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Cheap flights from Ontario to Key West from $255

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 5/7. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:40 pm - 11:30 am
YYZ
-
EYW
19h 50m
1 stop
Multiple Airlines Logo
11:51 am - 2:05 pm
EYW
-
YYZ
26h 14m
2 stops
$373Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
6:30 am - 11:31 am
YYZ
-
EYW
29h 01m
1 stop
Multiple Airlines Logo
11:51 am - 2:05 pm
EYW
-
YYZ
26h 14m
2 stops
$379Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
3:40 pm - 11:30 am
YYZ
-
EYW
19h 50m
1 stop
Multiple Airlines Logo
11:51 am - 12:14 am
EYW
-
YYZ
12h 23m
1 stop
$420Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
8:20 pm - 12:26 pm
YYZ
-
EYW
16h 06m
1 stop
Multiple Airlines Logo
2:35 pm - 11:20 pm
EYW
-
YYZ
8h 45m
1 stop
$421Multiple Airlines
Sun, Apr 5 - Fri, Apr 10
Multiple Airlines Logo
3:40 pm - 11:30 am
YYZ
-
EYW
19h 50m
1 stop
Multiple Airlines Logo
11:51 am - 12:14 am
EYW
-
YYZ
12h 23m
1 stop
$427Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
3:20 pm - 11:11 am
YYZ
-
EYW
19h 51m
2 stops
Multiple Airlines Logo
12:26 pm - 2:05 pm
EYW
-
YYZ
25h 39m
1 stop
$444Multiple Airlines
Tue, Apr 21 - Sun, Apr 26
Delta Logo
7:44 pm - 1:30 pm
YUL
-
EYW
17h 46m
1 stop
Delta Logo
2:32 pm - 8:39 am
EYW
-
YUL
18h 07m
1 stop
$559Delta
Fri, May 15 - Tue, May 19
Delta Logo
7:10 am - 7:49 pm
YUL
-
EYW
12h 39m
2 stops
Delta Logo
2:32 pm - 8:39 am
EYW
-
YUL
18h 07m
1 stop
$584Delta
Fri, May 15 - Tue, May 19
Delta Logo
7:10 am - 7:49 pm
YUL
-
EYW
12h 39m
2 stops
Delta Logo
6:19 pm - 11:57 pm
EYW
-
YUL
5h 38m
1 stop
$606Delta
Sun, May 10 - Sun, May 17
American Airlines Logo
7:14 am - 1:08 pm
YUL
-
EYW
5h 54m
1 stop
American Airlines Logo
7:49 pm - 12:28 pm
EYW
-
YUL
16h 39m
2 stops
$621American Airlines
Sat, May 9 - Sat, May 23

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
Apr 27
YYZ9:35 amToronto Pearson Intl
7h 07m
1 stop
EYW4:42 pmKey West
Apr 28
EYW6:22 pmKey West
15h 42m
1 stop
YYZ10:04 amToronto Pearson Intl
$600
United Airlines
Apr 21
YYZ9:35 amToronto Pearson Intl
7h 07m
1 stop
EYW4:42 pmKey West
Apr 22
EYW6:22 pmKey West
5h 32m
1 stop
YYZ11:54 pmToronto Pearson Intl
$603
United Airlines
Apr 19
YYZ9:35 amToronto Pearson Intl
7h 07m
1 stop
EYW4:42 pmKey West
Apr 23
EYW2:35 pmKey West
7h 48m
1 stop
YYZ10:23 pmToronto Pearson Intl
$617

WestJet flights from Region of Ontario to Key West

Our best WestJet deals on Region of Ontario to Key West flight tickets
WestJet
May 29
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
12h 49m
1 stop
EYW7:49 pmKey West
Jun 5
EYW6:19 pmKey West
48h 01m
2 stops
YUL6:20 pmMontreal Pierre Elliott Trudeau Intl
$759
WestJet
May 3
YUL7:50 pmMontreal Pierre Elliott Trudeau Intl
21h 33m
2 stops
EYW5:23 pmKey West
May 10
EYW6:19 pmKey West
5h 38m
1 stop
YUL11:57 pmMontreal Pierre Elliott Trudeau Intl
$765
WestJet
Apr 21
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
10h 38m
2 stops
EYW5:23 pmKey West
Apr 23
EYW11:45 amKey West
12h 53m
2 stops
YUL12:38 amMontreal Pierre Elliott Trudeau Intl
$781

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 March 27, 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

Cheapest round-trip

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 4/13

3:40 pm-11:30 am

1 stop19h 50m

Key West

Wed 4/22

11:51 am-2:05 pm

2 stops26h 14m

$373

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 4/22

6:30 am-11:31 am

1 stop29h 01m

Key West

Wed 4/29

11:51 am-2:05 pm

2 stops26h 14m

$379

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 4/13

3:40 pm-11:30 am

1 stop19h 50m

Key West

Wed 4/22

11:51 am-12:14 am

1 stop12h 23m

$420

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sun 4/5

8:20 pm-12:26 pm

1 stop16h 06m

Key West

Fri 4/10

2:35 pm-11:20 pm

1 stop8h 45m

$421

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 4/13

3:40 pm-11:30 am

1 stop19h 50m

Key West

Wed 4/22

11:51 am-12:14 am

1 stop12h 23m

$427

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Tue 4/21

3:20 pm-11:11 am

2 stops19h 51m

Key West

Sun 4/26

12:26 pm-2:05 pm

1 stop25h 39m

$444

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Fri 5/15

7:44 pm-1:30 pm

1 stop17h 46m

Key West

Tue 5/19

2:32 pm-8:39 am

1 stop18h 07m

$559

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Fri 5/15

7:10 am-7:49 pm

2 stops12h 39m

Key West

Tue 5/19

2:32 pm-8:39 am

1 stop18h 07m

$584
Quickest round-trip

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sun 5/10

7:10 am-7:49 pm

2 stops12h 39m

Key West

Sun 5/17

6:19 pm-11:57 pm

1 stop5h 38m

$606

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

7:14 am-1:08 pm

1 stop5h 54m

Key West

Sat 5/23

7:49 pm-12:28 pm

2 stops16h 39m

$621

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 and United Airlines are the most popular carriers 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

6h 00m

Direct flights

None
The fastest flight from Region of Ontario to Key West takes 6h 00m
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

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