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Cheap flights from Ontario to Key West from C$ 240

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 14/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — EYW
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Ontario to Key West

Enter your travel dates to find the best prices.

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 30 October 2025.

Thu 11/125:15 p.m.YYZ - EYW
1 stop15h 00mMultiple Airlines
Thu 18/128:55 a.m.EYW - YYZ
1 stop15h 16mMultiple Airlines
Deal found 29/10C$ 482
Sat 13/128:20 p.m.YYZ - EYW
1 stop11h 55mMultiple Airlines
Sat 20/127:47 a.m.EYW - YYZ
2 stops12h 26mMultiple Airlines
Deal found 29/10C$ 522
Sun 14/128:00 p.m.YYZ - EYW
1 stop12h 15mMultiple Airlines
Sun 21/128:55 a.m.EYW - YYZ
1 stop26h 48mMultiple Airlines
Deal found 30/10C$ 526
Thu 4/122:20 p.m.YYZ - EYW
1 stop18h 57mMultiple Airlines
Mon 8/128:55 a.m.EYW - YYZ
1 stop15h 16mMultiple Airlines
Deal found 30/10C$ 542
Fri 19/1210:15 a.m.YUL - EYW
2 stops20h 52mMultiple Airlines
Fri 26/121:10 p.m.EYW - YUL
1 stop11h 20mMultiple Airlines
Deal found 28/10C$ 658
Sat 20/1210:15 a.m.YYZ - EYW
1 stop24h 04mMultiple Airlines
Tue 23/1212:20 p.m.EYW - YYZ
1 stop11h 00mMultiple Airlines
Deal found 29/10C$ 672
Tue 23/123:40 p.m.YYZ - EYW
1 stop21h 50mMultiple Airlines
Sun 28/128:55 a.m.EYW - YYZ
1 stop26h 48mMultiple Airlines
Deal found 29/10C$ 728
Sun 14/122:05 p.m.YTZ - EYW
3 stops23h 28mMultiple Airlines
Sun 21/1212:20 p.m.EYW - YTZ
2 stops20h 00mMultiple Airlines
Deal found 30/10C$ 822
Sat 13/1212:30 p.m.YTZ - EYW
3 stops22h 50mMultiple Airlines
Sat 20/126:33 p.m.EYW - YTZ
3 stops25h 22mMultiple Airlines
Deal found 29/10C$ 839
Fri 19/1212:40 p.m.YUL - EYW
1 stop7h 26mWestJet
Fri 26/127:25 a.m.EYW - YUL
1 stop9h 50mWestJet
Deal found 29/10C$ 957
Tue 23/122:05 p.m.YTZ - EYW
3 stops23h 25mMultiple Airlines
Sun 28/1212:20 p.m.EYW - YTZ
2 stops20h 00mMultiple Airlines
Deal found 29/10C$ 958
Fri 19/127:30 a.m.YUL - EYW
1 stop6h 17mAmerican Airlines
Fri 26/128:00 a.m.EYW - YUL
1 stop14h 39mAmerican Airlines
Deal found 28/10C$ 996

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 30 October 2025.

Round-trip from

C$ 457

One-way from

C$ 240

Popular in

June

Cheapest in

October

Average price

C$ 663
25/1-8/2
  • 25/1-8/2
  • 3 total stops
  • 39h 58m total
  • Ontario to Key West
Search Deals
14/12
  • 14/12
  • 1 total stop
  • 12h 15m total
  • Ontario to Key West
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 629,999 searches. Data last updated 30 October 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 26/1

8:00 a.m.-1:30 p.m.

1 stop29h 30m

Key West

Sun 8/2

9:46 a.m.-8:14 p.m.

2 stops10h 28m

C$ 457

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Tue 27/1

8:00 a.m.-1:30 p.m.

1 stop29h 30m

Key West

Sun 8/2

9:46 a.m.-8:14 p.m.

2 stops10h 28m

C$ 457

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sun 25/1

5:25 p.m.-1:30 p.m.

2 stops20h 05m

Key West

Tue 10/2

2:25 p.m.-4:28 p.m.

1 stop26h 03m

C$ 466

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Thu 11/12

5:15 p.m.-8:15 a.m.

1 stop15h 00m

Key West

Thu 18/12

8:55 a.m.-12:11 a.m.

1 stop15h 16m

C$ 482

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Mon 26/1

6:45 a.m.-1:30 p.m.

1 stop6h 45m

Key West

Fri 6/2

1:06 p.m.-8:14 p.m.

2 stops31h 08m

C$ 499

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sun 25/1

8:00 a.m.-1:30 p.m.

1 stop29h 30m

Key West

Fri 6/2

1:06 p.m.-12:30 a.m.

1 stop11h 24m

C$ 500

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sun 25/1

6:45 a.m.-1:30 p.m.

1 stop6h 45m

Key West

Mon 9/2

1:06 p.m.-8:14 p.m.

2 stops31h 08m

C$ 507

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sat 13/12

8:20 p.m.-8:15 a.m.

1 stop11h 55m

Key West

Sat 20/12

7:47 a.m.-8:13 p.m.

2 stops12h 26m

C$ 522

TorontoKey West

YYZ - EYW

YYZEYW

Toronto Pearson Intl

Sun 14/12

8:00 p.m.-8:15 a.m.

1 stop12h 15m

Key West

Sun 21/12

8:55 a.m.-11:43 a.m.

1 stop26h 48m

C$ 526

MontrealKey West

YUL - EYW

YULEYW

Montreal Pierre Elliott Trudeau Intl

Sat 24/1

5:25 p.m.-9:06 a.m.

2 stops15h 41m

Key West

Tue 10/2

2:25 p.m.-4:28 p.m.

1 stop26h 03m

C$ 535

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

Showing 1-10 of 35 results
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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 time of day to fly from ON to EYW?

Find hourly flight availability from Ontario to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2025.

When flying from Region of Ontario to Key West, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 61% versus a flight in the afternoon.

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?

    If you book a flight to Key West from Ontario, you will be flying to Key West, which is the city’s only airport. Key West (EYW) is located 4.2 km from the centre of Key West.

  • How long is the flight from Region of Ontario to Key West?

    United Airlines can get you from Region of Ontario to Key West in just under 12h 46m. Your travel time can differ by up to . Airlines will cover a distance of 2054 km.

  • What are the most popular routes from Region of Ontario to Key West?

    Most travellers choose Toronto Pearson Intl - Key West, Toronto Island - Key West or Montreal Pierre Elliott Trudeau Intl - Key West when deciding on the best route from Region of Ontario to Key West.

  • 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.

See more FAQs

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Alternative routes for Ontario to Key West

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Ontario to Key West

Discover the top 3 airlines that operate flights from Ontario to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 684AverageC$ 799FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 795AverageC$ 960FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 828AverageC$ 984FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Key West?

Cheapflights makes it easy to find Ontario to Key West flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Key West?

Cheapflights helps you find that perfect flight to Key West from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to Key West with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Key West flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ontario to Key West become cheaper?

Yes, Cheapflights offers price alerts on Ontario to Key West flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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