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Cheap flights from Ontario to Key West from $176

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 9/7. 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
1 adult, Economy, 0 bags

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
10:15 am - 3:09 pmYYZ  Toronto Pearson Intl-EYW Key West
28h 54m1 stop Tampa
Multiple Airlines Logo
10:45 am - 8:40 pmEYW  Key West-YYZ Toronto Pearson Intl
9h 55m1 stop Tampa
$318Multiple Airlines
Fri, Nov 27 - Wed, Dec 2
Multiple Airlines Logo
2:20 pm - 11:21 amYYZ  Toronto Pearson Intl-EYW Key West
21h 01m1 stop Tampa
Multiple Airlines Logo
10:04 am - 9:19 pmEYW  Key West-YYZ Toronto Pearson Intl
11h 15m1 stop Tampa
$412Multiple Airlines
Sat, Oct 17 - Sat, Oct 24
Multiple Airlines Logo
4:50 pm - 11:25 amYYZ  Toronto Pearson Intl-EYW Key West
18h 35m1 stop Orlando
Multiple Airlines Logo
10:04 am - 2:05 pmEYW  Key West-YYZ Toronto Pearson Intl
28h 01m2 stops Tampa Fort Lauderdale
$447Multiple Airlines
Sat, Sep 5 - Wed, Sep 9
Multiple Airlines Logo
4:50 pm - 12:29 pmYYZ  Toronto Pearson Intl-EYW Key West
19h 39m1 stop Tampa
Multiple Airlines Logo
10:45 am - 8:17 pmEYW  Key West-YYZ Toronto Pearson Intl
9h 32m2 stops Tampa New York LaGuardia
$488Multiple Airlines
Fri, Nov 27 - Wed, Dec 2
United Airlines Logo
9:00 pm - 11:11 amYYZ  Toronto Pearson Intl-EYW Key West
14h 11m1 stop Chicago O'Hare Intl
United Airlines Logo
2:00 pm - 9:34 pmEYW  Key West-YYZ Toronto Pearson Intl
7h 34m1 stop Chicago O'Hare Intl
$497United Airlines
Tue, Dec 8 - Wed, Dec 9
WestJet Logo
1:34 pm - 8:00 pmYYZ  Toronto Pearson Intl-EYW Key West
6h 26m1 stop Atlanta Hartsfield-Jackson
WestJet Logo
7:40 am - 5:18 pmEYW  Key West-YYZ Toronto Pearson Intl
9h 38m1 stop Atlanta Hartsfield-Jackson
$498WestJet
Tue, Sep 29 - Tue, Oct 6
United Airlines Logo
9:00 pm - 11:11 amYYZ  Toronto Pearson Intl-EYW Key West
14h 11m1 stop Chicago O'Hare Intl
United Airlines Logo
2:00 pm - 9:34 pmEYW  Key West-YYZ Toronto Pearson Intl
7h 34m1 stop Chicago O'Hare Intl
$499United Airlines
Tue, Dec 8 - Wed, Dec 9
United Airlines Logo
9:00 pm - 11:11 amYYZ  Toronto Pearson Intl-EYW Key West
14h 11m1 stop Chicago O'Hare Intl
United Airlines Logo
2:00 pm - 9:34 pmEYW  Key West-YYZ Toronto Pearson Intl
7h 34m1 stop Chicago O'Hare Intl
$500United Airlines
Tue, Dec 8 - Wed, Dec 9
Delta Logo
12:44 pm - 8:02 pmYUL  Montreal Pierre Elliott Trudeau Intl-EYW Key West
7h 18m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:02 pm - 11:58 pmEYW  Key West-YUL Montreal Pierre Elliott Trudeau Intl
5h 56m1 stop Atlanta Hartsfield-Jackson
$502Delta
Tue, Nov 17 - Tue, Nov 24
Delta Logo
7:00 am - 5:07 pmYUL  Montreal Pierre Elliott Trudeau Intl-EYW Key West
10h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:02 pm - 11:58 pmEYW  Key West-YUL Montreal Pierre Elliott Trudeau Intl
5h 56m1 stop Atlanta Hartsfield-Jackson
$503Delta
Tue, Dec 8 - Wed, Dec 9

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Delta flights from Region of Ontario to Key West

Our best Delta deals on Region of Ontario to Key West flight tickets
Delta
Nov 17
YUL12:44 pmMontreal Pierre Elliott Trudeau Intl
7h 18m
1 stop
EYW8:02 pmKey West
Nov 24
EYW6:02 pmKey West
5h 56m
1 stop
YUL11:58 pmMontreal Pierre Elliott Trudeau Intl
$502
Delta
Sep 5
YYZ7:45 amToronto Pearson Intl
7h 07m
1 stop
EYW2:52 pmKey West
Sep 9
EYW7:40 amKey West
9h 38m
1 stop
YYZ5:18 pmToronto Pearson Intl
$503
Delta
Nov 11
YUL12:44 pmMontreal Pierre Elliott Trudeau Intl
7h 18m
1 stop
EYW8:02 pmKey West
Nov 18
EYW7:35 amKey West
9h 54m
1 stop
YUL5:29 pmMontreal Pierre Elliott Trudeau Intl
$504

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
Sep 2
YYZ6:00 amToronto Pearson Intl
7h 08m
1 stop
EYW1:08 pmKey West
Sep 5
EYW2:31 pmKey West
7h 07m
1 stop
YYZ9:38 pmToronto Pearson Intl
$513
American Airlines
Sep 2
YYZ6:00 amToronto Pearson Intl
7h 45m
1 stop
EYW1:45 pmKey West
Sep 5
EYW1:35 pmKey West
10h 11m
2 stops
YYZ11:46 pmToronto Pearson Intl
$523
American Airlines
Sep 2
YYZ6:00 amToronto Pearson Intl
7h 08m
2 stops
EYW1:08 pmKey West
Sep 5
EYW1:35 pmKey West
10h 11m
2 stops
YYZ11:46 pmToronto Pearson Intl
$528

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 August 10, 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 Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Fri 11/27

10:15 am-3:09 pm

1 stop28h 54m

Key West

Wed 12/2

10:45 am-8:40 pm

1 stop9h 55m

$318

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Sat 10/17

2:20 pm-11:21 am

1 stop21h 01m

Key West

Sat 10/24

10:04 am-9:19 pm

1 stop11h 15m

$412

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Sat 9/5

4:50 pm-11:25 am

1 stop18h 35m

Key West

Wed 9/9

10:04 am-2:05 pm

2 stops28h 01m

$447

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Fri 11/27

4:50 pm-12:29 pm

1 stop19h 39m

Key West

Wed 12/2

10:45 am-8:17 pm

2 stops9h 32m

$488

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Tue 12/8

9:00 pm-11:11 am

1 stop14h 11m

Key West

Wed 12/9

2:00 pm-9:34 pm

1 stop7h 34m

$497

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Tue 9/29

1:34 pm-8:00 pm

1 stop6h 26m

Key West

Tue 10/6

7:40 am-5:18 pm

1 stop9h 38m

$498

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Tue 12/8

9:00 pm-11:11 am

1 stop14h 11m

Key West

Wed 12/9

2:00 pm-9:34 pm

1 stop7h 34m

$499

TorontoKey West

YYZ Toronto Pearson Intl - EYW Key West

YYZEYW

Toronto Pearson Intl

Tue 12/8

9:00 pm-11:11 am

1 stop14h 11m

Key West

Wed 12/9

2:00 pm-9:34 pm

1 stop7h 34m

$500
Quickest round-trip

MontrealKey West

YUL Montreal Pierre Elliott Trudeau Intl - EYW Key West

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 11/17

12:44 pm-8:02 pm

1 stop7h 18m

Key West

Tue 11/24

6:02 pm-11:58 pm

1 stop5h 56m

$502

MontrealKey West

YUL Montreal Pierre Elliott Trudeau Intl - EYW Key West

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 12/8

7:00 am-5:07 pm

1 stop10h 07m

Key West

Wed 12/9

6:02 pm-11:58 pm

1 stop5h 56m

$503

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 month to fly to Key West?

In general, September is the cheapest month to fly from Region of Ontario to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Key West during the month of September, then departing from Region of Ontario during the month January is also very affordable. Most momondo users find prices during this month for around $0.

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

5h 08m

Direct flights

None
The fastest flight from Region of Ontario to Key West takes 5h 08m
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

Frequently asked questions about flying 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 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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