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Cheap flights from Ottawa to Houston from C$ 222

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
1 Feb — 8 Feb1
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 2 January 2026.

Sat 17/14:15 p.m.YOW - IAH
1 stop22h 05mMultiple Airlines
Fri 6/211:08 a.m.IAH - YOW
1 stop29h 07mMultiple Airlines
Deal found 1/1C$ 375
Thu 22/14:15 p.m.YOW - IAH
1 stop8h 43mMultiple Airlines
Fri 6/211:08 a.m.IAH - YOW
1 stop29h 07mMultiple Airlines
Deal found 1/1C$ 384
Sat 17/14:15 p.m.YOW - IAH
1 stop22h 05mMultiple Airlines
Wed 4/28:45 a.m.IAH - YOW
2 stops38h 54mMultiple Airlines
Deal found 1/1C$ 390
Thu 22/14:15 p.m.YOW - IAH
1 stop8h 43mMultiple Airlines
Wed 4/28:45 a.m.IAH - YOW
2 stops38h 54mMultiple Airlines
Deal found 1/1C$ 399
Thu 22/14:15 p.m.YOW - IAH
1 stop8h 43mMultiple Airlines
Tue 3/27:45 a.m.IAH - YOW
1 stop8h 40mMultiple Airlines
Deal found 1/1C$ 403
Wed 14/17:00 a.m.YOW - IAH
1 stop31h 20mMultiple Airlines
Tue 20/17:45 a.m.IAH - YOW
1 stop8h 40mMultiple Airlines
Deal found 1/1C$ 412
Sat 17/110:00 a.m.YOW - IAH
2 stops11h 23mMultiple Airlines
Tue 3/27:45 a.m.IAH - YOW
1 stop8h 40mMultiple Airlines
Deal found 1/1C$ 414
Wed 14/17:00 a.m.YOW - IAH
1 stop31h 20mMultiple Airlines
Wed 21/17:45 a.m.IAH - YOW
1 stop8h 40mMultiple Airlines
Deal found 1/1C$ 421
Thu 22/14:15 p.m.YOW - IAH
1 stop8h 43mMultiple Airlines
Thu 5/27:45 a.m.IAH - YOW
1 stop8h 40mMultiple Airlines
Deal found 1/1C$ 424
Tue 20/19:30 a.m.YOW - IAH
1 stop13h 27mMultiple Airlines
Tue 3/27:45 a.m.IAH - YOW
1 stop8h 40mMultiple Airlines
Deal found 1/1C$ 428
Thu 29/14:15 p.m.YOW - IAH
1 stop8h 43mMultiple Airlines
Thu 5/24:35 p.m.IAH - YOW
2 stops24h 53mMultiple Airlines
Deal found 1/1C$ 432
Mon 30/35:40 a.m.YOW - HOU
2 stops29h 59mDelta
Wed 8/46:00 a.m.HOU - YOW
2 stops17h 39mDelta
Deal found 1/1C$ 929

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 2 January 2026.

Round-trip from

C$ 375

One-way from

C$ 222

Popular in

August

Cheapest in

October

Average price

C$ 855
17/1-6/2
  • 17/1-6/2
  • 2 total stops
  • 51h 12m total
  • Ottawa to Houston
Search Deals
5/3
  • 5/3
  • 1 total stop
  • 9h 03m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 201 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 2 January 2026.
Use the filters below to find and compare flights from Ottawa to Houston that are best for you.

Fly from

Ottawa

Fly to

Houston

Route

Depart

Return

Price

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Sat 31/1

3:55 p.m.-3:10 p.m.

1 stop24h 15m

Houston George Bush Intcntl

Sat 28/2

7:05 a.m.-12:35 p.m.

1 stop28h 30m

C$ 454

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 13/1

7:00 a.m.-8:40 a.m.

1 stop26h 40m

Houston George Bush Intcntl

Fri 16/1

8:19 p.m.-11:58 p.m.

1 stop26h 39m

C$ 465

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 13/5

3:50 p.m.-8:45 a.m.

1 stop17h 55m

Houston George Bush Intcntl

Mon 18/5

6:38 p.m.-12:58 p.m.

2 stops17h 20m

C$ 471

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 4/3

5:40 a.m.-5:30 p.m.

2 stops12h 50m

Houston George Bush Intcntl

Mon 9/3

1:35 p.m.-12:40 a.m.

1 stop10h 05m

C$ 645

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 5/3

5:45 p.m.-5:30 p.m.

1 stop24h 45m

Houston George Bush Intcntl

Mon 9/3

1:35 p.m.-12:40 a.m.

1 stop10h 05m

C$ 674

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Mon 30/3

5:40 a.m.-10:39 a.m.

2 stops29h 59m

Houston Hobby

Wed 8/4

6:00 a.m.-12:39 a.m.

2 stops17h 39m

C$ 929

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Sat 4/4

5:40 a.m.-10:42 p.m.

2 stops18h 02m

Houston Hobby

Wed 8/4

5:27 p.m.-12:39 a.m.

2 stops30h 12m

C$ 929

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 31/3

5:40 a.m.-10:42 p.m.

2 stops18h 02m

Houston Hobby

Wed 8/4

5:27 p.m.-12:39 a.m.

2 stops30h 12m

C$ 929

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Fri 27/3

5:40 a.m.-9:21 a.m.

2 stops28h 41m

Houston Hobby

Mon 30/3

5:22 p.m.-12:39 a.m.

2 stops30h 17m

C$ 950

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Thu 2/4

5:40 a.m.-10:42 p.m.

2 stops18h 02m

Houston Hobby

Wed 8/4

11:44 a.m.-12:39 a.m.

2 stops11h 55m

C$ 963

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/12

Showing 1-10 of 24 results
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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$ 399). 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 2 January 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
9,132 reviews
Check prices

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

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
9,132 reviews
United Airlines
7.4
Good
9,132 reviews
Check prices

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

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
10,574 reviews
United Airlines
7.4
Good
9,132 reviews
Check prices

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

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 28h 41m. Delta provides one of the quickest options available for as low as C$ 950. Ottawa and Houston are separated by a distance of 2441 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$ 485, 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 43% 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$ 399). 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

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Alternative routes for Ottawa to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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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 2 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 485AverageC$ 859FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 570AverageC$ 852FlexibilityNo 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.

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