HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Niagara Falls

$89+ Cheap flights from Denver (DEN) to Niagara Falls, ON, 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YYZ
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver 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 Denver Intl to Niagara Falls are usually found in February or March, booked 46 days in advance, depart on a Thursday or Tuesday and return on a Friday

Cheap flight deals from Denver to Niagara Falls

Keep the following information in mind while searching for Denver to Niagara Falls flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$312
(Kiwi.com)

One-way from

$89
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$532
Provider with most accurate pricing for Denver Intl-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Toronto (YTO) flights.
Search Deals
From Denver Intl to Niagara Falls
Search Deals
One-way flight from Denver Intl to Niagara Falls
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Denver to Niagara Falls

Cheapest flights from Denver to Niagara Falls
Explore the most affordable flight options available from Denver to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Tue 11/1112:59 amDEN - YYZ
2 stops35h 41mMultiple Airlines
Mon 11/177:55 pmYYZ - DEN
1 stop10h 04mMultiple Airlines
Deal found 10/28$312
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 12/1211:59 pmDEN - YYZ
1 stop9h 44mMultiple Airlines
Sun 12/148:00 pmYYZ - DEN
1 stop9h 58mMultiple Airlines
Deal found 10/29$314
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Sat 12/611:59 pmDEN - YYZ
1 stop12h 21mMultiple Airlines
Tue 12/97:15 amYYZ - DEN
1 stop14h 58mMultiple Airlines
Deal found 10/29$316
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Tue 12/166:30 amDEN - YYZ
1 stop11h 25mMultiple Airlines
Mon 1/58:00 pmYYZ - DEN
1 stop9h 58mMultiple Airlines
Deal found 10/30$318
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/1411:04 amDEN - YYZ
1 stop8h 03mMultiple Airlines
Mon 11/177:55 pmYYZ - DEN
1 stop10h 04mMultiple Airlines
Deal found 10/28$321
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Sun 11/1612:16 amDEN - YYZ
2 stops18h 51mMultiple Airlines
Wed 11/194:45 pmYYZ - DEN
1 stop26h 02mMultiple Airlines
Deal found 10/28$322
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Tue 12/166:30 amDEN - YYZ
1 stop11h 25mMultiple Airlines
Tue 1/69:35 amYYZ - DEN
1 stop12h 06mMultiple Airlines
Deal found 10/30$323
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Mon 11/1711:04 amDEN - YYZ
1 stop8h 03mMultiple Airlines
Tue 11/189:35 amYYZ - DEN
1 stop15h 20mMultiple Airlines
Deal found 10/29$325
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/1411:04 amDEN - YYZ
1 stop8h 03mMultiple Airlines
Thu 11/208:45 pmYYZ - DEN
2 stops22h 02mMultiple Airlines
Deal found 10/28$326
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/1411:04 amDEN - YYZ
1 stop8h 03mMultiple Airlines
Fri 11/218:45 pmYYZ - DEN
2 stops22h 02mMultiple Airlines
Deal found 10/28$327
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 12/411:59 pmDEN - YYZ
1 stop18h 01mMultiple Airlines
Sun 12/77:15 amYYZ - DEN
2 stops17h 49mMultiple Airlines
Deal found 10/29$328
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 12/1711:59 pmDEN - YYZ
1 stop12h 21mMultiple Airlines
Sun 1/48:00 pmYYZ - DEN
1 stop9h 58mMultiple Airlines
Deal found 10/28$329

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 October 30, 2025.
Use the filters below to find and compare flights from Denver to Niagara Falls that are best for you.

Fly from

Denver

Fly to

Niagara Falls

Route

Depart

Return

Price

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Mon 11/17

6:46 pm-3:35 pm

2 stops18h 49m

Toronto Pearson Intl

Wed 11/19

4:45 pm-7:06 pm

2 stops28h 21m

$383

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Tue 11/18

11:31 am-3:35 pm

2 stops26h 04m

Toronto Pearson Intl

Fri 11/21

4:45 pm-11:59 pm

1 stop9h 14m

$408

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Wed 11/19

8:02 pm-3:35 pm

1 stop17h 33m

Toronto Pearson Intl

Fri 11/21

4:45 pm-11:59 pm

1 stop9h 14m

$410

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Wed 1/7

5:09 pm-3:35 pm

1 stop20h 26m

Toronto Pearson Intl

Sat 1/10

4:45 pm-10:53 am

2 stops20h 08m

$424

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 12/5

12:50 am-11:07 am

1 stop8h 17m

Toronto Pearson Intl

Wed 12/10

7:44 am-4:49 pm

1 stop11h 05m

$502

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Sat 12/6

7:50 am-4:02 pm

1 stop6h 12m

Toronto Pearson Intl

Tue 12/9

4:10 pm-6:06 pm

Nonstop3h 56m

$509

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Wed 11/19

11:46 am-9:24 pm

1 stop7h 38m

Toronto Pearson Intl

Thu 11/20

4:10 pm-6:05 pm

Nonstop3h 55m

$510

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Sat 12/6

9:54 am-3:02 pm

Nonstop3h 08m

Toronto Pearson Intl

Sun 12/7

7:40 pm-12:15 am

1 stop6h 35m

$515

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 12/5

9:54 am-3:02 pm

Nonstop3h 08m

Toronto Pearson Intl

Mon 12/8

7:40 pm-12:15 am

1 stop6h 35m

$515

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Mon 12/1

5:30 pm-10:41 pm

Nonstop3h 11m

Toronto Pearson Intl

Sun 12/7

8:30 am-10:23 am

Nonstop3h 53m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 19 results
1
2

Best time to book a flight from Denver to Niagara Falls

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Niagara Falls. Price data was last updated on October 24, 2025.

The price you pay for your flight from Denver to Niagara Falls may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, June is the cheapest month in which you can book a flight from Denver to Niagara Falls (average of $129). Flying from Denver to Niagara Falls in January is currently the most expensive (average of $246). 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 DEN to NI4?

Find hourly flight availability from Denver 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 October 30, 2025.

It’s optimal to fly from Denver to Niagara Falls in the morning. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the afternoon.

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 October 30, 2025.
Get a feel of what it's like to fly with United Airlines, WestJet, and Air Canada from Denver to Niagara Falls by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
WestJet
7.2
Good
3,152 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
Air Canada
7.1
Good
10,381 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

Related info for your journey

Find useful and relevant information for your journey from Denver 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 airport do you fly from for flights from Denver to Niagara Falls?

    If you book a flight to Niagara Falls from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 2 flights from Denver Intl to Niagara Falls per day from 3 different airlines.

  • How long is the flight from Denver to Niagara Falls?

    Airlines like Alaska Airlines and Delta fly from Denver to Niagara Falls in about 8h 17m. The time it takes to get you to your destination can typically vary by up to 10h 32m. The distance from Denver to Niagara Falls is about 1312 mi. This flight may include one or multiple stops.

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

    Consider Brussels Airlines (79%), Air Canada (77%) or United Airlines (76%) when booking your flight. These represent the most reliable airlines when flying from Denver to Niagara Falls.

  • What are the cheapest flights from Denver to Niagara Falls?

    While on average a flight from Denver to Niagara Falls is generally $629, our data shows the cheapest flight currently is $252. When looking at the most popular route, (Denver Intl - Toronto Pearson Intl), you can expect to pay $262 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver 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 Denver to Niagara Falls?

    Currently, June is the cheapest month in which you can book a flight from Denver to Niagara Falls (average of $129). Flying from Denver to Niagara Falls in January is currently the most expensive (average of $246). 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.

Top 3 airlines flying from Denver to Niagara Falls

Discover the top 3 airlines that operate flights from Denver 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$221Average$545FlexibilityNo cancel feeOn-time67%
WestJetCheapest$258Average$297FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$289Average$549FlexibilityNo cancel feeOn-time69%

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.