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Niagara Falls

$121+ Cheap flights from Key Largo, FL to Niagara Falls, Canada

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — YYZ
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Niagara Falls are usually found in August or December, booked 86 days in advance, depart on a Thursday or Friday and return on a Sunday

Cheap flight deals from Key Largo to Niagara Falls

Keep the following information in mind while searching for Key Largo to Niagara Falls flight deals. Data was last updated junio 12, 2025.

Round-trip from

$280
(Kiwi.com)

One-way from

$121
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$368
From Key Largo to Niagara Falls
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One-way flight from Key Largo to Niagara Falls
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Highest demand for flights based on searches. 10% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Key Largo to Niagara Falls

Cheapest flights from Key Largo to Niagara Falls
Explore the most affordable flight options available from Key Largo to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Flightnetwork deal was found by Cheapflights users on 6/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/1411:50 amMIA - YYZ
Nonstop3h 16mAir Canada
sáb. 10/45:30 pmYYZ - MIA
Nonstop3h 18mAir Canada
Deal found 6/11$268
This Mytrip deal was found by Cheapflights users on 6/11. 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.
lun. 9/291:07 pmMIA - YYZ
1 stop23h 23mMultiple Airlines
mié. 10/14:00 pmYYZ - MIA
1 stop23h 32mMultiple Airlines
Deal found 6/11$272
This American Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 6/206:18 amMIA - YYZ
1 stop8h 37mAmerican Airlines
vie. 6/205:55 pmYYZ - MIA
Nonstop3h 15mAmerican Airlines
Deal found 6/11$305
This Delta deal was found by Cheapflights users on 6/10. 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.
vie. 6/205:30 amMIA - YYZ
1 stop4h 54mDelta
lun. 6/236:05 pmYYZ - MIA
1 stop5h 41mDelta
Deal found 6/10$332
This United Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 7/188:40 amMIA - YYZ
1 stop13h 56mUnited Airlines
vie. 8/86:10 amYYZ - MIA
1 stop16h 29mUnited Airlines
Deal found 6/11$358
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/46:00 amMIA - YYZ
2 stops15h 14mWestJet
lun. 7/76:30 amYYZ - MIA
2 stops16h 37mWestJet
Deal found 6/11$428

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo to Niagara Falls 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 junio 12, 2025.
Use the filters below to find and compare flights from Key Largo to Niagara Falls that are best for you.

Fly from

Key Largo

Fly to

Niagara Falls

Route

Depart

Return

Price

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

jue. 9/4

9:59 am-9:07 pm

1 stop11h 08m

Toronto Pearson Intl

dom. 9/7

4:00 pm-12:32 pm

1 stop20h 32m

$280

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

mar. 7/1

9:40 pm-12:59 am

Nonstop3h 19m

Toronto Pearson Intl

mar. 7/8

7:45 am-11:00 am

Nonstop3h 15m

$286

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

vie. 6/20

6:18 am-2:55 pm

1 stop8h 37m

Toronto Pearson Intl

vie. 6/20

5:55 pm-9:10 pm

Nonstop3h 15m

$305

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

vie. 6/20

5:30 am-10:24 am

1 stop4h 54m

Toronto Pearson Intl

lun. 6/23

6:05 pm-11:46 pm

1 stop5h 41m

$332

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

vie. 7/18

8:40 am-10:36 pm

1 stop13h 56m

Toronto Pearson Intl

vie. 8/8

6:10 am-10:39 pm

1 stop16h 29m

$358

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

vie. 7/4

6:00 am-9:14 pm

2 stops15h 14m

Toronto Pearson Intl

lun. 7/7

6:30 am-11:07 pm

2 stops16h 37m

$428

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

jue. 7/10

11:10 am-9:08 pm

1 stop9h 58m

$121

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

jue. 6/26

9:40 pm-12:59 am

Nonstop3h 19m

$123

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

mié. 9/10

11:12 am-5:59 pm

1 stop6h 47m

$138

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

vie. 6/20

2:22 pm-10:23 pm

1 stop8h 01m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 15 results
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Best time to book a flight from Key Largo to Niagara Falls

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Niagara Falls. Price data was last updated on June 9, 2025.

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to Niagara Falls. 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 Key Largo to Niagara Falls?

Currently, January is the cheapest month in which you can book a flight from Key Largo to Niagara Falls (average of $243). Flying from Key Largo to Niagara Falls in July is currently the most expensive (average of $353). 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 KE9 to NI4?

Find hourly flight availability from Key Largo to Niagara Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

When flying from Key Largo to Niagara Falls, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

Weekly flight availability from Key Largo to Niagara Falls

Explore weekly flight availability from Key Largo to Niagara Falls. 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 junio 12, 2025.

The most flights from KE9 to NI4 are scheduled on a Wednesday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Niagara Falls by month

Plan your trip to Niagara Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Niagara Falls ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Niagara Falls when rainfall is around 2.0 in.

Temperature in Niagara Falls by month

Plan your trip to Niagara Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Niagara Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Niagara Falls

Get insights into the airlines that provide service to Niagara Falls. 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 Niagara Falls. Reviews last updated junio 12, 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Key Largo to Niagara Falls have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

Related info for your journey

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

  • What are the cheapest airlines to fly from Key Largo to Niagara Falls one-way?

    One-way options have recently been found by users for as low as $123 on Air Canada. Other airlines that offer cheap prices include Delta from $138 and American Airlines from $156 one-way.

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

    Consider GOL (89%), Air Canada Rouge (83%) or Porter Airlines (81%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Niagara Falls.

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

    Looking for the cheapest flight from Key Largo to Niagara Falls? While on average our users pay $1,202, our data indicates the cheapest price to be $111. The most popular route (Miami - Toronto Pearson Intl), is priced around $266.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Niagara Falls (average of $243). Flying from Key Largo to Niagara Falls in July is currently the most expensive (average of $353). 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.

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Top 7 airlines flying from Key Largo to Niagara Falls

Discover the top 7 airlines that operate flights from Key Largo to Niagara Falls. 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 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapest$22Average$147FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$77Average$273FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$81Average$241FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$89Average$265FlexibilityNo cancel feeOn-time50%
WestJetCheapest$96Average$306FlexibilityNo cancel feeOn-time60%
DeltaCheapest$126Average$291FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$380FlexibilityNo cancel feeOn-time71%

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