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$149+ Cheap flights from Portland, ME to Louisville (PWM - SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SDF
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Portland to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.

Round-trip from

$237
(Southwest)

One-way from

$149
(Delta)

Popular in

February

Cheapest in

June

Average price

$532
From Portland to Louisville Intl
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One-way flight from Portland to Louisville Intl
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Highest demand for flights based on searches. 7% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Portland to Louisville

Cheapest flights from Portland to Louisville
Explore the most affordable flight options available from Portland to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:50 amPWM - SDF
1 stop6h 40mSouthwest
Wed 9/105:30 amSDF - PWM
1 stop4h 20mSouthwest
Deal found 7/3$237
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/256:01 pmPWM - SDF
1 stop6h 29mAmerican Airlines
Wed 7/307:24 pmSDF - PWM
1 stop4h 35mAmerican Airlines
Deal found 7/2$342
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/256:54 pmPWM - SDF
1 stop5h 38mDelta
Wed 7/306:00 amSDF - PWM
2 stops7h 20mDelta
Deal found 7/2$388
This United Airlines deal was found by Cheapflights users on 7/2. 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 7/176:10 amPWM - SDF
1 stop7h 14mUnited Airlines
Mon 7/218:40 amSDF - PWM
1 stop5h 44mUnited Airlines
Deal found 7/2$427
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1912:38 pmPWM - SDF
1 stop8h 10mMultiple Airlines
Wed 7/234:31 pmSDF - PWM
2 stops19h 44mMultiple Airlines
Deal found 7/2$486

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Portland to Louisville that are best for you.

Fly from

Portland

Fly to

Louisville

Route

Depart

Return

Price

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Mon 9/8

5:50 am-12:30 pm

1 stop6h 40m

Louisville Intl

Wed 9/10

5:30 am-9:50 am

1 stop4h 20m

$237

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Fri 7/25

6:01 pm-12:30 am

1 stop6h 29m

Louisville Intl

Wed 7/30

7:24 pm-11:59 pm

1 stop4h 35m

$342

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Fri 7/25

6:54 pm-12:32 am

1 stop5h 38m

Louisville Intl

Wed 7/30

6:00 am-1:20 pm

2 stops7h 20m

$388

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Thu 7/17

6:10 am-1:24 pm

1 stop7h 14m

Louisville Intl

Mon 7/21

8:40 am-2:24 pm

1 stop5h 44m

$427

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sat 7/19

12:38 pm-8:48 pm

1 stop8h 10m

Louisville Intl

Wed 7/23

4:31 pm-12:15 pm

2 stops19h 44m

$486

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Tue 7/15

12:53 pm-1:16 pm

2 stops24h 23m

Louisville Intl

Fri 7/18

8:35 pm-5:38 pm

3 stops21h 03m

$960

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 7/30

6:05 am-11:37 am

1 stop5h 32m

$149

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Mon 9/15

5:10 pm-11:15 pm

1 stop6h 05m

$150

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sun 8/17

5:35 am-10:27 am

1 stop4h 52m

$163

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 7/30

5:30 am-12:10 pm

2 stops6h 40m

$185

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 11 results
1
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Best time to book a flight from Portland to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Louisville

What is the cheapest month to book a flight from Portland, Maine to Louisville?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Louisville (average of $299). Flying from Portland, Maine to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Breeze Airways, Southwest, and Delta from Portland to Louisville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
183 reviews

Boarding

8.3

Food

6.8

Crew

8.8

Comfort

8.2

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
183 reviews
Breeze Airways
8.1
Very good
183 reviews

Boarding

8.3

Food

6.8

Crew

8.8

Comfort

8.2

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,266 reviews
Breeze Airways
8.1
Very good
183 reviews

Boarding

8.3

Food

6.8

Crew

8.8

Comfort

8.2

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,982 reviews
Breeze Airways
8.1
Very good
183 reviews

Boarding

8.3

Food

6.8

Crew

8.8

Comfort

8.2

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
United Airlines
7.4
Good
8,861 reviews
Breeze Airways
8.1
Very good
183 reviews

Boarding

8.3

Food

6.8

Crew

8.8

Comfort

8.2

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
American Airlines
7.2
Good
10,000 reviews
Breeze Airways
8.1
Very good
183 reviews

Boarding

8.3

Food

6.8

Crew

8.8

Comfort

8.2

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from Portland to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Portland, Maine to Louisville round-trip?

    Cheapflights users have booked flights from Portland, Maine to Louisville round-trip from $237. Other airlines that can offer you cheap pricing are American Airlines, from $342, and Delta, from $388. Southwest is 42% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Portland, Maine to Louisville one-way?

    $149 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $150 and $163, respectively.

  • Can I find deals for flights from Portland to Louisville that include hotel bookings?

    Yes. In addition to deals on Portland to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Louisville.

  • Can I find deals for business class flights from Portland to Louisville?

    Yes. Cheapflights offers flight deals from Portland to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Louisville (average of $299). Flying from Portland, Maine to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top 4 airlines flying from Portland to Louisville

Discover the top 4 airlines that operate flights from Portland to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$263Average$364FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$369FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$281Average$457FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$291Average$417FlexibilityNo cancel feeOn-time63%

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