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Cheap flights from Ottawa to St. Louis from C$ 468

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to St. Louis departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ottawa to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Ottawa to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Ottawa to St. Louis.

Cheap last-minute flights

Planning a quick getaway from Ottawa to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Ottawa to St. Louis

Find recent round-trip train or bus tickets from Ottawa to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
4:10 p.m. - 11:40 p.m.YOW-STL
8h 30m1 stop
8:12 a.m. - 8:17 p.m.STL-YOW
11h 05m1 stop
C$ 634
Find Deal
Mon, 6 Jan - Sun, 12 Jan
10:30 a.m. - 9:45 p.m.YOW-STL
12h 15m2 stops
6:30 a.m. - 10:01 p.m.STL-YOW
14h 31m2 stops
C$ 857United Airlines
Find Deal
Mon, 6 Jan - Sun, 12 Jan
6:00 a.m. - 3:37 p.m.YOW-STL
10h 37m2 stops
C$ 468United Airlines
Find Deal
Sat, 4 Jan
10:00 a.m. - 11:45 a.m.YOW-STL
26h 45m3 stops
C$ 570
Find Deal
Sat, 4 Jan

See travel insights to St. Louis from

How to get the cheapest flight ticket from Ottawa to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Ottawa to St. Louis?

December. The cheapest time of year to fly to St. Louis from Ottawa is December. The most expensive is January.

What is the cheapest day to depart Ottawa for St. Louis?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Friday

When is the cheapest time to fly from Ottawa to St. Louis?

Ottawa to St. Louis flights are currently only available in the morning

What is the cheapest Ottawa to St. Louis flight route?

Ottawa - Lambert-St Louis. Fly from Ottawa to Lambert-St Louis for the best Ottawa - St. Louis flight prices

When to book flights from Ottawa to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ottawa to St. Louis (YOW to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to St. Louis

Best price found

C$ 468

Fastest flight time

8h 30m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Ottawa in the past 72 hours is C$ 468. The best round-trip flight deal from Ottawa to St. Louis found on momondo in the last 72 hours is C$ 634.
The fastest flight from Ottawa to St. Louis takes 8h 30m
There are no direct flights from Ottawa to St. Louis. Popular non-direct route for this connection is Ottawa Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Ottawa to Lambert-St Louis by plane?

    A flight from Ottawa to Lambert-St Louis will travel around 1411.6 km. 8h 30m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ottawa Airport to Lambert-St Louis Airport?

    Prices for flights from Ottawa Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ottawa Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Ottawa Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ottawa to St. Louis?


Best airlines flying from Ottawa to St. Louis

Compare and see reviews for airlines that fly from Ottawa to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 671Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ottawa to St. Louis for you.

Can I find flights from Ottawa to St. Louis with flexible booking policies on momondo?

All flight searches from Ottawa to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ottawa to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ottawa to St. Louis.

I’m not ready to book a flight from Ottawa to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Ottawa. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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