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Cheap flights from Ottawa to Louisville from C$ 726

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SDF
4 Aug — 11 Aug1
1 adult

Cheap 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 30 July 2025.

Round-trip from

C$ 726

Popular in

October

Cheapest in

November

Average price

C$ 832
United Airlines
  • United Airlines
  • 3/9-17/9
  • 2 total stops
  • 26h 31m total
  • Ottawa to Louisville
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Ottawa to Louisville

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 30 July 2025.

Wed 3/96:33 a.m.YOW - SDF
1 stop15h 51mUnited Airlines
Wed 17/910:55 a.m.SDF - YOW
1 stop10h 40mUnited Airlines
Deal found 29/7C$ 726
Wed 3/99:50 a.m.YOW - SDF
2 stops12h 34mMultiple Airlines
Wed 17/96:15 a.m.SDF - YOW
2 stops7h 36mMultiple Airlines
Deal found 29/7C$ 810
Thu 21/811:10 a.m.YOW - SDF
2 stops12h 05mAir Canada
Sun 24/86:15 a.m.SDF - YOW
1 stop10h 28mAir Canada
Deal found 29/7C$ 1,047
Thu 21/85:55 a.m.YOW - SDF
2 stops8h 21mDelta
Sun 24/810:24 a.m.SDF - YOW
2 stops13h 58mDelta
Deal found 29/7C$ 1,121
Mon 28/76:00 a.m.YOW - SDF
2 stops13h 01mWestJet
Tue 29/77:41 p.m.SDF - YOW
2 stops29h 07mWestJet
Deal found 27/7C$ 1,401

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 30 July 2025.
Use the filters below to find and compare flights from Ottawa to Louisville that are best for you.

Fly from

Ottawa

Fly to

Louisville

Route

Depart

Return

Price

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 3/9

6:33 a.m.-10:24 p.m.

1 stop15h 51m

Louisville Intl

Wed 17/9

10:55 a.m.-9:35 p.m.

1 stop10h 40m

C$ 726

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 3/9

9:50 a.m.-10:24 p.m.

2 stops12h 34m

Louisville Intl

Wed 17/9

6:15 a.m.-1:51 p.m.

2 stops7h 36m

C$ 810

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Thu 21/8

11:10 a.m.-11:15 p.m.

2 stops12h 05m

Louisville Intl

Sun 24/8

6:15 a.m.-4:43 p.m.

1 stop10h 28m

C$ 1,047

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Thu 21/8

5:55 a.m.-2:16 p.m.

2 stops8h 21m

Louisville Intl

Sun 24/8

10:24 a.m.-12:22 a.m.

2 stops13h 58m

C$ 1,121

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

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, February is the cheapest month in which you can book a flight from Ottawa to Louisville (average of C$ 332). Flying from Ottawa to Louisville in September is currently the most expensive (average of C$ 487). 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.

What is the cheapest time of day to fly from YOW to SDF?

Find hourly flight availability from Ottawa to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 July 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 8% on flights from Ottawa to Louisville by exploring options for tickets in the evening.

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 30 July 2025.
See what other customers who have flown with Delta,United Airlines, andAir Canada 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.
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Canada
7.1
Good
9,837 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • What are the cheapest airlines flying from Ottawa to Louisville round-trip?

    Flying on United Airlines is currently your cheapest option to Louisville, with prices starting at C$ 726. Additional round-trip tickets that might be worth considering are offered by Air Canada and Delta, with the lowest prices starting at C$ 1,047 and C$ 1,119, respectively. These flights start at 14% 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, February is the cheapest month in which you can book a flight from Ottawa to Louisville (average of C$ 332). Flying from Ottawa to Louisville in September is currently the most expensive (average of C$ 487). 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

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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 30 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 713AverageC$ 817FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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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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