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Cheap flights from Ottawa to Houston from C$ 313

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
7 Sep — 14 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 8 August 2026.

Sat 19/97:00 a.m. -
1 stop9h 17m
Thu 24/98:25 a.m. -
2 stops14h 55m
Deal found 7/8C$ 499
Sat 19/97:00 a.m. -
1 stop9h 17m
Fri 25/98:25 a.m. -
2 stops14h 55m
Deal found 7/8C$ 513
Sat 19/97:00 a.m. -
1 stop9h 17m
Wed 23/95:41 p.m. -
2 stops24h 39m
Deal found 7/8C$ 526
Fri 18/97:00 a.m. -
1 stop15h 14m
Sun 20/98:25 p.m. -
1 stop26h 23m
Deal found 7/8C$ 528
Fri 18/97:00 a.m. -
1 stop15h 14m
Fri 25/98:25 a.m. -
2 stops14h 55m
Deal found 7/8C$ 541
Fri 18/97:00 a.m. -
1 stop15h 14m
Tue 22/95:53 p.m. -
2 stops24h 27m
Deal found 7/8C$ 551
Mon 21/94:15 p.m. -
1 stop29h 59m
Fri 25/96:30 a.m. -
1 stop9h 45m
Deal found 7/8C$ 562
Tue 22/97:00 a.m. -
2 stops15h 14m
Fri 25/96:30 a.m. -
1 stop9h 45m
Deal found 7/8C$ 576
Fri 30/108:00 a.m. -
1 stop13h 20m
Mon 2/118:44 p.m. -
2 stops19h 00m
Deal found 4/8C$ 589
Mon 21/97:00 a.m. -
1 stop9h 17m
Thu 24/98:25 a.m. -
2 stops14h 55m
Deal found 7/8C$ 591
Tue 22/121:00 p.m. -
2 stops11h 44m
Sat 26/125:40 a.m. -
2 stops11h 18m
Deal found 7/8C$ 1,056
Fri 11/96:55 a.m. -
2 stops16h 44m
Sat 12/95:26 p.m. -
2 stops23h 09m
Deal found 4/8C$ 1,125

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 8 August 2026.

Round-trip from

C$ 499

One-way from

C$ 313

Popular in

September

Cheapest in

October

Average price

C$ 1,184
19/9-24/9
  • 19/9-24/9
  • 3 total stops
  • 24h 12m total
  • Ottawa to Houston
Search Deals
19/9
  • 19/9
  • 2 total stops
  • 16h 30m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 35 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 8 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

Thu 1/10

6:05 a.m.-1:39 p.m.

1 stop8h 34m

Houston George Bush Intcntl

Mon 5/10

2:51 p.m.-11:54 p.m.

1 stop8h 03m

C$ 836

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$ 885
Quickest round-trip

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Wed 30/12

5:10 a.m.-10:53 a.m.

1 stop6h 43m

Houston George Bush Intcntl

Wed 31/3

12:00 p.m.-7:26 p.m.

1 stop6h 26m

C$ 891

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.-5:35 a.m.

1 stop13h 45m

C$ 910

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Mon 21/12

6:15 a.m.-8:42 p.m.

1 stop15h 27m

Houston George Bush Intcntl

Thu 31/12

2:39 p.m.-9:56 p.m.

1 stop6h 17m

C$ 938

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sun 20/9

6:05 a.m.-1:39 p.m.

1 stop8h 34m

Houston George Bush Intcntl

Tue 22/9

1:45 p.m.-9:35 p.m.

1 stop6h 50m

C$ 941

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Tue 22/12

9:45 a.m.-9:30 p.m.

2 stops12h 45m

Houston George Bush Intcntl

Sat 26/12

10:07 p.m.-3:10 p.m.

2 stops16h 03m

C$ 941

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Tue 22/9

5:20 p.m.-12:27 a.m.

1 stop8h 07m

Houston George Bush Intcntl

Wed 23/9

1:45 p.m.-9:35 p.m.

1 stop6h 50m

C$ 941

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Wed 30/12

2:48 p.m.-9:22 p.m.

1 stop7h 34m

Houston George Bush Intcntl

Wed 31/3

5:00 a.m.-2:07 p.m.

2 stops8h 07m

C$ 941

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sat 22/8

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

1 stop16h 20m

Houston George Bush Intcntl

Fri 28/8

6:30 a.m.-11:35 a.m.

2 stops28h 05m

C$ 1,009

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 38 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$ 716). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 1,001). 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$ 816 and C$ 1,184 in September.
The cheapest round-trip price found within the last 5 days was C$ 499 on Multiple Airlines (19 Sep-24 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 8 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
10,081 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

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
10,081 reviews
United Airlines
7.4
Good
10,081 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

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
11,436 reviews
United Airlines
7.4
Good
10,081 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

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. American Airlines provides one of the quickest options available for as low as C$ 1,125. 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$ 309, 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$ 716). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 1,001). 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 8 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 309AverageC$ 895FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 494AverageC$ 897FlexibilityNo 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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