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Cheap flights from Ottawa to Houston from C$ 421

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
11 Jun — 18 Jun1
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 12 May 2026.

Thu 9/712:25 p.m.
YOW
-
IAH
2 stops11h 15m
WestJet
Mon 13/72:50 p.m.
IAH
-
YOW
1 stop13h 45m
WestJet
Deal found 10/5C$ 644
Sat 22/87:20 a.m.
YOW
-
IAH
1 stop31h 35m
WestJet
Fri 28/82:50 p.m.
IAH
-
YOW
1 stop25h 25m
WestJet
Deal found 11/5C$ 677
Wed 8/74:15 p.m.
YOW
-
IAH
1 stop31h 25m
WestJet
Tue 14/72:50 p.m.
IAH
-
YOW
1 stop13h 45m
WestJet
Deal found 12/5C$ 695
Tue 21/74:15 p.m.
YOW
-
IAH
1 stop22h 40m
WestJet
Mon 27/72:50 p.m.
IAH
-
YOW
1 stop13h 45m
WestJet
Deal found 11/5C$ 697
Sun 7/67:20 a.m.
YOW
-
IAH
2 stops40h 30m
Multiple Airlines
Sun 14/68:55 a.m.
IAH
-
YOW
1 stop29h 05m
Multiple Airlines
Deal found 10/5C$ 741
Thu 4/66:55 a.m.
YOW
-
HOU
2 stops10h 14m
WestJet
Mon 8/66:03 a.m.
HOU
-
YOW
2 stops17h 17m
WestJet
Deal found 9/5C$ 972
Wed 3/66:55 a.m.
YOW
-
HOU
2 stops10h 14m
WestJet
Mon 8/66:03 a.m.
HOU
-
YOW
2 stops17h 17m
WestJet
Deal found 11/5C$ 1,004
Mon 8/66:55 a.m.
YOW
-
HOU
2 stops15h 48m
WestJet
Mon 15/66:03 a.m.
HOU
-
YOW
2 stops41h 17m
WestJet
Deal found 10/5C$ 1,023
Mon 22/66:25 p.m.
YOW
-
HOU
2 stops22h 58m
WestJet
Wed 24/66:03 a.m.
HOU
-
YOW
2 stops17h 17m
WestJet
Deal found 7/5C$ 1,024
Tue 16/66:25 p.m.
YOW
-
HOU
2 stops18h 47m
WestJet
Sat 20/66:03 a.m.
HOU
-
YOW
2 stops34h 32m
WestJet
Deal found 8/5C$ 1,075
Tue 21/76:55 a.m.
YOW
-
HOU
2 stops15h 56m
WestJet
Mon 27/76:00 a.m.
HOU
-
YOW
2 stops17h 20m
WestJet
Deal found 11/5C$ 1,079
Wed 1/76:55 a.m.
YOW
-
HOU
2 stops15h 48m
WestJet
Fri 10/710:40 a.m.
HOU
-
YOW
2 stops12h 40m
WestJet
Deal found 10/5C$ 1,086

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 12 May 2026.

Round-trip from

C$ 644

One-way from

C$ 421

Popular in

September

Cheapest in

October

Average price

C$ 943
WestJet
  • WestJet
  • 9/7-13/7
  • 3 total stops
  • 25h 00m total
  • Ottawa to Houston
Search Deals
16/8
  • 16/8
  • 2 total stops
  • 48h 59m total
  • Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 98 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 May 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 12 May 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

Thu 9/7

12:25 p.m.-10:40 p.m.

2 stops11h 15m

Houston George Bush Intcntl

Mon 13/7

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

1 stop13h 45m

C$ 644

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 4/6

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

1 stop16h 20m

Houston George Bush Intcntl

Mon 8/6

8:50 p.m.-4:53 p.m.

2 stops19h 03m

C$ 782

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Mon 25/5

10:10 a.m.-9:10 p.m.

2 stops36h 00m

Houston George Bush Intcntl

Fri 5/6

8:39 a.m.-3:00 p.m.

1 stop29h 21m

C$ 823
Quickest round-trip

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 10/7

2:35 p.m.-7:38 p.m.

1 stop6h 03m

Houston George Bush Intcntl

Sun 12/7

6:45 a.m.-3:10 p.m.

1 stop7h 25m

C$ 872

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 10/7

12:25 p.m.-10:40 p.m.

2 stops11h 15m

Houston George Bush Intcntl

Sun 12/7

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

2 stops11h 05m

C$ 896

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Tue 1/9

6:25 a.m.-11:47 a.m.

1 stop6h 22m

Houston George Bush Intcntl

Wed 2/9

5:04 a.m.-2:17 p.m.

2 stops8h 13m

C$ 923

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 10/7

3:10 p.m.-8:55 p.m.

1 stop6h 45m

Houston George Bush Intcntl

Sun 12/7

1:41 p.m.-9:35 p.m.

1 stop6h 54m

C$ 952

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 3/6

6:00 a.m.-5:19 p.m.

2 stops12h 19m

Houston George Bush Intcntl

Mon 8/6

6:05 p.m.-5:07 p.m.

2 stops22h 02m

C$ 967

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Thu 4/6

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

2 stops10h 14m

Houston Hobby

Mon 8/6

6:03 a.m.-12:20 a.m.

2 stops17h 17m

C$ 972

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 8/7

12:25 p.m.-1:55 p.m.

2 stops26h 30m

Houston George Bush Intcntl

Tue 14/7

11:32 a.m.-5:35 a.m.

2 stops17h 03m

C$ 979

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 34 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$ 228). Flying from Ottawa to Houston in June is currently the most expensive (average of C$ 785). 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 12 May 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
9,701 reviews
Check prices

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

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
9,701 reviews
United Airlines
7.4
Good
9,701 reviews
Check prices

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

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
11,020 reviews
United Airlines
7.4
Good
9,701 reviews
Check prices

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

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 6h 03m. WestJet provides one of the quickest options available for as low as C$ 872. Ottawa and Houston are separated by a distance of 2416 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$ 483, 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$ 228). Flying from Ottawa to Houston in June is currently the most expensive (average of C$ 785). 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 12 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 483AverageC$ 881FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 568AverageC$ 845FlexibilityNo 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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