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Cheap flights from Buffalo to Denver from C$ 103

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 19/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — DEN
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Buffalo to Denver Intl are usually found in August or September, booked 65 days in advance, depart on a Friday or Wednesday and return on a Monday

Cheap flight deals from Buffalo to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Round-trip from

C$ 209

One-way from

C$ 103

Popular in

December

Cheapest in

August

Average price

C$ 381

Good round-trip deal

C$ 329 or less

Good one-way deal

C$ 221 or less
United Airlines
  • United Airlines
  • 22/10-25/10
  • Nonstop
  • 6h 52m total
  • Buffalo to Denver
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United Airlines
  • United Airlines
  • 29/10
  • Nonstop
  • 3h 46m total
  • Buffalo to Denver
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Buffalo to Denver Intl.
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Price to beat on a one-way flight from Buffalo to Denver Intl.
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Find flight deals from Buffalo to Denver

Cheapest flights from Buffalo to Denver
Explore the most affordable flight options available from Buffalo to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Wed 22/108:25 a.m.BUF - DEN
Nonstop3h 36mUnited Airlines
Sat 25/105:30 p.m.DEN - BUF
Nonstop3h 16mUnited Airlines
Deal found 11/9C$ 209
Wed 1/108:25 a.m.BUF - DEN
Nonstop3h 36mUnited Airlines
Mon 6/105:30 p.m.DEN - BUF
Nonstop3h 16mUnited Airlines
Deal found 10/9C$ 226
Sat 25/104:00 p.m.BUF - DEN
1 stop7h 55mAmerican Airlines
Tue 28/102:04 p.m.DEN - BUF
1 stop7h 31mAmerican Airlines
Deal found 10/9C$ 231
Thu 2/108:25 a.m.BUF - DEN
Nonstop3h 36mUnited Airlines
Sun 5/105:30 p.m.DEN - BUF
Nonstop3h 16mUnited Airlines
Deal found 11/9C$ 248
Thu 2/106:22 p.m.BUF - DEN
1 stop26h 56mFrontier
Sat 4/1012:04 a.m.DEN - BUF
1 stop15h 23mFrontier
Deal found 10/9C$ 254
Sat 18/108:25 a.m.BUF - DEN
Nonstop3h 36mUnited Airlines
Mon 20/105:30 p.m.DEN - BUF
Nonstop3h 16mUnited Airlines
Deal found 10/9C$ 279
Fri 24/106:02 p.m.BUF - DEN
1 stop6h 03mAmerican Airlines
Tue 28/102:48 p.m.DEN - BUF
1 stop5h 40mAmerican Airlines
Deal found 10/9C$ 306
Tue 21/108:25 a.m.BUF - DEN
Nonstop3h 36mUnited Airlines
Tue 28/105:38 p.m.DEN - BUF
Nonstop3h 14mUnited Airlines
Deal found 11/9C$ 315
Fri 14/113:40 p.m.BUF - DEN
1 stop6h 05mSouthwest
Sun 16/119:55 a.m.DEN - BUF
Nonstop3h 05mSouthwest
Deal found 11/9C$ 316
Fri 12/912:17 p.m.BUF - DEN
1 stop22h 41mFrontier
Sat 27/911:40 a.m.DEN - BUF
1 stop21h 42mFrontier
Deal found 9/9C$ 320

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo 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 11 September 2025.
Use the filters below to find and compare flights from Buffalo to Denver that are best for you.

Fly from

Buffalo

Fly to

Denver

Route

Depart

Return

Price

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 14/11

8:04 a.m.-9:50 a.m.

Nonstop3h 46m

Denver Intl

Sun 16/11

5:38 p.m.-10:52 p.m.

Nonstop3h 14m

C$ 248

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 14/11

3:40 p.m.-7:45 p.m.

1 stop6h 05m

Denver Intl

Sun 16/11

9:55 a.m.-3:00 p.m.

Nonstop3h 05m

C$ 316

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 21/10

2:35 p.m.-8:58 p.m.

1 stop8h 23m

Denver Intl

Sat 25/10

3:45 p.m.-10:52 p.m.

1 stop5h 07m

C$ 328

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 21/10

4:35 p.m.-9:41 p.m.

1 stop7h 06m

Denver Intl

Fri 24/10

5:45 a.m.-3:16 p.m.

1 stop7h 31m

C$ 328

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 25/10

6:20 a.m.-10:11 a.m.

1 stop5h 51m

Denver Intl

Sat 25/10

3:45 p.m.-10:52 p.m.

1 stop5h 07m

C$ 328

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 24/10

7:30 p.m.-11:59 p.m.

1 stop6h 29m

Denver Intl

Mon 27/10

11:59 p.m.-10:31 a.m.

1 stop8h 32m

C$ 328

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 7/11

3:57 p.m.-9:41 p.m.

1 stop7h 44m

Denver Intl

Mon 10/11

11:59 p.m.-10:37 a.m.

1 stop8h 38m

C$ 328

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 25/10

7:00 a.m.-8:40 a.m.

Nonstop3h 40m

Denver Intl

Tue 28/10

10:20 a.m.-3:20 p.m.

Nonstop3h 00m

C$ 338

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 5/11

8:30 a.m.-10:16 a.m.

Nonstop3h 46m

Denver Intl

Sat 8/11

5:38 p.m.-10:52 p.m.

Nonstop3h 14m

C$ 346

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 6/11

8:00 p.m.-11:15 p.m.

1 stop5h 15m

Denver Intl

Sun 9/11

9:55 a.m.-3:00 p.m.

Nonstop3h 05m

C$ 358

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 21 results
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Best time to book a flight from Buffalo to Denver

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

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Denver. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to Denver, you should look to book at least 65 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 Buffalo to Denver?

Currently, August is the cheapest month in which you can book a flight from Buffalo to Denver (average of C$ 320). Flying from Buffalo to Denver in December is currently the most expensive (average of C$ 484). 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 BUF to DEN?

Find hourly flight availability from Buffalo 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 11 September 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 38% on flights from Buffalo to Denver by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Buffalo to Denver?

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Denver. Price data was last updated on 7 September 2025.

Travelers seeking maximum savings on their Buffalo to Denver flight should consider departing on Monday evenings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 11 September 2025.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Buffalo to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Buffalo to Denver?

    If you wish to fly to Denver from Buffalo, then you need to book flights from Buffalo to Denver Intl. There is 1 flight from Buffalo (BUF) to Denver Intl (DEN) per day to choose from. Flights to Denver from Buffalo are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 3h 25m is how long a nonstop flight from Buffalo to Denver Intl typically takes.

  • How popular is this Buffalo to Denver flight route?

    This flight path from Buffalo to Denver Intl was viewed by 287 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Buffalo to Denver?

    There are many flights that can get you from Buffalo to Denver in 3h 46m. Fly via United Airlines, Southwest, or Delta to get the fastest option. The distance between Buffalo and Denver is about 2181 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Buffalo to Denver round-trip?

    Cheapflights users have booked flights from Buffalo to Denver round-trip from C$ 170. Other airlines that can offer you cheap pricing are Frontier, from C$ 207, and United Airlines, from C$ 250. You may be able to fly from Buffalo to Denver for 62% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Buffalo to Denver?

    No one likes to see their flight delayed. When booking a flight from Buffalo to Denver consider choosing United Airlines (89%), Southwest (80%) or Frontier (64%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Buffalo to Denver?

    The cheapest flight price from Buffalo to Denver is C$ 151. On average you can expect to pay C$ 330. The most popular route, (Buffalo - Denver Intl), can usually be booked for C$ 247.

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

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

  • How can I find direct flights from Buffalo to Denver?

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

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

    Yes. Cheapflights offers flight deals from Buffalo 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 Buffalo to Denver?

    Currently, August is the cheapest month in which you can book a flight from Buffalo to Denver (average of C$ 320). Flying from Buffalo to Denver in December is currently the most expensive (average of C$ 484). 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 5 airlines flying from Buffalo to Denver

Discover the top 5 airlines that operate flights from Buffalo 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 170AverageC$ 382FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 207AverageC$ 304FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapestC$ 250AverageC$ 386FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 282AverageC$ 392FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
SouthwestCheapestC$ 384AverageC$ 561FlexibilityNo cancel feeOn-time63%
Search Southwest flights

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How does Cheapflights help users find flights from Buffalo to Denver?

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