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Flights from Houston to Ottawa

Search cheap flights from Houston to Ottawa in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$115, and round-trip tickets start at US$572.

      • IAH 14:42
        8h 12m
        1 stop
        YOW 23:54
        Houston - Ottawa | Sun, Dec 21 | United Airlines
        YOW 19:27
        14h 23m
        1 stop
        IAH 08:50
        Ottawa - Houston | Sat, Dec 27 | United Airlines
        US$572 US$1,225
        53% OFF
        53% OFF
        US$1,225 US$572
      • IAH 07:10
        10h 28m
        1 stop
        YOW 18:38
        Houston - Ottawa | Sun, Feb 8 | Air Canada
        YOW 14:50
        7h 49m
        1 stop
        IAH 21:39
        Ottawa - Houston | Sat, Feb 14 | Air Canada
        US$638 US$1,225
        48% OFF
        48% OFF
        US$1,225 US$638
      • IAH 07:10
        10h 28m
        1 stop
        YOW 18:38
        Houston - Ottawa | Sun, Dec 21 | Air Canada
        YOW 19:27
        14h 23m
        1 stop
        IAH 08:50
        Ottawa - Houston | Sat, Dec 27 | United Airlines
        US$722 US$1,225
        41% OFF
        41% OFF
        US$1,225 US$722
      • IAH 12:10
        6h 5m
        1 stop
        YOW 19:15
        Houston - Ottawa | Thu, Dec 11 | Air Canada
        YOW 06:15
        12h 28m
        1 stop
        IAH 17:43
        Ottawa - Houston | Wed, Dec 17 | Air Canada
        US$955
        22% OFF
        US$1,225 US$955
      • IAH 09:34
        11h 22m
        1 stop
        YOW 21:56
        Houston - Ottawa | Thu, Dec 11 | United Airlines
        YOW 06:15
        15h 35m
        1 stop
        IAH 20:50
        Ottawa - Houston | Wed, Dec 17 | Air Canada
        US$1,103
        10% OFF
        US$1,225 US$1,103
      • HOU 13:00
        17h 25m
        1 stop
        YOW Invalid Date
        Houston - Ottawa | Sat, Dec 13 | Normal Airline
        YOW 15:00
        6h
        Nonstop
        HOU 16:00
        Ottawa - Houston | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights
      • IAH 10:41
        29h 44m
        1 stop
        YOW 17:25
        Houston - Ottawa | Mon, Dec 15 | Spirit Airlines
        US$115 US$397
        71% OFF
        71% OFF
        US$397 US$115
      • IAH 07:30
        15h 55m
        1 stop
        YOW 00:25
        Houston - Ottawa | Sat, Dec 13 | Frontier Airlines
        US$126 US$397
        68% OFF
        68% OFF
        US$397 US$126
      • IAH 20:23
        26h 35m
        1 stop
        YOW 23:58
        Houston - Ottawa | Sat, Dec 13 | Spirit Airlines
        US$164 US$397
        59% OFF
        59% OFF
        US$397 US$164
      • IAH 21:34
        25h 24m
        1 stop
        YOW 23:58
        Houston - Ottawa | Thu, Dec 18 | Frontier Airlines
        US$237
        40% OFF
        US$397 US$237
      • IAH 08:10
        15h 15m
        1 stop
        YOW 00:25
        Houston - Ottawa | Sat, Dec 13 | United Airlines
        US$290
        27% OFF
        US$397 US$290
      • IAH 05:46
        17h 12m
        1 stop
        YOW 23:58
        Houston - Ottawa | Thu, Dec 18 | Spirit Airlines
        US$319
        20% OFF
        US$397 US$319
      • IAH 11:55
        6h 23m
        1 stop
        YOW 19:18
        Houston - Ottawa | Mon, Dec 15 | Air Canada
        US$319
        20% OFF
        US$397 US$319
      • IAH 17:00
        16h 26m
        1 stop
        YOW 10:26
        Houston - Ottawa | Mon, Dec 15 | United Airlines
        US$319
        20% OFF
        US$397 US$319
      • IAH 08:49
        14h 9m
        1 stop
        YOW 23:58
        Houston - Ottawa | Fri, Dec 12 | Spirit Airlines
        US$341
        14% OFF
        US$397 US$341
      • IAH 20:07
        26h 51m
        1 stop
        YOW 23:58
        Houston - Ottawa | Fri, Dec 12 | Frontier Airlines
        US$358
        10% OFF
        US$397 US$358
      • HOU 13:00
        17h 25m
        1 stop
        YOW Invalid Date
        Houston - Ottawa | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

Displayed flight fares from Houston to Ottawa are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Houston to Ottawa Flight Details

The distance between Houston and Ottawa is about 2,443.97 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is November.

Cheapest one-way flight priceUS$115
Cheapest return ticket priceUS$572
Cheapest monthNovember
Peak season for travelJuly
Flight distance2,443.97 km

When is the cheapest time to book flights from Houston to Ottawa?

The cheapest time to fly from Houston to Ottawa: Dec 14 to Dec 21 — one-way prices start at US$114.

Cheapest flights
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  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Houston to Ottawa (HOU-YOW)?

    Based on Trip.com data, Spirit Airlines offers one-way fares as low as US$115 on Cheapest nonstop routes (e.g. IAH to YOW on Mon, Dec 15), while United Airlines offers Cheapest nonstop round-trips from US$572 departing on Sun, Dec 21 and returning on Sat, Dec 27.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Houston to Ottawa is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Houston to Ottawa, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Dec 15, with one-way flights priced at just US$115.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Spirit Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Ottawa travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Houston to Ottawa is November, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Houston to Ottawa on December 16, 2025 with United Airlines, with prices starting at US$328.
  • The time difference between Ottawa and Houston is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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