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$281+ Cheap flights from Portland, ME to Louisville (PWM - SDF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SDF
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$281
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$424
Provider with most accurate pricing for Portland-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-Louisville Intl flights.
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From Portland to Louisville Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/712:08 pmPWM - SDF
1 stop10h 53mAmerican Airlines
Tue 5/133:25 pmSDF - PWM
1 stop7h 40mAmerican Airlines
Deal found 3/24$281
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:05 amPWM - SDF
1 stop5h 35mDelta
Sat 5/107:05 amSDF - PWM
1 stop5h 30mDelta
Deal found 3/24$297
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:15 amPWM - SDF
2 stops9h 20mSouthwest
Fri 5/96:15 pmSDF - PWM
1 stop5h 05mSouthwest
Deal found 3/24$322
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 4/1811:45 amPWM - SDF
1 stop5h 30mUnited Airlines
Mon 4/212:06 pmSDF - PWM
1 stop5h 38mUnited Airlines
Deal found 3/24$894
This KAYAK deal was found by Cheapflights users on 3/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:18 pmPWM - SDF
2 stops25h 02mBreeze Airways
Fri 5/98:35 pmSDF - PWM
3 stops21h 03mBreeze Airways
Deal found 3/24$949

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 March 25, 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 5/7

12:08 pm-11:01 pm

1 stop10h 53m

Louisville Intl

Tue 5/13

3:25 pm-11:05 pm

1 stop7h 40m

$281

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 5/7

6:05 am-11:40 am

1 stop5h 35m

Louisville Intl

Sat 5/10

7:05 am-12:35 pm

1 stop5h 30m

$297

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 5/7

6:15 am-3:35 pm

2 stops9h 20m

Louisville Intl

Fri 5/9

6:15 pm-11:20 pm

1 stop5h 05m

$322

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Fri 4/18

11:45 am-5:15 pm

1 stop5h 30m

Louisville Intl

Mon 4/21

2:06 pm-7:44 pm

1 stop5h 38m

$894

PortlandLouisville

PWM - SDF

PWMSDF

Portland

Wed 5/7

6:18 pm-7:20 pm

2 stops25h 02m

Louisville Intl

Fri 5/9

8:35 pm-5:38 pm

3 stops21h 03m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Portland to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Louisville in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 25, 2025.
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Crew

8.6

Comfort

8.0

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Crew

8.6

Comfort

8.0

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Crew

8.6

Comfort

8.0

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Breeze Airways
8.0
Very good
156 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Crew

8.6

Comfort

8.0

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Crew

8.6

Comfort

8.0

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Crew

8.6

Comfort

8.0

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $281. Other airlines that can offer you cheap pricing are Delta, from $297, and Southwest, from $317. American Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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
Jeffersonville
Corydon
Elizabethtown
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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$286Average$387FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$291Average$387FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$296Average$457FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$306Average$427FlexibilityNo cancel feeOn-time71%
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