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Cheap flights from Niagara Falls to Key Largo from C$ 205

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MIA
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Niagara Falls to Key Largo are usually found in June or April, booked 47 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Niagara Falls to Key Largo

Keep the following information in mind while searching for Niagara Falls to Key Largo flight deals. Data was last updated 17 September 2025.

Round-trip from

C$ 319

One-way from

C$ 205

Popular in

December

Cheapest in

June

Average price

C$ 447
Porter Airlines
  • Porter Airlines
  • 11/2-18/2
  • Nonstop
  • 6h 49m total
  • Niagara Falls to Key Largo
Search Deals
Porter Airlines
  • Porter Airlines
  • 15/12
  • Nonstop
  • 3h 29m total
  • Niagara Falls to Key Largo
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Niagara Falls to Key Largo

Cheapest flights from Niagara Falls to Key Largo
Explore the most affordable flight options available from Niagara Falls to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2025.

Fri 31/109:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Sat 8/112:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 15/9C$ 330
Sat 6/124:00 p.m.YYZ - MIA
1 stop19h 15mAvianca
Fri 19/122:25 p.m.MIA - YYZ
2 stops14h 50mAvianca
Deal found 17/9C$ 336
Sun 9/119:40 a.m.YYZ - MIA
Nonstop3h 29mMultiple Airlines
Mon 10/1111:28 a.m.MIA - YYZ
1 stop9h 39mMultiple Airlines
Deal found 14/9C$ 338
Fri 31/109:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Mon 3/112:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 15/9C$ 340
Fri 31/109:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Sun 2/112:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 15/9C$ 341
Sun 26/102:00 p.m.YYZ - MIA
1 stop8h 29mAir Canada
Sat 1/119:05 p.m.MIA - YYZ
Nonstop3h 21mAir Canada
Deal found 15/9C$ 345
Mon 3/119:40 a.m.YYZ - MIA
Nonstop3h 29mMultiple Airlines
Fri 7/1111:28 a.m.MIA - YYZ
1 stop9h 39mMultiple Airlines
Deal found 14/9C$ 347
Sun 26/109:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Sat 1/112:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 15/9C$ 348
Fri 31/109:40 a.m.YYZ - MIA
Nonstop3h 29mMultiple Airlines
Fri 7/1111:28 a.m.MIA - YYZ
1 stop9h 39mMultiple Airlines
Deal found 14/9C$ 349
Mon 10/119:40 a.m.YYZ - MIA
Nonstop3h 29mMultiple Airlines
Mon 17/1111:28 a.m.MIA - YYZ
1 stop9h 39mMultiple Airlines
Deal found 15/9C$ 365
Fri 31/1012:50 p.m.YYZ - MIA
2 stops11h 44mMultiple Airlines
Mon 3/116:00 a.m.MIA - YYZ
1 stop15h 07mMultiple Airlines
Deal found 15/9C$ 366

Cheapflights Fare Finder

 
Customize your flight search to find flights from Niagara Falls to Key Largo 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 17 September 2025.
Use the filters below to find and compare flights from Niagara Falls to Key Largo that are best for you.

Fly from

Niagara Falls

Fly to

Key Largo

Route

Depart

Return

Price

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 5/12

10:45 a.m.-11:56 p.m.

1 stop13h 11m

Miami

Mon 8/12

9:05 p.m.-12:26 a.m.

Nonstop3h 21m

C$ 389

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Sun 2/11

9:00 a.m.-6:17 p.m.

1 stop9h 17m

Miami

Sun 9/11

6:25 a.m.-10:37 p.m.

1 stop16h 12m

C$ 409

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Wed 26/11

6:10 a.m.-2:35 p.m.

1 stop8h 25m

Miami

Tue 2/12

4:55 p.m.-11:59 p.m.

1 stop7h 04m

C$ 409

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 31/10

12:45 p.m.-11:56 p.m.

1 stop11h 11m

Miami

Sat 8/11

9:05 p.m.-12:26 a.m.

Nonstop3h 21m

C$ 409

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Thu 30/10

10:45 a.m.-7:08 p.m.

1 stop8h 23m

Miami

Thu 6/11

6:05 a.m.-1:43 p.m.

1 stop7h 38m

C$ 409

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Sat 8/11

9:30 a.m.-4:45 p.m.

1 stop7h 15m

Miami

Tue 11/11

7:00 a.m.-4:02 p.m.

1 stop9h 02m

C$ 409

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 31/10

12:45 p.m.-11:56 p.m.

1 stop11h 11m

Miami

Tue 4/11

12:20 p.m.-3:40 p.m.

Nonstop3h 20m

C$ 409

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 14/11

2:57 p.m.-11:04 p.m.

1 stop8h 07m

Miami

Sun 16/11

6:05 a.m.-11:48 a.m.

1 stop5h 43m

C$ 420

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Mon 22/12

6:10 a.m.-10:40 p.m.

1 stop16h 30m

Miami

Tue 6/1

6:20 a.m.-10:37 p.m.

1 stop16h 17m

C$ 436

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 24/10

12:15 p.m.-9:27 p.m.

1 stop9h 12m

Miami

Fri 31/10

8:30 a.m.-5:19 p.m.

1 stop8h 49m

C$ 440

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 23 results
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2
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Best time to book a flight from Niagara Falls to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Niagara Falls 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 Niagara Falls to Key Largo

How far ahead should I book a flight from Niagara Falls to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Niagara Falls to Key Largo. Price data was last updated on 12 September 2025.

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Niagara Falls to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Niagara Falls to Key Largo?

Currently, April is the cheapest month in which you can book a flight from Niagara Falls to Key Largo (average of C$ 251). Flying from Niagara Falls to Key Largo in August is currently the most expensive (average of C$ 369). 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.

What is the cheapest time of day to fly from NI4 to KE9?

Find hourly flight availability from Niagara Falls to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Niagara Falls to Key Largo as you normally would.

What is the cheapest day to fly from Niagara Falls to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Niagara Falls to Key Largo. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Niagara Falls to Key Largo flight should consider departing on Monday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Largo. Reviews last updated 17 September 2025.
Read reviews from past customers who have flown Porter Airlines,United Airlines, andAmerican Airlines from Niagara Falls to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
365 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,926 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,095 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Entertainment

7.0

Food

7.6

Overall

7.9

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

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

  • How long is the flight from Niagara Falls to Key Largo?

    United Airlines and Delta can get you from Niagara Falls to Key Largo in just under 8h 25m. Your travel time can differ by up to 52m. Airlines will cover a distance of 1988 km. This flight may include one or multiple stops.

  • What are the most reliable airlines from Niagara Falls to Key Largo?

    The top 3 most reliable airlines when flying from Niagara Falls to Key Largo are British Airways (84%), American Airlines (68%) and GOL (68%).

  • What are the cheapest flights from Niagara Falls to Key Largo?

    Looking for the cheapest flight from Niagara Falls to Key Largo? While on average our users pay C$ 653, our data indicates the cheapest price to be C$ 229. The most popular route (Toronto Pearson Intl - Miami), is priced around C$ 321.

  • Can I find deals for flights from Niagara Falls to Key Largo that include hotel bookings?

    Yes. In addition to deals on Niagara Falls to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Niagara Falls to Key Largo?

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

  • Can I find deals for business class flights from Niagara Falls to Key Largo?

    Yes. Cheapflights offers flight deals from Niagara Falls to Key Largo 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 Niagara Falls to Key Largo?

    Currently, April is the cheapest month in which you can book a flight from Niagara Falls to Key Largo (average of C$ 251). Flying from Niagara Falls to Key Largo in August is currently the most expensive (average of C$ 369). 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

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Top 10 airlines flying from Niagara Falls to Key Largo

Discover the top 10 airlines that operate flights from Niagara Falls to Key Largo. 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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 114AverageC$ 266FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
Porter AirlinesCheapestC$ 127AverageC$ 329FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 163AverageC$ 637FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 192AverageC$ 522FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 200AverageC$ 429FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 201AverageC$ 390FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 246AverageC$ 435FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 268AverageC$ 462FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJet EncoreCheapestC$ 518AverageC$ 789FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore flights
APG AirlinesCheapestC$ 624AverageC$ 671FlexibilityNo cancel feeOn-timeN/A
Search APG 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 Niagara Falls to Key Largo?

Deals for Niagara Falls to Key Largo flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Niagara Falls to Key Largo?

Millions of users choose and trust Cheapflights to book the best flight deals from Niagara Falls to Key Largo for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Niagara Falls to Key Largo with no change fees?

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

Can Cheapflights notify me if prices for flights from Niagara Falls to Key Largo become cheaper?

Yes! Start tracking prices for Niagara Falls to Key Largo flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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