$89 Cheap Flights from Baltimore (BWI) to Louisville (SDF)

View $89 flight on Mon, Oct 13, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Louisville Intl. Airport (SDF)

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Cheap Flights from Baltimore to Louisville (BWI-SDF)

Prices were available within the past 7 days and start at $89 for one-way flights and $177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Sep 27 - Mon, Sep 29
BWI
Baltimore
SDF
Louisville
$177 Roundtrip, found 4 hours ago
$177
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Sat, Sep 27 from Baltimore to Louisville, returning Mon, Sep 29, priced at $177 found 4 hours ago
Delta
Sat, Sep 27 - Mon, Sep 29
BWI
Baltimore
SDF
Louisville
$182 Roundtrip, found 4 hours ago
$182
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Sep 27 from Baltimore to Louisville, returning Mon, Sep 29, priced at $182 found 4 hours ago
United
Sat, Nov 1 - Wed, Nov 5
BWI
Baltimore
SDF
Louisville
$183 Roundtrip, found 6 days ago
$183
Roundtrip
found 6 days ago
Select United flight, departing Sat, Nov 1 from Baltimore to Louisville, returning Wed, Nov 5, priced at $183 found 6 days ago
Southwest Airlines
Wed, Oct 15 - Sun, Oct 19
BWI
Baltimore
SDF
Louisville
$186 Roundtrip, just found
$186
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Oct 15 from Baltimore to Louisville, returning Sun, Oct 19, priced at $186 just found
Delta
Tue, Sep 16 - Tue, Sep 23
BWI
Baltimore
SDF
Louisville
$187 Roundtrip, just found
$187
Roundtrip
just found
Select Delta flight, departing Tue, Sep 16 from Baltimore to Louisville, returning Tue, Sep 23, priced at $187 just found
United
Sat, Sep 27 - Tue, Sep 30
BWI
Baltimore
SDF
Louisville
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 27 from Baltimore to Louisville, returning Tue, Sep 30, priced at $187 found 1 day ago
United
Fri, Oct 31 - Mon, Nov 3
BWI
Baltimore
SDF
Louisville
$187 Roundtrip, found 6 days ago
$187
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 31 from Baltimore to Louisville, returning Mon, Nov 3, priced at $187 found 6 days ago
Delta
Wed, Oct 8 - Sat, Oct 11
BWI
Baltimore
SDF
Louisville
$188 Roundtrip, found 7 hours ago
$188
Roundtrip
found 7 hours ago
Select Delta flight, departing Wed, Oct 8 from Baltimore to Louisville, returning Sat, Oct 11, priced at $188 found 7 hours ago
American Airlines
Tue, Oct 28 - Sun, Nov 2
BWI
Baltimore
SDF
Louisville
$191 Roundtrip, found 5 days ago
$191
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct 28 from Baltimore to Louisville, returning Sun, Nov 2, priced at $191 found 5 days ago
Spirit Airlines
Sat, Aug 23 - Thu, Aug 28
BWI
Baltimore
SDF
Louisville
$210 Roundtrip, found 4 hours ago
$210
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Sat, Aug 23 from Baltimore to Louisville, returning Thu, Aug 28, priced at $210 found 4 hours ago

Find the cheapest month to fly from Baltimore (BWI) to Louisville (SDF)

August is typically the cheapest month to fly

From $137 - $559 per traveler.

Graph displaying average flight prices per month

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 $259
SDF
Louisville Intl.
CheapestClosest
Average driving time to city center9 min
Flights from $259
Flights from Baltimore (BWI) to Louisville (SDF)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$177
Distance
493 mi
Average flight time
1 hour 42 mins

Baltimore to Louisville Flights

The cheapest times to fly from Baltimore 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 Baltimore to Louisville are during the month of September. You can find some of the cheapest flights from Baltimore to Louisville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Louisville

Sunday is one of the best days to book for cheap flights from Baltimore 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 Baltimore 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 Baltimore to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $89 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 Baltimore 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 Baltimore 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF) cost?
You can book cheap return flights starting from $177 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving BWI on August 18 2025 and touching down at SDF. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from BWI to SDF?
The cheapest flights from BWI 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.
Which airlines fly direct from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
Take a nonstop flight with Southwest Airlines and travel straight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF).
What is the cheapest airline that flies from BWI to SDF?
With prices as low as $89 for a one-way journey from BWI to SDF, Southwest Airlines is currently the cheapest carrier flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BWI on September 23 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
When jetting out of Baltimore Washington Intl. Thurgood Marshall Airport (BWI), you'll have a choice from an average of 2 daily nonstop flights to Louisville Intl. Airport (SDF).
What are the most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
Flights between BWI and SDF are busiest at 11 AM. If you want a more relaxed atmosphere and potentially cheaper prices, look for a departure that's outside typical rush times.
What day of the week has the most flights from BWI to SDF?
Jet off on a Friday if you're after the best choice of flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF).
What is the earliest flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
Hop on the earliest flight at around 11:00AM UTC-5, leaving from Baltimore Washington Intl. Thurgood Marshall Airport (BWI). You'll be flying for roughly 1h 55m, reaching Louisville Intl. Airport (SDF) at approximately 12:55PM UTC-5.
How long does it take to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
It takes about 1 hour and 55 minutes to cover the 490 mi from BWI to SDF.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
To reach Louisville Intl. Airport (SDF) without delays, opt for a flight that takes off from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) before 3 PM. The likelihood 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.
What airports do you fly into for Louisville from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Louisville Intl. Airport (SDF) is the only airport in Louisville with direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Browse the options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF) last-minute?
Booking your flight from BWI to SDF shortly before your getaway is typically more expensive. However, if there's some wiggle room with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a BWI to SDF flight and hotel package?
Compared with arranging flights and hotels separately, booking a BWI to SDF flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of planning your trip. Simply pick your flights and select from our wide range of hotels, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Louisville Intl. Airport (SDF)?
Typically, you can cancel or modify your BWI to SDF flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want more details, go to our Customer Service portal.

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