Find flights
When to book
Airlines
FAQs

Cheap flights from Ottawa to Houston from C$ 268

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 17/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
5 Apr — 12 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Houston

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Houston
Explore the most affordable flight options available from Ottawa to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 March 2026.

Thu 23/47:00 a.m.
YOW
-
IAH
1 stop9h 11m
Multiple Airlines
Thu 30/49:46 a.m.
IAH
-
YOW
1 stop13h 39m
Multiple Airlines
Deal found 4/3C$ 367
Wed 8/49:30 a.m.
YOW
-
IAH
1 stop14h 04m
Multiple Airlines
Sun 12/41:17 p.m.
IAH
-
YOW
1 stop9h 41m
Multiple Airlines
Deal found 4/3C$ 438
Tue 7/49:30 a.m.
YOW
-
IAH
1 stop25h 48m
Multiple Airlines
Thu 9/41:17 p.m.
IAH
-
YOW
1 stop9h 41m
Multiple Airlines
Deal found 4/3C$ 464
Sun 19/44:15 p.m.
YOW
-
IAH
1 stop30h 40m
Multiple Airlines
Sun 26/41:58 p.m.
IAH
-
YOW
1 stop9h 00m
Multiple Airlines
Deal found 5/3C$ 466
Thu 26/34:15 p.m.
YOW
-
IAH
1 stop8h 44m
Multiple Airlines
Wed 1/45:53 p.m.
IAH
-
YOW
2 stops29h 32m
Multiple Airlines
Deal found 4/3C$ 473
Wed 8/49:30 a.m.
YOW
-
IAH
1 stop14h 04m
Multiple Airlines
Sat 11/47:47 a.m.
IAH
-
YOW
1 stop15h 11m
Multiple Airlines
Deal found 2/3C$ 474
Tue 7/47:00 a.m.
YOW
-
IAH
1 stop11h 32m
Multiple Airlines
Wed 8/47:05 a.m.
IAH
-
YOW
1 stop9h 20m
Multiple Airlines
Deal found 2/3C$ 478
Mon 6/49:30 a.m.
YOW
-
IAH
1 stop27h 16m
Multiple Airlines
Wed 8/46:46 a.m.
IAH
-
YOW
1 stop9h 39m
Multiple Airlines
Deal found 2/3C$ 484
Wed 8/47:00 a.m.
YOW
-
IAH
1 stop11h 32m
Multiple Airlines
Thu 9/41:17 p.m.
IAH
-
YOW
1 stop9h 41m
Multiple Airlines
Deal found 4/3C$ 485
Tue 5/56:55 a.m.
YOW
-
HOU
2 stops10h 33m
WestJet
Fri 8/51:06 p.m.
HOU
-
YOW
2 stops10h 14m
WestJet
Deal found 2/3C$ 807
Fri 1/56:55 a.m.
YOW
-
HOU
2 stops17h 12m
WestJet
Sun 10/56:00 a.m.
HOU
-
YOW
2 stops17h 20m
WestJet
Deal found 2/3C$ 874
Thu 26/38:40 a.m.
YOW
-
HOU
2 stops12h 10m
American Airlines
Wed 1/46:00 a.m.
HOU
-
YOW
2 stops9h 51m
American Airlines
Deal found 4/3C$ 876

Find flight deals from Ottawa to Houston

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Houston (HO1). 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 6 March 2026.

Round-trip from

C$ 367

One-way from

C$ 268

Popular in

August

Cheapest in

December

Average price

C$ 929
23/4-30/4
  • 23/4-30/4
  • 2 total stops
  • 22h 50m total
  • Ottawa to Houston
Search Deals
17/4
  • 17/4
  • 2 total stops
  • 26h 24m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 37 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 Houston 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 6 March 2026.
Use the filters below to find and compare flights from Ottawa to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 8/4

7:00 a.m.-5:32 p.m.

1 stop11h 32m

Houston George Bush Intcntl

Fri 10/4

8:02 a.m.-5:13 p.m.

1 stop8h 11m

C$ 544

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 2/4

6:50 a.m.-6:14 p.m.

2 stops12h 24m

Houston George Bush Intcntl

Thu 9/4

11:15 a.m.-11:58 p.m.

1 stop11h 43m

C$ 572

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 16/4

3:05 p.m.-12:53 p.m.

2 stops22h 48m

Houston George Bush Intcntl

Sun 19/4

10:15 p.m.-4:53 p.m.

3 stops41h 38m

C$ 641
Quickest round-trip

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 15/4

2:50 p.m.-8:29 p.m.

1 stop6h 39m

Houston George Bush Intcntl

Tue 21/4

11:50 a.m.-6:36 p.m.

1 stop5h 46m

C$ 742

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 7/4

2:50 p.m.-8:29 p.m.

1 stop6h 39m

Houston George Bush Intcntl

Wed 8/4

7:00 a.m.-3:21 p.m.

1 stop7h 21m

C$ 761

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Sun 29/3

5:00 a.m.-11:00 a.m.

1 stop7h 00m

Houston George Bush Intcntl

Thu 2/4

11:50 a.m.-7:36 p.m.

1 stop6h 46m

C$ 768

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 15/4

6:00 a.m.-3:49 p.m.

3 stops10h 49m

Houston George Bush Intcntl

Sun 19/4

2:45 p.m.-10:05 p.m.

1 stop6h 20m

C$ 794

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 5/5

6:55 a.m.-4:28 p.m.

2 stops10h 33m

Houston Hobby

Fri 8/5

1:06 p.m.-12:20 a.m.

2 stops10h 14m

C$ 807

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 8/4

6:00 a.m.-11:03 a.m.

1 stop6h 03m

Houston George Bush Intcntl

Wed 8/4

2:43 p.m.-10:05 p.m.

1 stop6h 22m

C$ 807

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 2/4

6:00 a.m.-3:49 p.m.

2 stops10h 49m

Houston George Bush Intcntl

Sun 5/4

5:00 a.m.-6:55 p.m.

2 stops12h 55m

C$ 815

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 33 resultsSorted by cheapest first
1
2
3
4

Best time to book a flight from Ottawa to Houston

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

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

Currently, July is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 370). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 679). 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 Houston

Get insights into the airlines that provide service to Houston. 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 Houston. Reviews last updated 6 March 2026.
Read reviews from past customers who have flown United Airlines and Air Canada from Ottawa to Houston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,403 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
9,403 reviews
United Airlines
7.4
Good
9,403 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
Air Canada
7.1
Good
10,780 reviews
United Airlines
7.4
Good
9,403 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ottawa to Houston?

    Most people fly from Ottawa (YOW) if they book a flight from Ottawa to Houston. On average, Ottawa has 0 outbound flights to Houston per day from 2 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

  • How long is the flight from Ottawa to Houston?

    A quick flight from Ottawa to Houston can take about 6h 39m. Air Canada provides one of the quickest options available for as low as C$ 742. Ottawa and Houston are separated by a distance of 2416 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    United Airlines, at C$ 483, was found to be the cheapest airline from Ottawa to Houston. An alternate airline flying to your destination would be Air Canada. United Airlines is 44% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 370). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 679). 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 Houston

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Dallas/Fort Worth flights
Pearson Intl to Hobby flights
Pearson Intl to George Bush Intcntl flights
Pierre Elliott Trudeau Intl to Dallas/Fort Worth flights
Pearson Intl to Austin flights
Pearson Intl to Love Field flights
Toronto Island to Dallas/Fort Worth flights
Pierre Elliott Trudeau Intl to Hobby flights
Pierre Elliott Trudeau Intl to George Bush Intcntl flights
Ottawa to Hobby flights
Hamilton to George Bush Intcntl flights
Pearson Intl to San Antonio flights
Pierre Elliott Trudeau Intl to Love Field flights
Ottawa to George Bush Intcntl flights
Region of Waterloo Intl to Hobby flights
Ottawa to Dallas/Fort Worth flights
Pierre Elliott Trudeau Intl to Austin flights
Hamilton to Dallas/Fort Worth flights
Ottawa to Austin flights
Ottawa to Love Field flights
Hamilton to Austin flights
Pierre Elliott Trudeau Intl to San Antonio flights
Pearson Intl to Lubbock flights
Pearson Intl to El Paso flights
Pearson Intl to Brownsville flights
Pearson Intl to Corpus Christi flights
Pierre Elliott Trudeau Intl to El Paso flights
London to Dallas/Fort Worth flights
Ottawa to El Paso flights
Ottawa to San Antonio flights
Pearson Intl to Laredo flights
Region of Waterloo Intl to Dallas/Fort Worth flights
Pierre Elliott Trudeau Intl to Midland flights
Pierre Elliott Trudeau Intl to McAllen flights
London to Love Field flights
Pierre Elliott Trudeau Intl to Waco flights
Pearson Intl to Killeen flights
Ottawa to Killeen flights

Top 2 airlines flying from Ottawa to Houston

Discover the top 2 airlines that operate flights from Ottawa to Houston. 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 6 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 483AverageC$ 852FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 566AverageC$ 845FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Houston?

When you search for this flight from Ottawa to Houston, 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 Houston?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Houston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Houston from Ottawa shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Ottawa to Houston flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the 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.