Find flights
When to book
Airlines
FAQs

Cheap flights from Ottawa to Milwaukee from C$ 364

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — MKE
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ottawa to Milwaukee

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Milwaukee (MKE). 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 11 September 2025.

Round-trip from

C$ 787

One-way from

C$ 364

Popular in

July

Cheapest in

June

Average price

C$ 831
United Airlines
  • United Airlines
  • 25/10-1/11
  • 3 total stops
  • 22h 26m total
  • Ottawa to Milwaukee
Search Deals
5/10
  • 5/10
  • 2 total stops
  • 27h 54m total
  • Ottawa to Milwaukee
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 299 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease (C$ 186 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Ottawa to Milwaukee

Cheapest flights from Ottawa to Milwaukee
Explore the most affordable flight options available from Ottawa to Milwaukee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Sat 25/105:15 a.m.YOW - MKE
2 stops16h 53mUnited Airlines
Sat 1/112:45 p.m.MKE - YOW
1 stop5h 33mUnited Airlines
Deal found 9/9C$ 787

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Milwaukee 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 11 September 2025.
Use the filters below to find and compare flights from Ottawa to Milwaukee that are best for you.

Fly from

Ottawa

Fly to

Milwaukee

Route

Depart

Return

Price

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 25/10

5:15 a.m.-9:08 p.m.

2 stops16h 53m

Milwaukee-Mitchell

Sat 1/11

3:49 p.m.-11:54 p.m.

2 stops7h 05m

C$ 787

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sun 5/10

4:25 p.m.-7:19 p.m.

2 stops27h 54m

C$ 364

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Wed 24/9

6:00 a.m.-8:55 p.m.

3 stops39h 55m

C$ 377

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 25/10

5:15 a.m.-9:08 p.m.

2 stops16h 53m

C$ 389

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 27/9

3:50 p.m.-11:58 a.m.

2 stops21h 08m

C$ 423

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sun 5/10

6:33 a.m.-6:56 p.m.

1 stop13h 23m

C$ 491

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 25/10

6:30 p.m.-7:18 p.m.

3 stops49h 48m

C$ 504

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Thu 25/9

6:00 a.m.-12:02 a.m.

3 stops19h 02m

C$ 552

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Fri 26/9

5:50 p.m.-11:24 p.m.

1 stop6h 34m

C$ 574

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 23/9

5:55 a.m.-4:00 p.m.

2 stops11h 05m

C$ 583

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Best time to book a flight from Ottawa to Milwaukee

Have a flexible travel schedule? Discover the best time to fly to Milwaukee 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 Milwaukee

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Milwaukee (average of C$ 339). Flying from Ottawa to Milwaukee in July is currently the most expensive (average of C$ 484). 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.

How much does it cost to fly round-trip from Ottawa to Milwaukee?

Reviews of airlines servicing Milwaukee

Get insights into the airlines that provide service to Milwaukee. 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 Milwaukee. Reviews last updated 11 September 2025.
See what other customers who have flown with United Airlines from Ottawa to Milwaukee 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
8,937 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

    Departing from Ottawa to Milwaukee will take you 16h 53m. Ottawa and Milwaukee are separated by a distance of 1009 km.

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

    United Airlines, at C$ 694, was found to be the cheapest airline from Ottawa to Milwaukee.. This flight start at 30% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ottawa to Milwaukee (average of C$ 339). Flying from Ottawa to Milwaukee in July is currently the most expensive (average of C$ 484). 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.

Alternative routes for Ottawa to Milwaukee

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to O'Hare Intl flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Pearson Intl to Minneapolis flights
Pierre Elliott Trudeau Intl to Minneapolis flights
Toronto Island to O'Hare Intl flights
Ottawa to O'Hare Intl flights
Pearson Intl to Milwaukee flights
Toronto Island to Minneapolis flights
Ottawa to Minneapolis flights
Pearson Intl to Madison flights
Hamilton to O'Hare Intl flights
London to O'Hare Intl flights
Pierre Elliott Trudeau Intl to Madison flights
Pearson Intl to Green Bay flights
Ottawa to Madison flights
Pierre Elliott Trudeau Intl to Milwaukee flights
Pearson Intl to Duluth flights
Region of Waterloo Intl to O'Hare Intl flights
Pearson Intl to Wausau flights
Kingston to O'Hare Intl flights
Sudbury to O'Hare Intl flights
Pierre Elliott Trudeau Intl to Duluth flights

Top airline flying from Ottawa to Milwaukee

Discover the top airline that operate flights from Ottawa to Milwaukee. 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 694AverageC$ 952FlexibilityNo 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 Milwaukee?

When you search for this flight from Ottawa to Milwaukee, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ottawa to Milwaukee.

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

Need flexible booking options for your flight to Milwaukee from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Ottawa to Milwaukee flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.