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$136+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SDF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$271
(Delta)

One-way from

$136
(American Airlines)

Popular in

February

Cheapest in

June

Average price

$316
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. 8% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 9/106:00 amPWM - SDF
1 stop6h 51mDelta
Mon 9/155:45 pmSDF - PWM
1 stop6h 18mDelta
Deal found 6/11$271
This Southwest deal was found by Cheapflights users on 6/10. 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.
Sat 11/155:40 amPWM - SDF
1 stop6h 55mSouthwest
Thu 11/205:30 amSDF - PWM
1 stop9h 25mSouthwest
Deal found 6/10$289
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/85:35 amPWM - SDF
1 stop4h 52mUnited Airlines
Tue 7/152:10 pmSDF - PWM
1 stop7h 51mUnited Airlines
Deal found 6/10$297
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/86:30 amPWM - SDF
1 stop7h 42mAmerican Airlines
Mon 8/114:57 pmSDF - PWM
1 stop5h 04mAmerican Airlines
Deal found 6/11$319
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Sun 7/1312:46 pmPWM - SDF
1 stop24h 26mMultiple Airlines
Wed 7/163:45 pmSDF - PWM
2 stops28h 27mMultiple Airlines
Deal found 6/10$396
This KAYAK deal was found by Cheapflights users on 6/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1511:21 amPWM - SDF
3 stops45h 37mBreeze Airways
Thu 11/202:55 pmSDF - PWM
2 stops22h 56mBreeze Airways
Deal found 6/10$741

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 June 12, 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

Wed 9/10

6:00 am-12:51 pm

1 stop6h 51m

Louisville Intl

Mon 9/15

5:45 pm-12:03 am

1 stop6h 18m

$271

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sat 11/15

5:40 am-12:35 pm

1 stop6h 55m

Louisville Intl

Thu 11/20

5:30 am-2:55 pm

1 stop9h 25m

$289

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Tue 7/8

5:35 am-10:27 am

1 stop4h 52m

Louisville Intl

Tue 7/15

2:10 pm-10:01 pm

1 stop7h 51m

$297

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Fri 8/8

6:30 am-2:12 pm

1 stop7h 42m

Louisville Intl

Mon 8/11

4:57 pm-10:01 pm

1 stop5h 04m

$319

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sun 7/13

12:46 pm-1:12 pm

1 stop24h 26m

Louisville Intl

Wed 7/16

3:45 pm-8:12 pm

2 stops28h 27m

$396

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sat 11/15

11:21 am-8:58 am

3 stops45h 37m

Louisville Intl

Thu 11/20

2:55 pm-1:51 pm

2 stops22h 56m

$741

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Mon 9/15

5:10 pm-11:15 pm

1 stop6h 05m

$136

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 7/30

6:00 am-11:45 am

1 stop5h 45m

$149

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Mon 9/15

3:30 pm-11:30 pm

2 stops8h 00m

$194

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Sun 7/20

12:52 pm-1:55 pm

2 stops25h 03m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 11 results
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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.

Rainfall in Louisville by month

Plan your trip to Louisville by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

Plan your trip to Louisville by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Louisville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 June 12, 2025.
See what other customers who have flown with Breeze Airways, Southwest and Delta from Portland to Louisville have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Overall

8.1

Food

6.7

Crew

8.8

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
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Overall

8.1

Food

6.7

Crew

8.8

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
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Overall

8.1

Food

6.7

Crew

8.8

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
7,946 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Overall

8.1

Food

6.7

Crew

8.8

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
8,790 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Overall

8.1

Food

6.7

Crew

8.8

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
178 reviews

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Overall

8.1

Food

6.7

Crew

8.8

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 $271. Other airlines that can offer you cheap pricing are Southwest, from $289, and United Airlines, from $297. Delta is 33% 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?

    $136 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $149 and $194, 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$263Average$371FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$369FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$291Average$417FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$296Average$457FlexibilityNo cancel feeOn-time69%

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