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

United Airlines, Southwest, and Delta are the most popular carriers operating from Louisville Intl to Washington

What airlines fly to State of Washington?

Delta, Alaska Airlines and American Airlines are the top three most popular airlines that fly to State of Washington from Louisville according to our data. Delta is the first choice among our users, with 37% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 7 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Louisville Intl Airport to Washington refresh daily.

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

There are 5 operators available for flights from Louisville Intl Airport to Washington as of July 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Washington.

What documentation or ID do you need to fly to Washington?

The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$167 Cheap Flights from Louisville to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 pm - 11:59 pm

SDF

PDX

8h 29m

1 stop

6:00 am - 6:50 pm

PDX

SDF

9h 50m

1 stop

$333American Airlines

Tue, Sep 8 - Wed, Sep 9

7:10 pm - 11:05 pm

SDF

PDX

6h 55m

1 stop

11:30 pm - 12:10 pm

PDX

SDF

9h 40m

2 stops

$338Southwest

Thu, Sep 17 - Mon, Sep 21

3:20 pm - 11:15 pm

SDF

PDX

10h 55m

2 stops

11:30 pm - 12:10 pm

PDX

SDF

9h 40m

2 stops

$343Southwest

Thu, Sep 17 - Mon, Sep 21

6:30 pm - 11:59 pm

SDF

PDX

8h 29m

1 stop

6:00 am - 6:50 pm

PDX

SDF

9h 50m

1 stop

$346American Airlines

Tue, Sep 8 - Wed, Sep 9

8:45 am - 12:55 pm

SDF

SEA

7h 10m

1 stop

5:30 am - 3:15 pm

SEA

SDF

6h 45m

1 stop

$350Southwest

Wed, Nov 4 - Sat, Nov 7

3:36 pm - 10:57 pm

SDF

PDX

10h 21m

2 stops

5:00 am - 2:34 pm

PDX

SDF

6h 34m

1 stop

$351United Airlines

Wed, Oct 14 - Sat, Oct 17

2:55 pm - 8:55 pm

SDF

GEG

9h 00m

1 stop

7:05 am - 3:55 pm

GEG

SDF

5h 50m

1 stop

$355Southwest

Sat, Aug 29 - Sat, Sep 5

6:28 am - 1:00 pm

SDF

SEA

9h 32m

1 stop

7:51 am - 6:50 pm

SEA

SDF

7h 59m

1 stop

$355American Airlines

Sun, Sep 6 - Wed, Sep 9

6:50 am - 1:38 pm

SDF

PDX

9h 48m

1 stop

10:55 pm - 10:32 am

PDX

SDF

8h 37m

1 stop

$359Delta

Tue, Aug 25 - Mon, Aug 31

9:00 am - 6:51 pm

SDF

GEG

12h 51m

2 stops

1:37 pm - 10:31 pm

GEG

SDF

5h 54m

1 stop

$360United Airlines

Sat, Aug 29 - Sat, Sep 5

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American Airlines flights from Louisville to State of Washington

Our best American Airlines deals on Louisville to State of Washington flight tickets

American Airlines

Sep 8

SDF6:30 pmLouisville Intl

8h 29m

1 stop

PDX11:59 pmPortland

Sep 9

PDX6:00 amPortland

9h 50m

1 stop

SDF6:50 pmLouisville Intl

$333

American Airlines

Sep 8

SDF6:30 pmLouisville Intl

8h 29m

1 stop

PDX11:59 pmPortland

Sep 9

PDX6:00 amPortland

9h 50m

1 stop

SDF6:50 pmLouisville Intl

$346

American Airlines

Sep 6

SDF6:28 amLouisville Intl

9h 32m

1 stop

SEA1:00 pmSeattle/Tacoma Intl

Sep 9

SEA7:51 amSeattle/Tacoma Intl

7h 59m

1 stop

SDF6:50 pmLouisville Intl

$355

Delta flights from Louisville to State of Washington

Our best Delta deals on Louisville to State of Washington flight tickets

Delta

Aug 25

SDF6:50 amLouisville Intl

9h 48m

1 stop

PDX1:38 pmPortland

Aug 31

PDX10:55 pmPortland

8h 37m

1 stop

SDF10:32 amLouisville Intl

$359

Delta

Sep 4

SDF7:54 pmLouisville Intl

7h 00m

1 stop

SEA11:54 pmSeattle/Tacoma Intl

Sep 11

SEA11:59 pmSeattle/Tacoma Intl

7h 20m

1 stop

SDF10:19 amLouisville Intl

$406

Delta

Aug 27

SDF4:30 pmLouisville Intl

6h 47m

1 stop

PDX8:17 pmPortland

Aug 31

PDX10:55 pmPortland

8h 37m

1 stop

SDF10:32 amLouisville Intl

$408

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 9/8

6:30 pm-11:59 pm

1 stop8h 29m

Portland

Wed 9/9

6:00 am-6:50 pm

1 stop9h 50m

$333

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Thu 9/17

7:10 pm-11:05 pm

1 stop6h 55m

Portland

Mon 9/21

11:30 pm-12:10 pm

2 stops9h 40m

$338

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Thu 9/17

3:20 pm-11:15 pm

2 stops10h 55m

Portland

Mon 9/21

11:30 pm-12:10 pm

2 stops9h 40m

$343

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 9/8

6:30 pm-11:59 pm

1 stop8h 29m

Portland

Wed 9/9

6:00 am-6:50 pm

1 stop9h 50m

$346

Quickest round-trip

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 11/4

8:45 am-12:55 pm

1 stop7h 10m

Seattle/Tacoma Intl

Sat 11/7

5:30 am-3:15 pm

1 stop6h 45m

$350

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Wed 10/14

3:36 pm-10:57 pm

2 stops10h 21m

Portland

Sat 10/17

5:00 am-2:34 pm

1 stop6h 34m

$351

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Sat 8/29

2:55 pm-8:55 pm

1 stop9h 00m

Spokane

Sat 9/5

7:05 am-3:55 pm

1 stop5h 50m

$355

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sun 9/6

6:28 am-1:00 pm

1 stop9h 32m

Seattle/Tacoma Intl

Wed 9/9

7:51 am-6:50 pm

1 stop7h 59m

$355

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Tue 8/25

6:50 am-1:38 pm

1 stop9h 48m

Portland

Mon 8/31

10:55 pm-10:32 am

1 stop8h 37m

$359

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Sat 8/29

9:00 am-6:51 pm

2 stops12h 51m

Spokane

Sat 9/5

1:37 pm-10:31 pm

1 stop5h 54m

$360

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 State of Washington

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

What is the cheapest month to fly to State of Washington?

The month of January is, on average, the cheapest month to fly to State of Washington from Louisville, with most prices found around $299. If you aren’t able to travel to State of Washington during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $357.

How far in advance should I book a flight from Louisville to Washington?

You are more likely to see cheaper flights to State of Washington from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $449 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Louisville for as low as $372 on momondo.

Can stopping save me money on Louisville to State of Washington flights?

You could potentially save up to 38% on your flight if you consider stops on a Louisville to State of Washington flight.

Cheap Louisville to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to State of Washington

Fastest flight time	6h 55m
Direct flights	None

The fastest flight from Louisville to State of Washington takes 6h 55m

There are no direct flights from Louisville to State of Washington. There are no popular flight routes from Louisville to State of Washington.

Search flight deals

Frequently asked questions about flying from Louisville to Washington

When did momondo last update prices for flights from Louisville Intl Airport to Washington?
Prices for flights from Louisville Intl Airport to Washington refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to Washington?
There are 5 operators available for flights from Louisville Intl Airport to Washington as of July 2026.
How old do you have to be to fly from Louisville Intl Airport to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Louisville to State of Washington

Compare and see reviews for airlines that fly from Louisville to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $187	Free Cancellation	Rating 7.8 8,487 reviews	Search Delta flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.1 11,838 reviews	Search American Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 10,025 reviews	Search United Airlines flights
Southwest	PriceFrom $278	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $430	Free Cancellation	Rating 7.9 12,697 reviews	Search Alaska Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Washington for you.

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

All flight searches from Louisville to Washington on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Louisville to Washington.

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

Yes. momondo can track prices for Louisville to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.