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Cheap flights from Niagara Falls, ON to Denver from C$ 209

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DEN
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Niagara Falls to Denver Intl are usually found in August or April, booked 87 days in advance, depart on a Friday or Saturday and return on a Thursday

Cheap flight deals from Niagara Falls to Denver

Keep the following information in mind while searching for Niagara Falls to Denver flight deals. Data was last updated 3 November 2025.

Round-trip from

C$ 492

One-way from

C$ 209

Popular in

December

Cheapest in

August

Average price

C$ 632
8/12-13/12
  • 8/12-13/12
  • 3 total stops
  • 37h 13m total
  • Niagara Falls to Denver
Search Deals
8/1
  • 8/1
  • 1 total stop
  • 9h 58m total
  • Niagara Falls to Denver
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from Niagara Falls to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Niagara Falls to Denver
Explore the most affordable flight options available from Niagara Falls to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 November 2025.

Mon 8/1210:00 a.m.YYZ - DEN
1 stop16h 17mMultiple Airlines
Sat 13/1212:59 a.m.DEN - YYZ
2 stops20h 56mMultiple Airlines
Deal found 1/11C$ 492
Sun 9/114:00 p.m.YYZ - DEN
1 stop27h 44mMultiple Airlines
Mon 17/1111:04 a.m.DEN - YYZ
1 stop8h 03mMultiple Airlines
Deal found 30/10C$ 497
Mon 15/121:30 p.m.YYZ - DEN
2 stops16h 28mMultiple Airlines
Fri 19/127:00 a.m.DEN - YYZ
1 stop10h 55mMultiple Airlines
Deal found 31/10C$ 499
Sat 29/117:55 p.m.YYZ - DEN
1 stop10h 03mMultiple Airlines
Sat 6/1211:59 p.m.DEN - YYZ
1 stop12h 21mMultiple Airlines
Deal found 1/11C$ 500
Mon 17/117:55 p.m.YYZ - DEN
1 stop10h 04mMultiple Airlines
Fri 21/117:00 a.m.DEN - YYZ
1 stop21h 20mMultiple Airlines
Deal found 31/10C$ 502
Fri 21/112:50 p.m.YYZ - DEN
Nonstop3h 50mAir Canada
Thu 27/1111:15 a.m.DEN - YYZ
1 stop8h 29mAir Canada
Deal found 31/10C$ 503
Fri 28/117:55 p.m.YYZ - DEN
1 stop10h 03mMultiple Airlines
Fri 5/1211:59 p.m.DEN - YYZ
2 stops18h 14mMultiple Airlines
Deal found 31/10C$ 510
Wed 17/129:35 a.m.YYZ - DEN
1 stop20h 23mMultiple Airlines
Wed 24/1210:37 p.m.DEN - YYZ
1 stop19h 18mMultiple Airlines
Deal found 1/11C$ 516
Tue 2/129:35 a.m.YYZ - DEN
1 stop10h 53mMultiple Airlines
Wed 3/1212:59 a.m.DEN - YYZ
2 stops21h 12mMultiple Airlines
Deal found 31/10C$ 517
Fri 5/124:45 p.m.YYZ - DEN
1 stop27h 18mAlaska Airlines
Fri 12/126:00 a.m.DEN - YYZ
1 stop31h 35mAlaska Airlines
Deal found 31/10C$ 520

Cheapflights Fare Finder

 
Customize your flight search to find flights from Niagara Falls to Denver 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 629,999 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Niagara Falls to Denver that are best for you.

Fly from

Niagara Falls

Fly to

Denver

Route

Depart

Return

Price

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sat 13/12

3:15 p.m.-1:23 a.m.

1 stop12h 08m

Denver Intl

Fri 19/12

10:37 p.m.-7:55 p.m.

1 stop19h 18m

C$ 555

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Tue 3/3

4:45 p.m.-11:39 a.m.

1 stop20h 54m

Denver Intl

Wed 4/3

7:50 p.m.-3:35 p.m.

1 stop17h 45m

C$ 560

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sun 1/2

4:45 p.m.-12:38 p.m.

1 stop21h 53m

Denver Intl

Sun 8/2

12:34 p.m.-3:35 p.m.

2 stops25h 01m

C$ 562

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sun 1/2

2:50 p.m.-4:40 p.m.

Nonstop3h 50m

Denver Intl

Sun 8/2

11:15 a.m.-8:30 p.m.

1 stop7h 15m

C$ 573

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 20/11

7:55 p.m.-3:58 a.m.

1 stop10h 03m

Denver Intl

Wed 26/11

10:29 p.m.-7:55 p.m.

1 stop19h 26m

C$ 636

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 15/12

8:00 p.m.-3:58 a.m.

1 stop9h 58m

C$ 219

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Tue 16/12

7:15 a.m.-11:04 p.m.

1 stop17h 49m

C$ 221

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 23/2

10:00 a.m.-10:56 p.m.

2 stops14h 56m

C$ 226

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sun 7/12

8:00 p.m.-11:04 p.m.

1 stop29h 04m

C$ 254

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Wed 31/12

6:23 p.m.-10:08 a.m.

1 stop17h 45m

C$ 259

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 14 results
1
2

Best time to book a flight from Niagara Falls to Denver

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

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

Use this chart to determine the optimal time to book a round-trip flight from Niagara Falls to Denver. Price data was last updated on 31 October 2025.

To ensure you get the cheapest price possible for a flight from Niagara Falls to Denver, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, December is the cheapest month in which you can book a flight from Niagara Falls to Denver (average of C$ 308). Flying from Niagara Falls to Denver in October is currently the most expensive (average of C$ 454). 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 NI4 to DEN?

Find hourly flight availability from Niagara Falls to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 November 2025.

One of the essential ways to save on airfare from Niagara Falls to Denver is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 25% on airfare.

Weekly flight availability from Niagara Falls to Denver

Explore weekly flight availability from Niagara Falls to Denver. 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 3 November 2025.

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

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated 3 November 2025.
Read through reviews of airlines operating flights from Niagara Falls to Denver, such as United Airlines,WestJet, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,997 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
WestJet
7.2
Good
3,153 reviews
United Airlines
7.4
Good
8,997 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Air Canada
7.1
Good
10,392 reviews
United Airlines
7.4
Good
8,997 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Niagara Falls to Denver. 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 into for flights to Denver from Niagara Falls?

    Located just 29.7 km from the city centre, Denver Intl is the airport most travellers will use when flying to Denver from Niagara Falls. Booking flights from Niagara Falls to Denver Intl (DEN) should be relatively easy as there are 5 daily inbound flights from Niagara Falls from 3 different airlines.

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

    There are many flights that can get you from Niagara Falls to Denver in 20h 54m. Fly via Alaska Airlines to get the fastest option. Airlines will cover a distance of 2111 km.

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

    Consider United Airlines (73%), Air Canada (69%) or Brussels Airlines (67%) when booking your flight. These represent the most reliable airlines when flying from Niagara Falls to Denver.

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

    On average you can expect to pay C$ 2,013 for a flight from Niagara Falls to Denver. The cheapest flight overall is C$ 256 while the most popular route, (Toronto Pearson Intl - Denver Intl) is currently priced at C$ 395.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Niagara Falls to Denver (average of C$ 308). Flying from Niagara Falls to Denver in October is currently the most expensive (average of C$ 454). 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

Travelling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Golden
Westminster
Thornton

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Top 3 airlines flying from Niagara Falls to Denver

Discover the top 3 airlines that operate flights from Niagara Falls to Denver. 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 629,999 searches. Data last updated 3 November 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 263AverageC$ 437FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 472AverageC$ 700FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 523AverageC$ 741FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Niagara Falls to Denver?

When you search for this flight from Niagara Falls to Denver, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Niagara Falls to Denver?

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Can Cheapflights notify me if prices for flights from Niagara Falls to Denver become cheaper?

Yes! Start tracking prices for Niagara Falls to Denver flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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