What airlines fly to Portland, Maine?

American Airlines, Delta and Southwest are the top three most popular airlines that fly to Portland, Maine from Louisville according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 7 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Louisville Intl to Portland?

United Airlines and Southwest are the most popular carriers operating from Louisville Intl to Portland

Which layover airport has the shortest connection time from Louisville to Portland, Maine?

Atlanta (ATL) has the shortest average layover time for this route: 0h 53m.

Which layover airport offers the lowest fares from Louisville to Portland, Maine?

Flights via Baltimore (BWI) offer the lowest average round-trip price of $390.

Which layover airport has the shortest travel time from Louisville to Portland, Maine?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 4h 35m.

Which airport is the most popular layover for flights between Louisville and Portland, Maine?

Baltimore (BWI) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

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?

There are 4 operators available for flights from Louisville Intl Airport to Portland Airport as of September 2026.

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.

$163 Cheap Flights from Louisville to Portland, Maine in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Portland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:55 am - 4:24 pmSDF Louisville Intl-PWM Portland

5h 29m1 stop Raleigh-Durham

3:10 pm - 9:45 amPWM Portland-SDF Louisville Intl

18h 35m1 stop Pittsburgh

$270Breeze Airways

Wed, Oct 21 - Thu, Oct 29

10:55 am - 4:24 pmSDF Louisville Intl-PWM Portland

5h 29m1 stop Raleigh-Durham

3:10 pm - 9:45 amPWM Portland-SDF Louisville Intl

18h 35m1 stop Pittsburgh

$281Breeze Airways

Sat, Oct 24 - Thu, Oct 29

6:30 pm - 11:28 pmSDF Louisville Intl-PWM Portland

4h 58m1 stop Newark

6:55 pm - 11:41 pmPWM Portland-SDF Louisville Intl

4h 46m1 stop Newark

$325United Airlines

Tue, Oct 13 - Wed, Oct 21

6:00 am - 10:40 amSDF Louisville Intl-PWM Portland

4h 40m1 stop New York LaGuardia

6:28 am - 11:10 amPWM Portland-SDF Louisville Intl

4h 42m1 stop New York LaGuardia

$325Delta

Tue, Oct 20 - Wed, Oct 28

10:39 am - 4:02 pmSDF Louisville Intl-PWM Portland

5h 23m1 stop Detroit Metropolitan Wayne County

6:28 am - 11:10 amPWM Portland-SDF Louisville Intl

4h 42m1 stop New York LaGuardia

$325Delta

Thu, Oct 22 - Tue, Oct 27

10:00 am - 2:38 pmSDF Louisville Intl-PWM Portland

4h 38m1 stop Washington, D.C. Dulles Intl

8:49 am - 5:02 pmPWM Portland-SDF Louisville Intl

8h 13m2 stops Newark Chicago O'Hare Intl

$330United Airlines

Sat, Oct 24 - Thu, Oct 29

4:52 pm - 10:31 pmSDF Louisville Intl-PWM Portland

5h 39m1 stop Philadelphia

5:30 am - 12:08 pmPWM Portland-SDF Louisville Intl

6h 38m1 stop Philadelphia

$350American Airlines

Mon, Oct 19 - Fri, Oct 23

6:16 pm - 10:44 pmSDF Louisville Intl-PWM Portland

4h 28m1 stop Washington, D.C. Reagan-National

5:30 am - 12:08 pmPWM Portland-SDF Louisville Intl

6h 38m1 stop Philadelphia

$350American Airlines

Sat, Oct 10 - Sat, Oct 17

5:40 am - 12:10 pmSDF Louisville Intl-PWM Portland

6h 30m1 stop Baltimore/Washington

1:25 pm - 12:30 amPWM Portland-SDF Louisville Intl

11h 05m1 stop Baltimore/Washington

$363Southwest

Thu, Nov 19 - Tue, Nov 24

5:40 am - 10:30 amSDF Louisville Intl-PWM Portland

4h 50m1 stop Baltimore/Washington

5:10 pm - 12:25 amPWM Portland-SDF Louisville Intl

7h 15m1 stop Baltimore/Washington

$371Southwest

Thu, Nov 12 - Sun, Nov 15

Cheap last minute flights

Enter your travel dates to find the best prices.

9:42 pm - 4:24 pmSDF Louisville Intl-PWM Portland

18h 42m2 stops Fort Myers SW Florida Intl Raleigh-Durham

3:05 pm - 9:45 amPWM Portland-SDF Louisville Intl

18h 40m1 stop Pittsburgh

$525Breeze Airways

Mon, Sep 28 - Thu, Oct 1

9:42 pm - 4:24 pmSDF Louisville Intl-PWM Portland

18h 42m2 stops Fort Myers SW Florida Intl Raleigh-Durham

5:09 pm - 8:31 pmPWM Portland-SDF Louisville Intl

27h 22m1 stop Raleigh-Durham

$541Breeze Airways

Mon, Sep 28 - Tue, Oct 6

2:53 pm - 10:13 pmSDF Louisville Intl-PWM Portland

7h 20m1 stop Charlotte Douglas

7:00 am - 2:05 pmPWM Portland-SDF Louisville Intl

7h 05m1 stop Charlotte Douglas

$609American Airlines

Sat, Sep 26 - Sat, Oct 3

3:50 pm - 9:05 pmSDF Louisville Intl-PWM Portland

5h 15m1 stop Baltimore/Washington

5:35 am - 3:15 pmPWM Portland-SDF Louisville Intl

9h 40m2 stops Baltimore/Washington Orlando

$614Southwest

Sat, Sep 26 - Sat, Oct 3

11:13 am - 7:24 pmSDF Louisville Intl-PWM Portland

8h 11m2 stops Newark Washington, D.C. Dulles Intl

3:41 pm - 11:59 pmPWM Portland-SDF Louisville Intl

8h 18m2 stops Newark Chicago O'Hare Intl

$619United Airlines

Sat, Sep 26 - Sat, Oct 3

5:59 pm - 11:17 pmSDF Louisville Intl-PWM Portland

5h 18m1 stop New York LaGuardia

6:28 am - 11:10 amPWM Portland-SDF Louisville Intl

4h 42m1 stop New York LaGuardia

$640Delta

Sun, Sep 27 - Tue, Oct 6

6:30 pm - 11:28 pmSDF Louisville Intl-PWM Portland

4h 58m1 stop Newark

10:43 am - 5:40 pmPWM Portland-SDF Louisville Intl

6h 57m1 stop Newark

$650United Airlines

Thu, Sep 24 - Wed, Sep 30

5:59 pm - 11:17 pmSDF Louisville Intl-PWM Portland

5h 18m1 stop New York LaGuardia

6:30 am - 11:05 amPWM Portland-SDF Louisville Intl

4h 35m1 stop New York LaGuardia

$666Delta

Sun, Sep 27 - Wed, Sep 30

5:59 pm - 11:47 pmSDF Louisville Intl-PWM Portland

5h 48m1 stop Chicago O'Hare Intl

6:00 pm - 10:55 pmPWM Portland-SDF Louisville Intl

4h 55m1 stop Philadelphia

$701American Airlines

Sun, Sep 27 - Sat, Oct 3

4:10 pm - 11:00 pmSDF Louisville Intl-PWM Portland

6h 50m2 stops Nashville Intl Baltimore/Washington

5:35 am - 2:55 pmPWM Portland-SDF Louisville Intl

9h 20m2 stops Baltimore/Washington Nashville Intl

$725Southwest

Sun, Sep 27 - Sat, Oct 3

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Breeze Airways flights from Louisville to Portland, Maine

Our best Breeze Airways deals on Louisville to Portland, Maine flight tickets

Breeze Airways

Oct 21

SDF10:55 amLouisville Intl

5h 29m

1 stop

PWM4:24 pmPortland

Oct 29

PWM3:10 pmPortland

18h 35m

1 stop

SDF9:45 amLouisville Intl

$270

Breeze Airways

Oct 24

SDF10:55 amLouisville Intl

5h 29m

1 stop

PWM4:24 pmPortland

Oct 29

PWM3:10 pmPortland

18h 35m

1 stop

SDF9:45 amLouisville Intl

$281

Breeze Airways

Oct 26

SDF9:22 pmLouisville Intl

13h 29m

1 stop

PWM10:51 amPortland

Oct 29

PWM3:10 pmPortland

18h 35m

1 stop

SDF9:45 amLouisville Intl

$287

Delta flights from Louisville to Portland, Maine

Our best Delta deals on Louisville to Portland, Maine flight tickets

Delta

Oct 20

SDF6:00 amLouisville Intl

4h 40m

1 stop

PWM10:40 amPortland

Oct 29

PWM6:28 amPortland

7h 31m

1 stop

SDF1:59 pmLouisville Intl

$325

Delta

Nov 1

SDF7:55 amLouisville Intl

4h 02m

1 stop

PWM11:57 amPortland

Nov 7

PWM4:47 pmPortland

4h 26m

1 stop

SDF9:13 pmLouisville Intl

$354

Delta

Nov 18

SDF10:49 amLouisville Intl

5h 21m

1 stop

PWM4:10 pmPortland

Nov 22

PWM6:27 amPortland

7h 36m

1 stop

SDF2:03 pmLouisville Intl

$371

momondo Fare Finder

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

Cheapest round-trip

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Wed 10/21

10:55 am-4:24 pm

1 stop5h 29m

Portland

Thu 10/29

3:10 pm-9:45 am

1 stop18h 35m

$270

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Sat 10/24

10:55 am-4:24 pm

1 stop5h 29m

Portland

Thu 10/29

3:10 pm-9:45 am

1 stop18h 35m

$281

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Tue 10/13

6:30 pm-11:28 pm

1 stop4h 58m

Portland

Wed 10/21

6:55 pm-11:41 pm

1 stop4h 46m

$325

Quickest round-trip

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Tue 10/20

6:00 am-10:40 am

1 stop4h 40m

Portland

Wed 10/28

6:28 am-11:10 am

1 stop4h 42m

$325

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Thu 10/22

10:39 am-4:02 pm

1 stop5h 23m

Portland

Tue 10/27

6:28 am-11:10 am

1 stop4h 42m

$325

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Sat 10/24

10:00 am-2:38 pm

1 stop4h 38m

Portland

Thu 10/29

8:49 am-5:02 pm

2 stops8h 13m

$330

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Mon 10/19

4:52 pm-10:31 pm

1 stop5h 39m

Portland

Fri 10/23

5:30 am-12:08 pm

1 stop6h 38m

$350

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Sat 10/10

6:16 pm-10:44 pm

1 stop4h 28m

Portland

Sat 10/17

5:30 am-12:08 pm

1 stop6h 38m

$350

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Thu 11/19

5:40 am-12:10 pm

1 stop6h 30m

Portland

Tue 11/24

1:25 pm-12:30 am

1 stop11h 05m

$363

LouisvillePortland

SDF Louisville Intl - PWM Portland

SDFPWM

Louisville Intl

Thu 11/12

5:40 am-10:30 am

1 stop4h 50m

Portland

Sun 11/15

5:10 pm-12:25 am

1 stop7h 15m

$371

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Louisville and Portland, Maine?

Prices are currently low for flights on this route.

Typical prices usually range from $393 to $540.
The lowest price recently found on this route was $270.

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from Louisville is in February. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $283.

Can stopping save me money on Louisville to Portland, Maine flights?

You could potentially save up to 6% on your flight if you consider stops on a Louisville to Portland, Maine flight.

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

Best Price Found	$163
Fastest flight time	3h 45m
Direct flights	None

The best one-way flight to Portland, Maine from Louisville in the past 72 hours is $163. The best round-trip flight deal from Louisville to Portland, Maine found on momondo in the last 72 hours is $270.

The fastest flight from Louisville to Portland, Maine takes 3h 45m

There are no direct flights from Louisville to Portland, Maine. There are no popular flight routes from Louisville to Portland, Maine.

Search flight deals

Frequently asked questions about flying from Louisville to Portland, Maine

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 3h 45m.
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?
There are 4 operators available for flights from Louisville Intl Airport to Portland Airport as of September 2026.
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?
momondo data reveals that the most frequently booked airline on the route from Louisville to Portland, Maine is United Airlines, representing 32% of all bookings. The subsequent popular airlines are American Airlines at 28%, Delta at 28%, and Southwest at 11%.

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
Delta	PriceFrom $267	Free Cancellation	Rating 7.8 8,595 reviews	Search Delta flights
American Airlines	PriceFrom $272	Free Cancellation	Rating 7.0 12,082 reviews	Search American Airlines flights
United Airlines	PriceFrom $324	Free Cancellation	Rating 7.4 10,225 reviews	Search United Airlines flights
Southwest	PriceFrom $371	Free Cancellation	Rating 8.0 4,195 reviews	Search Southwest flights

North Conway

Jackson

Boothbay Harbor

Brunswick

Lewiston

Freeport

Auburn

Conway

Bartlett

Gorham

Bath

Windham

Intervale

Oxford

Georgetown

Falmouth

Tamworth

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.

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Airports servicing Maine

Rockland Knox County Regional Airport

Cheap flights from Louisville to Portland from $163

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 11/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

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Breeze Airways flights from Louisville to Portland, Maine

Our best Breeze Airways deals on Louisville to Portland, Maine flight tickets

Delta flights from Louisville to Portland, Maine

Our best Delta deals on Louisville to Portland, Maine flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Louisville to Portland, Maine that are best for you.

See travel insights to Portland from

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

What is the typical price of a round-trip flight between Louisville and Portland, Maine?

What is the cheapest month to fly to Portland, Maine?

Can stopping save me money on Louisville to Portland, Maine flights?

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

What is the cheapest airline that flies from Louisville Intl to Portland?

What airlines fly to Portland, Maine?

Which airport is the most popular layover for flights between Louisville and Portland, Maine?

Which layover airport offers the lowest fares from Louisville to Portland, Maine?

Which layover airport has the shortest travel time from Louisville to Portland, Maine?

Which layover airport has the shortest connection time from Louisville to Portland, Maine?

When to book flights from Louisville to Portland, Maine

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Portland?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Maine

Fly your favorite airline to Portland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portland

List of cabin classes available on flights landing in Portland. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Louisville

According to popular flight searches on momondo this year

Complete your trip to Portland

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