Cheap flights from Ottawa to Lambert-St Louis Intl

Round-trip
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Ottawa (YOW)
St. Louis (STL)
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How to find the cheapest flight from
Ottawa (YOW) to Lambert-St Louis Intl (STL)

All the information you need to plan the best YOW to STL flight in 2021: compare Ottawa to Lambert-St Louis Intl flight prices with the expected peak season, weather and rainfall in Lambert-St Louis Intl.
YOW - STL
Price
C$ 262 - C$ 629
STL
Temperature
7 - 32 °C
STL
Precipitation
57 - 130 mm

Popular in

October

High demand for flights, 41% potential price rise

Cheapest in

April

Best time to find cheap flights, 30% potential price drop

Average price

C$ 309

Average for round-trip flights in July 2021

Round-trip from

C$ 262

From Ottawa to Lambert-St Louis Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Ottawa to Lambert-St Louis Intl?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Lambert-St Louis Intl. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Ottawa to Lambert-St Louis Intl?

Find a great deal and save up to 26% by booking at least 39 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ottawa to Lambert-St Louis Intl within the next two weeks, with the cheapest ticket starting at C$ 572.

What is the cheapest month to fly from Ottawa to Lambert-St Louis Intl?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to Lambert-St Louis Intl. Flights to Lambert-St Louis Intl from Ottawa in February are about C$ 538 on average during February, but can be found for as low as C$ 216.

When is the cheapest time to fly from Ottawa to Lambert-St Louis Intl (YOW - STL)?

Unlike at noon, when flights are generally more expensive, you can save up to 27% on flights from Ottawa to Lambert-St Louis Intl by exploring options for tickets in the afternoon.

Cheap flights from Ottawa to Lambert-St Louis Intl in July, August 2021

The best prices found for YOW to STL flights for July, August
31 Aug - 20 Sep
C$ 415pp
YOW
Ottawa
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa
5 Aug - 18 Aug
C$ 642pp
YOW
Ottawa
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa
10 Aug - 18 Aug
C$ 644pp
YOW
Ottawa
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa

Ottawa to Lambert-St Louis Intl 2021 flight deals

Cheap flights to Lambert-St Louis Intl from Ottawa found for this year
13 Nov - 17 Nov
C$ 394pp
YOW
Ottawa
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
YOW
Ottawa
13 Nov - 17 Nov
C$ 395pp
YOW
Ottawa
Air Canada
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
 
1 STOP
YOW
Ottawa
31 Aug - 20 Sep
C$ 415pp
YOW
Ottawa
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa

Last minute flights from Ottawa to Lambert-St Louis Intl

Late deals on round-trip flights to Lambert-St Louis Intl from Ottawa, departing today and this week
5 Aug - 18 Aug
C$ 642pp
YOW
Ottawa
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa
4 Aug - 24 Aug
C$ 749pp
YOW
Ottawa
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa
4 Aug - 18 Aug
C$ 777pp
YOW
Ottawa
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YOW
Ottawa

One-way flights to Lambert-St Louis Intl from Ottawa

The cheapest one-way flights from Ottawa to Lambert-St Louis Intl
5:00 p.m. - 10:06 a.m.
Air Canada
2 stops
42h 06m
YOW - STL
Air Canada
C$ 501
1:00 p.m. - 5:31 p.m.
WestJet
2 stops
29h 31m
YOW - STL
WestJet
C$ 579
2:00 a.m. - 12:09 p.m.
Multiple Airlines
3 stops
11h 09m
YOW - STL
Multiple Airlines
C$ 2,167
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Ottawa</span> to <span class="emphasized">Lambert-St Louis Intl</span> flights.

Flight FAQs

From Ottawa to Lambert-St Louis Intl

Can I find flights from Ottawa to Lambert-St Louis Intl for under C$ 503 on Cheapflights?

Yes, there are multiple flights from Ottawa to Lambert-St Louis Intl for under C$ 503. The cheapest flight booked recently is on United Airlines for just C$ 394, but on average you can expect to pay C$ 713.

Which airlines flying from Ottawa to Lambert-St Louis have flexible cancellations due to COVID-19?

Some of our airline partners flying from Ottawa to Lambert-St Louis have new flexible policies in place due to COVID-19. WestJet, Air Canada, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like WestJet with this kind of flexibility.

Are there direct flights from Ottawa to Lambert-St Louis Intl for under C$ 377 on Cheapflights?

There are no direct flights from Ottawa to Lambert-St Louis Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Ottawa to Lambert-St Louis Intl for under C$ 754?

There are currently 20+ open flights from Ottawa to Lambert-St Louis Intl within the next 7 days for less than C$ 754.

Does it rain more in Ottawa or St Louis?

When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Ottawa is roughly similar to St Louis. You can assume this to be the case over the next 18 days.

Is Ottawa weather warmer or cooler than St Louis?

With an average temperature of 32 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in St Louis are hotter than in Ottawa.

How long is the flight from Ottawa to Lambert-St Louis Intl?

For as low as C$ 394, United Airlines can have you in Lambert-St Louis Intl from Ottawa in 5h 34m. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to flying from Ottawa to Lambert-St Louis Intl round-trip?

Flying on United Airlines is currently your cheapest option to Lambert-St Louis Intl, with prices starting at C$ 394. Additional round-trip tickets that might be worth considering are offered by Air Canada and WestJet, with the lowest prices starting at C$ 395 and C$ 475, respectively.

What are the cheapest airlines to fly from Ottawa to Lambert-St Louis Intl one-way?

To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at C$ 250. United Airlines flights start at C$ 536 while deals on WestJet start at C$ 578 one-way.

Alternative routes for Ottawa to Lambert-St Louis Intl

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Lambert-St Louis Intl

Things to know before you go - useful duration and weather info for your trip from Ottawa to Lambert-St Louis Intl.
Today's exchange rate
C$ 1 = $0.80
Average temperature for July in Lambert-St Louis Intl
32.0 °C
Avg rainfall for July in Lambert-St Louis Intl
101.0 mm

Airports servicing Ottawa

Airports servicing St. Louis

Top 5 airlines flying from Ottawa to Lambert-St Louis Intl

The chart below displays the airlines Cheapflights users travelling from Ottawa to Lambert-St Louis Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
WestJet
C$ 156 C$ 311 No cancel fee 60%
Search WestJet flights
Delta
C$ 191 C$ 361 No cancel fee N/A
Search Delta flights
American Airlines
C$ 235 C$ 363 No cancel fee 71%
Search American Airlines flights
Air Canada
C$ 284 C$ 399 No cancel fee 67%
Search Air Canada flights
United Airlines
C$ 263 C$ 433 No cancel fee 69%
Search United Airlines flights
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