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Flights from Ottawa to St Louis
There are no direct flights from Ottawa to St Louis. The fastest way is one stop via Montreal or Toronto, about 4h 25m door to door (47 connections a week on current schedules).
No direct flights · 6 connection options From 4h 25m
Ottawa to St Louis at a glance
Fastest journey4h 25mVia Montreal, on current schedules
Nonstop flightsNoneConnect via Montreal or Toronto
Best ways to fly from Ottawa to St Louis
Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.
1Search
YOW Montreal (YUL) STL
Leg 1: Air Canada, Air Transat, PAL Airlines · Leg 2: Air Canada, Air Canada Jazz
Sat15:15 YOW15:47 YUL1h 28m connection17:15 YUL18:40 STLAir Canada Jazz
2Search
YOW Toronto (YYZ) STL
Leg 1: Air Canada, Porter Airlines, WestJet · Leg 2: Air Canada, Air Canada Jazz
Sat10:00 YOW10:56 YYZ2h 04m connection13:00 YYZ13:51 STLAir Canada + Air Canada Jazz
3Search
YOW Chicago (ORD) STL
Leg 1: United Airlines, Republic Airlines · Leg 2: American Airlines, United Airlines, GoJet Airlines
Sun06:30 YOW07:39 ORD2h 06m connection09:45 ORD10:44 STLUnited Airlines + American Airlines
4Search
YOW New York (EWR) STL
Leg 1: Porter Airlines, Republic Airlines · Leg 2: United Airlines, Republic Airlines
Mon15:15 YOW16:30 EWR5h 30m connection22:00 EWR23:21 STLRepublic Airlines + United Airlines
5Search
YOW Washington (IAD) STL
Leg 1: Republic Airlines, GoJet Airlines · Leg 2: GoJet Airlines
Sat06:00 YOW07:25 IAD10h 35m connection18:00 IAD18:57 STLRepublic Airlines + GoJet Airlines
6Search
YOW Boston (BOS) STL
Leg 1: Porter Airlines · Leg 2: Southwest Airlines, Republic Airlines, Envoy Air
Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.
Good to know
- Distance
- 1,412 km877 miles
- Journey time
- 4h 25mon current schedules
- Time difference
- -1hSt Louis vs Ottawa
- Currency in St Louis
- USD
- Airports
- YOW → STL
Flights from Ottawa to St Louis: questions answered
Are there direct flights from Ottawa to St Louis?
No. There is no nonstop service, so you will connect, most easily in Montreal, Toronto and Chicago. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from Ottawa to St Louis?
With one connection the journey usually takes around 4h 25m, depending on the layover. The straight-line distance is 1,412 km.
Where do you change planes between Ottawa and St Louis?
The best connecting points are Montreal (YUL), Toronto (YYZ), Chicago (ORD) and New York (EWR). Air Canada flies both legs via Montreal, so you can book it as one ticket.
Which airports serve Ottawa and St Louis?
Ottawa: Ottawa Macdonald-Cartier International Airport (YOW). St Louis: St. Louis Lambert International Airport (STL).
What is the time difference between Ottawa and St Louis?
St Louis is 1 hour behind Ottawa.
