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Cheap flights from Ottawa to St. Louis from C$ 362

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 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — STL
22 dic. — 29 dic.1
1 adult

Cheap flight deals from Ottawa to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to St. Louis (STL). 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 17 diciembre 2024.

Round-trip from

C$ 686

One-way from

C$ 362

Popular in

March

Cheapest in

September

Average price

C$ 850
30/1-6/2
  • 30/1-6/2
  • 6 total stops
  • 62h 16m total
  • Ottawa to St. Louis
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16/2
  • 16/2
  • 3 total stops
  • 29h 45m total
  • Ottawa to St. Louis
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High demand for flights, 10% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Ottawa to St. Louis

Best flights from Ottawa to St. Louis
Discover carefully curated flight deals from Ottawa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 diciembre 2024.

jue. 30/14:15 p.m.YOW - STL
3 stops44h 30mMultiple Airlines
jue. 6/24:28 p.m.STL - YOW
3 stops17h 46mMultiple Airlines
Deal found 15/12C$ 686
jue. 30/16:00 a.m.YOW - STL
2 stops9h 14mUnited Airlines
jue. 6/27:00 a.m.STL - YOW
1 stop5h 20mUnited Airlines
Deal found 15/12C$ 861

Find flights from Ottawa to St. Louis within your budget

Customize your flight search to find flights from Ottawa to St. Louis 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 17 diciembre 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

jue. 30/1

4:15 p.m.-11:45 a.m.

3 stops44h 30m

Lambert-St Louis

jue. 6/2

4:28 p.m.-11:14 a.m.

3 stops17h 46m

C$ 686

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

jue. 30/1

6:00 a.m.-2:14 p.m.

2 stops9h 14m

Lambert-St Louis

jue. 6/2

7:00 a.m.-1:20 p.m.

1 stop5h 20m

C$ 861

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

dom. 16/2

7:00 a.m.-11:45 a.m.

3 stops29h 45m

C$ 362

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

vie. 31/1

6:20 a.m.-2:14 p.m.

1 stop8h 54m

C$ 457

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

dom. 16/2

6:00 a.m.-3:40 p.m.

2 stops10h 40m

C$ 477

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/12

Best time to book a flight from Ottawa to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis 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.

Travel insights for flights from Ottawa to St. Louis

Get recent, data-driven insights about flights from Ottawa to St. Louis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ottawa to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Ottawa to St. Louis (average of C$ 365). Flying from Ottawa to St. Louis in September is currently the most expensive (average of C$ 491). 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated 17 diciembre 2024.
United Airlines
7.4
Good
9,070 reviews
Check prices

Entertainment

7.1

Food

6.7

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 10

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

United Airlines
7.4
Good
9,070 reviews
United Airlines
7.4
Good
9,070 reviews
Check prices

Entertainment

7.1

Food

6.7

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 10

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Air Canada
7.0
Good
8,371 reviews
United Airlines
7.4
Good
9,070 reviews
Check prices

Entertainment

7.1

Food

6.7

Comfort

7.3

Boarding

7.7

Overall

7.4

Crew

8.1

Reviews

1 / 10

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Ottawa to St. Louis round-trip?

    United Airlines, at C$ 861, was found to be the cheapest airline from Ottawa to St. Louis.. United Airlines is currently priced 13% below the average price you’ll pay for this route.

  • Can I find deals for flights from Ottawa to St. Louis that include hotel bookings?

    Yes. In addition to deals on Ottawa to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to St. Louis.

  • Can I find deals for business class flights from Ottawa to St. Louis?

    Yes. Cheapflights offers flight deals from Ottawa to St. Louis 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 St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to St. Louis (average of C$ 365). Flying from Ottawa to St. Louis in September is currently the most expensive (average of C$ 491). 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

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Top airline flying from Ottawa to St. Louis

Discover the top airline that operate flights from Ottawa to St. Louis. 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 17 diciembre 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 683AverageC$ 1,009FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ottawa to St. Louis?

When you search for this flight from Ottawa to St. Louis, 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 St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ottawa to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ottawa to St. Louis become cheaper?

Yes! Start tracking prices for Ottawa to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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