Cheap flights from Ottawa to Lambert-St Louis Intl

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

YOW - STL
Price
C$ 261 - C$ 628
STL
Temperature
7 - 32 °C
STL
Rainfall
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$ 261

Average for round-trip flights in April 2021

Round-trip from

C$ 261

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$ 571.

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$ 537 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.

Ottawa to Lambert-St Louis Intl 2021 flight deals

27 Jul - 28 Jul
C$ 365pp
YOW
Ottawa
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
YOW
Ottawa
27 Jul - 28 Jul
C$ 367pp
YOW
Ottawa
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
YOW
Ottawa
27 Jul - 28 Jul
C$ 428pp
YOW
Ottawa
WestJet
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
WestJet
   
2 STOPS
YOW
Ottawa

Related info for your journey

Flight FAQs

From Ottawa to Lambert-St Louis Intl

Can I find flights from Ottawa to Lambert-St Louis Intl for under C$ 377 on Cheapflights?

Yes, there are multiple flights from Ottawa to Lambert-St Louis Intl for under C$ 377. The cheapest flight booked recently is on United Airlines for just C$ 365, but on average you can expect to pay C$ 399.

What safety measures are being taken by airlines flying from Ottawa to Lambert-St Louis to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Some of the new policies that have been implemented to accommodate travellers flying from Ottawa to Lambert-St Louis are improved sanitation, HEPA filters, mask requirements, socially-distanced seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

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.

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 less than St Louis. You can assume this to be the case over the next 16 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$ 367, United Airlines can have you in Lambert-St Louis Intl from Ottawa in 6h 29m. 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$ 366. Another option worth looking into is WestJet, starting at C$ 429 round trip. United Airlines is 1% cheaper than the average price of flights available within the next 90 days to this destination.

Alternative routes for Ottawa to Lambert-St Louis Intl

Destination information for Lambert-St Louis Intl

Today's exchange rate
C$ 1 = $0.80
Average temperature for April in Lambert-St Louis Intl
21.0 °C
Avg rainfall for April in Lambert-St Louis Intl
104.0 mm

Airports servicing Ottawa

Airports servicing St. Louis

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

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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