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Latest Flight Deals from Ottawa to St. Louis
Book one-way or return flights from Ottawa to St. Louis from as little as NZD 344. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- YOW16:1515h 58m1 stopSTL07:13Mon, May 6|Ottawa - St. Louis|Porter AirlinesNZD 344NZD 74054% OFF54% OFFNZD 740NZD 344
- YOW16:1515h 53m1 stopSTL07:08Mon, May 20|Ottawa - St. Louis|Porter AirlinesNZD 344NZD 74054% OFF54% OFFNZD 740NZD 344
- YOW07:558h 36m1 stopSTL15:31Tue, Apr 30|Ottawa - St. Louis|Porter AirlinesNZD 429NZD 74042% OFF42% OFFNZD 740NZD 429
- YOW17:245h 23m1 stopSTL21:47Tue, May 7|Ottawa - St. Louis|United AirlinesNZD 430NZD 430
- YOW07:558h 36m1 stopSTL15:31Mon, Apr 29|Ottawa - St. Louis|Porter AirlinesNZD 447NZD 447
- YOW06:0511h 9m1 stopSTL16:14Sat, May 25|Ottawa - St. Louis|United AirlinesNZD 474NZD 474
- YOW08:5010h 29m1 stopSTL18:19Wed, May 1|Ottawa - St. Louis|Porter AirlinesNZD 489NZD 489
- YOW13:389h 59m1 stopSTL22:37Wed, Jul 10|Ottawa - St. Louis|United AirlinesNZD 500NZD 500
- YOW08:5010h 18m1 stopSTL18:08Tue, May 7|Ottawa - St. Louis|Porter AirlinesNZD 509NZD 509
- YOW06:358h 48m1 stopSTL14:23Fri, May 10|Ottawa - St. Louis|United AirlinesNZD 516NZD 516
- YOW13:003h 5mDirectSTL14:00Sun, May 5|Ottawa - St. Louis|Porter AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Searching for the best last minute flight from Ottawa to St. Louis? Find one-way or return flights that are affordable and fit your itinerary.
Trip.com monitors the ticket fares of flights from Ottawa to St. Louis. Stay updated on price trends and snag the best deals for your upcoming trip.
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Airlines Flying from Ottawa to St. Louis
View airlines operating flights from Ottawa to St. Louis. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Porter Airlines
From NZD 306
United Airlines
From NZD 393
WestJet
From NZD 549
Air Canada
From NZD 550
ANA airlines
Find more flights and airlines
Alternative Routes from Ottawa to St. Louis
Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Ottawa to St. Louis.
- CheapestYOW07:5010h 6m2 transferSTL16:56Ottawa Macdonald-Cartier International Airport - St.Louis Lambert International AirportSat, May 25Porter AirlinesNZD 306
- YOW07:5010h 6m2 transferSTL16:56Ottawa Macdonald-Cartier International Airport - St.Louis Lambert International AirportSat, May 25Porter AirlinesNZD 306Find More Flights
How do I find the cheapest flights?
How to find a cheap flight from Ottawa to St. Louis
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ottawa to St. Louis. Book your flights at the right time and save more.
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
Compare Flight Prices
Compare prices on travel agency and airline websites.
Look Out for Deals
Check airline and travel agency websites for latest flight deals
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
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Flight Information from Ottawa to St. Louis
Cheapest nonstop flight price | NZD 343 |
---|---|
Off-season for travel | January |
Peak season for travel | June |
Flight distance | 1,409.41km |
Popular airline | Porter Airlines |
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