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Cheap flights from Ontario to Key West from $153

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Key West departing on 3/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:20 pm - 9:06 am
YYZ
-
EYW
12h 46m
1 stop
Multiple Airlines Logo
11:51 am - 2:20 pm
EYW
-
YYZ
26h 29m
1 stop
$300Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
8:20 pm - 9:06 am
YYZ
-
EYW
12h 46m
1 stop
Multiple Airlines Logo
12:25 pm - 2:20 pm
EYW
-
YYZ
25h 55m
2 stops
$367Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
8:20 pm - 9:06 am
YYZ
-
EYW
12h 46m
1 stop
Multiple Airlines Logo
9:46 am - 2:20 pm
EYW
-
YYZ
28h 34m
1 stop
$370Multiple Airlines
Wed, Mar 4 - Sun, Mar 8
Multiple Airlines Logo
3:40 pm - 12:30 pm
YYZ
-
EYW
20h 50m
1 stop
Multiple Airlines Logo
12:25 pm - 10:41 pm
EYW
-
YYZ
10h 16m
1 stop
$383Multiple Airlines
Sat, Mar 7 - Sat, Mar 14
Multiple Airlines Logo
8:20 pm - 9:06 am
YYZ
-
EYW
12h 46m
1 stop
Multiple Airlines Logo
2:25 pm - 2:20 pm
EYW
-
YYZ
23h 55m
2 stops
$423Multiple Airlines
Wed, Mar 4 - Sun, Mar 8
Multiple Airlines Logo
7:15 am - 3:42 pm
YYZ
-
EYW
8h 27m
2 stops
Multiple Airlines Logo
9:46 am - 11:26 am
EYW
-
YYZ
25h 40m
1 stop
$431Multiple Airlines
Thu, Mar 26 - Sun, Mar 29
Multiple Airlines Logo
3:40 pm - 9:21 am
YYZ
-
EYW
17h 41m
2 stops
Multiple Airlines Logo
12:25 pm - 10:41 pm
EYW
-
YYZ
10h 16m
1 stop
$432Multiple Airlines
Sat, Mar 7 - Sat, Mar 14
Multiple Airlines Logo
8:20 pm - 11:30 am
YYZ
-
EYW
15h 10m
2 stops
Multiple Airlines Logo
12:25 pm - 2:20 pm
EYW
-
YYZ
25h 55m
2 stops
$435Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Delta Logo
7:33 pm - 5:01 pm
YUL
-
EYW
21h 28m
2 stops
Delta Logo
2:46 pm - 8:37 am
EYW
-
YUL
17h 51m
2 stops
$511Delta
Mon, Feb 23 - Wed, Mar 4
Delta Logo
7:33 pm - 12:45 pm
YUL
-
EYW
17h 12m
1 stop
Delta Logo
11:59 am - 11:10 pm
EYW
-
YUL
11h 11m
2 stops
$543Delta
Mon, Feb 23 - Tue, Mar 3

Delta flights from Region of Ontario to Key West

Our best Delta deals on Region of Ontario to Key West flight tickets
Delta
Feb 23
YUL7:33 pmMontreal Pierre Elliott Trudeau Intl
17h 12m
1 stop
EYW12:45 pmKey West
Mar 4
EYW2:46 pmKey West
17h 51m
2 stops
YUL8:37 amMontreal Pierre Elliott Trudeau Intl
$511
Delta
Feb 23
YUL7:33 pmMontreal Pierre Elliott Trudeau Intl
17h 12m
1 stop
EYW12:45 pmKey West
Mar 3
EYW11:59 amKey West
11h 11m
2 stops
YUL11:10 pmMontreal Pierre Elliott Trudeau Intl
$543
Delta
Feb 23
YUL7:33 pmMontreal Pierre Elliott Trudeau Intl
17h 12m
1 stop
EYW12:45 pmKey West
Mar 4
EYW7:10 amKey West
9h 43m
1 stop
YUL4:53 pmMontreal Pierre Elliott Trudeau Intl
$570

WestJet flights from Region of Ontario to Key West

Our best WestJet deals on Region of Ontario to Key West flight tickets
WestJet
Mar 20
YYZ7:45 amToronto Pearson Intl
5h 58m
1 stop
EYW1:43 pmKey West
Mar 24
EYW2:40 pmKey West
7h 14m
1 stop
YYZ9:54 pmToronto Pearson Intl
$546
WestJet
Mar 20
YYZ7:45 amToronto Pearson Intl
5h 58m
1 stop
EYW1:43 pmKey West
Mar 20
EYW6:25 pmKey West
5h 32m
1 stop
YYZ11:57 pmToronto Pearson Intl
$637
WestJet
Feb 9
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
28h 25m
1 stop
EYW11:25 amKey West
Feb 18
EYW5:56 pmKey West
22h 57m
1 stop
YUL4:53 pmMontreal Pierre Elliott Trudeau Intl
$729

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Ontario to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 3/18

8:20 pm-9:06 am

1 stop12h 46m

Key West

Wed 3/25

11:51 am-2:20 pm

1 stop26h 29m

$300

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 3/18

8:20 pm-9:06 am

1 stop12h 46m

Key West

Wed 3/25

12:25 pm-2:20 pm

2 stops25h 55m

$367

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 3/4

8:20 pm-9:06 am

1 stop12h 46m

Key West

Sun 3/8

9:46 am-2:20 pm

1 stop28h 34m

$370

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sat 3/7

3:40 pm-12:30 pm

1 stop20h 50m

Key West

Sat 3/14

12:25 pm-10:41 pm

1 stop10h 16m

$383

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 3/4

8:20 pm-9:06 am

1 stop12h 46m

Key West

Sun 3/8

2:25 pm-2:20 pm

2 stops23h 55m

$423

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 3/26

7:15 am-3:42 pm

2 stops8h 27m

Key West

Sun 3/29

9:46 am-11:26 am

1 stop25h 40m

$431

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sat 3/7

3:40 pm-9:21 am

2 stops17h 41m

Key West

Sat 3/14

12:25 pm-10:41 pm

1 stop10h 16m

$432

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 3/18

8:20 pm-11:30 am

2 stops15h 10m

Key West

Wed 3/25

12:25 pm-2:20 pm

2 stops25h 55m

$435

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 2/23

7:33 pm-5:01 pm

2 stops21h 28m

Key West

Wed 3/4

2:46 pm-8:37 am

2 stops17h 51m

$511

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 2/23

7:33 pm-12:45 pm

1 stop17h 12m

Key West

Tue 3/3

11:59 am-11:10 pm

2 stops11h 11m

$543

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

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

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

Delta is the most popular carrier operating from Ontario to Key West

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

4h 51m

Direct flights

None
The fastest flight from Region of Ontario to Key West takes 4h 51m
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 refresh daily.

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Key West Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Key West Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
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 recognisable 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?

Yes. All flights to Key West from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Key West from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Ontario to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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