HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Niagara Falls

$105+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — YYZ
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to Niagara Falls with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Key Largo to Niagara Falls are usually found in August or April, booked 42 days in advance, depart on a Thursday or Friday and return on a Wednesday

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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$222
(Trip.com)

One-way from

$105
(Kiwi.com)

Popular in

September

Cheapest in

August

Average price

$224
Provider with most accurate pricing for Miami-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Toronto (YTO) flights.
Search Deals
From Key Largo to Niagara Falls
Search Deals
One-way flight from Key Largo to Niagara Falls
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 2, 2025.

This Trip.com deal was found by Cheapflights users on 3/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/172:05 pmMIA - YYZ
Nonstop3h 25mPorter Airlines
Sun 4/209:40 amYYZ - MIA
Nonstop3h 25mPorter Airlines
Deal found 3/31$222
This Flightnetwork deal was found by Cheapflights users on 4/1. 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.
Thu 5/2211:55 amMIA - YYZ
Nonstop3h 22mAir Canada
Mon 5/265:30 pmYYZ - MIA
Nonstop3h 19mAir Canada
Deal found 4/1$241
This Kiwi.com deal was found by Cheapflights users on 4/1. 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.
Fri 5/98:53 amMIA - YYZ
1 stop27h 37mMultiple Airlines
Tue 5/137:15 amYYZ - MIA
1 stop5h 51mMultiple Airlines
Deal found 4/1$244
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 5/18:26 pmMIA - YYZ
Nonstop3h 19mAmerican Airlines
Fri 5/306:00 amYYZ - MIA
Nonstop3h 30mAmerican Airlines
Deal found 4/1$271
This Delta deal was found by Cheapflights users on 4/1. 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.
Sat 6/145:35 amMIA - YYZ
1 stop4h 50mDelta
Sat 6/2111:40 amYYZ - MIA
1 stop6h 33mDelta
Deal found 4/1$290
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Tue 4/154:07 pmMIA - YYZ
1 stop7h 51mUnited Airlines
Tue 4/223:00 pmYYZ - MIA
1 stop6h 56mUnited Airlines
Deal found 4/1$305
This Kiwi.com deal was found by Cheapflights users on 4/1. 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.
Thu 5/223:59 pmMIA - YYZ
1 stop5h 57mWestJet
Mon 5/266:30 pmYYZ - MIA
2 stops15h 01mWestJet
Deal found 4/1$352

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 April 2, 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

Thu 4/17

2:05 pm-5:30 pm

Nonstop3h 25m

Toronto Pearson Intl

Sun 4/20

9:40 am-1:05 pm

Nonstop3h 25m

$222

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Thu 5/22

11:55 am-3:17 pm

Nonstop3h 22m

Toronto Pearson Intl

Mon 5/26

5:30 pm-8:49 pm

Nonstop3h 19m

$241

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Fri 5/9

8:53 am-12:30 pm

1 stop27h 37m

Toronto Pearson Intl

Tue 5/13

7:15 am-1:06 pm

1 stop5h 51m

$244

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Wed 4/23

7:00 am-12:12 pm

1 stop5h 12m

Toronto Pearson Intl

Wed 4/30

6:15 am-1:50 pm

1 stop7h 35m

$268

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Thu 5/1

8:26 pm-11:45 pm

Nonstop3h 19m

Toronto Pearson Intl

Fri 5/30

6:00 am-9:30 am

Nonstop3h 30m

$271

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Tue 4/15

4:07 pm-11:58 pm

1 stop7h 51m

Toronto Pearson Intl

Tue 4/22

3:00 pm-9:56 pm

1 stop6h 56m

$305

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Thu 5/22

3:59 pm-9:56 pm

1 stop5h 57m

Toronto Pearson Intl

Mon 5/26

6:30 pm-9:31 am

2 stops15h 01m

$352

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Fri 5/2

8:53 am-12:30 pm

1 stop27h 37m

$105

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Tue 5/20

3:19 pm-10:54 pm

1 stop7h 35m

$107

MiamiToronto

MIA - YYZ

MIAYYZ

Miami

Thu 4/17

2:05 pm-5:30 pm

Nonstop3h 25m

$108

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 19 results
1
2

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 March 28, 2025.

Booking 42 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 $359). 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 April 2, 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 April 2, 2025.

The most flights from KE9 to NI4 are scheduled on a Tuesday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 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 April 2, 2025.
See what other customers who have flown with Caribbean Airlines, Alaska Airlines and Delta 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.
Caribbean Airlines
8.2
Very good
149 reviews

Entertainment

6.8

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

6.8

Overall

8.2

Reviews

1 / 9
6.0
Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.
Caribbean Airlines
8.2
Very good
149 reviews
Caribbean Airlines
8.2
Very good
149 reviews

Entertainment

6.8

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

6.8

Overall

8.2

Reviews

1 / 9
6.0
Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.
Alaska Airlines
8.0
Very good
9,823 reviews
Caribbean Airlines
8.2
Very good
149 reviews

Entertainment

6.8

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

6.8

Overall

8.2

Reviews

1 / 9
6.0
Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.
Delta
8.0
Very good
7,899 reviews
Caribbean Airlines
8.2
Very good
149 reviews

Entertainment

6.8

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

6.8

Overall

8.2

Reviews

1 / 9
6.0
Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.
Porter Airlines
7.9
Good
278 reviews
Caribbean Airlines
8.2
Very good
149 reviews

Entertainment

6.8

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

6.8

Overall

8.2

Reviews

1 / 9
6.0
Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.
Air Transat
7.8
Good
381 reviews
Caribbean Airlines
8.2
Very good
149 reviews

Entertainment

6.8

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

6.8

Overall

8.2

Reviews

1 / 9
6.0
Good

Anonymous,Mar 2025

JFK - GEO

Air hostesses were friendly. There should be more options for tea.

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 $107 on Delta. Other airlines that offer cheap prices include Porter Airlines from $108 and Air Canada from $111 one-way.

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

    Consider GOL (86%), American Airlines (69%) or Porter Airlines (64%) 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 $1,951, our data indicates the cheapest price to be $108. The most popular route (Miami - Toronto Pearson Intl), is priced around $222.

  • 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 $359). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Key Largo to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.
Fort Lauderdale to Pearson Intl flights
Orlando to Pearson Intl flights
Fort Lauderdale to Pierre Elliott Trudeau Intl flights
Tampa to Pearson Intl flights
Miami to Pearson Intl flights
Orlando to Pierre Elliott Trudeau Intl flights
Fort Lauderdale to Toronto Island flights
Miami to Pierre Elliott Trudeau Intl flights
Orlando to Toronto Island flights
Tampa to Toronto Island flights
Jacksonville to Pearson Intl flights
Tampa to Pierre Elliott Trudeau Intl flights
Miami to Toronto Island flights
West Palm Beach to Pearson Intl flights
Fort Myers to Pearson Intl flights
Orlando to Ottawa flights
West Palm Beach to Pierre Elliott Trudeau Intl flights
Fort Lauderdale to Ottawa flights
Fort Myers to Pierre Elliott Trudeau Intl flights
Sarasota to Pearson Intl flights
Tampa to Ottawa flights
Jacksonville to Pierre Elliott Trudeau Intl flights
Gainesville to Pierre Elliott Trudeau Intl flights
Valparaiso to Pierre Elliott Trudeau Intl flights
Jacksonville to Toronto Island flights
West Palm Beach to Toronto Island flights
Miami to Ottawa flights
Tallahassee to Pearson Intl flights
Pensacola to Pierre Elliott Trudeau Intl flights
Sarasota to Pierre Elliott Trudeau Intl flights
Melbourne to Pierre Elliott Trudeau Intl flights
Orlando to London flights
Jacksonville to Ottawa flights
Panama City to Pierre Elliott Trudeau Intl flights
West Palm Beach to Ottawa flights
Daytona Beach to Pearson Intl flights
Gainesville to Pearson Intl flights
Melbourne to Pearson Intl flights
Daytona Beach to Pierre Elliott Trudeau Intl flights
Pensacola to Pearson Intl flights
Fort Lauderdale to Hamilton flights
Tallahassee to Pierre Elliott Trudeau Intl flights
Tampa to London flights
Orlando to Hamilton flights
Fort Myers to Sudbury flights
Tampa to Windsor flights
Fort Lauderdale to Rouyn-Noranda flights
Panama City to Pearson Intl flights
Sarasota to Ottawa flights

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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapest$22Average$150FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$79Average$289FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$89Average$265FlexibilityNo cancel feeOn-time50%
Porter AirlinesCheapest$91Average$253FlexibilityNo cancel feeOn-time52%
WestJetCheapest$101Average$310FlexibilityNo cancel feeOn-time60%
DeltaCheapest$130Average$343FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$145Average$408FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.