$178+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SDF
Jun 14 — Jun 211
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Louisville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Louisville
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Best
Last-minute
One-way
Cheapest flights from Portland to LouisvilleExplore 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 May 15, 2026.
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 May 15, 2026.
This Delta deal was found by Cheapflights users on 5/10. 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.
Tue 6/96:00 am
PWM
- SDF
1 stop5h 53m
Delta
Mon 6/1510:00 am
SDF
- PWM
1 stop7h 52m
Delta
Deal found 5/10![Delta logo]()
$365
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 5/277:15 am
PWM
- SDF
1 stop7h 37m
American Airlines
Wed 6/36:56 pm
SDF
- PWM
1 stop5h 45m
American Airlines
Deal found 5/11![American Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:15 am
PWM
- SDF
1 stop5h 08m
United Airlines
Tue 6/211:04 am
SDF
- PWM
2 stops8h 23m
United Airlines
Deal found 5/11![United Airlines logo]()
$386
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 6/25:57 pm
PWM
- SDF
1 stop6h 31m
American Airlines
Sun 6/77:18 pm
SDF
- PWM
1 stop5h 24m
American Airlines
Deal found 5/12![American Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 5/13. 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 8/65:15 am
PWM
- SDF
1 stop5h 08m
United Airlines
Sun 8/96:00 am
SDF
- PWM
2 stops7h 25m
United Airlines
Deal found 5/13![United Airlines logo]()
$396
This Southwest deal was found by Cheapflights users on 5/13. 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.
Thu 6/113:10 pm
PWM
- SDF
2 stops7h 15m
Southwest
Wed 6/174:15 pm
SDF
- PWM
1 stop6h 40m
Southwest
Deal found 5/13![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 5/272:24 pm
PWM
- SDF
1 stop8h 03m
American Airlines
Fri 5/296:25 pm
SDF
- PWM
1 stop5h 26m
American Airlines
Deal found 5/11![American Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:25 pm
PWM
- SDF
1 stop5h 24m
United Airlines
Wed 6/36:00 am
SDF
- PWM
2 stops7h 25m
United Airlines
Deal found 5/11![United Airlines logo]()
$417
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Sun 5/315:57 pm
PWM
- SDF
1 stop6h 31m
American Airlines
Wed 6/36:25 pm
SDF
- PWM
1 stop5h 26m
American Airlines
Deal found 5/12![American Airlines logo]()
$421
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Mon 8/105:13 pm
PWM
- SDF
1 stop4h 25m
American Airlines
Thu 8/138:40 am
SDF
- PWM
1 stop6h 55m
American Airlines
Deal found 5/13![American Airlines logo]()
$424
This Southwest deal was found by Cheapflights users on 5/12. 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 6/112:45 pm
PWM
- SDF
1 stop4h 05m
Southwest
Mon 6/85:50 am
SDF
- PWM
1 stop3h 55m
Southwest
Deal found 5/12![Southwest logo]()
$426
This Southwest deal was found by Cheapflights users on 5/10. 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.
Tue 6/95:30 am
PWM
- SDF
2 stops10h 05m
Southwest
Mon 6/153:35 pm
SDF
- PWM
2 stops8h 30m
Southwest
Deal found 5/10![Southwest logo]()
$427
Best flights from Portland to LouisvilleDiscover carefully curated flight deals from Portland to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 15, 2026.
Discover carefully curated flight deals from Portland to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 15, 2026.
This Delta deal was found by Cheapflights users on 5/13. 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.
Thu 6/116:00 am
PWM
- SDF
1 stop4h 58m
Delta
Wed 6/175:59 pm
SDF
- PWM
1 stop5h 30m
Delta
Deal found 5/13![Delta logo]()
$365
This United Airlines deal was found by Cheapflights users on 5/10. 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 6/96:00 am
PWM
- SDF
2 stops8h 37m
United Airlines
Mon 6/156:00 am
SDF
- PWM
1 stop4h 07m
United Airlines
Deal found 5/10![United Airlines logo]()
$386
This Southwest deal was found by Cheapflights users on 5/10. 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.
Tue 6/95:30 am
PWM
- SDF
2 stops10h 05m
Southwest
Mon 6/153:35 pm
SDF
- PWM
2 stops8h 30m
Southwest
Deal found 5/10![Southwest logo]()
$427
This Delta deal was found by Cheapflights users on 5/10. 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.
Tue 6/96:00 am
PWM
- SDF
1 stop5h 53m
Delta
Mon 6/1510:00 am
SDF
- PWM
1 stop7h 52m
Delta
Deal found 5/10![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 5/13. 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.
Tue 6/26:10 am
PWM
- SDF
1 stop6h 30m
Southwest
Mon 6/85:50 am
SDF
- PWM
1 stop3h 55m
Southwest
Deal found 5/13![Southwest logo]()
$431
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Mon 6/15:15 am
PWM
- SDF
1 stop5h 08m
United Airlines
Sat 6/612:20 pm
SDF
- PWM
1 stop6h 05m
United Airlines
Deal found 5/12![United Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 5/10. 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 8/255:03 pm
PWM
- SDF
1 stop5h 25m
United Airlines
Wed 8/266:00 am
SDF
- PWM
1 stop4h 04m
United Airlines
Deal found 5/10![United Airlines logo]()
$435
Last-minute flights from Portland to LouisvilleDiscover last-minute flight deals from Portland to Louisville. Data last updated May 15, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Louisville. Data last updated May 15, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 5/277:15 am
PWM
- SDF
1 stop7h 37m
American Airlines
Wed 6/36:56 pm
SDF
- PWM
1 stop5h 45m
American Airlines
Deal found 5/11![American Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Wed 5/272:24 pm
PWM
- SDF
1 stop8h 03m
American Airlines
Fri 5/296:25 pm
SDF
- PWM
1 stop5h 26m
American Airlines
Deal found 5/11![American Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:25 pm
PWM
- SDF
1 stop5h 24m
United Airlines
Wed 6/36:00 am
SDF
- PWM
2 stops7h 25m
United Airlines
Deal found 5/11![United Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:15 am
PWM
- SDF
1 stop5h 08m
United Airlines
Tue 6/211:04 am
SDF
- PWM
2 stops8h 23m
United Airlines
Deal found 5/11![United Airlines logo]()
$386
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Sun 5/315:57 pm
PWM
- SDF
1 stop6h 31m
American Airlines
Wed 6/36:25 pm
SDF
- PWM
1 stop5h 26m
American Airlines
Deal found 5/12![American Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 5/12. 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 6/112:45 pm
PWM
- SDF
1 stop4h 05m
Southwest
Mon 6/85:50 am
SDF
- PWM
1 stop3h 55m
Southwest
Deal found 5/12![Southwest logo]()
$426
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Mon 6/15:15 am
PWM
- SDF
1 stop5h 08m
United Airlines
Sat 6/612:20 pm
SDF
- PWM
1 stop6h 05m
United Airlines
Deal found 5/12![United Airlines logo]()
$431
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 6/25:57 pm
PWM
- SDF
1 stop6h 31m
American Airlines
Sun 6/77:18 pm
SDF
- PWM
1 stop5h 24m
American Airlines
Deal found 5/12![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 5/10. 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.
Tue 6/96:00 am
PWM
- SDF
1 stop5h 53m
Delta
Mon 6/1510:00 am
SDF
- PWM
1 stop7h 52m
Delta
Deal found 5/10![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 5/10. 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.
Tue 6/95:30 am
PWM
- SDF
2 stops10h 05m
Southwest
Mon 6/153:35 pm
SDF
- PWM
2 stops8h 30m
Southwest
Deal found 5/10![Southwest logo]()
$427
This Southwest deal was found by Cheapflights users on 5/13. 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.
Thu 6/113:10 pm
PWM
- SDF
2 stops7h 15m
Southwest
Wed 6/174:15 pm
SDF
- PWM
1 stop6h 40m
Southwest
Deal found 5/13![Southwest logo]()
$406
One-way flights from Portland to LouisvilleSearch for one-way flight options from Portland to Louisville. Find affordable one-way fares based on user searches. Data last updated May 15, 2026.
Search for one-way flight options from Portland to Louisville. Find affordable one-way fares based on user searches. Data last updated May 15, 2026.
This United Airlines deal was found by Cheapflights users on 5/12. 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 6/25:15 am
PWM
- SDF
1 stop5h 08m
United Airlines
Deal found 5/12![United Airlines logo]()
$178
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Mon 6/83:05 pm
PWM
- SDF
1 stop8h 03m
American Airlines
Deal found 5/12![American Airlines logo]()
$188
This Southwest deal was found by Cheapflights users on 5/15. 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.
Tue 9/85:45 am
PWM
- SDF
2 stops9h 30m
Southwest
Deal found 5/15![Southwest logo]()
$193
This American Airlines deal was found by Cheapflights users on 5/13. 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 5/277:15 am
PWM
- SDF
1 stop7h 37m
American Airlines
Deal found 5/13![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Sun 6/75:58 pm
PWM
- SDF
1 stop6h 30m
American Airlines
Deal found 5/12![American Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:00 am
PWM
- SDF
2 stops25h 46m
Breeze Airways
Deal found 5/12![Breeze Airways logo]()
$222
This Southwest deal was found by Cheapflights users on 5/12. 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 6/85:35 am
PWM
- SDF
2 stops9h 20m
Southwest
Deal found 5/12![Southwest logo]()
$229
This United Airlines deal was found by Cheapflights users on 5/13. 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 8/65:15 am
PWM
- SDF
2 stops11h 48m
United Airlines
Deal found 5/13![United Airlines logo]()
$233
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Sun 6/75:15 am
PWM
- SDF
2 stops8h 20m
United Airlines
Deal found 5/12![United Airlines logo]()
$240
This United Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 5/275:15 am
PWM
- SDF
2 stops11h 34m
United Airlines
Deal found 5/13![United Airlines logo]()
$249
Find 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 May 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $365 (Delta) |
One-way from | $178 (United Airlines) |
Popular in | September |
Cheapest in | June |
Average price | $406 |
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 May 15, 2026.
Use the filters below to find and compare flights from Portland to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Thu 6/11
6:00 am-10:58 am
1 stop4h 58m
Louisville Intl
Wed 6/17
5:59 pm-11:29 pm
1 stop5h 30m
$365
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Tue 6/9
6:00 am-11:53 am
1 stop5h 53m
Louisville Intl
Mon 6/15
10:00 am-5:52 pm
1 stop7h 52m
$365
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Tue 6/9
6:00 am-2:37 pm
2 stops8h 37m
Louisville Intl
Mon 6/15
6:00 am-10:07 am
1 stop4h 07m
$386
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Tue 6/9
5:30 am-3:35 pm
2 stops10h 05m
Louisville Intl
Mon 6/15
3:35 pm-12:05 am
2 stops8h 30m
$427
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Tue 6/2
6:10 am-12:40 pm
1 stop6h 30m
Louisville Intl
Mon 6/8
5:50 am-9:45 am
1 stop3h 55m
$431
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Mon 6/1
5:15 am-10:23 am
1 stop5h 08m
Louisville Intl
Sat 6/6
12:20 pm-6:25 pm
1 stop6h 05m
$431
Quickest round-trip
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Tue 8/25
5:03 pm-10:28 pm
1 stop5h 25m
Louisville Intl
Wed 8/26
6:00 am-10:04 am
1 stop4h 04m
$435
Cheapest one-way
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Tue 6/2
2:20 pm-11:56 pm
2 stops9h 36m
$183
Quickest one-way
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Mon 9/14
5:55 am-10:00 am
1 stop4h 05m
$188
PortlandLouisville
PWM - SDF
PWMSDF
Portland
Wed 5/27
7:15 am-2:52 pm
1 stop7h 37m
$204
Showing 1-10 of 12 resultsSorted by cheapest first
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
PWM-SDF
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
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 May 15, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines 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.
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$248 | Average$379 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$395 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$317 | Average$406 | FlexibilityNo cancel fee | On-time69% |