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Find cheap United Airlines flights to Louisville

CMH — SDF
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to Louisville

Cheapest United Airlines flights from USA to Louisville
Explore the most affordable United Airlines flight options available from USA to Louisville. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:25 pm
IAD
-
SDF
Nonstop1h 50m
United Airlines
Mon 8/241:56 pm
SDF
-
IAD
Nonstop1h 38m
United Airlines
Deal found 7/27$241
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:25 pm
IAD
-
SDF
Nonstop1h 50m
United Airlines
Mon 9/282:12 pm
SDF
-
IAD
Nonstop1h 38m
United Airlines
Deal found 7/27$245
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:45 pm
EWR
-
SDF
Nonstop2h 28m
United Airlines
Tue 9/11:08 pm
SDF
-
EWR
Nonstop2h 16m
United Airlines
Deal found 7/24$249

Flights to Louisville with United Airlines at a glance

Find detailed information about United Airlines flights from USA to Louisville. Explore the options provided by United Airlines to plan your journey from USA to Louisville. Data last updated July 27, 2026.

Popular in

June

Cheapest in

August

Average price

$404

Round-trip from

$241

One-way from

$144

Good one-way deal

$268 or less
Highest demand for flights to Louisville with United Airlines; 11% potential price increase.
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Best time to find cheap flights to Louisville with United Airlines; 2% potential price drop.
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Average price for flights to Louisville with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 8/20-8/24
  • Nonstop
  • 3h 28m total
  • USA to Louisville
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United Airlines
  • United Airlines
  • 8/17
  • 1 total stop
  • 6h 48m total
  • USA to Louisville
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Price to beat on a one-way flight from the United States to Louisville with United Airlines.
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Cheapflights Insights

Find cheap United Airlines flights to Louisville

How long is the flight to Louisville with United Airlines?

On average, United Airlines flights from the United States to Louisville take 2 hours 9 minutes. Flights to Louisville from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

United Airlines weekly flight availability to Louisville

The most flights to Louisville operated by United Airlines are scheduled on a Saturday (19 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).

When is the best time to book a flight to Louisville with United Airlines?

The best time to book a flight to Louisville with United Airlines is 52 days before departure. On average, fares are higher if you book 89 days before departure.

When is the cheapest time to fly to Louisville with United Airlines?

Users looking for the cheapest United Airlines fares to Louisville should consider flying on Saturday at noon, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday afternoons, when prices are usually at their highest.

FAQs about flights to Louisville with United Airlines

  • Which airport do United Airlines flights arrive at when travelling to Louisville?

    United Airlines flights on this route tend to land at Louisville Intl Airport.

  • Is United Airlines the cheapest airline for a flight to Louisville?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Louisville tends to be with Allegiant Air.

  • Are there alternative airlines other than United Airlines that fly to Louisville?

    American Airlines, Delta and Southwest all fly to Louisville and offer an alternative to United Airlines.

  • How much is a flight to Louisville with United Airlines?

    The average price for a return flight with United Airlines is $469; with a one-way flight around $319.

See more FAQs

Reviews of United Airlines

See what Cheapflights users have to say about their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Popular United Airlines flights

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Other airports near Louisville Intl

Other Louisville travelers fly to these airports near Louisville Intl.
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