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Cheap flights from Ontario to Key West from $242

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 8/10. 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
6:30 am - 7:13 pm
YYZ
-
EYW
12h 43m
2 stops
Multiple Airlines Logo
3:27 pm - 4:45 pm
EYW
-
YYZ
25h 18m
1 stop
$495Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
Multiple Airlines Logo
9:50 am - 1:31 pm
YYZ
-
EYW
27h 41m
1 stop
Multiple Airlines Logo
11:46 am - 2:05 pm
EYW
-
YYZ
26h 19m
2 stops
$519Multiple Airlines
Wed, Aug 5 - Wed, Aug 12
Multiple Airlines Logo
6:30 am - 7:13 pm
YYZ
-
EYW
12h 43m
2 stops
Multiple Airlines Logo
12:05 pm - 4:45 pm
EYW
-
YYZ
28h 40m
1 stop
$528Multiple Airlines
Thu, Jul 23 - Thu, Jul 30
Multiple Airlines Logo
7:45 am - 11:27 am
YYZ
-
EYW
27h 42m
1 stop
Multiple Airlines Logo
12:05 pm - 4:45 pm
EYW
-
YYZ
28h 40m
1 stop
$602Multiple Airlines
Thu, Jul 23 - Thu, Jul 30
Delta Logo
7:43 pm - 10:47 am
YUL
-
EYW
15h 04m
2 stops
Delta Logo
6:19 pm - 11:59 pm
EYW
-
YUL
5h 40m
1 stop
$633Delta
Mon, Sep 21 - Thu, Oct 1
Delta Logo
7:00 am - 1:08 pm
YUL
-
EYW
6h 08m
1 stop
Delta Logo
2:35 pm - 9:42 am
EYW
-
YUL
19h 07m
2 stops
$634Delta
Wed, Oct 28 - Sat, Oct 31
Multiple Airlines Logo
4:50 pm - 11:25 am
YYZ
-
EYW
18h 35m
1 stop
Multiple Airlines Logo
4:35 pm - 9:55 pm
EYW
-
YYZ
29h 20m
2 stops
$634Multiple Airlines
Sat, Aug 8 - Sat, Aug 15
Multiple Airlines Logo
6:00 am - 10:50 am
YYZ
-
EYW
4h 50m
1 stop
Multiple Airlines Logo
3:27 pm - 4:45 pm
EYW
-
YYZ
25h 18m
1 stop
$636Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
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
$651United Airlines
Sat, Jul 25 - Fri, Aug 7
American Airlines Logo
7:51 am - 6:48 pm
YUL
-
EYW
10h 57m
2 stops
American Airlines Logo
2:31 pm - 9:44 pm
EYW
-
YUL
7h 13m
1 stop
$656American Airlines
Sat, Jul 25 - Fri, Aug 7

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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
Sep 21
YUL7:43 pmMontreal Pierre Elliott Trudeau Intl
15h 04m
2 stops
EYW10:47 amKey West
Oct 1
EYW6:19 pmKey West
5h 40m
1 stop
YUL11:59 pmMontreal Pierre Elliott Trudeau Intl
$633
Delta
Oct 28
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
6h 08m
1 stop
EYW1:08 pmKey West
Oct 31
EYW2:35 pmKey West
19h 07m
2 stops
YUL9:42 amMontreal Pierre Elliott Trudeau Intl
$634
Delta
Jul 21
YYZ7:45 amToronto Pearson Intl
9h 38m
1 stop
EYW5:23 pmKey West
Jul 22
EYW6:18 pmKey West
5h 40m
1 stop
YYZ11:58 pmToronto Pearson Intl
$637

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
Jul 25
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
7h 30m
1 stop
EYW1:30 pmKey West
Aug 7
EYW2:26 pmKey West
7h 40m
1 stop
YUL10:06 pmMontreal Pierre Elliott Trudeau Intl
$651
United Airlines
Jul 21
YYZ7:00 amToronto Pearson Intl
8h 19m
1 stop
EYW3:19 pmKey West
Jul 22
EYW4:00 pmKey West
7h 59m
1 stop
YYZ11:59 pmToronto Pearson Intl
$656
United Airlines
Jul 11
YYZ7:30 amToronto Pearson Intl
6h 00m
1 stop
EYW1:30 pmKey West
Jul 18
EYW2:26 pmKey West
7h 57m
1 stop
YYZ10:23 pmToronto Pearson Intl
$688

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 June 26, 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

Thu 8/6

6:30 am-7:13 pm

2 stops12h 43m

Key West

Mon 8/10

3:27 pm-4:45 pm

1 stop25h 18m

$495

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 8/5

9:50 am-1:31 pm

1 stop27h 41m

Key West

Wed 8/12

11:46 am-2:05 pm

2 stops26h 19m

$519

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 7/23

6:30 am-7:13 pm

2 stops12h 43m

Key West

Thu 7/30

12:05 pm-4:45 pm

1 stop28h 40m

$528

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 7/23

7:45 am-11:27 am

1 stop27h 42m

Key West

Thu 7/30

12:05 pm-4:45 pm

1 stop28h 40m

$602

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 9/21

7:43 pm-10:47 am

2 stops15h 04m

Key West

Thu 10/1

6:19 pm-11:59 pm

1 stop5h 40m

$633

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Wed 10/28

7:00 am-1:08 pm

1 stop6h 08m

Key West

Sat 10/31

2:35 pm-9:42 am

2 stops19h 07m

$634

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sat 8/8

4:50 pm-11:25 am

1 stop18h 35m

Key West

Sat 8/15

4:35 pm-9:55 pm

2 stops29h 20m

$634

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 8/6

6:00 am-10:50 am

1 stop4h 50m

Key West

Mon 8/10

3:27 pm-4:45 pm

1 stop25h 18m

$636
Quickest round-trip

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sat 7/25

6:00 am-1:30 pm

1 stop7h 30m

Key West

Fri 8/7

2:26 pm-10:06 pm

1 stop7h 40m

$651

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sat 7/25

7:51 am-6:48 pm

2 stops10h 57m

Key West

Fri 8/7

2:31 pm-9:44 pm

1 stop7h 13m

$656

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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 59m

Direct flights

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