What is the cheapest airline that flies from Ontario to Key West?

United Airlines is the most popular carrier operating from Ontario to Key West

When did momondo last update prices for flights from Ontario to Key West Airport?

Prices for flights from Ontario to Key West Airport are updated daily.

How many operators does momondo search for flights from Ontario to Key West Airport?

As of December 2025, there is 1 operator available to choose from for flights from Ontario to Key West Airport.

How old do you have to be to fly from Ontario to Key West Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 213 Cheap Flights from Ontario to Key West in 2025/26

1 adult

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Find the cheapest flights from Ontario to Key West

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 a.m. - 9:37 p.m.

YYZ

EYW

14h 22m2 stops

2:25 p.m. - 11:20 p.m.

EYW

YYZ

8h 55m1 stop

C$ 343Multiple Airlines

Thu, 22 Jan - Mon, 26 Jan

7:00 a.m. - 1:30 p.m.

YYZ

EYW

6h 30m1 stop

2:25 p.m. - 11:20 p.m.

EYW

YYZ

8h 55m1 stop

C$ 351Multiple Airlines

Mon, 19 Jan - Mon, 26 Jan

7:15 a.m. - 9:26 a.m.

YYZ

EYW

26h 11m2 stops

12:51 p.m. - 11:20 p.m.

EYW

YYZ

10h 29m1 stop

C$ 357Multiple Airlines

Wed, 14 Jan - Sun, 18 Jan

2:15 p.m. - 10:21 a.m.

YYZ

EYW

20h 06m1 stop

12:51 p.m. - 11:20 p.m.

EYW

YYZ

10h 29m1 stop

C$ 359Multiple Airlines

Wed, 14 Jan - Sun, 18 Jan

2:15 p.m. - 9:09 a.m.

YYZ

EYW

18h 54m1 stop

2:25 p.m. - 11:20 p.m.

EYW

YYZ

8h 55m1 stop

C$ 361Multiple Airlines

Thu, 22 Jan - Mon, 26 Jan

9:34 a.m. - 7:40 p.m.

YUL

EYW

10h 06m2 stops

7:10 a.m. - 6:37 p.m.

EYW

YUL

11h 27m2 stops

C$ 756Delta

Fri, 23 Jan - Wed, 28 Jan

1:25 p.m. - 1:03 p.m.

YUL

EYW

23h 38m2 stops

6:05 p.m. - 6:55 a.m.

EYW

YUL

12h 50m2 stops

C$ 763United Airlines

Tue, 20 Jan - Wed, 21 Jan

2:25 p.m. - 10:43 p.m.

YUL

EYW

8h 18m1 stop

6:47 p.m. - 3:14 p.m.

EYW

YUL

20h 27m1 stop

C$ 772American Airlines

Sat, 28 Feb - Mon, 9 Mar

7:30 a.m. - 7:10 p.m.

YUL

EYW

11h 40m2 stops

1:22 p.m. - 10:44 p.m.

EYW

YUL

9h 22m1 stop

C$ 794American Airlines

Tue, 20 Jan - Wed, 21 Jan

9:15 a.m. - 4:22 p.m.

YUL

EYW

7h 07m1 stop

6:05 p.m. - 6:55 a.m.

EYW

YUL

12h 50m2 stops

C$ 846United Airlines

Tue, 20 Jan - Wed, 21 Jan

United Airlines flights from Region of Ontario to Key West

Our best United Airlines deals on Region of Ontario to Key West flight tickets

United Airlines

20 Jan

YUL1:25 p.m.Montreal Pierre Elliott Trudeau Intl

23h 38m

2 stops

EYW1:03 p.m.Key West

21 Jan

EYW6:05 p.m.Key West

12h 50m

2 stops

YUL6:55 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 763

Find similar

United Airlines

20 Jan

YUL9:15 a.m.Montreal Pierre Elliott Trudeau Intl

7h 07m

1 stop

EYW4:22 p.m.Key West

21 Jan

EYW6:05 p.m.Key West

12h 50m

2 stops

YUL6:55 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 846

Find similar

United Airlines

20 Jan

YUL9:15 a.m.Montreal Pierre Elliott Trudeau Intl

7h 07m

1 stop

EYW4:22 p.m.Key West

21 Jan

EYW6:05 p.m.Key West

12h 50m

2 stops

YUL6:55 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 851

Find similar

American Airlines flights from Region of Ontario to Key West

Our best American Airlines deals on Region of Ontario to Key West flight tickets

American Airlines

28 Feb

YUL2:25 p.m.Montreal Pierre Elliott Trudeau Intl

8h 18m

1 stop

EYW10:43 p.m.Key West

9 Mar

EYW6:47 p.m.Key West

20h 27m

1 stop

YUL3:14 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 772

Find similar

American Airlines

20 Jan

YUL7:30 a.m.Montreal Pierre Elliott Trudeau Intl

11h 40m

2 stops

EYW7:10 p.m.Key West

21 Jan

EYW1:22 p.m.Key West

9h 22m

1 stop

YUL10:44 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 794

Find similar

American Airlines

10 Jan

YYZ5:15 p.m.Toronto Pearson Intl

17h 23m

1 stop

EYW10:38 a.m.Key West

21 Jan

EYW5:21 p.m.Key West

18h 38m

1 stop

YYZ11:59 a.m.Toronto Pearson Intl

C$ 802

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 22/1

7:15 a.m.-9:37 p.m.

2 stops14h 22m

Key West

Mon 26/1

2:25 p.m.-11:20 p.m.

1 stop8h 55m

C$ 343

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 19/1

7:00 a.m.-1:30 p.m.

1 stop6h 30m

Key West

Mon 26/1

2:25 p.m.-11:20 p.m.

1 stop8h 55m

C$ 351

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 14/1

7:15 a.m.-9:26 a.m.

2 stops26h 11m

Key West

Sun 18/1

12:51 p.m.-11:20 p.m.

1 stop10h 29m

C$ 357

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 14/1

2:15 p.m.-10:21 a.m.

1 stop20h 06m

Key West

Sun 18/1

12:51 p.m.-11:20 p.m.

1 stop10h 29m

C$ 359

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 22/1

2:15 p.m.-9:09 a.m.

1 stop18h 54m

Key West

Mon 26/1

2:25 p.m.-11:20 p.m.

1 stop8h 55m

C$ 361

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Fri 23/1

9:34 a.m.-7:40 p.m.

2 stops10h 06m

Key West

Wed 28/1

7:10 a.m.-6:37 p.m.

2 stops11h 27m

C$ 756

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 20/1

1:25 p.m.-1:03 p.m.

2 stops23h 38m

Key West

Wed 21/1

6:05 p.m.-6:55 a.m.

2 stops12h 50m

C$ 763

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sat 28/2

2:25 p.m.-10:43 p.m.

1 stop8h 18m

Key West

Mon 9/3

6:47 p.m.-3:14 p.m.

1 stop20h 27m

C$ 772

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 20/1

7:30 a.m.-7:10 p.m.

2 stops11h 40m

Key West

Wed 21/1

1:22 p.m.-10:44 p.m.

1 stop9h 22m

C$ 794

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 20/1

9:15 a.m.-4:22 p.m.

1 stop7h 07m

Key West

Wed 21/1

6:05 p.m.-6:55 a.m.

2 stops12h 50m

C$ 846

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Region of Ontario to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Key West?

According to our data, Wednesday is the cheapest day to fly to Key West from Region of Ontario. The lowest ticket price found for a Wednesday departure recently was C$ 829. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Key West on Saturday is C$ 948.

What is the cheapest time of day to depart on your flight to Key West?

Our most recent data shows that the best time of day to fly to Key West is at noon. Flights from Region of Ontario to Key West during this time can be as low as C$ 884. Try not to purchase tickets in the morning because they tend to be around C$ 912. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Region of Ontario to Key West flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Key West

Fastest flight time	6h 30m
Direct flights	None

The fastest flight from Region of Ontario to Key West takes 6h 30m

There are no direct flights from Region of Ontario to Key West. There are no popular flight routes from Region of Ontario to Key West.

Search flight deals

When did momondo last update prices for flights from Ontario to Key West Airport?
Prices for flights from Ontario to Key West Airport are updated daily.
How many operators does momondo search for flights from Ontario to Key West Airport?
As of December 2025, there is 1 operator available to choose from for flights from Ontario to Key West Airport.
How old do you have to be to fly from Ontario to Key West Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Region of Ontario to Key West

Compare and see reviews for airlines that fly from Region of Ontario to Key West with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom C$ 814	Free Cancellation	Rating 7.2 3,222 reviews		Search WestJet flights

Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Key West?

Finding the right flight to Key West from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Key West quick and easy, saving you time and money.

Can I find flights from Ontario to Key West with flexible booking policies on momondo?

All flight searches from Ontario to Key West on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Key West?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from Ontario.

I’m not ready to book a flight from Ontario to Key West right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Key West now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Key West and let you know when they change.