Ottawa — flights from St. Louis to Ottawa

Flight Deals from St. Louis to Ottawa from $327

Name: Sheraton Ottawa Hotel
Rating: 8.3

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Good to Know

Essential information to help you plan your flight from St. Louis to Ottawa.

Cheapest Flight Round-trip

$757

Cheapest price found on Priceline for this route in the last 16 days. Found 12 hours ago.

$154 below the typical $911 round-trip on this route.

Outbound · Nov 13

5:00 pmSTLSt Louis Lambert International Airport

1:10 pmYOWOttawa Macdonald-Cartier International Airport

19h 10m · 2 stops via New York City (EWR), Toronto (YYZ)

Return · Nov 20

6:00 amYOWOttawa Macdonald-Cartier International Airport

9:03 amSTLSt Louis Lambert International Airport

28h 3m · 1 stop via New York City (EWR)

Cheapest Flight One-way

$327

Lowest one-way price found on Priceline for this route in the last 16 days. Found 12 days ago.

The typical one-way fare on this route is $439.

Outbound · Oct 29

6:09 amSTLSt Louis Lambert International Airport

1:11 pmYOWOttawa Macdonald-Cartier International Airport

6h 2m · 1 stop via New York City (EWR)

Fastest Flights

$911

Fastest flight found on Priceline for this route in the last 16 days. Found 10 days ago.

You could save 37h 17m of travel time for just $154 more.

Outbound · Nov 2

8:30 amSTLSt Louis Lambert International Airport

2:09 pmYOWOttawa Macdonald-Cartier International Airport

4h 39m · 1 stop via Chicago (ORD)

Return · Nov 9

6:15 amYOWOttawa Macdonald-Cartier International Airport

10:32 amSTLSt Louis Lambert International Airport

5h 17m · 1 stop via Chicago (ORD)

Good deal price

$907

A round-trip at or under $907 is a good deal on this route right now.

75% of the fares we found on this route cost more; only a quarter cost less.

Best time to fly

Evenings

Evening departures average $772 on this route, the lowest of any time of day.

$111 less than the average departure, which is $883.

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Book with an agent for great rates!

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United Airlinesfound Oct 19

11/13/26

5:00 pm

STL

19h 10mEWRYYZ

11/14/26

1:10 pm

YOW

11/20/26

6:00 am

YOW

28h 3mEWR

11/21/26

9:03 am

STL

^$757

United Airlinesfound Oct 10

11/02/26

5:00 pm

STL

19h 11mEWR

11/03/26

1:11 pm

YOW

11/09/26

6:00 am

YOW

16h 52mEWR

11/09/26

9:52 pm

STL

^$787

American Airlinesfound Oct 12

11/10/26

6:00 am

STL

10h 52mORDYYZ

11/10/26

5:52 pm

YOW

11/17/26

7:00 am

YOW

13h 22mYYZORD

11/17/26

7:22 pm

STL

^$861

Air Canadafound Oct 14

11/18/26

4:05 pm

STL

4h 45mYYZ

11/18/26

9:50 pm

YOW

11/25/26

3:10 pm

YOW

18h 42mEWR

11/26/26

8:52 am

STL

^$883

BUNDLE + SAVE

Book a flight & hotel together for extra savings.

On average save $240 per traveler

United Airlinesfound Oct 12

11/10/26

11:29 am

STL

9h 27mEWR

11/10/26

9:56 pm

YOW

11/17/26

6:00 am

YOW

11h 17mEWR

11/17/26

4:17 pm

STL

^$811

American Airlinesfound Oct 12

11/10/26

5:00 am

STL

11h 52mORDYYZ

11/10/26

5:52 pm

YOW

11/17/26

7:00 am

YOW

13h 22mYYZORD

11/17/26

7:22 pm

STL

^$861

Air Canadafound Oct 10

11/02/26

4:05 pm

STL

4h 45mYYZ

11/02/26

9:50 pm

YOW

11/09/26

9:10 am

YOW

7h 16mYYZ

11/09/26

3:26 pm

STL

^$889

Air Canadafound Oct 10

11/02/26

4:05 pm

STL

6h 50mYYZ

11/02/26

11:55 pm

YOW

11/09/26

9:10 am

YOW

7h 16mYYZ

11/09/26

3:26 pm

STL

^$889

United Airlinesfound Oct 14

11/18/26

1:00 pm

STL

24h 29mDCA

11/19/26

2:29 pm

YOW

11/25/26

3:10 pm

YOW

18h 42mEWR

11/26/26

8:52 am

STL

^$861

Air Canadafound Oct 10

11/02/26

4:05 pm

STL

4h 45mYYZ

11/02/26

9:50 pm

YOW

11/09/26

6:15 am

YOW

5h 17mORD

11/09/26

10:32 am

STL

^$907

Top Deals on flights from St. Louis to Ottawa

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

6:09 am

STL

6h 2m1 stop · EWR

Oct 29

1:11 pm

YOW

Search More

as low as

^$327

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

8:00 am

STL

6h 7m1 stop · IAD

Oct 29

3:07 pm

YOW

Search More

as low as

^$327

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

11:29 am

STL

9h 27m1 stop · EWR

Oct 29

9:56 pm

YOW

Search More

as low as

^$327

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

9:59 am

STL

10h 57m1 stop · EWR

Oct 29

9:56 pm

YOW

Search More

as low as

^$327

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

6:09 am

STL

14h 47m1 stop · EWR

Oct 29

9:56 pm

YOW

Search More

as low as

^$327

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

6:00 am

STL

8h 7m2 stops · ORD, IAD

Oct 29

3:07 pm

YOW

Search More

as low as

^$332

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

5:00 am

STL

9h 7m2 stops · ORD, IAD

Oct 29

3:07 pm

YOW

Search More

as low as

^$332

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

6:00 am

STL

7h 29m2 stops · ORD, DCA

Oct 29

2:29 pm

YOW

Search More

as low as

^$386

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

5:00 am

STL

8h 29m2 stops · ORD, DCA

Oct 29

2:29 pm

YOW

Search More

as low as

^$386

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

5:00 am

STL

8h 29m2 stops · ORD, DCA

Oct 29

2:29 pm

YOW

Search More

as low as

^$386

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

7:30 am

STL

8h 50m2 stops · ORD, YYZ

Oct 29

5:20 pm

YOW

Search More

as low as

^$394

St. Louis, US (STL) - Ottawa, CA (YOW)

United Airlines

Oct 29

6:00 am

STL

10h 20m2 stops · ORD, YYZ

Oct 29

5:20 pm

YOW

Search More

as low as

^$394

See all 12 dealsShow fewer deals

Best Ottawa Hotel + Flight Packages

St. Louis - Ottawa packages

Brookstreet Hotel - Ottawa West - Kanata

Round-trip flight from St. Louis

STL to YOW

Brookstreet Hotel - Ottawa West - Kanata

Ottawa, 525 Legget Drive

8.9282 Reviews4.5-Star Hotel

2% Package Savings

^$1,663/person

$3,391 $3,325 total

Incl. Flight + Hotel

Round-trip flight from St. Louis

STL to YOW

Holiday Inn Ottawa East By IHG

Ottawa, 1199 Joseph Cyr Street

7.6927 Reviews3-Star Hotel

7% Package Savings

^$1,312/person

$2,832 $2,624 total

Incl. Flight + Hotel

Round-trip flight from St. Louis

STL to YOW

Hilton Garden Inn Ottawa Airport

Ottawa, 2400 Alert Road

8.31,363 Reviews3-Star Hotel

5% Package Savings

^$1,274/person

$2,674 $2,548 total

Incl. Flight + Hotel

Round-trip flight from St. Louis

STL to YOW

ARC The Hotel Downtown Boutique Ottawa

Ottawa, 140 Slater Street

7.91,076 Reviews4-Star Hotel

19% Package Savings

^$1,442/person

$3,550 $2,884 total

Incl. Flight + Hotel

Holiday Inn Ottawa Dwtn - Parliament Hill By IHG

Round-trip flight from St. Louis

STL to YOW

Holiday Inn Ottawa Dwtn - Parliament Hill By IHG

Ottawa, 402 Queen Street

7.8487 Reviews3.5-Star Hotel

8% Package Savings

^$1,391/person

$3,011 $2,781 total

Incl. Flight + Hotel

Round-trip flight from St. Louis

STL to YOW

Fairmont Chateau Laurier

Ottawa, 1 Rideau Street

8.31,297 Reviews5-Star Hotel

^$2,098/person

$4,196 total

Incl. Flight + Hotel

Holiday Inn Express & Suites Downtown Ottawa East by IHG

Round-trip flight from St. Louis

STL to YOW

Holiday Inn Express & Suites Downtown Ottawa East by IHG

Ottawa, 235 King Edward Avenue

8.12,059 Reviews2.5-Star Hotel

7% Package Savings

^$1,310/person

$2,825 $2,619 total

Incl. Flight + Hotel

Round-trip flight from St. Louis

STL to YOW

Sheraton Ottawa Hotel

Ottawa, 150 Albert Street

8.3616 Reviews4-Star Hotel

3% Package Savings

^$1,741/person

$3,608 $3,482 total

Incl. Flight + Hotel

Best Ottawa Hotel + Flight + Car Packages

St. Louis - Ottawa packages

Round-trip flight from St. Louis

STL to YOW

ARC The Hotel Downtown Boutique Ottawa

Ottawa, 140 Slater Street

7.91,076 Reviews4-Star Hotel

Rental car included

Pick-up in YOW

18% Package Savings

^$1,545/person

$3,779 $3,089 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Holiday Inn Ottawa Dwtn - Parliament Hill By IHG

Ottawa, 402 Queen Street

7.8487 Reviews3.5-Star Hotel

Rental car included

Pick-up in YOW

8% Package Savings

^$1,493/person

$3,242 $2,986 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Fairmont Chateau Laurier

Ottawa, 1 Rideau Street

8.31,297 Reviews5-Star Hotel

Rental car included

Pick-up in YOW

1% Package Savings

^$2,201/person

$4,425 $4,401 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Holiday Inn Express & Suites Downtown Ottawa East by IHG

Ottawa, 235 King Edward Avenue

8.12,059 Reviews2.5-Star Hotel

Rental car included

Pick-up in YOW

8% Package Savings

^$1,412/person

$3,056 $2,824 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Sheraton Ottawa Hotel

Ottawa, 150 Albert Street

8.3616 Reviews4-Star Hotel

Rental car included

Pick-up in YOW

4% Package Savings

^$1,844/person

$3,837 $3,687 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Brookstreet Hotel - Ottawa West - Kanata

Ottawa, 525 Legget Drive

8.9282 Reviews4.5-Star Hotel

Rental car included

Pick-up in YOW

3% Package Savings

^$1,765/person

$3,622 $3,530 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Holiday Inn Ottawa East By IHG

Ottawa, 1199 Joseph Cyr Street

7.6927 Reviews3-Star Hotel

Rental car included

Pick-up in YOW

8% Package Savings

^$1,415/person

$3,061 $2,829 total

Incl. Flight + Hotel + Car

Round-trip flight from St. Louis

STL to YOW

Hilton Garden Inn Ottawa Airport

Ottawa, 2400 Alert Road

8.31,363 Reviews3-Star Hotel

Rental car included

Pick-up in YOW

5% Package Savings

^$1,377/person

$2,904 $2,754 total

Incl. Flight + Hotel + Car

When is the best time of day to fly?

Evening (5pm - 9pm) is the cheapest time of day to fly from St. Louis to Ottawa. At $772 it is 13% cheaper than the average time. Morning (5am - 12pm) is the most expensive time, 6% above average.

Show the data

When is the best time of day to fly?
Time of day	Average fare
Morning	$932
Midday	$914
Afternoon	$914
Evening	$772

What do round-trip flights from St. Louis to Ottawa cost?

Share of fares in each price range.

Show the data

What do round-trip flights from St. Louis to Ottawa cost?
Price range	Share of fares
$750 to $800	1%
$800 to $850	<1%
$850 to $900	4%
$900 to $950	92%
$950 and up	2%

Flight Deals from St. Louis to Ottawa from $327

Good to Know

Top Deals on flights from St. Louis to Ottawa

Best Ottawa Hotel + Flight Packages

Best Ottawa Hotel + Flight + Car Packages

When is the best time of day to fly?

What do round-trip flights from St. Louis to Ottawa cost?

Flights to Ottawa