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Cheap flights from Ottawa to Houston from C$ 270

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
11 Sep — 18 Sep1
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 12 August 2026.

Fri 18/97:00 a.m. -
1 stop15h 14m
Sun 20/98:25 p.m. -
1 stop26h 23m
Deal found 7/8C$ 527
Fri 9/104:15 p.m. -
1 stop22h 40m
Wed 14/102:50 p.m. -
1 stop13h 45m
Deal found 9/8C$ 535
Mon 14/94:15 p.m. -
2 stops31h 15m
Fri 25/96:30 a.m. -
1 stop11h 50m
Deal found 8/8C$ 557
Thu 17/91:20 p.m. -
1 stop10h 20m
Sun 20/98:25 p.m. -
1 stop26h 23m
Deal found 8/8C$ 571
Tue 1/126:00 a.m. -
1 stop11h 35m
Fri 4/126:20 p.m. -
1 stop28h 25m
Deal found 8/8C$ 616
Sun 13/97:20 a.m. -
1 stop16h 20m
Tue 15/94:21 p.m. -
2 stops22h 54m
Deal found 7/8C$ 646
Sun 13/97:20 a.m. -
1 stop16h 20m
Tue 15/92:50 p.m. -
1 stop13h 45m
Deal found 7/8C$ 663
Thu 8/108:35 a.m. -
1 stop15h 05m
Mon 12/108:44 p.m. -
2 stops42h 36m
Deal found 11/8C$ 720
Thu 8/101:20 p.m. -
1 stop10h 20m
Mon 12/106:30 a.m. -
1 stop11h 50m
Deal found 11/8C$ 727
Sun 13/96:25 p.m. -
2 stops29h 14m
Tue 15/95:26 p.m. -
2 stops29h 54m
Deal found 7/8C$ 1,042
Fri 9/106:25 p.m. -
2 stops29h 38m
Wed 14/103:09 p.m. -
2 stops8h 11m
Deal found 9/8C$ 1,049
Tue 22/121:00 p.m. -
2 stops11h 44m
Sat 26/125:40 a.m. -
2 stops11h 18m
Deal found 7/8C$ 1,052

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 12 August 2026.

Round-trip from

C$ 527

One-way from

C$ 270

Popular in

September

Cheapest in

October

Average price

C$ 1,180
18/9-20/9
  • 18/9-20/9
  • 2 total stops
  • 41h 37m total
  • Ottawa to Houston
Search Deals
4/9
  • 4/9
  • 1 total stop
  • 10h 14m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 12 August 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 Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Fri 9/10

4:15 p.m.-1:55 p.m.

1 stop22h 40m

Houston George Bush Intcntl

Wed 14/10

2:50 p.m.-5:35 a.m.

1 stop13h 45m

C$ 535

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Mon 14/9

4:15 p.m.-10:30 p.m.

2 stops31h 15m

Houston George Bush Intcntl

Fri 25/9

6:30 a.m.-7:20 p.m.

1 stop11h 50m

C$ 557

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sat 19/9

7:00 a.m.-3:17 p.m.

1 stop9h 17m

Houston George Bush Intcntl

Tue 22/9

9:04 p.m.-3:44 p.m.

2 stops17h 40m

C$ 641

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sun 13/9

7:20 a.m.-10:40 p.m.

1 stop16h 20m

Houston George Bush Intcntl

Tue 15/9

4:21 p.m.-4:15 p.m.

2 stops22h 54m

C$ 646

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Thu 17/9

12:25 p.m.-10:40 p.m.

2 stops11h 15m

Houston George Bush Intcntl

Sun 20/9

2:50 p.m.-11:35 a.m.

2 stops19h 45m

C$ 738

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Mon 7/9

7:00 a.m.-3:24 p.m.

1 stop9h 24m

Houston George Bush Intcntl

Wed 9/9

5:41 p.m.-7:20 p.m.

2 stops24h 39m

C$ 829
Quickest round-trip

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Mon 7/9

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

1 stop6h 40m

Houston George Bush Intcntl

Wed 9/9

12:00 p.m.-7:10 p.m.

1 stop6h 10m

C$ 837

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sun 30/8

6:25 p.m.-1:55 p.m.

3 stops20h 30m

Houston George Bush Intcntl

Sat 5/9

2:50 p.m.-11:35 a.m.

2 stops19h 45m

C$ 848

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Tue 29/9

8:15 p.m.-1:55 p.m.

1 stop18h 40m

Houston George Bush Intcntl

Sat 3/10

2:50 p.m.-5:35 a.m.

1 stop13h 45m

C$ 904

OttawaHouston

YOW Ottawa - HOU Houston Hobby

YOWHOU

Ottawa

Fri 9/10

6:25 p.m.-11:03 p.m.

2 stops29h 38m

Houston Hobby

Wed 14/10

3:09 p.m.-12:20 a.m.

2 stops8h 11m

C$ 1,049

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 37 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 713). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 997). 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 Houston?

Airfare is below average for this route at the moment.
Ottawa to Houston flights typically cost between C$ 813 and C$ 1,180 in September.
The cheapest round-trip price found within the last 5 days was C$ 527 on Multiple Airlines (18 Sep-20 Sep).

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 12 August 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
10,111 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.7

Comfort

7.3

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
10,111 reviews
United Airlines
7.4
Good
10,111 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.7

Comfort

7.3

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
11,465 reviews
United Airlines
7.4
Good
10,111 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.7

Comfort

7.3

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 16h 44m. WestJet provides one of the quickest options available for as low as C$ 1,151. 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?

    Air Canada, at C$ 308, was found to be the cheapest airline from Ottawa to Houston. An alternate airline flying to your destination would be United Airlines. Air Canada is 67% 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, October is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 713). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 997). 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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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 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 308AverageC$ 880FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 492AverageC$ 890FlexibilityNo 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 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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