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Key West

$218+ Cheap flights from Ontario to Key West (EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — EYW
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Ontario to Key West

Keep the following information in mind while searching for Ontario to Key West flight deals. Data was last updated July 31, 2025.

Round-trip from

$432
(Delta)

One-way from

$218
(Kiwi.com)

Popular in

September

Cheapest in

October

Average price

$670
From Ontario to Key West
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One-way flight from Ontario to Key West
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Highest demand for flights based on searches. 8% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Ontario to Key West

Cheapest flights from Ontario to Key West
Explore the most affordable flight options available from Ontario to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:45 amYYZ - EYW
1 stop25h 37mMultiple Airlines
Fri 8/151:47 pmEYW - YYZ
1 stop7h 36mMultiple Airlines
Deal found 7/31$448
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:00 amYUL - EYW
2 stops11h 12mDelta
Wed 10/157:40 amEYW - YUL
2 stops15h 34mDelta
Deal found 7/29$568
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:17 pmYYZ - EYW
1 stop18h 32mAmerican Airlines
Sat 9/205:08 pmEYW - YYZ
1 stop18h 51mAmerican Airlines
Deal found 7/30$569
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:40 pmYUL - EYW
1 stop18h 11mAmerican Airlines
Wed 1/75:24 pmEYW - YUL
1 stop5h 21mAmerican Airlines
Deal found 7/30$618
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:00 amYUL - EYW
1 stop8h 29mUnited Airlines
Thu 10/163:12 pmEYW - YUL
1 stop6h 54mUnited Airlines
Deal found 7/29$635
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:41 pmYUL - EYW
1 stop25h 25mWestJet
Tue 10/147:40 amEYW - YUL
1 stop9h 54mWestJet
Deal found 7/29$646
This FlightHub deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:15 amYYZ - EYW
1 stop11h 00mWestJet
Sun 9/147:00 amEYW - YYZ
1 stop14h 51mWestJet
Deal found 7/31$650
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/109:00 pmYYZ - EYW
2 stops17h 01mUnited Airlines
Sat 9/133:05 pmEYW - YYZ
1 stop7h 18mUnited Airlines
Deal found 7/31$659
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:15 amYYZ - EYW
2 stops11h 12mDelta
Thu 8/216:22 pmEYW - YYZ
1 stop5h 37mDelta
Deal found 7/31$663
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/196:45 amYUL - EYW
3 stops26h 37mMultiple Airlines
Fri 8/2210:02 amEYW - YUL
2 stops26h 23mMultiple Airlines
Deal found 7/30$723

Cheapflights Fare Finder

 
Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Ontario to Key West that are best for you.

Fly from

Ontario

Fly to

Key West

Route

Depart

Return

Price

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

7:45 pm-5:12 pm

2 stops21h 27m

Key West

Wed 1/21

7:00 am-6:49 pm

2 stops11h 49m

$432

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 8/11

7:45 am-9:22 am

1 stop25h 37m

Key West

Fri 8/15

1:47 pm-9:23 pm

1 stop7h 36m

$448

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sat 9/13

5:17 pm-11:49 am

1 stop18h 32m

Key West

Sat 9/20

5:08 pm-11:59 am

1 stop18h 51m

$569

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Fri 1/23

7:00 am-12:46 pm

1 stop5h 46m

Key West

Fri 1/30

12:23 pm-8:18 pm

1 stop7h 55m

$599

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 1/6

5:40 pm-11:50 am

1 stop18h 10m

Key West

Wed 1/14

5:21 pm-10:45 pm

1 stop5h 24m

$618

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Fri 10/10

6:41 pm-8:06 pm

1 stop25h 25m

Key West

Thu 10/16

12:22 pm-11:31 am

1 stop23h 09m

$649

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Fri 9/12

6:15 am-5:15 pm

1 stop11h 00m

Key West

Sun 9/14

7:00 am-9:51 pm

1 stop14h 51m

$650

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Wed 9/10

9:00 pm-2:01 pm

2 stops17h 01m

Key West

Sat 9/13

3:05 pm-10:23 pm

1 stop7h 18m

$659

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Mon 8/18

6:15 am-5:27 pm

2 stops11h 12m

Key West

Thu 8/21

6:22 pm-11:59 pm

1 stop5h 37m

$663

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sat 9/13

9:50 am-8:15 am

1 stop22h 25m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ontario to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Key West

What is the cheapest month to book a flight from Region of Ontario to Key West?

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Key West (average of $328). Flying from Region of Ontario to Key West in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated July 31, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Ontario to Key West by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
4.0
Okay

Richard,Sep 2023

YYZ - ATL

Four hour delay (missing two screws). Seats in need of repair.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
4.0
Okay

Richard,Sep 2023

YYZ - ATL

Four hour delay (missing two screws). Seats in need of repair.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
4.0
Okay

Richard,Sep 2023

YYZ - ATL

Four hour delay (missing two screws). Seats in need of repair.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
4.0
Okay

Richard,Sep 2023

YYZ - ATL

Four hour delay (missing two screws). Seats in need of repair.
WestJet
7.2
Good
2,978 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
4.0
Okay

Richard,Sep 2023

YYZ - ATL

Four hour delay (missing two screws). Seats in need of repair.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Key West from Ontario?

    Key West (EYW), located 2.6 mi from the city center, is the airport you fly into when you book flights from Ontario to Key West.

  • What are the cheapest airlines to fly from Region of Ontario to Key West one-way?

    One-way options have recently been found by users for as low as $328 on Delta. Other airlines that offer cheap prices include WestJet from $375 and United Airlines from $420 one-way.

  • Can I find deals for flights from Ontario to Key West that include hotel bookings?

    Yes. In addition to deals on Ontario to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Key West.

  • Can I find deals for business class flights from Ontario to Key West?

    Yes. Cheapflights offers flight deals from Ontario to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Key West?

    Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Key West (average of $328). Flying from Region of Ontario to Key West in March is currently the most expensive (average of $492). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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