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Niagara Falls

$123+ Cheap flights from Denver (DEN) 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YYZ
Sep 13 — Sep 201
Sun 9/13
Sun 9/20
1 adult, Economy
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Find cheap flights from Denver to Niagara Falls with Cheapflights

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Cheapflights Tip: The best prices from Denver Intl to Niagara Falls are usually found in September or November, booked 68 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap 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 August 14, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/246:56 pm -
1 stop17h 59m
Mon 9/288:10 am -
1 stop25h 58m
Deal found 8/12$300
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/211:53 pm -
1 stop6h 02m
Mon 9/288:10 am -
1 stop25h 58m
Deal found 8/13$315
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/228:55 pm -
2 stops18h 00m
Mon 9/288:10 am -
1 stop15h 58m
Deal found 8/12$318
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/68:31 am -
1 stop11h 24m
Sat 9/126:00 am -
2 stops14h 15m
Deal found 8/13$324
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/68:31 am -
1 stop11h 24m
Sun 9/136:10 am -
2 stops31h 10m
Deal found 8/13$327
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/29:15 am -
2 stops13h 50m
Thu 9/104:45 pm -
1 stop26h 31m
Deal found 8/13$331
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/2512:15 pm -
1 stop8h 30m
Tue 9/291:30 pm -
2 stops32h 51m
Deal found 8/13$335
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/1610:38 am -
1 stop9h 17m
Tue 9/229:50 am -
1 stop24h 02m
Deal found 8/12$339

Find 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 August 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$300
(Kiwi.com)

One-way from

$123
(Kiwi.com)

Popular in

February

Cheapest in

September

Average price

$585
Provider with most accurate pricing for Denver Intl-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Toronto (YTO) flights.
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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. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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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 August 14, 2026.
Use the filters below to find and compare flights from Denver to Niagara Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Fri 10/9

6:10 am-5:19 pm

1 stop9h 09m

Toronto Pearson Intl

Mon 10/12

6:30 am-12:04 pm

1 stop7h 34m

$565

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Fri 10/23

12:59 pm-11:59 pm

1 stop9h 00m

Toronto Pearson Intl

Mon 10/26

12:10 pm-5:08 pm

1 stop6h 58m

$565

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Thu 10/15

7:00 am-5:18 pm

1 stop8h 18m

Toronto Pearson Intl

Sun 10/18

6:00 am-9:32 am

1 stop5h 32m

$576

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Tue 10/27

9:50 am-3:02 pm

Nonstop3h 12m

Toronto Pearson Intl

Sat 10/31

4:10 pm-6:04 pm

Nonstop3h 54m

$600
Quickest round-trip

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Thu 10/15

10:02 am-3:14 pm

Nonstop3h 12m

Toronto Pearson Intl

Mon 10/19

4:18 pm-5:56 pm

Nonstop3h 38m

$600

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Fri 9/11

11:15 am-7:37 pm

1 stop6h 22m

Toronto Pearson Intl

Fri 9/18

4:18 pm-5:56 pm

Nonstop3h 38m

$610

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Sat 9/26

4:17 pm-9:32 pm

Nonstop3h 15m

Toronto Pearson Intl

Sun 9/27

6:10 am-12:09 pm

1 stop7h 59m

$615

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Thu 9/17

4:16 pm-9:32 pm

Nonstop3h 16m

Toronto Pearson Intl

Sun 9/20

12:45 pm-7:33 pm

1 stop8h 48m

$615

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Thu 9/3

12:59 am-8:55 am

1 stop5h 56m

Toronto Pearson Intl

Mon 9/7

6:10 am-9:52 am

1 stop5h 42m

$622

DenverToronto

DEN Denver Intl - YYZ Toronto Pearson Intl

DENYYZ

Denver Intl

Tue 9/29

4:40 pm-11:59 pm

1 stop5h 19m

Toronto Pearson Intl

Sat 10/3

10:45 am-3:37 pm

1 stop6h 52m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 22 resultsSorted by cheapest first
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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

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 August 14, 2026.

When flying from Denver 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.

Weekly flight availability from Denver to Niagara Falls

Explore weekly flight availability from Denver 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 August 14, 2026.

The most flights from DEN to NI4 are scheduled on a Monday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (6 on average).

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

Airfare is below average for this route at the moment.
Denver to Niagara Falls flights typically cost between $479 and $645 in September.
The cheapest round-trip price found within the last 5 days was $300 on Multiple Airlines (Sep 24-Sep 28).

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 August 14, 2026.
Get a feel of what it's like to fly with United Airlines 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
10,108 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
10,108 reviews
United Airlines
7.4
Good
10,108 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Air Canada
7.1
Good
11,471 reviews
United Airlines
7.4
Good
10,108 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 9 flights from Denver Intl to Niagara Falls per day from 2 different airlines.

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

    Airlines like Delta and United Airlines fly from Denver to Niagara Falls in about 3h 12m. The time it takes to get you to your destination can typically vary by up to 5h 57m. 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 United Airlines (72%), Air Canada (66%) or Brussels Airlines (65%) 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 $1,311, our data shows the cheapest flight currently is $235. When looking at the most popular route, (Denver Intl - Toronto Pearson Intl), you can expect to pay $300 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.

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Alternative routes for Denver to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Pearson Intl flights
Denver to Hamilton flights
Denver to Ottawa flights
Denver to London flights
Colorado Springs to Ottawa flights
Aspen to Ottawa flights

Top 2 airlines flying from Denver to Niagara Falls

Discover the top 2 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 August 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$203Average$577FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$228Average$647FlexibilityNo cancel feeOn-time69%

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