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

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — PWM
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to Portland are usually found in August or April, booked 73 days in advance, depart on a Monday or Sunday and return on a Wednesday

Cheap flight deals from Louisville to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Portland (PWM). 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 junio 12, 2025.

Round-trip from

$297
(Delta)

One-way from

$149
(Delta)

Popular in

March

Cheapest in

August

Average price

$406
From Louisville Intl to Portland
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One-way flight from Louisville Intl to Portland
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Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 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 Louisville to Portland

Cheapest flights from Louisville to Portland
Explore the most affordable flight options available from Louisville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/9. 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.
jue. 9/117:31 pmSDF - PWM
1 stop4h 21mAmerican Airlines
sáb. 9/205:24 pmPWM - SDF
1 stop4h 58mAmerican Airlines
Deal found 6/9$284
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/84:39 pmSDF - PWM
1 stop6h 50mDelta
sáb. 7/196:54 pmPWM - SDF
1 stop5h 38mDelta
Deal found 6/10$297
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.
jue. 8/144:20 pmSDF - PWM
1 stop6h 50mSouthwest
dom. 8/175:35 amPWM - SDF
1 stop6h 50mSouthwest
Deal found 6/10$339
This United Airlines deal was found by Cheapflights users on 6/9. 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.
mar. 7/86:00 amSDF - PWM
2 stops7h 20mUnited Airlines
lun. 7/145:35 amPWM - SDF
1 stop4h 52mUnited Airlines
Deal found 6/9$361
This Mytrip deal was found by Cheapflights users on 6/9. 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.
vie. 6/271:57 pmSDF - PWM
3 stops45h 48mMultiple Airlines
lun. 6/3012:16 pmPWM - SDF
2 stops30h 19mMultiple Airlines
Deal found 6/9$537
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/117:42 pmSDF - PWM
3 stops18h 09mBreeze Airways
sáb. 9/202:21 pmPWM - SDF
2 stops28h 41mBreeze Airways
Deal found 6/11$661

Cheapflights Fare Finder

Customize your flight search to find flights from Louisville to Portland 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 junio 12, 2025.
Use the filters below to find and compare flights from Louisville to Portland that are best for you.

Fly from

Louisville

Fly to

Portland

Route

Depart

Return

Price

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mar. 7/8

4:39 pm-11:29 pm

1 stop6h 50m

Portland

sáb. 7/19

6:54 pm-12:32 am

1 stop5h 38m

$297

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

lun. 8/4

8:20 am-1:44 pm

1 stop5h 24m

Portland

vie. 8/8

6:30 am-2:12 pm

1 stop7h 42m

$319

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

jue. 8/14

4:20 pm-11:10 pm

1 stop6h 50m

Portland

dom. 8/17

5:35 am-12:25 pm

1 stop6h 50m

$339

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mar. 7/8

6:00 am-1:20 pm

2 stops7h 20m

Portland

lun. 7/14

5:35 am-10:27 am

1 stop4h 52m

$361

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

vie. 6/27

1:57 pm-11:45 am

3 stops45h 48m

Portland

lun. 6/30

12:16 pm-6:35 pm

2 stops30h 19m

$537

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

dom. 7/6

8:44 pm-2:07 pm

3 stops17h 23m

Portland

sáb. 7/12

6:23 pm-3:19 pm

1 stop20h 56m

$704

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

vie. 7/4

4:39 pm-11:30 pm

1 stop6h 51m

$149

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

vie. 8/22

7:37 pm-11:47 pm

1 stop4h 10m

$169

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

jue. 7/3

5:40 pm-12:05 am

1 stop6h 25m

$214

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

vie. 8/22

10:24 am-7:27 pm

3 stops33h 03m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 results
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Best time to book a flight from Louisville to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Louisville 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 Louisville to Portland

How far ahead should I book a flight from Louisville to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Portland. Price data was last updated on June 9, 2025.

The best time to book flights from Louisville to Portland, Maine is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Louisville to Portland, Maine (average of $296). Flying from Louisville to Portland, Maine in July is currently the most expensive (average of $394). 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.

What is the cheapest time of day to fly from SDF to PWM?

Find hourly flight availability from Louisville to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 25% on flights from Louisville to Portland, Maine by exploring options for tickets in the evening.

Rainfall in Portland by month

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

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

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

If weather is an important factor for your trip to Portland, Maine, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Louisville to Portland, such as Breeze Airways, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Food

6.7

Entertainment

6.6

Boarding

8.3

Overall

8.1

Comfort

8.2

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

Food

6.7

Entertainment

6.6

Boarding

8.3

Overall

8.1

Comfort

8.2

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

Food

6.7

Entertainment

6.6

Boarding

8.3

Overall

8.1

Comfort

8.2

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

Food

6.7

Entertainment

6.6

Boarding

8.3

Overall

8.1

Comfort

8.2

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

Food

6.7

Entertainment

6.6

Boarding

8.3

Overall

8.1

Comfort

8.2

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

Food

6.7

Entertainment

6.6

Boarding

8.3

Overall

8.1

Comfort

8.2

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 Louisville to Portland. 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 Louisville to Portland, Maine round-trip?

    Cheapflights users have booked flights from Louisville to Portland, Maine round-trip from $297. Other airlines that can offer you cheap pricing are American Airlines, from $319, and Southwest, from $339. Delta is 31% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Louisville to Portland, Maine are Delta ($149), American Airlines ($169), and Southwest ($214).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville to Portland 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 Louisville to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Louisville to Portland, Maine (average of $296). Flying from Louisville to Portland, Maine in July is currently the most expensive (average of $394). 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
North Conway
Bath
Brunswick
Auburn
Conway
Lewiston

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Top 4 airlines flying from Louisville to Portland

Discover the top 4 airlines that operate flights from Louisville to Portland. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$283Average$367FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$378FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$296Average$426FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$386Average$553FlexibilityNo cancel feeOn-time69%

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