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Cheap flights from Ottawa to Louisville from C$ 252

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SDF
29 May — 5 Jun1
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 29 April 2026.

Wed 27/55:25 p.m.
YOW
-
SDF
1 stop6h 24m
United Airlines
Wed 3/610:00 a.m.
SDF
-
YOW
1 stop13h 54m
United Airlines
Deal found 29/4C$ 421
Thu 20/87:30 p.m.
YOW
-
SDF
1 stop14h 44m
United Airlines
Mon 24/86:00 a.m.
SDF
-
YOW
1 stop3h 56m
United Airlines
Deal found 26/4C$ 445
Fri 3/76:00 a.m.
YOW
-
SDF
1 stop4h 23m
United Airlines
Fri 3/71:48 p.m.
SDF
-
YOW
1 stop10h 06m
United Airlines
Deal found 29/4C$ 447
Sun 9/86:00 a.m.
YOW
-
SDF
1 stop4h 23m
United Airlines
Fri 14/86:00 a.m.
SDF
-
YOW
1 stop3h 56m
United Airlines
Deal found 29/4C$ 454
Mon 11/56:00 a.m.
YOW
-
SDF
1 stop13h 42m
United Airlines
Wed 13/55:50 a.m.
SDF
-
YOW
1 stop4h 13m
United Airlines
Deal found 28/4C$ 504
Thu 20/85:20 p.m.
YOW
-
SDF
2 stops6h 45m
Air Canada
Mon 24/86:00 a.m.
SDF
-
YOW
1 stop3h 56m
Air Canada
Deal found 26/4C$ 519
Fri 3/76:00 a.m.
YOW
-
SDF
1 stop4h 23m
United Airlines
Fri 10/76:00 a.m.
SDF
-
YOW
1 stop4h 03m
United Airlines
Deal found 29/4C$ 523

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 29 April 2026.

Round-trip from

C$ 421

One-way from

C$ 252

Popular in

January

Cheapest in

March

Average price

C$ 471
United Airlines
  • United Airlines
  • 27/5-3/6
  • 2 total stops
  • 20h 18m total
  • Ottawa to Louisville
Search Deals
United Airlines
  • United Airlines
  • 12/6
  • 1 total stop
  • 14h 53m total
  • Ottawa to Louisville
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 185 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 29 April 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

Thu 20/8

7:30 p.m.-10:14 a.m.

1 stop14h 44m

Louisville Intl

Mon 24/8

6:00 a.m.-9:56 a.m.

1 stop3h 56m

C$ 445

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Fri 3/7

6:00 a.m.-10:23 a.m.

1 stop4h 23m

Louisville Intl

Fri 3/7

1:48 p.m.-11:54 p.m.

1 stop10h 06m

C$ 447
Quickest round-trip

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Sun 9/8

6:00 a.m.-10:23 a.m.

1 stop4h 23m

Louisville Intl

Fri 14/8

6:00 a.m.-9:56 a.m.

1 stop3h 56m

C$ 454

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 11/5

3:10 p.m.-10:22 p.m.

1 stop7h 12m

Louisville Intl

Wed 13/5

5:50 a.m.-10:03 a.m.

1 stop4h 13m

C$ 513

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Fri 3/7

6:00 a.m.-10:23 a.m.

1 stop4h 23m

Louisville Intl

Fri 10/7

6:00 a.m.-10:03 a.m.

1 stop4h 03m

C$ 523

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Thu 20/8

6:00 a.m.-7:19 p.m.

2 stops13h 19m

Louisville Intl

Mon 24/8

6:00 a.m.-9:56 a.m.

1 stop3h 56m

C$ 581
Cheapest one-way

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Fri 12/6

7:30 p.m.-10:23 a.m.

1 stop14h 53m

C$ 252
Quickest one-way

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 6/5

6:00 a.m.-7:42 p.m.

1 stop13h 42m

C$ 335

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

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’s the top layover airport for flights from Ottawa to Louisville?

Share of one-stop round-trip flights from Ottawa to Louisville chosen by Cheapflights users in the past 12 months, using the same layover each way.

Washington, D.C. (IAD) – chosen by Cheapflights users on 80% of one-stop itineraries from Ottawa to Louisville on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to Louisville?

Average round-trip fare for 1-stop flights from Ottawa to Louisville, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Washington, D.C. (IAD) is the most affordable 1-stop option, with an average round-trip price of C$ 1,003.

What’s the fastest layover option from Ottawa to Louisville?

Shortest average travel time for 1-stop one-way flights from Ottawa to Louisville, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Washington, D.C. (IAD) have the shortest average one-way travel time for 1-stop routes: 4h 58m.

Which airport typically offers the quickest layover for flights from Ottawa to Louisville?

Average layover duration for 1-stop one-way flights from Ottawa to Louisville, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Washington, D.C. (IAD) offer the fastest connection on this route, with an average layover time of 1h 05m.

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 29 April 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
9,680 reviews
Check prices

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,680 reviews
United Airlines
7.4
Good
9,680 reviews
Check prices

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 14h 44m. United Airlines provides one of the quickest options available for as low as C$ 445. 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$ 421. This flight start at 39% 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.

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 29 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 421AverageC$ 789FlexibilityNo 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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