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Cheap flights from Ottawa to Louisville from C$ 443

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SDF
11 Apr — 18 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Louisville

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Louisville
Explore the most affordable flight options available from Ottawa to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 March 2026.

Wed 22/45:25 p.m.
YOW
-
SDF
1 stop6h 34m
United Airlines
Wed 29/49:07 a.m.
SDF
-
YOW
1 stop4h 52m
United Airlines
Deal found 7/3C$ 443
Sat 4/410:44 a.m.
YOW
-
SDF
1 stop5h 57m
United Airlines
Wed 8/49:07 a.m.
SDF
-
YOW
1 stop4h 52m
United Airlines
Deal found 9/3C$ 448
Mon 20/42:40 p.m.
YOW
-
SDF
1 stop5h 02m
United Airlines
Thu 23/410:00 a.m.
SDF
-
YOW
1 stop11h 35m
United Airlines
Deal found 9/3C$ 459
Wed 8/43:10 p.m.
YOW
-
SDF
1 stop4h 49m
United Airlines
Wed 15/49:07 a.m.
SDF
-
YOW
1 stop4h 52m
United Airlines
Deal found 11/3C$ 468
Mon 20/45:25 p.m.
YOW
-
SDF
1 stop5h 05m
Air Canada
Thu 23/48:47 a.m.
SDF
-
YOW
1 stop7h 51m
Air Canada
Deal found 10/3C$ 531
Sat 4/46:00 a.m.
YOW
-
SDF
2 stops10h 41m
Air Canada
Wed 8/49:07 a.m.
SDF
-
YOW
2 stops7h 59m
Air Canada
Deal found 9/3C$ 544

Find flight deals from Ottawa to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) 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 12 March 2026.

Round-trip from

C$ 443

Popular in

January

Cheapest in

March

Average price

C$ 418
United Airlines
  • United Airlines
  • 22/4-29/4
  • 2 total stops
  • 11h 26m total
  • Ottawa to Louisville
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa 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 629,999 searches. Data last updated 12 March 2026.
Use the filters below to find and compare flights from Ottawa to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 22/4

6:00 a.m.-10:30 p.m.

3 stops16h 30m

Louisville Intl

Wed 29/4

5:00 a.m.-5:07 p.m.

1 stop12h 07m

C$ 447

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Sun 19/4

10:00 a.m.-7:42 p.m.

1 stop9h 42m

Louisville Intl

Thu 23/4

9:07 a.m.-9:35 p.m.

1 stop12h 28m

C$ 448

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Tue 7/4

5:25 p.m.-10:30 p.m.

1 stop5h 05m

Louisville Intl

Tue 14/4

9:07 a.m.-5:07 p.m.

1 stop8h 00m

C$ 448

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Sat 4/4

10:00 a.m.-7:42 p.m.

1 stop9h 42m

Louisville Intl

Wed 8/4

9:55 a.m.-6:55 p.m.

1 stop9h 00m

C$ 458

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 20/4

2:40 p.m.-7:42 p.m.

1 stop5h 02m

Louisville Intl

Thu 23/4

10:00 a.m.-9:35 p.m.

1 stop11h 35m

C$ 459

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 8/4

6:00 a.m.-4:41 p.m.

3 stops10h 41m

Louisville Intl

Wed 15/4

2:20 p.m.-10:05 p.m.

1 stop7h 45m

C$ 530
Quickest round-trip

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 20/4

5:25 p.m.-10:30 p.m.

1 stop5h 05m

Louisville Intl

Thu 23/4

8:47 a.m.-4:38 p.m.

1 stop7h 51m

C$ 531
Cheapest one-way
Quickest one-way

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 6/4

10:44 a.m.-10:30 p.m.

1 stop11h 46m

C$ 547

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 6/4

5:40 a.m.-9:16 p.m.

2 stops15h 36m

C$ 631

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Sorted by cheapest first

Best time to book a flight from Ottawa to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Ottawa 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 Ottawa to Louisville

What is the cheapest month to book a flight from Ottawa to Louisville?

Currently, April is the cheapest month in which you can book a flight from Ottawa to Louisville (average of C$ 357). Flying from Ottawa to Louisville in February is currently the most expensive (average of C$ 1,204). 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.

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 12 March 2026.
See what other customers who have flown with United Airlines from Ottawa to Louisville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,418 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,418 reviews
United Airlines
7.4
Good
9,418 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Louisville. 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 Ottawa to Louisville?

    A quick flight from Ottawa to Louisville can take about 16h 30m. United Airlines provides one of the quickest options available for as low as C$ 447. The distance from Ottawa to Louisville is about 1151 km.

  • What is the cheapest airline to fly from Ottawa to Louisville round-trip?

    Flying on United Airlines is currently your cheapest option to Louisville, with prices starting at C$ 418. This flight start at 41% lower than the current average price 3 months from now.

  • Can I find deals for flights from Ottawa to Louisville that include hotel bookings?

    Yes. In addition to deals on Ottawa to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Louisville.

  • Can I find deals for business class flights from Ottawa to Louisville?

    Yes. Cheapflights offers flight deals from Ottawa to Louisville 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 Ottawa to Louisville?

    Currently, April is the cheapest month in which you can book a flight from Ottawa to Louisville (average of C$ 357). Flying from Ottawa to Louisville in February is currently the most expensive (average of C$ 1,204). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Ottawa to Louisville

Discover the top airline that operate flights from Ottawa to Louisville. 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 629,999 searches. Data last updated 12 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 418AverageC$ 783FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to Louisville?

Cheapflights helps you search for flights from Ottawa to Louisville via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Louisville?

Cheapflights helps you find that perfect flight to Louisville from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ottawa to Louisville with no change fees?

Yes! Cheapflights helps users easily find flights from Ottawa to Louisville with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to Louisville become cheaper?

Not ready to book yet? You can track prices for flights from Ottawa to Louisville on Cheapflights with our Price Alert feature and get notified when better prices are available.

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