$173 Find Cheap Flights from Ottawa to Houston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Houston departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Houston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Houston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Houston, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ottawa to Houston (YOW-HOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Houston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ottawa to Houston

Tue, Nov 25 - Thu, Nov 27
WestJet Logo
6:00 am - 5:29 pmYOW-IAH
12h 29m1 stop
WestJet Logo
1:35 pm - 12:40 amIAH-YOW
10h 05m1 stop
$255WestJet
Find Deal
Thu, Oct 23 - Fri, Oct 31
 Logo
4:25 pm - 7:04 amYOW-IAH
15h 39m1 stop
 Logo
1:35 pm - 12:40 amIAH-YOW
10h 05m1 stop
Thu, Oct 23 - Fri, Oct 31
 Logo
7:00 am - 11:23 pmYOW-IAH
17h 23m2 stops
 Logo
1:35 pm - 12:40 amIAH-YOW
10h 05m1 stop
Sun, Oct 12 - Sun, Oct 19
 Logo
3:50 pm - 12:28 amYOW-IAH
9h 38m1 stop
 Logo
6:00 am - 5:20 pmIAH-YOW
10h 20m1 stop
Sun, Oct 5 - Sun, Oct 12
 Logo
3:50 pm - 8:55 amYOW-IAH
18h 05m1 stop
 Logo
3:00 pm - 1:03 pmIAH-YOW
21h 03m2 stops
Tue, Feb 24 - Wed, Feb 25
United Airlines Logo
9:45 am - 8:40 pmYOW-IAH
11h 55m2 stops
United Airlines Logo
6:05 pm - 1:34 pmIAH-YOW
18h 29m2 stops
$421United Airlines
Find Deal
Tue, Feb 24 - Wed, Feb 25
United Airlines Logo
9:45 am - 8:40 pmYOW-IAH
11h 55m2 stops
United Airlines Logo
9:49 am - 9:14 pmIAH-YOW
10h 25m1 stop
$552United Airlines
Find Deal
Tue, Nov 25 - Thu, Nov 27
Delta Logo
5:40 am - 3:05 pmYOW-IAH
10h 25m2 stops
Delta Logo
11:00 am - 12:42 amIAH-YOW
12h 42m2 stops
$981Delta
Find Deal
Wed, Oct 1 - Sun, Oct 5
Air Canada Logo
5:15 am - 11:04 amYOW-IAH
6h 49m1 stop
Air Canada Logo
6:16 pm - 7:34 amIAH-YOW
12h 18m1 stop
$1,106Air Canada
Find Deal
Thu, Oct 23 - Fri, Oct 31
Delta Logo
5:55 am - 5:48 pmYOW-HOU
12h 53m2 stops
Delta Logo
2:22 pm - 12:42 amHOU-YOW
9h 20m2 stops
$1,265Delta
Find Deal

Everything you should know

Top airlines
WestJet
Cheapest • from $255 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
Cheapest round-trip
$255
Overall average: $699
WestJet
Tue 11/25Thu 11/27
YOW - IAH • 1 stop
Cheapest one-way
$173
Typical prices: $419-678
Multiple Airlines
Wed 10/29
YOW - IAH • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Houston!
Booking Insights

KAYAK's insights & trends for Ottawa to Houston flights

Get data-powered insights and trends into flights from Ottawa to Houston to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ottawa to Houston?

The average price of all round-trip flights from Ottawa to Houston clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ottawa to Houston, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Houston, Sunday is the cheapest day to fly and Wednesday is the most expensive.

What is the cheapest month to fly from Ottawa to Houston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Houston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ottawa to Houston is May, where tickets cost $564 (return) on average. On the other hand, the most expensive months are November and August, where the average cost of round-trip tickets is $859 and $847 respectively.

How far in advance should I book a flight from Ottawa to Houston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to Houston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ottawa to Houston, you should book around 4 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Cheapest flight$173
Flight from Ottawa to Houston George Bush Airport

When to book flights from Ottawa to Houston

Are your dates flexible? Find out the best times to travel from Ottawa to Houston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ottawa to Houston

  • What is the cheapest flight from Ottawa to Houston?

    In the last 3 days, the lowest price for a flight from Ottawa to Houston was $173 for a one-way ticket and $255 for a round-trip.

  • Do I need a passport to fly between Ottawa and Houston?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Ottawa and on arrival in Houston.

  • Which airports will I be using when flying from Ottawa to Houston?

    On your way to Houston, you’ll fly out from Ottawa. You’ll be landing in one of Houston’s 2 airports: Houston Hobby or Houston George Bush Intcntl.

  • Which aircraft models fly most regularly from Ottawa to Houston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ottawa to Houston?

    Star Alliance is the only airline alliance operating flights between Ottawa and Houston.

  • How does KAYAK find such low prices on flights from Ottawa to Houston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ottawa to Houston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ottawa to Houston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston from Ottawa is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ottawa to Houston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston with an airline and back to Ottawa with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ottawa to Houston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ottawa to Houston

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Houston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ottawa to Houston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8929 reviews
6.6Food
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
Airline reviews

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

6.0 GoodKaren Andrea, Sep 2025SAT - IAH
Read more United Airlines reviews

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Flight was on time. Boarding was smooth. Flight attendants were friendly and efficient. Entertainment system was broken for all passengers on the left side of the aisle. I would prefer if meals were not served on red eye flights. No one should need to dine at that time and it is disturbing for those passengers trying to sleep.

Due to the strike by AC flight attendants, my flight was cancelled. Very disappointing! A refund is being processed. This was not a Kayak issue. I will be sure to come back to Kayak in the future.

Staff was very courteous and kept things organized. We will definitely use Air Canada for further travel

Great flights. 90 minute departure delay for maintenance issues, not a great start but, afer that very good. Didn't pay extra for seats and lucked into a window and an aisle seat. Price was excellent at the super low economy level.

Just a little improvement on food but everything is excellent

The ground staff was so rude in Toronto airport ...very rude and did not answer simple questions, and made me look like a fool. Very rude ground staff.

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

They lost my checked in luggage, why do I pay for my cargo not arriving at the same destination as me?

Poor planning meant the plane was delayed an hour, then a thunder storm started and the ground staff couldn't work. Eventual arrival in Santiago was 3 hours late resulting in missed connections and the need to buy new tickets.

The take off was delayed as we were told that the baggages had to be rearranged to balance the weight. I only took a carry-on and a personal item, but the overhead bin was extremely small, even a normal size carryon can’t fit it, so they had to check it in for free. The seat was really tight and no entertainment at all.

The pork noodles were disgusting. The tuna sandwich had hardly any tuna and the bread was stale. A salad would have been better. An apple or a muffin.

Everything you need to know for your flight from Ottawa to Houston

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.