HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Niagara Falls

$123+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — YYZ
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
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 August or July, booked 68 days in advance, depart on a Thursday or Tuesday and return on a Friday

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 May 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/312:15 pm
DEN
-
YYZ
1 stop8h 30m
WestJet
Fri 6/55:20 pm
YYZ
-
DEN
2 stops20h 00m
WestJet
Deal found 5/6$312
This FlightHub deal was found by Cheapflights users on 5/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1612:15 pm
DEN
-
YYZ
1 stop9h 55m
WestJet
Thu 6/186:30 pm
YYZ
-
DEN
1 stop18h 50m
WestJet
Deal found 5/10$329
This FlightHub deal was found by Cheapflights users on 5/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/312:15 pm
DEN
-
YYZ
1 stop8h 30m
WestJet
Thu 6/111:30 pm
YYZ
-
DEN
1 stop23h 50m
WestJet
Deal found 5/7$331
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/512:15 pm
DEN
-
YYZ
1 stop8h 30m
Multiple Airlines
Mon 6/812:55 pm
YYZ
-
DEN
1 stop12h 06m
Multiple Airlines
Deal found 5/8$340
This Trip.com deal was found by Cheapflights users on 5/9. 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.
Tue 6/2312:15 pm
DEN
-
YYZ
1 stop9h 55m
WestJet
Mon 6/2910:25 pm
YYZ
-
DEN
1 stop14h 55m
WestJet
Deal found 5/9$343
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/412:15 pm
DEN
-
YYZ
1 stop8h 30m
WestJet
Thu 6/116:30 pm
YYZ
-
DEN
1 stop18h 50m
WestJet
Deal found 5/7$344
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/212:15 pm
DEN
-
YYZ
1 stop8h 30m
Multiple Airlines
Fri 6/512:55 pm
YYZ
-
DEN
1 stop12h 06m
Multiple Airlines
Deal found 5/6$345
This Trip.com deal was found by Cheapflights users on 5/9. 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 6/2512:15 pm
DEN
-
YYZ
1 stop9h 55m
WestJet
Mon 6/2910:25 pm
YYZ
-
DEN
1 stop14h 55m
WestJet
Deal found 5/9$349
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/312:15 pm
DEN
-
YYZ
1 stop8h 30m
WestJet
Sat 6/1310:20 pm
YYZ
-
DEN
2 stops15h 00m
WestJet
Deal found 5/6$350

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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$312
(Trip.com)

One-way from

$123
(Justfly.com)

Popular in

February

Cheapest in

August

Average price

$600
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. 6% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 11, 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
Quickest round-trip

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 7/24

4:15 pm-9:32 pm

Nonstop3h 17m

Toronto Pearson Intl

Mon 7/27

10:45 am-12:30 pm

Nonstop3h 45m

$617

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Fri 7/31

4:15 pm-9:32 pm

Nonstop3h 17m

Toronto Pearson Intl

Sat 8/8

10:45 am-12:30 pm

Nonstop3h 45m

$617

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Mon 7/20

4:15 pm-9:32 pm

Nonstop3h 17m

Toronto Pearson Intl

Sat 7/25

10:45 am-12:30 pm

Nonstop3h 45m

$617

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 7/16

9:57 am-3:14 pm

Nonstop3h 17m

Toronto Pearson Intl

Sun 7/19

10:45 am-12:30 pm

Nonstop3h 45m

$623

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Wed 6/24

6:00 am-3:46 pm

1 stop7h 46m

Toronto Pearson Intl

Mon 6/29

10:45 am-12:30 pm

Nonstop3h 45m

$627

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 6/18

4:15 pm-9:32 pm

Nonstop3h 17m

Toronto Pearson Intl

Sat 6/20

1:00 pm-10:04 pm

1 stop11h 04m

$627

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 6/4

4:15 pm-9:32 pm

Nonstop3h 17m

Toronto Pearson Intl

Sun 6/7

6:10 am-10:15 pm

1 stop18h 05m

$627

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Tue 7/28

8:00 am-7:02 pm

1 stop9h 02m

Toronto Pearson Intl

Sun 8/2

10:45 am-12:30 pm

Nonstop3h 45m

$632

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Sun 6/28

7:40 am-3:46 pm

1 stop6h 06m

Toronto Pearson Intl

Sat 7/4

4:18 pm-6:03 pm

Nonstop3h 45m

$632
Cheapest one-way

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 5/14

6:20 pm-11:47 am

1 stop15h 27m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 18 resultsSorted by cheapest first
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

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 May 11, 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 May 11, 2026.

The most flights from DEN to NI4 are scheduled on a Wednesday (10 on average). You will have fewer flight options on Monday, 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?

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 May 11, 2026.
Get a feel of what it's like to fly with United Airlines,WestJet, andAir 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
9,699 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

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
9,699 reviews
United Airlines
7.4
Good
9,699 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

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.
WestJet
7.2
Good
3,332 reviews
United Airlines
7.4
Good
9,699 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

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
11,017 reviews
United Airlines
7.4
Good
9,699 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

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 3 different airlines.

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

    Airlines like United Airlines fly from Denver to Niagara Falls in about 3h 17m. The time it takes to get you to your destination is usually consistent. The distance from Denver to Niagara Falls is about 1312 mi. All flights are typically nonstop.

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

    One-way options have recently been found by users for as low as $175 on Air Canada. Other airlines that offer cheap prices include United Airlines from $193 and Delta from $218 one-way.

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

    Consider United Airlines (81%), Air Canada (76%) or Brussels Airlines (69%) 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 $1,337, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Denver Intl - Toronto Pearson Intl), you can expect to pay $362 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.

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 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
Colorado Springs to Ottawa flights
Denver to London flights
Aspen to Ottawa flights

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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$195Average$506FlexibilityNo cancel feeOn-time67%
WestJetCheapest$223Average$365FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$224Average$594FlexibilityNo 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.
Site
©2026 Cheapflights