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Cheap flights from Ottawa to Houston from C$ 277

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
23 Apr — 30 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 24 March 2026.

Tue 21/47:00 a.m.
YOW
-
IAH
1 stop16h 47m
Multiple Airlines
Tue 28/412:16 p.m.
IAH
-
YOW
1 stop28h 09m
Multiple Airlines
Deal found 22/3C$ 535
Sat 25/44:15 p.m.
YOW
-
IAH
1 stop20h 12m
Multiple Airlines
Tue 28/412:16 p.m.
IAH
-
YOW
1 stop28h 09m
Multiple Airlines
Deal found 20/3C$ 542
Fri 17/44:20 p.m.
YOW
-
IAH
1 stop17h 18m
Multiple Airlines
Sat 18/42:01 p.m.
IAH
-
YOW
1 stop8h 57m
Multiple Airlines
Deal found 21/3C$ 557
Sun 19/44:15 p.m.
YOW
-
IAH
1 stop30h 40m
Multiple Airlines
Wed 6/53:31 p.m.
IAH
-
YOW
1 stop19h 44m
Multiple Airlines
Deal found 23/3C$ 574
Mon 25/510:10 a.m.
YOW
-
IAH
1 stop23h 40m
Multiple Airlines
Tue 2/63:31 p.m.
IAH
-
YOW
1 stop19h 54m
Multiple Airlines
Deal found 20/3C$ 585
Sat 18/44:15 p.m.
YOW
-
IAH
1 stop20h 12m
Multiple Airlines
Wed 6/53:31 p.m.
IAH
-
YOW
1 stop19h 44m
Multiple Airlines
Deal found 22/3C$ 586
Sat 4/47:00 a.m.
YOW
-
IAH
1 stop12h 23m
Multiple Airlines
Tue 7/48:24 a.m.
IAH
-
YOW
2 stops32h 01m
Multiple Airlines
Deal found 21/3C$ 587
Sun 5/47:00 a.m.
YOW
-
IAH
1 stop11h 53m
Multiple Airlines
Sun 12/411:32 a.m.
IAH
-
YOW
1 stop11h 53m
Multiple Airlines
Deal found 22/3C$ 597
Fri 27/34:20 p.m.
YOW
-
IAH
1 stop29h 00m
Multiple Airlines
Fri 3/47:05 a.m.
IAH
-
YOW
1 stop9h 20m
Multiple Airlines
Deal found 22/3C$ 600
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 20/3C$ 856
Fri 1/56:55 a.m.
YOW
-
HOU
2 stops10h 33m
WestJet
Fri 8/510:27 a.m.
HOU
-
YOW
2 stops12h 53m
WestJet
Deal found 23/3C$ 921
Sat 18/45:40 a.m.
YOW
-
HOU
2 stops11h 48m
WestJet
Wed 6/51:31 p.m.
HOU
-
YOW
2 stops9h 49m
WestJet
Deal found 21/3C$ 998

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 24 March 2026.

Round-trip from

C$ 535

One-way from

C$ 277

Popular in

August

Cheapest in

May

Average price

C$ 940
21/4-28/4
  • 21/4-28/4
  • 2 total stops
  • 44h 56m total
  • Ottawa to Houston
Search Deals
4/5
  • 4/5
  • 1 total stop
  • 17h 45m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 210 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 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 24 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

Sat 4/4

7:00 a.m.-6:23 p.m.

1 stop12h 23m

Houston George Bush Intcntl

Tue 7/4

7:05 a.m.-5:25 p.m.

1 stop9h 20m

C$ 639

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Mon 6/7

7:30 p.m.-8:39 a.m.

1 stop14h 09m

Houston George Bush Intcntl

Tue 7/7

11:55 a.m.-11:54 p.m.

2 stops10h 59m

C$ 827

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 1/5

6:25 a.m.-11:52 a.m.

1 stop6h 27m

Houston George Bush Intcntl

Tue 5/5

2:49 p.m.-10:05 p.m.

1 stop6h 16m

C$ 834
Quickest round-trip

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Sat 22/8

10:37 a.m.-3:38 p.m.

1 stop6h 01m

Houston George Bush Intcntl

Mon 31/8

2:49 p.m.-9:56 p.m.

1 stop6h 07m

C$ 836

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 9/7

6:25 a.m.-1:30 p.m.

1 stop8h 05m

Houston George Bush Intcntl

Mon 13/7

2:31 p.m.-11:54 p.m.

1 stop8h 23m

C$ 836

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Sat 22/8

6:00 a.m.-3:38 p.m.

2 stops10h 38m

Houston George Bush Intcntl

Sun 30/8

5:04 a.m.-1:59 p.m.

1 stop7h 55m

C$ 836

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 21/8

6:00 p.m.-11:30 p.m.

1 stop6h 30m

Houston George Bush Intcntl

Mon 31/8

6:15 a.m.-1:59 p.m.

1 stop6h 44m

C$ 836

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 10/7

6:00 a.m.-10:59 a.m.

1 stop5h 59m

Houston George Bush Intcntl

Sun 12/7

5:04 a.m.-1:59 p.m.

1 stop7h 55m

C$ 836

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 21/8

2:48 p.m.-8:53 p.m.

1 stop7h 05m

Houston George Bush Intcntl

Sun 30/8

6:15 a.m.-1:59 p.m.

1 stop6h 44m

C$ 836

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 15/4

7:30 p.m.-10:37 a.m.

2 stops16h 07m

Houston George Bush Intcntl

Tue 21/4

7:35 a.m.-10:05 p.m.

2 stops13h 30m

C$ 856

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 35 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, July is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 372). Flying from Ottawa to Houston in March is currently the most expensive (average of C$ 655). 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 24 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
9,469 reviews
Check prices

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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
9,469 reviews
United Airlines
7.4
Good
9,469 reviews
Check prices

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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
10,836 reviews
United Airlines
7.4
Good
9,469 reviews
Check prices

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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 10h 33m. United Airlines provides one of the quickest options available for as low as C$ 858. 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$ 372). Flying from Ottawa to Houston in March is currently the most expensive (average of C$ 655). 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 24 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 485AverageC$ 856FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 569AverageC$ 849FlexibilityNo 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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