Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Louisville to Portland from $149

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Portland departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Louisville to Portland

Cheap round-trip flights

Delta Logo
5:00 pm - 11:09 pmSDF-PWM
6h 09m1 stop
Delta Logo
5:42 am - 12:49 pmPWM-SDF
7h 07m1 stop
$297Delta
Find Deal
mar., oct. 7 - mié., oct. 8
Delta Logo
5:00 pm - 11:09 pmSDF-PWM
6h 09m1 stop
Delta Logo
5:42 am - 1:53 pmPWM-SDF
8h 11m2 stops
$302Delta
Find Deal
mar., oct. 7 - mié., oct. 8
Delta Logo
12:57 pm - 11:54 pmSDF-PWM
10h 57m2 stops
Delta Logo
6:00 am - 2:04 pmPWM-SDF
8h 04m2 stops
$307Delta
Find Deal
mié., nov. 12 - mié., nov. 19
American Airlines Logo
5:39 am - 11:39 amSDF-PWM
6h 00m1 stop
American Airlines Logo
5:47 am - 10:41 amPWM-SDF
4h 54m1 stop
$350American Airlines
Find Deal
jue., feb. 26 - dom., mar. 1
Delta Logo
5:00 pm - 11:09 pmSDF-PWM
6h 09m1 stop
Delta Logo
5:42 am - 12:49 pmPWM-SDF
7h 07m1 stop
$352Delta
Find Deal
lun., oct. 6 - mié., oct. 8
Delta Logo
5:00 pm - 11:09 pmSDF-PWM
6h 09m1 stop
Delta Logo
5:42 am - 1:53 pmPWM-SDF
8h 11m2 stops
$357Delta
Find Deal
lun., oct. 6 - mié., oct. 8
American Airlines Logo
6:23 pm - 11:51 pmSDF-PWM
5h 28m1 stop
American Airlines Logo
5:21 pm - 10:02 pmPWM-SDF
4h 41m1 stop
$379American Airlines
Find Deal
mié., oct. 8 - mié., oct. 15
United Airlines Logo
7:00 am - 2:33 pmSDF-PWM
7h 33m1 stop
United Airlines Logo
6:00 am - 2:51 pmPWM-SDF
8h 51m2 stops
$401United Airlines
Find Deal
mar., oct. 7 - jue., oct. 9
United Airlines Logo
7:00 am - 4:44 pmSDF-PWM
9h 44m2 stops
United Airlines Logo
6:00 am - 2:51 pmPWM-SDF
8h 51m2 stops
$406United Airlines
Find Deal
mar., oct. 7 - jue., oct. 9
Southwest Logo
5:30 pm - 12:05 amSDF-PWM
6h 35m1 stop
Southwest Logo
5:15 pm - 12:10 amPWM-SDF
6h 55m1 stop
$537Southwest
Find Deal
jue., oct. 2 - lun., oct. 6

Delta flights from Louisville to Portland, Maine

Our best Delta deals on Louisville to Portland, Maine flight tickets
Delta
Oct 7
SDF5:00 pmLouisville Intl
6h 09m
1 stop
PWM11:09 pmPortland
Oct 8
PWM5:42 amPortland
7h 07m
1 stop
SDF12:49 pmLouisville Intl
$297
Find similar
Delta
Oct 7
SDF5:00 pmLouisville Intl
6h 09m
1 stop
PWM11:09 pmPortland
Oct 8
PWM5:42 amPortland
8h 11m
2 stops
SDF1:53 pmLouisville Intl
$302
Find similar
Delta
Nov 12
SDF12:57 pmLouisville Intl
10h 57m
2 stops
PWM11:54 pmPortland
Nov 19
PWM6:00 amPortland
8h 04m
2 stops
SDF2:04 pmLouisville Intl
$307
Find similar

United Airlines flights from Louisville to Portland, Maine

Our best United Airlines deals on Louisville to Portland, Maine flight tickets
United Airlines
Oct 7
SDF7:00 amLouisville Intl
7h 33m
1 stop
PWM2:33 pmPortland
Oct 9
PWM6:00 amPortland
8h 51m
2 stops
SDF2:51 pmLouisville Intl
$401
Find similar
United Airlines
Oct 7
SDF7:00 amLouisville Intl
9h 44m
2 stops
PWM4:44 pmPortland
Oct 9
PWM6:00 amPortland
8h 51m
2 stops
SDF2:51 pmLouisville Intl
$406
Find similar
United Airlines
Oct 5
SDF8:45 amLouisville Intl
5h 48m
1 stop
PWM2:33 pmPortland
Oct 8
PWM2:34 pmPortland
6h 14m
1 stop
SDF8:48 pmLouisville Intl
$422
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Portland, Maine 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, momondo users made 832,500 searches. Data last updated septiembre 15, 2025.
Use the filters below to find and compare flights from Louisville to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mar. 10/7

5:00 pm-11:09 pm

1 stop6h 09m

Portland

mié. 10/8

5:42 am-12:49 pm

1 stop7h 07m

$297

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mar. 10/7

5:00 pm-11:09 pm

1 stop6h 09m

Portland

mié. 10/8

5:42 am-1:53 pm

2 stops8h 11m

$302

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mié. 11/12

12:57 pm-11:54 pm

2 stops10h 57m

Portland

mié. 11/19

6:00 am-2:04 pm

2 stops8h 04m

$307

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

jue. 2/26

5:39 am-11:39 am

1 stop6h 00m

Portland

dom. 3/1

5:47 am-10:41 am

1 stop4h 54m

$350

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

lun. 10/6

5:00 pm-11:09 pm

1 stop6h 09m

Portland

mié. 10/8

5:42 am-12:49 pm

1 stop7h 07m

$352

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

lun. 10/6

5:00 pm-11:09 pm

1 stop6h 09m

Portland

mié. 10/8

5:42 am-1:53 pm

2 stops8h 11m

$357

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mié. 10/8

6:23 pm-11:51 pm

1 stop5h 28m

Portland

mié. 10/15

5:21 pm-10:02 pm

1 stop4h 41m

$379

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mar. 10/7

7:00 am-2:33 pm

1 stop7h 33m

Portland

jue. 10/9

6:00 am-2:51 pm

2 stops8h 51m

$401

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

mar. 10/7

7:00 am-4:44 pm

2 stops9h 44m

Portland

jue. 10/9

6:00 am-2:51 pm

2 stops8h 51m

$406

LouisvillePortland

SDF - PWM

SDFPWM

Louisville Intl

jue. 10/2

5:30 pm-12:05 am

1 stop6h 35m

Portland

lun. 10/6

5:15 pm-12:10 am

1 stop6h 55m

$537

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portland from

How to get the cheapest flight ticket from Louisville to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from Louisville is on a Monday. momondo users have found tickets for Monday departures for as low as $377. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Louisville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $455.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the evening is the cheapest time of day to fly from Louisville to Portland, Maine when you can find flight prices for as low as $332. Flying to Portland, Maine in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $441. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Portland, Maine?

You are more likely to see cheaper flights to Portland, Maine from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from Louisville for as low as $229 on momondo.

How have Louisville to Portland, Maine flight prices changed over time?

When to book flights from Louisville to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to Portland, Maine (SDF to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Portland, Maine

Direct flights

None
There are no direct flights from Louisville to Portland, Maine. There are no popular flight routes from Louisville to Portland, Maine.
Search flight deals

  • How far is Louisville Intl to Portland by plane?

    A flight from Louisville Intl to Portland will travel around 888.5 mi. In terms of flight time, this usually takes a little over 4h 10m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Portland Airport?

    Prices for flights from Louisville Intl Airport to Portland Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisville Intl Airport to Portland Airport?

  • How old do you have to be to fly from Louisville Intl Airport to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Louisville Intl Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Louisville to Portland, Maine?

Best airlines flying from Louisville to Portland, Maine

Compare and see reviews for airlines that fly from Louisville to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
7,954 reviews
Search Delta flights
United AirlinesPriceFrom $283Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Bartlett
Brunswick
Gorham
Auburn
Intervale
Windham
Bath
Oxford
Georgetown
Tamworth
Falmouth

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Portland?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Louisville to Portland. momondo saves you time and could save you money on your trip.

Can I find flights from Louisville to Portland with flexible booking policies on momondo?

Flights from Louisville to Portland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Louisville to Portland?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Portland from Louisville.

I’m not ready to book a flight from Louisville to Portland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from Louisville and alert you when they change.

An easier way to manage your Portland, Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
mié. 10/15
mié. 10/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States