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Cheap flights from Ottawa to Houston from C$ 275

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
29 Apr — 6 May1
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 30 March 2026.

Thu 16/43:05 p.m.
YOW
-
IAH
2 stops18h 33m
Multiple Airlines
Sat 18/42:01 p.m.
IAH
-
YOW
1 stop8h 57m
Multiple Airlines
Deal found 29/3C$ 458
Thu 30/44:20 p.m.
YOW
-
IAH
1 stop17h 18m
Multiple Airlines
Wed 6/56:50 a.m.
IAH
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 28/3C$ 482
Mon 4/57:00 a.m.
YOW
-
IAH
1 stop16h 33m
Multiple Airlines
Wed 6/56:50 a.m.
IAH
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 28/3C$ 489
Tue 28/47:00 a.m.
YOW
-
IAH
1 stop29h 27m
Multiple Airlines
Wed 6/56:50 a.m.
IAH
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 28/3C$ 490
Thu 30/44:20 p.m.
YOW
-
IAH
1 stop17h 18m
Multiple Airlines
Thu 7/56:50 a.m.
IAH
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 28/3C$ 496
Mon 4/54:20 p.m.
YOW
-
IAH
1 stop17h 30m
Multiple Airlines
Thu 7/56:50 a.m.
IAH
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 28/3C$ 499
Thu 9/47:00 a.m.
YOW
-
IAH
1 stop17h 59m
Multiple Airlines
Wed 29/43:31 p.m.
IAH
-
YOW
1 stop24h 54m
Multiple Airlines
Deal found 29/3C$ 503
Thu 23/47:00 a.m.
YOW
-
IAH
1 stop9h 11m
Multiple Airlines
Thu 30/49:46 a.m.
IAH
-
YOW
1 stop13h 39m
Multiple Airlines
Deal found 26/3C$ 504
Tue 21/47:00 a.m.
YOW
-
IAH
1 stop16h 47m
Multiple Airlines
Tue 28/46:44 p.m.
IAH
-
YOW
1 stop21h 41m
Multiple Airlines
Deal found 25/3C$ 510
Tue 28/46:55 a.m.
YOW
-
HOU
2 stops17h 14m
Delta
Thu 7/56:00 a.m.
HOU
-
YOW
2 stops17h 20m
Delta
Deal found 28/3C$ 811
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 30/3C$ 850
Fri 1/56:55 a.m.
YOW
-
HOU
2 stops10h 33m
WestJet
Thu 7/56:00 a.m.
HOU
-
YOW
2 stops10h 35m
WestJet
Deal found 28/3C$ 960

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 30 March 2026.

Round-trip from

C$ 458

One-way from

C$ 275

Popular in

August

Cheapest in

May

Average price

C$ 952
16/4-18/4
  • 16/4-18/4
  • 3 total stops
  • 27h 30m total
  • Ottawa to Houston
Search Deals
9/4
  • 9/4
  • 1 total stop
  • 11h 53m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 41 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 30 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 11/4

9:35 a.m.-8:40 a.m.

2 stops24h 05m

Houston George Bush Intcntl

Fri 24/4

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

2 stops17h 39m

C$ 618

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 10/6

2:20 p.m.-10:11 p.m.

1 stop8h 51m

Houston George Bush Intcntl

Tue 25/8

3:26 p.m.-12:25 p.m.

1 stop19h 59m

C$ 643

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 15/4

10:44 a.m.-5:11 p.m.

1 stop7h 27m

Houston George Bush Intcntl

Sun 19/4

7:25 a.m.-6:55 p.m.

1 stop10h 30m

C$ 771
Quickest round-trip

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 9/7

7:30 p.m.-12:45 a.m.

1 stop6h 15m

Houston George Bush Intcntl

Mon 13/7

1:46 p.m.-10:05 p.m.

1 stop7h 19m

C$ 771

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 14/4

6:25 a.m.-3:49 p.m.

1 stop10h 24m

Houston George Bush Intcntl

Fri 17/4

1:38 p.m.-10:05 p.m.

1 stop7h 27m

C$ 771

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 10/7

5:20 p.m.-12:34 a.m.

1 stop8h 14m

Houston George Bush Intcntl

Sun 12/7

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

1 stop7h 55m

C$ 771

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Mon 13/4

5:25 p.m.-1:48 a.m.

1 stop9h 23m

Houston George Bush Intcntl

Fri 17/4

6:15 a.m.-5:07 p.m.

1 stop9h 52m

C$ 771

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 21/8

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

2 stops10h 38m

Houston George Bush Intcntl

Fri 28/8

4:35 p.m.-11:54 p.m.

1 stop6h 19m

C$ 772

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Mon 4/5

6:55 a.m.-11:07 p.m.

2 stops17h 12m

Houston Hobby

Thu 7/5

6:00 a.m.-12:20 a.m.

2 stops17h 20m

C$ 811

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 28/4

6:55 a.m.-11:09 p.m.

2 stops17h 14m

Houston Hobby

Wed 6/5

10:53 a.m.-12:20 a.m.

2 stops12h 27m

C$ 811

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/3

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, July is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 376). Flying from Ottawa to Houston in March is currently the most expensive (average of C$ 663). 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?

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 30 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
9,514 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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
9,514 reviews
United Airlines
7.4
Good
9,514 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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
10,861 reviews
United Airlines
7.4
Good
9,514 reviews
Check prices

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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 10h 33m. Delta provides one of the quickest options available for as low as C$ 850. 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$ 491, 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$ 376). Flying from Ottawa to Houston in March is currently the most expensive (average of C$ 663). 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 30 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 491AverageC$ 868FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 576AverageC$ 859FlexibilityNo 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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