$154 Cheap Flights from Billings (BIL) to Louisville (SDF)

View $154 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Billings Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF)

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Cheap Flights from Billings to Louisville (BIL-SDF)

Prices were available within the past 7 days and start at $154 for one-way flights and $269 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 23 - Sun, Sep 7
BIL
Billings
SDF
Louisville
$269 Roundtrip, found 13 hours ago
$269
Roundtrip
found 13 hours ago
Select Delta flight, departing Sat, Aug 23 from Billings to Louisville, returning Sun, Sep 7, priced at $269 found 13 hours ago
American Airlines
Wed, Aug 13 - Wed, Aug 20
BIL
Billings
SDF
Louisville
$269 Roundtrip, found 4 hours ago
$269
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Aug 13 from Billings to Louisville, returning Wed, Aug 20, priced at $269 found 4 hours ago
United
Fri, Aug 29 - Tue, Sep 2
BIL
Billings
SDF
Louisville
$274 Roundtrip, found 5 days ago
$274
Roundtrip
found 5 days ago
Select United flight, departing Fri, Aug 29 from Billings to Louisville, returning Tue, Sep 2, priced at $274 found 5 days ago
United
Fri, Aug 29 - Tue, Sep 2
BIL
Billings
SDF
Louisville
$277 Roundtrip, found 5 days ago
$277
Roundtrip
found 5 days ago
Select United flight, departing Fri, Aug 29 from Billings to Louisville, returning Tue, Sep 2, priced at $277 found 5 days ago
Delta
Thu, Aug 14 - Sat, Aug 30
BIL
Billings
SDF
Louisville
$279 Roundtrip, found 13 hours ago
$279
Roundtrip
found 13 hours ago
Select Delta flight, departing Thu, Aug 14 from Billings to Louisville, returning Sat, Aug 30, priced at $279 found 13 hours ago
United
Fri, Aug 29 - Tue, Sep 2
BIL
Billings
SDF
Louisville
$283 Roundtrip, found 5 days ago
$283
Roundtrip
found 5 days ago
Select United flight, departing Fri, Aug 29 from Billings to Louisville, returning Tue, Sep 2, priced at $283 found 5 days ago
Delta
Sat, Aug 2 - Tue, Aug 12
BIL
Billings
SDF
Louisville
$288 Roundtrip, found 13 hours ago
$288
Roundtrip
found 13 hours ago
Select Delta flight, departing Sat, Aug 2 from Billings to Louisville, returning Tue, Aug 12, priced at $288 found 13 hours ago
American Airlines
Wed, Aug 13 - Wed, Aug 20
BIL
Billings
SDF
Louisville
$289 Roundtrip, found 4 hours ago
$289
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Aug 13 from Billings to Louisville, returning Wed, Aug 20, priced at $289 found 4 hours ago
Delta
Fri, Aug 22 - Sun, Sep 7
BIL
Billings
SDF
Louisville
$293 Roundtrip, found 13 hours ago
$293
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, Aug 22 from Billings to Louisville, returning Sun, Sep 7, priced at $293 found 13 hours ago
American Airlines
Fri, Aug 8 - Mon, Aug 18
BIL
Billings
SDF
Louisville
$307 Roundtrip, found 3 days ago
$307
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Aug 8 from Billings to Louisville, returning Mon, Aug 18, priced at $307 found 3 days ago

Alternative airports near Louisville

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Louisville Intl. SDF. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $324
SDF
Louisville Intl.
CheapestClosest
Average driving time to city center9 min
Flights from $324
Flights from Billings (BIL) to Louisville (SDF)
Origin airport
Logan Intl.
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$268
Distance
1277 mi

Billings to Louisville Flights

The cheapest times to fly from Billings to Louisville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Billings to Louisville are during the month of August. You can find some of the cheapest flights from Billings to Louisville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Billings to Louisville

Sunday is one of the best days to book for cheap flights from Billings to Louisville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Billings to Louisville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Billings to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $154 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Billings to Louisville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Billings to Louisville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF) cost?
Discover the latest flight deals from BIL to SDF by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BIL to SDF?
The cheapest flights from BIL to SDF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BIL to SDF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BIL to SDF. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF)?
You'll have to book a flight with a layover if you're traveling from Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from BIL to SDF?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF)?
To arrive at Louisville Intl. Airport (SDF) on schedule, choose a flight that takes off from Logan Intl. Airport (BIL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF) last-minute?
Waiting until just before your trip to book a ticket from BIL to SDF often results in higher prices. While you may come across some last-minute offers, they're not always guaranteed. Keep your travel schedule open for a better chance of getting a bargain.
Is it cheaper to book a BIL to SDF flight and hotel package?
Compared with arranging flights and hotels separately, booking a BIL to SDF flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place takes the hassle out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BIL) to Louisville Intl. Airport (SDF)?
In most instances, you can reschedule or cancel your BIL to SDF flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more details, head to our Customer Service portal.

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*Available to One Key members.