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Cheap flights from Niagara Falls, ON to Key Largo from C$ 220

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
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

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

Find flight deals from Niagara Falls to Key Largo

Enter your travel dates to find the best prices.

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 4 November 2025.

Mon 15/129:40 a.m.YYZ - MIA
Nonstop3h 29mAir Transat
Wed 17/122:10 p.m.MIA - YYZ
Nonstop3h 20mAir Transat
Deal found 2/11C$ 336
Mon 17/119:40 a.m.YYZ - MIA
Nonstop3h 29mAir Transat
Fri 30/12:10 p.m.MIA - YYZ
Nonstop3h 20mAir Transat
Deal found 3/11C$ 357
Mon 15/129:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Thu 18/122:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 4/11C$ 361
Tue 30/129:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Wed 7/12:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 3/11C$ 364
Tue 16/129:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Thu 18/122:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 4/11C$ 366
Mon 15/129:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Mon 22/122:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 3/11C$ 368
Tue 16/129:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Sat 20/122:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 4/11C$ 369
Wed 17/129:40 a.m.YYZ - MIA
Nonstop3h 29mPorter Airlines
Tue 30/122:10 p.m.MIA - YYZ
Nonstop3h 20mPorter Airlines
Deal found 3/11C$ 373
Thu 4/122:15 p.m.YYZ - MIA
1 stop9h 42mMultiple Airlines
Sat 13/126:05 a.m.MIA - YYZ
2 stops17h 15mMultiple Airlines
Deal found 4/11C$ 380
Mon 1/129:40 a.m.YYZ - MIA
Nonstop3h 29mAir Transat
Mon 8/122:10 p.m.MIA - YYZ
Nonstop3h 20mAir Transat
Deal found 4/11C$ 382
Sun 7/129:40 a.m.YYZ - MIA
Nonstop3h 29mAir Transat
Tue 16/122:10 p.m.MIA - YYZ
Nonstop3h 20mAir Transat
Deal found 3/11C$ 386

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 4 November 2025.

Round-trip from

C$ 336

One-way from

C$ 220

Popular in

December

Cheapest in

June

Average price

C$ 505
Air Transat
  • Air Transat
  • 19/1-26/1
  • 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. 6% potential increase in price (C$ 41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 4 November 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

Mon 8/12

9:40 a.m.-1:09 p.m.

Nonstop3h 29m

Miami

Thu 15/1

2:10 p.m.-5:30 p.m.

Nonstop3h 20m

C$ 427

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Sat 22/11

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

1 stop12h 26m

Miami

Fri 28/11

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

Nonstop3h 21m

C$ 477

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Sat 31/1

7:15 a.m.-1:55 p.m.

1 stop6h 40m

Miami

Mon 9/2

2:10 p.m.-5:30 p.m.

Nonstop3h 20m

C$ 480

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Sun 16/11

9:40 a.m.-1:09 p.m.

Nonstop3h 29m

Miami

Fri 21/11

2:10 p.m.-5:30 p.m.

Nonstop3h 20m

C$ 481

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Tue 18/11

10:45 a.m.-4:57 p.m.

1 stop6h 12m

Miami

Tue 25/11

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

1 stop5h 43m

C$ 489

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Wed 3/12

12:23 p.m.-5:25 p.m.

1 stop5h 02m

Miami

Sat 6/12

6:00 a.m.-11:07 a.m.

1 stop5h 07m

C$ 489

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 5/12

6:12 p.m.-12:46 a.m.

1 stop6h 34m

Miami

Tue 9/12

10:32 a.m.-5:02 p.m.

1 stop6h 30m

C$ 489

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Mon 17/11

7:40 p.m.-11:14 a.m.

1 stop15h 34m

Miami

Mon 24/11

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

1 stop7h 48m

C$ 489

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Wed 31/12

9:30 a.m.-6:24 p.m.

1 stop8h 54m

Miami

Thu 8/1

7:25 a.m.-10:46 a.m.

Nonstop3h 21m

C$ 489

TorontoMiami

YYZ - MIA

YYZMIA

Toronto Pearson Intl

Fri 30/1

10:00 a.m.-4:22 p.m.

1 stop6h 22m

Miami

Mon 9/2

6:00 a.m.-11:48 a.m.

1 stop5h 48m

C$ 489

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 22 results
1
2
3

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 31 October 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, February is the cheapest month in which you can book a flight from Niagara Falls to Key Largo (average of C$ 91). Flying from Niagara Falls to Key Largo in August is currently the most expensive (average of C$ 177). 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 4 November 2025.

When flying from Niagara Falls to Key Largo, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 27% versus a flight in the afternoon.

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. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Niagara Falls to Key Largo

Explore weekly flight availability from Niagara Falls to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 November 2025.

The most flights from NI4 to KE9 are scheduled on a Friday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Niagara Falls to Key Largo?

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 4 November 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
8.0
Very good
387 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Porter Airlines
8.0
Very good
387 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
United Airlines
7.4
Good
8,998 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
American Airlines
7.2
Good
11,038 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
WestJet
7.2
Good
3,153 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air Canada
7.1
Good
10,400 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.

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?

    Air Transat, Porter Airlines, and United Airlines can get you from Niagara Falls to Key Largo in just under 3h 29m. Your travel time can differ by up to 3h 11m. 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 Porter Airlines (100%), Air Transat (100%) and Air Canada Rouge (78%).

  • 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$ 1,289, our data indicates the cheapest price to be C$ 195. The most popular route (Toronto Pearson Intl - Miami), is priced around C$ 336.

  • 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, February is the cheapest month in which you can book a flight from Niagara Falls to Key Largo (average of C$ 91). Flying from Niagara Falls to Key Largo in August is currently the most expensive (average of C$ 177). 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 4 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 103AverageC$ 338FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Flair AirlinesCheapestC$ 115AverageC$ 255FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
American AirlinesCheapestC$ 196AverageC$ 535FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 201AverageC$ 398FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 205AverageC$ 439FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 206AverageC$ 646FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 251AverageC$ 442FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 274AverageC$ 472FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJet EncoreCheapestC$ 529AverageC$ 805FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore flights
APG AirlinesCheapestC$ 636AverageC$ 685FlexibilityNo cancel feeOn-timeN/A
Search APG Airlines flights

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