HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Houston

$202+ Cheap flights from Ottawa (YOW) to Houston

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — HOU
Apr 24 — May 11
Fri 4/24
Fri 5/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ottawa to Houston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ottawa to Houston

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 March 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
YOW
-
IAH
1 stop16h 47m
Multiple Airlines
Tue 4/2812:16 pm
IAH
-
YOW
1 stop28h 09m
Multiple Airlines
Deal found 3/22$390
This Kiwi.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:15 pm
YOW
-
IAH
1 stop20h 12m
Multiple Airlines
Tue 4/2812:16 pm
IAH
-
YOW
1 stop28h 09m
Multiple Airlines
Deal found 3/20$395
This Kiwi.com deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:20 pm
YOW
-
IAH
1 stop17h 18m
Multiple Airlines
Sat 4/182:01 pm
IAH
-
YOW
1 stop8h 57m
Multiple Airlines
Deal found 3/21$406
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:15 pm
YOW
-
IAH
1 stop30h 40m
Multiple Airlines
Wed 5/63:31 pm
IAH
-
YOW
1 stop19h 44m
Multiple Airlines
Deal found 3/23$418
This Kiwi.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2510:10 am
YOW
-
IAH
1 stop23h 40m
Multiple Airlines
Tue 6/23:31 pm
IAH
-
YOW
1 stop19h 54m
Multiple Airlines
Deal found 3/20$426
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:15 pm
YOW
-
IAH
1 stop20h 12m
Multiple Airlines
Wed 5/63:31 pm
IAH
-
YOW
1 stop19h 44m
Multiple Airlines
Deal found 3/22$427
This Kiwi.com deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
YOW
-
IAH
1 stop12h 23m
Multiple Airlines
Tue 4/78:24 am
IAH
-
YOW
2 stops32h 01m
Multiple Airlines
Deal found 3/21$428
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/57:00 am
YOW
-
IAH
1 stop11h 53m
Multiple Airlines
Sun 4/1211:32 am
IAH
-
YOW
1 stop11h 53m
Multiple Airlines
Deal found 3/22$435
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/274:20 pm
YOW
-
IAH
1 stop29h 00m
Multiple Airlines
Fri 4/37:05 am
IAH
-
YOW
1 stop9h 20m
Multiple Airlines
Deal found 3/22$437
This FlightHub deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:55 am
YOW
-
HOU
2 stops10h 33m
WestJet
Fri 5/81:06 pm
HOU
-
YOW
2 stops10h 14m
WestJet
Deal found 3/20$624
This FlightHub deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:55 am
YOW
-
HOU
2 stops10h 33m
WestJet
Fri 5/810:27 am
HOU
-
YOW
2 stops12h 53m
WestJet
Deal found 3/23$671
This lastminute.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:55 am
YOW
-
HOU
2 stops10h 14m
WestJet
Sat 5/166:00 am
HOU
-
YOW
2 stops10h 35m
WestJet
Deal found 3/24$726

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 March 25, 2026.

Round-trip from

$390
(Kiwi.com)

One-way from

$202
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$685
From Ottawa to Houston
Search Deals
One-way flight from Ottawa to Houston
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 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 2,558,603 searches. Data last updated March 25, 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 4/4

7:00 am-6:23 pm

1 stop12h 23m

Houston George Bush Intcntl

Tue 4/7

7:05 am-5:25 pm

1 stop9h 20m

$466

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Mon 7/6

7:30 pm-8:39 am

1 stop14h 09m

Houston George Bush Intcntl

Tue 7/7

11:55 am-11:54 pm

2 stops10h 59m

$603

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Wed 4/15

5:50 pm-8:21 am

2 stops15h 31m

Houston George Bush Intcntl

Tue 4/21

8:30 am-11:54 pm

2 stops14h 24m

$606

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 5/1

6:25 am-11:52 am

1 stop6h 27m

Houston George Bush Intcntl

Tue 5/5

2:49 pm-10:05 pm

1 stop6h 16m

$608
Quickest round-trip

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Sat 8/22

10:37 am-3:38 pm

1 stop6h 01m

Houston George Bush Intcntl

Mon 8/31

2:49 pm-9:56 pm

1 stop6h 07m

$609

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Thu 7/9

6:25 am-1:30 pm

1 stop8h 05m

Houston George Bush Intcntl

Mon 7/13

2:31 pm-11:54 pm

1 stop8h 23m

$609

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Sat 8/22

6:00 am-3:38 pm

2 stops10h 38m

Houston George Bush Intcntl

Sun 8/30

5:04 am-1:59 pm

1 stop7h 55m

$609

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 8/21

6:00 pm-11:30 pm

1 stop6h 30m

Houston George Bush Intcntl

Mon 8/31

6:15 am-1:59 pm

1 stop6h 44m

$609

OttawaHouston

YOW - IAH

YOWIAH

Ottawa

Fri 7/10

6:00 am-10:59 am

1 stop5h 59m

Houston George Bush Intcntl

Sun 7/12

5:04 am-1:59 pm

1 stop7h 55m

$609

OttawaHouston

YOW - HOU

YOWHOU

Ottawa

Tue 5/5

6:55 am-4:28 pm

2 stops10h 33m

Houston Hobby

Fri 5/8

1:06 pm-12:20 am

2 stops10h 14m

$624

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 34 resultsSorted by cheapest first
1
2
3
4

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 $271). Flying from Ottawa to Houston in March is currently the most expensive (average of $477). 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 March 25, 2026.
See what other customers who have flown with United Airlines and Air Canada from Ottawa to Houston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,477 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

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
9,477 reviews
United Airlines
7.4
Good
9,477 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

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
10,838 reviews
United Airlines
7.4
Good
9,477 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

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 6.6 mi from Ottawa’s city center.

  • How long is the flight from Ottawa to Houston?

    A quick flight from Ottawa to Houston can take about 10h 33m. United Airlines provides one of the quickest options available for as low as $624. Airlines will cover a distance of 1517 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $404, Air Canada will fly you from Ottawa to Houston and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $602. Users have found that Air Canada is 35% cheaper than the other options available 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 $271). Flying from Ottawa to Houston in March is currently the most expensive (average of $477). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 2,558,603 searches. Data last updated March 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$404Average$635FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$602Average$680FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.