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$301+ Cheap flights from Louisville to Portland (SDF - PDX)

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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — PDX
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Find cheap flights from Louisville to Portland 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

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Cheapflights Tip: The best prices from Louisville Intl to Portland are usually found in August or January, booked 77 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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 12/313:18 pmSDF - PDX
1 stop8h 49mUnited Airlines
Sun 1/411:59 pmPDX - SDF
1 stop9h 07mUnited Airlines
Deal found 12/16$612
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/308:05 amSDF - PDX
1 stop9h 07mAmerican Airlines
Thu 1/17:00 amPDX - SDF
1 stop9h 42mAmerican Airlines
Deal found 12/16$732
This Southwest deal was found by Cheapflights users on 12/16. 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 12/301:30 pmSDF - PDX
2 stops11h 10mSouthwest
Thu 1/110:05 amPDX - SDF
1 stop10h 40mSouthwest
Deal found 12/16$815
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:05 amSDF - PDX
1 stop9h 07mAmerican Airlines
Mon 12/295:33 amPDX - SDF
1 stop8h 55mAmerican Airlines
Deal found 12/15$857
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:00 pmSDF - PDX
2 stops11h 58mUnited Airlines
Mon 12/297:10 amPDX - SDF
1 stop7h 18mUnited Airlines
Deal found 12/15$862
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/309:55 amSDF - PDX
2 stops14h 12mUnited Airlines
Thu 1/15:00 amPDX - SDF
2 stops12h 32mUnited Airlines
Deal found 12/16$873
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:49 pmSDF - PDX
2 stops18h 55mAlaska Airlines
Mon 12/297:07 amPDX - SDF
1 stop7h 12mAlaska Airlines
Deal found 12/17$992

Find 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 (PDX). 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$301
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$557
Provider with most accurate pricing for Louisville Intl-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Portland flights.
Search Deals
From Louisville Intl to Portland
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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 - PDX

SDFPDX

Louisville Intl

Tue 1/13

6:00 am-10:35 am

1 stop7h 35m

Portland

Tue 1/20

6:00 am-5:30 pm

1 stop8h 30m

$316

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 1/13

7:40 am-1:21 pm

1 stop8h 41m

Portland

Tue 1/20

6:00 am-5:33 pm

1 stop8h 33m

$316

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 1/20

1:45 pm-9:49 pm

1 stop11h 04m

Portland

Wed 1/21

7:00 am-5:37 pm

1 stop7h 37m

$316

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Wed 1/14

1:32 pm-8:27 pm

1 stop9h 55m

Portland

Sun 1/18

11:59 pm-10:13 am

1 stop7h 14m

$316

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 1/20

5:10 pm-10:30 pm

1 stop8h 20m

Portland

Wed 1/21

6:00 am-5:30 pm

1 stop8h 30m

$316

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 3/3

12:00 pm-4:00 pm

1 stop7h 00m

Portland

Tue 3/10

11:59 pm-10:09 am

1 stop7h 10m

$331

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Thu 1/8

1:32 pm-8:22 pm

1 stop9h 50m

Portland

Mon 1/12

6:00 am-6:39 pm

1 stop9h 39m

$351

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Sat 1/17

6:23 am-12:46 pm

1 stop9h 23m

Portland

Wed 1/21

7:10 am-11:06 pm

2 stops12h 56m

$359

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Thu 5/28

6:00 am-5:38 pm

2 stops14h 38m

$319

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Sun 12/28

5:05 am-5:50 pm

3 stops39h 45m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 16 results
1
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Compare providers for flights from Louisville to Portland

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 Louisville to Portland in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Louisville-Portland flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Louisville-Portland flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Louisville-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Portland flights, Cheapflights users trust eDreams the most. eDreams 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 Louisville-Portland 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 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?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Portland. Price data was last updated on December 12, 2025.

The best time to book flights from Louisville to Portland is 40 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?

Currently, August is the cheapest month in which you can book a flight from Louisville to Portland (average of $96). Flying from Louisville to Portland in January is currently the most expensive (average of $249). 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 PDX?

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 December 18, 2025.

It’s optimal to fly from Louisville to Portland at noon. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from Louisville to Portland?

Use this chart to determine the cheapest time to fly round-trip from Louisville to Portland. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Louisville to Portland flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Louisville to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,091 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • How long is the flight from Louisville to Portland?

    Southwest, American Airlines, and United Airlines can get you from Louisville to Portland in just under 7h 35m. Your travel time can differ by up to 3h 29m. Louisville and Portland are separated by a distance of 1944 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Delta ($149), United Airlines ($238), and Southwest ($298) offers the cheapest pricing from Louisville to Portland. Delta is currently priced 68% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $142. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from Louisville to Portland for a low price.

  • 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?

    Currently, August is the cheapest month in which you can book a flight from Louisville to Portland (average of $96). Flying from Louisville to Portland in January is currently the most expensive (average of $249). 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
Vancouver
Seaside
Clackamas
Lincoln City
Longview
Lake Oswego
Beaverton
McMinnville
Hillsboro
Troutdale
Cannon Beach
Long Beach
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Pacific City
Tillamook
Gresham

Browse thousands of different options on Cheapflights for your next trip

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$245Average$484FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$292Average$498FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$298Average$503FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$299Average$431FlexibilityNo cancel feeOn-time71%

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