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Cheap flights from Ottawa to Houston from C$ 251

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
19 Mar — 26 Mar1
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 17 February 2026.

Tue 24/39:30 a.m.
YOW
-
IAH
1 stop11h 50m
Multiple Airlines
Tue 31/39:15 p.m.
IAH
-
YOW
1 stop18h 58m
Multiple Airlines
Deal found 14/2C$ 415
Wed 25/39:30 a.m.
YOW
-
IAH
1 stop11h 50m
Multiple Airlines
Fri 3/49:05 p.m.
IAH
-
YOW
1 stop25h 53m
Multiple Airlines
Deal found 17/2C$ 436
Wed 4/34:15 p.m.
YOW
-
IAH
1 stop16h 45m
Multiple Airlines
Tue 10/39:15 p.m.
IAH
-
YOW
1 stop25h 47m
Multiple Airlines
Deal found 15/2C$ 460
Wed 4/34:15 p.m.
YOW
-
IAH
1 stop16h 45m
Multiple Airlines
Wed 11/36:00 a.m.
IAH
-
YOW
2 stops34h 25m
Multiple Airlines
Deal found 15/2C$ 467
Thu 26/34:15 p.m.
YOW
-
IAH
1 stop8h 44m
Multiple Airlines
Thu 2/411:32 a.m.
IAH
-
YOW
1 stop11h 53m
Multiple Airlines
Deal found 14/2C$ 475
Thu 5/33:05 p.m.
YOW
-
IAH
2 stops17h 24m
Multiple Airlines
Tue 10/39:15 p.m.
IAH
-
YOW
1 stop25h 47m
Multiple Airlines
Deal found 15/2C$ 480
Tue 5/55:55 a.m.
YOW
-
HOU
2 stops11h 33m
WestJet
Fri 8/51:16 p.m.
HOU
-
YOW
2 stops10h 04m
WestJet
Deal found 14/2C$ 839
Fri 12/65:55 a.m.
YOW
-
HOU
2 stops16h 43m
WestJet
Mon 15/610:05 a.m.
HOU
-
YOW
2 stops13h 15m
WestJet
Deal found 16/2C$ 963
Sat 4/45:40 a.m.
YOW
-
HOU
2 stops18h 11m
WestJet
Sat 11/45:22 p.m.
HOU
-
YOW
2 stops30h 17m
WestJet
Deal found 14/2C$ 971
Wed 15/45:45 p.m.
YOW
-
HOU
2 stops41h 13m
WestJet
Tue 21/45:23 p.m.
HOU
-
YOW
2 stops30h 16m
WestJet
Deal found 15/2C$ 1,023
Mon 30/310:00 a.m.
YOW
-
HOU
2 stops10h 50m
American Airlines
Mon 6/48:20 p.m.
HOU
-
YOW
2 stops21h 06m
American Airlines
Deal found 13/2C$ 1,037
Tue 24/35:40 a.m.
YOW
-
HOU
2 stops11h 56m
WestJet
Tue 31/32:13 p.m.
HOU
-
YOW
2 stops9h 26m
WestJet
Deal found 14/2C$ 1,058

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 17 February 2026.

Round-trip from

C$ 415

One-way from

C$ 251

Popular in

August

Cheapest in

December

Average price

C$ 879
24/3-31/3
  • 24/3-31/3
  • 2 total stops
  • 30h 48m total
  • Ottawa to Houston
Search Deals
30/3
  • 30/3
  • 1 total stop
  • 18h 58m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 198 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 February 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 17 February 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

Wed 25/3

9:30 a.m.-8:20 p.m.

1 stop11h 50m

Houston George Bush Intcntl

Fri 3/4

9:05 p.m.-11:58 p.m.

1 stop25h 53m

C$ 436

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 25/3

9:30 a.m.-8:20 p.m.

1 stop11h 50m

Houston George Bush Intcntl

Sat 28/3

5:15 a.m.-12:35 p.m.

2 stops30h 20m

C$ 493

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 5/5

6:15 p.m.-1:55 p.m.

2 stops20h 40m

Houston George Bush Intcntl

Fri 8/5

6:30 a.m.-12:30 p.m.

2 stops29h 00m

C$ 520

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 6/3

4:15 p.m.-12:18 a.m.

1 stop9h 03m

Houston George Bush Intcntl

Fri 13/3

5:15 a.m.-5:25 p.m.

2 stops11h 10m

C$ 544

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 24/3

7:00 a.m.-10:24 a.m.

2 stops28h 24m

Houston George Bush Intcntl

Tue 31/3

9:47 p.m.-12:39 a.m.

3 stops25h 52m

C$ 550

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 18/3

3:55 p.m.-1:54 p.m.

2 stops22h 59m

Houston George Bush Intcntl

Wed 25/3

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

1 stop9h 20m

C$ 552

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 5/5

5:55 a.m.-4:28 p.m.

2 stops11h 33m

Houston Hobby

Fri 8/5

1:16 p.m.-12:20 a.m.

2 stops10h 04m

C$ 839

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Fri 12/6

5:55 a.m.-9:38 p.m.

2 stops16h 43m

Houston Hobby

Mon 15/6

10:05 a.m.-12:20 a.m.

2 stops13h 15m

C$ 963

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Sat 4/4

5:40 a.m.-10:51 p.m.

2 stops18h 11m

Houston Hobby

Sat 11/4

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

2 stops30h 17m

C$ 971

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Wed 15/4

5:45 p.m.-9:58 a.m.

2 stops41h 13m

Houston Hobby

Tue 21/4

5:23 p.m.-12:39 a.m.

2 stops30h 16m

C$ 1,023

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/2

Showing 1-10 of 28 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$ 369). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 677). 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 17 February 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
9,308 reviews
Check prices

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

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
9,308 reviews
United Airlines
7.4
Good
9,308 reviews
Check prices

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

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
10,727 reviews
United Airlines
7.4
Good
9,308 reviews
Check prices

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

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 20h 40m. WestJet provides one of the quickest options available for as low as C$ 520. Ottawa and Houston are separated by a distance of 2416 km.

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

    United Airlines, at C$ 482, 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$ 369). Flying from Ottawa to Houston in August is currently the most expensive (average of C$ 677). 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 17 February 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 482AverageC$ 851FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 565AverageC$ 838FlexibilityNo 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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