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Cheap flights from Ottawa to Houston from C$ 257

YOW — HOU
19 Oct — 26 Oct1
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

Tue 8/127:05 a.m. -
1 stop10h 01m
Wed 9/125:01 p.m. -
1 stop23h 19m
Deal found 18/9C$ 502
Tue 13/108:15 p.m. -
2 stops16h 07m
Tue 20/102:50 p.m. -
1 stop13h 45m
Deal found 15/9C$ 507
Tue 8/127:05 a.m. -
1 stop10h 01m
Sat 12/125:01 p.m. -
1 stop29h 31m
Deal found 18/9C$ 509
Mon 26/107:05 a.m. -
2 stops25h 18m
Fri 30/108:18 a.m. -
1 stop8h 02m
Deal found 16/9C$ 511
Thu 1/1012:25 p.m. -
2 stops11h 15m
Wed 21/102:50 p.m. -
1 stop13h 45m
Deal found 16/9C$ 525
Mon 26/107:05 a.m. -
1 stop8h 43m
Mon 2/118:18 a.m. -
2 stops32h 40m
Deal found 15/9C$ 535
Thu 5/116:10 a.m. -
1 stop17h 05m
Mon 9/118:18 a.m. -
2 stops32h 40m
Deal found 15/9C$ 556
Mon 7/126:10 a.m. -
1 stop17h 05m
Sat 12/128:00 a.m. -
1 stop15h 01m
Deal found 18/9C$ 558
Tue 1/127:05 a.m. -
1 stop9h 55m
Sat 5/127:20 p.m. -
2 stops27h 41m
Deal found 18/9C$ 563
Sun 25/103:25 p.m. -
2 stops40h 58m
Fri 30/108:18 a.m. -
1 stop8h 02m
Deal found 18/9C$ 565
Tue 6/106:55 a.m. -
2 stops10h 38m
Wed 14/103:09 p.m. -
2 stops8h 11m
Deal found 14/9C$ 945
Thu 29/105:30 a.m. -
2 stops18h 33m
Thu 5/116:09 a.m. -
2 stops17h 35m
Deal found 14/9C$ 982

Find flight deals from Ottawa to Houston

Round-trip from

C$ 502

One-way from

C$ 257

Popular in

September

Cheapest in

October

Average price

C$ 1,223
8/12-9/12
  • 8/12-9/12
  • 2 total stops
  • 33h 20m total
  • Ottawa to Houston
Search Deals
2/11-31/12
  • 2/11-31/12
  • 3 total stops
  • 42h 01m total
  • Ottawa to Houston
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Mon 2/11

7:05 a.m.-2:44 p.m.

1 stop32h 39m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 271

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Wed 21/10

8:15 p.m.-11:22 a.m.

2 stops16h 07m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 285

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sun 31/1

6:10 a.m.-8:53 a.m.

2 stops27h 43m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 383

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Thu 15/10

10:40 a.m.-7:19 a.m.

3 stops21h 39m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 432

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sat 17/10

10:00 a.m.-9:36 a.m.

3 stops24h 36m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 437

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sun 31/1

4:36 p.m.-8:30 a.m.

1 stop16h 54m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 458

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Fri 2/10

2:35 p.m.-7:52 p.m.

1 stop6h 17m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 472

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Fri 27/11

6:15 a.m.-5:25 p.m.

1 stop12h 10m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 474
Quickest round-trip

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Thu 15/10

2:50 p.m.-7:52 p.m.

1 stop6h 02m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 474

OttawaHouston

YOW Ottawa - IAH Houston George Bush Intcntl

YOWIAH

Ottawa

Sat 17/10

5:20 p.m.-12:37 a.m.

1 stop8h 17m

Houston George Bush Intcntl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 477

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/9

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

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, November is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 820). Flying from Ottawa to Houston in July is currently the most expensive (average of C$ 998). 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

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
10,229 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.
United Airlines
7.4
Good
10,229 reviews
United Airlines
7.4
Good
10,229 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.
Air Canada
7.1
Good
11,654 reviews
United Airlines
7.4
Good
10,229 reviews
Check prices

Boarding

7.7

Food

6.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Asha,Sep 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Related info for your journey

  • 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 38m. United Airlines provides one of the quickest options available for as low as C$ 945. 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$ 494, 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 47% 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, November is the cheapest month in which you can book a flight from Ottawa to Houston (average of C$ 820). Flying from Ottawa to Houston in July is currently the most expensive (average of C$ 998). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ottawa to Houston

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Top 2 airlines flying from Ottawa to Houston

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 494AverageC$ 876FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 581AverageC$ 927FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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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