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Cheap flights from Ottawa to Houston from C$ 296

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
17 May — 24 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 17 April 2026.

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 16/4C$ 512
Mon 27/47:00 a.m.
YOW
-
IAH
1 stop16h 33m
Multiple Airlines
Wed 29/410:30 a.m.
IAH
-
YOW
2 stops18h 05m
Multiple Airlines
Deal found 13/4C$ 521
Wed 22/47:00 a.m.
YOW
-
IAH
1 stop29h 27m
Multiple Airlines
Tue 28/412:35 p.m.
IAH
-
YOW
2 stops27h 50m
Multiple Airlines
Deal found 13/4C$ 523
Fri 24/47:00 a.m.
YOW
-
IAH
1 stop8h 46m
Multiple Airlines
Thu 30/412:35 p.m.
IAH
-
YOW
2 stops10h 50m
Multiple Airlines
Deal found 16/4C$ 527
Tue 9/62:20 p.m.
YOW
-
IAH
1 stop25h 54m
Multiple Airlines
Tue 16/68:53 p.m.
IAH
-
YOW
2 stops31h 42m
Multiple Airlines
Deal found 14/4C$ 528
Wed 22/47:00 a.m.
YOW
-
IAH
1 stop29h 27m
Multiple Airlines
Wed 29/412:35 p.m.
IAH
-
YOW
2 stops34h 50m
Multiple Airlines
Deal found 15/4C$ 542
Mon 27/47:00 a.m.
YOW
-
IAH
1 stop16h 33m
Multiple Airlines
Tue 28/46:14 p.m.
IAH
-
YOW
2 stops22h 11m
Multiple Airlines
Deal found 13/4C$ 553
Mon 27/47:00 a.m.
YOW
-
IAH
1 stop16h 33m
Multiple Airlines
Thu 30/49:46 a.m.
IAH
-
YOW
1 stop13h 39m
Multiple Airlines
Deal found 12/4C$ 558
Tue 2/61:20 p.m.
YOW
-
IAH
1 stop10h 20m
Multiple Airlines
Fri 5/68:29 a.m.
IAH
-
YOW
1 stop29h 46m
Multiple Airlines
Deal found 16/4C$ 562
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 16/4C$ 565
Tue 2/66:55 a.m.
YOW
-
HOU
2 stops27h 37m
WestJet
Fri 5/61:06 p.m.
HOU
-
YOW
2 stops10h 14m
WestJet
Deal found 16/4C$ 902
Sun 24/56:55 a.m.
YOW
-
HOU
2 stops27h 37m
WestJet
Tue 26/55:02 p.m.
HOU
-
YOW
2 stops30h 18m
WestJet
Deal found 14/4C$ 949

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 April 2026.

Round-trip from

C$ 521

One-way from

C$ 296

Popular in

September

Cheapest in

December

Average price

C$ 854
27/4-29/4
  • 27/4-29/4
  • 3 total stops
  • 34h 38m total
  • Ottawa to Houston
Search Deals
31/5
  • 31/5
  • 1 total stop
  • 7h 09m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 160 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 April 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 April 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 6/6

7:00 a.m.-12:34 p.m.

2 stops30h 34m

Houston George Bush Intcntl

Sat 13/6

6:50 a.m.-5:37 p.m.

1 stop9h 47m

C$ 573

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 3/6

7:00 a.m.-10:16 p.m.

2 stops16h 16m

Houston George Bush Intcntl

Sun 7/6

6:30 a.m.-5:35 a.m.

2 stops22h 05m

C$ 610

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 8/5

7:00 a.m.-3:03 p.m.

1 stop9h 03m

Houston George Bush Intcntl

Mon 18/5

6:50 a.m.-12:15 p.m.

1 stop28h 25m

C$ 701

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 16/6

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

1 stop16h 20m

Houston George Bush Intcntl

Thu 18/6

8:50 a.m.-12:20 a.m.

2 stops14h 30m

C$ 726

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 8/10

9:05 a.m.-6:39 p.m.

1 stop10h 34m

Houston George Bush Intcntl

Sun 11/10

7:34 p.m.-12:20 p.m.

1 stop15h 46m

C$ 745

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 5/5

1:20 p.m.-1:55 p.m.

1 stop25h 35m

Houston George Bush Intcntl

Fri 8/5

6:30 a.m.-5:35 a.m.

1 stop22h 05m

C$ 764

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 6/8

7:00 a.m.-6:09 p.m.

2 stops12h 09m

Houston George Bush Intcntl

Fri 14/8

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

1 stop13h 45m

C$ 778
Quickest round-trip

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 2/6

6:55 a.m.-4:09 p.m.

2 stops10h 14m

Houston Hobby

Sat 6/6

6:00 a.m.-5:35 p.m.

2 stops10h 35m

C$ 934

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Sun 24/5

6:55 a.m.-9:32 a.m.

2 stops27h 37m

Houston Hobby

Tue 26/5

5:02 p.m.-12:20 a.m.

2 stops30h 18m

C$ 949

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 2/6

6:55 a.m.-4:09 p.m.

2 stops10h 14m

Houston Hobby

Fri 5/6

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

2 stops17h 20m

C$ 983

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/4

Showing 1-10 of 31 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$ 229). Flying from Ottawa to Houston in June is currently the most expensive (average of C$ 787). 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 17 April 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
9,602 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

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
9,602 reviews
United Airlines
7.4
Good
9,602 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

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
10,932 reviews
United Airlines
7.4
Good
9,602 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

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 14m. WestJet provides one of the quickest options available for as low as C$ 934. Ottawa and Houston are separated by a distance of 2441 km.

  • 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 45% 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$ 229). Flying from Ottawa to Houston in June is currently the most expensive (average of C$ 787). 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 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 485AverageC$ 871FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 570AverageC$ 831FlexibilityNo 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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