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Cheap flights from Ontario to Key West from $205

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 6/1. 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
7:45 am - 11:25 am
YYZ
-
EYW
27h 40m
1 stop
Multiple Airlines Logo
12:07 pm - 8:05 pm
EYW
-
YYZ
7h 58m
1 stop
$462Multiple Airlines
Wed, Jul 8 - Mon, Jul 13
Multiple Airlines Logo
4:45 pm - 3:27 pm
YYZ
-
EYW
22h 42m
2 stops
Multiple Airlines Logo
12:07 pm - 8:05 pm
EYW
-
YYZ
7h 58m
1 stop
$478Multiple Airlines
Wed, Jul 8 - Mon, Jul 13
Multiple Airlines Logo
11:15 pm - 11:25 am
YYZ
-
EYW
36h 10m
2 stops
Multiple Airlines Logo
12:07 pm - 8:05 pm
EYW
-
YYZ
7h 58m
1 stop
$504Multiple Airlines
Fri, Jun 5 - Fri, Jun 12
Multiple Airlines Logo
8:10 am - 12:34 pm
YYZ
-
EYW
28h 24m
1 stop
Multiple Airlines Logo
12:07 pm - 8:05 pm
EYW
-
YYZ
7h 58m
1 stop
$525Multiple Airlines
Mon, Jun 15 - Fri, Jun 19
Delta Logo
7:44 pm - 11:02 am
YUL
-
EYW
15h 18m
2 stops
Delta Logo
6:24 pm - 11:55 pm
EYW
-
YUL
5h 31m
1 stop
$624Delta
Mon, Jun 8 - Mon, Jun 15
American Airlines Logo
7:51 am - 1:41 pm
YUL
-
EYW
5h 50m
1 stop
American Airlines Logo
7:33 pm - 11:43 am
EYW
-
YUL
16h 10m
2 stops
$635American Airlines
Sat, Jul 25 - Fri, Jul 31
United Airlines Logo
6:00 am - 1:30 pm
YUL
-
EYW
7h 30m
1 stop
United Airlines Logo
2:26 pm - 10:06 pm
EYW
-
YUL
7h 40m
1 stop
$642United Airlines
Mon, Jun 8 - Mon, Jun 15
Delta Logo
7:00 am - 5:27 pm
YUL
-
EYW
10h 27m
1 stop
Delta Logo
7:50 am - 5:42 pm
EYW
-
YUL
9h 52m
1 stop
$643Delta
Mon, Jul 6 - Mon, Jul 27
American Airlines Logo
5:33 pm - 12:16 pm
YUL
-
EYW
18h 43m
2 stops
American Airlines Logo
7:29 pm - 1:54 pm
EYW
-
YUL
18h 25m
1 stop
$652American Airlines
Fri, Jun 5 - Fri, Jun 12
United Airlines Logo
6:00 am - 1:30 pm
YUL
-
EYW
7h 30m
1 stop
United Airlines Logo
2:26 pm - 10:06 pm
EYW
-
YUL
7h 40m
1 stop
$663United Airlines
Thu, Jul 16 - Wed, Jul 22

WestJet flights from Region of Ontario to Key West

Our best WestJet deals on Region of Ontario to Key West flight tickets
WestJet
May 30
YUL12:40 pmMontreal Pierre Elliott Trudeau Intl
7h 09m
1 stop
EYW7:49 pmKey West
Jun 4
EYW6:19 pmKey West
5h 38m
1 stop
YUL11:57 pmMontreal Pierre Elliott Trudeau Intl
$702
WestJet
May 30
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
13h 04m
2 stops
EYW7:49 pmKey West
Jun 4
EYW6:19 pmKey West
5h 38m
1 stop
YUL11:57 pmMontreal Pierre Elliott Trudeau Intl
$711
WestJet
May 30
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
10h 23m
1 stop
EYW5:23 pmKey West
Jun 4
EYW6:19 pmKey West
5h 38m
1 stop
YUL11:57 pmMontreal Pierre Elliott Trudeau Intl
$728

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
Jun 8
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
7h 30m
1 stop
EYW1:30 pmKey West
Jun 15
EYW2:26 pmKey West
7h 40m
1 stop
YUL10:06 pmMontreal Pierre Elliott Trudeau Intl
$642
United Airlines
Jun 7
YYZ7:30 amToronto Pearson Intl
6h 00m
1 stop
EYW1:30 pmKey West
Jun 11
EYW2:26 pmKey West
7h 57m
1 stop
YYZ10:23 pmToronto Pearson Intl
$643
United Airlines
Jun 7
YYZ7:30 amToronto Pearson Intl
6h 00m
1 stop
EYW1:30 pmKey West
Jun 11
EYW2:26 pmKey West
7h 57m
1 stop
YYZ10:23 pmToronto Pearson Intl
$656

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 May 12, 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

Wed 7/8

7:45 am-11:25 am

1 stop27h 40m

Key West

Mon 7/13

12:07 pm-8:05 pm

1 stop7h 58m

$462

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 7/8

4:45 pm-3:27 pm

2 stops22h 42m

Key West

Mon 7/13

12:07 pm-8:05 pm

1 stop7h 58m

$478

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Fri 6/5

11:15 pm-11:25 am

2 stops36h 10m

Key West

Fri 6/12

12:07 pm-8:05 pm

1 stop7h 58m

$504

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 6/15

8:10 am-12:34 pm

1 stop28h 24m

Key West

Fri 6/19

12:07 pm-8:05 pm

1 stop7h 58m

$525

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 6/8

7:44 pm-11:02 am

2 stops15h 18m

Key West

Mon 6/15

6:24 pm-11:55 pm

1 stop5h 31m

$624

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sat 7/25

7:51 am-1:41 pm

1 stop5h 50m

Key West

Fri 7/31

7:33 pm-11:43 am

2 stops16h 10m

$635
Quickest round-trip

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 6/8

6:00 am-1:30 pm

1 stop7h 30m

Key West

Mon 6/15

2:26 pm-10:06 pm

1 stop7h 40m

$642

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 7/6

7:00 am-5:27 pm

1 stop10h 27m

Key West

Mon 7/27

7:50 am-5:42 pm

1 stop9h 52m

$643

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Fri 6/5

5:33 pm-12:16 pm

2 stops18h 43m

Key West

Fri 6/12

7:29 pm-1:54 pm

1 stop18h 25m

$652

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Thu 7/16

6:00 am-1:30 pm

1 stop7h 30m

Key West

Wed 7/22

2:26 pm-10:06 pm

1 stop7h 40m

$663

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 April is also very affordable. Most momondo users find prices during this month for around $427.

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

8h 59m

Direct flights

None
The fastest flight from Region of Ontario to Key West takes 8h 59m
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.
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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

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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