Quality Inn Louisville
201 Highway 15 N, 39339
Room availability is checked live
$84per night+ taxes if applicable
1 Night • 3 Star
Homegate Inn
2565 Metts St, 39339
Room availability is checked live
$98per night+ taxes if applicable
1 Night • 2 Star
The Mason Boutique Hotel
915 South Columbus Ave, 39339
Room availability is checked live
$167per night+ taxes if applicable
1 Night • 3 Star
United Airlines
UA-1928
07:45
2026-09-07
Denver (DEN)Denver International
Denver International23H :49 M
1 Stop
ORD
· 19h 27m Chicago (ORD), United States
09:34
2026-09-08
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-1377
06:00
2026-09-07
Denver (DEN)Denver International
Denver International5H :11 M
1 Stop
ORD
· 0h 52m Chicago (ORD), United States
13:11
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-1279
06:00
2026-09-07
Denver (DEN)Denver International
Denver International6H :37 M
1 Stop
IAD
· 1h 26m Washington (IAD), United States
14:37
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field) United Airlines
UA-1928
07:45
2026-09-07
Denver (DEN)Denver International
Denver International7H :00 M
1 Stop
ORD
· 2h 39m Chicago (ORD), United States
16:45
2026-09-07
Louisville KY (SDF)Louisville International (Standiford Field)
Louisville International (Standiford Field)No flights match the selected filters. Clear filters or open full search.
Fare highlights
Selected flight highlights for 07 Sep 2026.
Lowest fare
$238
United Airlines
17:45
Earliest departure
$591
United Airlines
05:00
Shortest duration
$372
United Airlines
09:45
Weather in Denver and Louisville Ky
Live forecast for both cities, 23 Aug to 26 Aug.
Denver
Wed, 26 Aug24°CClear skyLow 15°
- Sun32° / 19°
- Mon29° / 18°
- Tue26° / 16°
Louisville Ky
Wed, 26 Aug26°CClear skyLow 18°
- Sun27° / 21°
- Mon26° / 18°
- Tue27° / 18°
Forecast data from MET Norway, CC BY 4.0.
Holidays and peak dates for Louisville Ky
Fares and hotel rates usually run higher around these dates. Booking earlier — or shifting a day or two — often costs less.
Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).
- 07SepLabor DayMonday · in 20 daysPeak
- 12OctColumbus DayMonday · in 55 days
- 12OctColumbus DayMonday · in 55 days
- 12OctIndigenous Peoples' DayMonday · in 55 days
- 11NovVeterans DayWednesday · in 85 days
- 26NovThanksgiving DayThursday · in 100 days
Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here — check the exact date for your travel year.
How to travel Denver to Louisville Ky
Every option we can actually book for you, compared on price and journey time.
OptionFromJourney timeAvailability
Non-stop flight Fastest₹22,7512h 44m2 flights today
Connecting flight₹25,687Longer — includes a stop49 options
Air distance is about 1,644 km. 3 airlines operate this route.
Road distance and coach duration are approximate estimates from the air distance, not a timetable.
Denver to Louisville Ky flight booking guide
Quick answers to the most common questions about flying Denver to Louisville Ky.
Are direct Denver to Louisville Ky flights available?
Yes. The current route snapshot includes 2 non-stop options. Availability can change by travel date, so recheck before payment.
Best time or month to book
There is no permanently cheapest month because airline inventory changes continuously. As a practical starting point, compare nearby dates and begin checking international trips 6–12 weeks before departure; peak holidays may need earlier booking.
Cheapest days for this route
Among the dates currently shown, Monday has the lowest displayed fare at $238. This is a live snapshot, not a guaranteed weekly rule.
Baggage rules
Allowance is fare-specific, not just airline-specific. Current cards show examples such as 0 Pieces check-in baggage. Open the fare choices and verify cabin/check-in baggage before continuing.
Cancellation and refund explanation
Refundable and non-refundable labels are shown on each card. Exact airline cancellation charges, no-show rules and refund timelines are verified for the selected fare before booking; promotional discounts and applicable charges are adjusted from any refund.
Secure booking support
FlyX rechecks the live fare before payment, shows the payable amount and provides 24×7 booking support. Payment, refund, cancellation and help links are available in the footer.
Airlines flying from Denver to Louisville Ky
Compare fares, stops, baggage and refundability across the airlines flying this route.
United Airlines Denver to Louisville Ky flights
United Airlines cheap flights Denver to Louisville Ky
Fares start from $238 on this route.
Denver to Louisville Ky direct United Airlines flights
2 non-stop flights currently available.
Denver to Louisville Ky United Airlines flight schedule
23 departures — compare timings in the list above.
American Airlines Denver to Louisville Ky flights
American Airlines cheap flights Denver to Louisville Ky
Fares start from $382 on this route.
Denver to Louisville Ky American Airlines flight schedule
19 departures — compare timings in the list above.
Delta Air Lines Denver to Louisville Ky flights
Delta Air Lines cheap flights Denver to Louisville Ky
Fares start from $268 on this route.
Denver to Louisville Ky Delta Air Lines flight schedule
9 departures — compare timings in the list above.
Denver to Louisville Ky flight details
| Cheapest fare | US$238 · Mon, 07 Sep |
|---|---|
| Fastest flight duration | 2h 44m · United Airlines |
| First departure of the day | 05:00 · United Airlines |
| Last departure of the day | 23:59 · American Airlines |
| Flights currently available | 51 |
| Direct / non-stop options | 2 |
| Popular airlines on this route | United Airlines, American Airlines, Delta Air Lines |
| Airport codes | Denver–DEN, Louisville Ky–SDF |
Fares and timings are indicative — the exact price is confirmed with the airline when you search.
Denver to Louisville Ky flight schedule, timing and fares
Denver to Louisville Ky flight schedule and timing
Around 51 flights operate on this route, including 2 non-stop options. Departures run through the day — the first flight leaves around 05:00 and the last around 23:59. The fastest flight takes about 2h 44m.
Morning vs evening Denver–Louisville Ky fares
Lowest fare by departure window: Afternoon from $238, Morning from $268, Night from $382, Evening from $382. Early-morning and late-night flights are often cheaper than peak daytime slots.
What is today’s lowest airfare from Denver to Louisville Ky?
The lowest fare we are currently showing is US$238, on a Monday departure. Airfares change through the day, so search your dates for the exact price.
Should I book one-way or round-trip for Denver to Louisville Ky?
Domestic fares are usually priced per leg, so two one-ways often cost about the same as a round-trip and keep your return date flexible. Round-trip is worth choosing when you want a single PNR for both legs, and eligible coupons like FLYX20 apply either way.
Which airlines should I consider for Denver to Louisville Ky?
United Airlines (23 flights, from $238), American Airlines (19 flights, from $382), Delta Air Lines (9 flights, from $268). Compare fare type, baggage and refundability — the cheapest airline is not always the best value for your dates.
Web check-in for your Denver to Louisville Ky flight
Most airlines open web check-in 24–48 hours before departure on their own website or app using your PNR. Checking in early lets you pick better seats free of charge on many fares; FlyX also links every booking’s airline check-in page from Web Check-in.
How to book a Denver to Louisville Ky flight on FlyX
- 1Enter your travel details
Choose one-way or round-trip, pick your dates and travellers in the search form above.
- 2Compare live results
Sort or filter the Denver–Louisville Ky results by price, departure time, stops and airline.
- 3Open the fare choices
Check baggage allowance and refundability for each fare type before continuing.
- 4Review the final price
FlyX rechecks the live fare with the airline; any eligible coupon is applied automatically.
- 5Pay securely
UPI, cards, net banking and wallets supported; your e-ticket is emailed within minutes.
Why book your Denver to Louisville Ky flight with FlyX?
If you are looking for Denver to Louisville Ky flight tickets at the best possible fare, FlyX keeps the process simple and transparent. Enter your dates and travellers, compare live fares across every major airline on this route, and filter by price, departure time, stops or airline to find the flight that actually fits your plan. Every fare you see is rechecked live with the airline before payment, so the price you approve is the price you pay — no hidden charges added at checkout.
And that is not all — eligible discounts like FLYX20 are applied automatically on the review page, payments run over 256-bit SSL with UPI, cards, net banking and wallets, and our 24x7 support team backs every booking as an IATA-accredited travel company. Refund and cancellation rules are shown clearly for each fare before you pay, and your e-ticket lands in your inbox within minutes. So why wait? Book your Denver to Louisville Ky flight on FlyX and take off with genuine savings today.
Denver to Louisville Ky flight offers & coupon codes
| Coupon code | Offer | Max saving |
|---|---|---|
| FLYX20 | Up to 20% Off on Flights | ₹1,500 |
Your discount is applied automatically on the review page before you pay. View full terms.
Frequently asked questions - Denver to Louisville Ky flights
Is it worth booking Denver to Louisville Ky flights in advance?
Yes, booking flights in advance helps you secure cheap flight tickets. Comparing air ticket prices 3–4 weeks early gives you better visibility of airline timings, baggage policies, and fare rules before high-demand periods push prices up.
How far is Denver from Louisville Ky by air?
The approximate direct air distance between Denver (DEN) and Louisville Ky (SDF) is 1,643.62 km. The actual flight duration and route path vary depending on airline schedules and wind conditions.
Are there non-stop flights from DEN to SDF?
Non-stop flight availability depends on the airline schedule and departure date. You can filter the live search results by stops to view direct flights, one-stop connections, and transit flights instantly.
Why does the price change after clicking Book Now?
Airline seat inventory and airfares change dynamically in real-time. Selecting 'Book Now' runs a live fare verification check to ensure you get the most accurate price before final booking confirmation.
Can I compare nearby dates?
Yes, you can easily compare flights for nearby dates. Select any date on the date calendar strip to refresh the fares, compare air ticket pricing, and choose the most budget-friendly travel day.
Denver to Louisville Ky - what to expect when booking
The DEN to SDF cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.
Approx route distance: 1,643.62 km.
Before you book
Compare nearby dates
The date strip opens the complete search result for the route and selected date.
Use filters
Shortlist by price, stops, departure time and refundable fare preference.
Check fare choices
Continue to Booking opens the verified fare choices, including baggage and refundability, before review.
Book Cheapest Flight from Denver to Louisville Ky on FlyX
Securing the best airfare from Denver to Louisville Ky is all about planning. FlyX's real-time fare tracking system allows you to check flight options and lock in the lowest ticket prices before they rise:
- Book at least 3-4 weeks in advance to secure the most competitive Denver to Louisville Ky airfares.
- Consider traveling mid-week (Tuesdays or Wednesdays) to bypass weekend pricing surges.
- Early morning or late-night departure flights consistently offer lower fares than afternoon slots.
- Use our live calendar view above to easily spot fare changes on nearby dates.
Find the Lowest airfare from Denver to Louisville Ky
| Cheapest Fare | Fare | Date | Airline | Departure |
|---|---|---|---|---|
| Lowest Airfare Today | $238 | 07/09/2026 | United Airlines | 17:45 |
| Cheapest Airfare Within 30 Days | $233 | 17/09/2026 | United Airlines | 17:45 |
| Cheapest Airfare Within 90 Days | $226 | 16/11/2026 | United Airlines | 17:45 |
Book Denver to Louisville Ky Flight Tickets on FlyX
Planning to fly from Denver to Louisville Ky? FlyX lets you compare flight rates, airline timings, layovers, and baggage allowances all in one simple list. From quick non-stop routes to flexible connecting options, finding and booking cheap air tickets has never been easier.
Denver to Louisville Ky Flight Distance, Duration and Time
The aerial distance between Denver and Louisville Ky is approximately 1,644 KM. The flight duration ranges from 2H :44 M up to 25H :41 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
Denver to Louisville Ky Flight Schedule and Timing
Around 51 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from Denver at 05:00, while the last night flight leaves at 23:59. Flights depart from Denver International and land at Louisville International (Standiford Field).
Flight Route Details & Analysis
| Flight Details | Information |
|---|---|
| Route | Denver to Louisville Ky |
| Aerial Distance | 1,644 KM |
| Flight Duration | 2H :44 M - 25H :41 M |
| Airport Codes | Denver - DEN, Louisville Ky - SDF |
| Total Flights Available | 51 flights (2 direct) |
| First Flight Departure | Departs at 05:00 |
| Last Flight Departure | Departs at 23:59 |
| Early Morning Flights (12 AM - 8 AM) | 15 direct/indirect flights |
| Morning Flights (8 AM - 12 PM) | 14 direct/indirect flights |
| Afternoon Flights (12 PM - 4 PM) | 10 direct/indirect flights |
| Evening Flights (4 PM - 8 PM) | 7 direct/indirect flights |
| Night Flights (8 PM - 12 AM) | 5 direct/indirect flights |
Airport Information & Terminals
DEN: Denver airport. Denver airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.
SDF: Louisville airport. Louisville airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.
SDF: Louisville airport. Louisville airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.