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$118+ Cheap flights from Buffalo to Denver (BUF - DEN)

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — DEN
Jun 24 — Jul 11
Tue 6/24
Tue 7/1
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Denver Intl are usually found in September or August, booked 90 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 June 19, 2025.

Round-trip from

$169
(Frontier)

One-way from

$118
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$302

Good round-trip deal

$262 or less

Good one-way deal

$140 or less
From Buffalo to Denver Intl
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One-way flight from Buffalo to Denver Intl
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Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 19, 2025.

This Frontier deal was found by Cheapflights users on 6/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/191:39 pmBUF - DEN
Nonstop3h 43mFrontier
Mon 9/227:30 amDEN - BUF
Nonstop3h 13mFrontier
Deal found 6/17$169
This American Airlines deal was found by Cheapflights users on 6/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:25 amBUF - DEN
1 stop6h 59mAmerican Airlines
Tue 8/122:47 pmDEN - BUF
1 stop5h 47mAmerican Airlines
Deal found 6/17$211
This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/165:10 pmBUF - DEN
1 stop7h 45mDelta
Sun 8/1712:59 amDEN - BUF
1 stop7h 58mDelta
Deal found 6/19$237
This JetBlue deal was found by Cheapflights users on 6/18. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:00 amBUF - DEN
1 stop6h 40mJetBlue
Sun 10/2610:44 pmDEN - BUF
1 stop7h 45mJetBlue
Deal found 6/18$251
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2911:03 amBUF - DEN
1 stop8h 04mMultiple Airlines
Mon 9/87:30 amDEN - BUF
Nonstop3h 13mMultiple Airlines
Deal found 6/17$258
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/167:15 pmBUF - DEN
1 stop5h 55mSouthwest
Wed 7/237:45 pmDEN - BUF
Nonstop3h 05mSouthwest
Deal found 6/18$267
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:25 amBUF - DEN
Nonstop3h 36mUnited Airlines
Sun 11/25:30 pmDEN - BUF
Nonstop3h 15mUnited Airlines
Deal found 6/17$297
This Sun Country Air deal was found by Cheapflights users on 6/17. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1111:29 amBUF - DEN
1 stop23h 48mSun Country Air
Sun 7/1310:15 amDEN - BUF
1 stop22h 35mSun Country Air
Deal found 6/17$325

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 2,558,603 searches. Data last updated June 19, 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 9/19

1:39 pm-3:22 pm

Nonstop3h 43m

Denver Intl

Mon 9/22

7:30 am-12:43 pm

Nonstop3h 13m

$169

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Tue 8/12

6:25 am-11:24 am

1 stop6h 59m

Denver Intl

Tue 8/12

2:47 pm-10:34 pm

1 stop5h 47m

$211

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 8/16

7:41 pm-11:07 pm

1 stop5h 26m

Denver Intl

Mon 8/18

11:59 pm-10:55 am

1 stop8h 56m

$237

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 10/15

6:00 am-10:40 am

1 stop6h 40m

Denver Intl

Fri 10/24

11:59 pm-9:03 am

1 stop7h 04m

$251

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 8/29

11:03 am-5:07 pm

1 stop8h 04m

Denver Intl

Mon 9/8

7:30 am-12:43 pm

Nonstop3h 13m

$258

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 7/16

7:15 pm-11:10 pm

1 stop5h 55m

Denver Intl

Wed 7/23

7:45 pm-12:50 am

Nonstop3h 05m

$267

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 10/23

8:25 am-10:01 am

Nonstop3h 36m

Denver Intl

Sun 11/2

5:30 pm-10:45 pm

Nonstop3h 15m

$297

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 7/11

11:29 am-9:17 am

1 stop23h 48m

Denver Intl

Sun 7/13

10:15 am-10:50 am

1 stop22h 35m

$325

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 9/18

5:26 pm-9:01 pm

1 stop5h 35m

$118

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 9/17

10:45 am-4:27 pm

1 stop7h 42m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Showing 1-10 of 16 results
1
2

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 June 13, 2025.

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Buffalo to Denver (average of $197). Flying from Buffalo to Denver in March is currently the most expensive (average of $278). 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 June 19, 2025.

One of the essential ways to save on airfare from Buffalo to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 43% on airfare.

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 June 15, 2025.

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

Weekly flight availability from Buffalo to Denver

Explore weekly flight availability from Buffalo 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 June 19, 2025.

The most flights from BUF to DEN are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 June 19, 2025.
To help decide which airline to fly from Buffalo to Denver, see what other customers have to say about Southwest, Delta and United Airlines. 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
4,280 reviews

Entertainment

7.6

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.6

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,964 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.6

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,812 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.6

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,925 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.6

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,280 reviews

Entertainment

7.6

Food

7.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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?

    Booking a flight from Buffalo (BUF) to Denver Intl (DEN) is your only option if you wish to fly from Buffalo to Denver. On a typical day, there are 2 flights from Buffalo to Denver Intl, all of which are around 3h 30m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Buffalo to Denver.

  • How popular is this Buffalo to Denver flight route?

    This flight path from Buffalo to Denver Intl was viewed by 44 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    According to our current data, Frontier ($169), American Airlines ($211), and Delta ($237) offers the cheapest pricing from Buffalo to Denver. Frontier is 48% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $118 on American Airlines. Other airlines that offer cheap prices include Delta from $119 and Frontier from $122 one-way.

  • 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 Southwest (88%), United Airlines (84%) or Frontier (57%) 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 $97. On average you can expect to pay $1,117. The most popular route, (Buffalo - Denver Intl), can usually be booked for $169.

  • 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, October is the cheapest month in which you can book a flight from Buffalo to Denver (average of $197). Flying from Buffalo to Denver in March is currently the most expensive (average of $278). 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

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Broomfield
Grand Lake
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Greeley

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Alternative routes for Buffalo to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Buffalo to Denver

Discover the top 6 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 2,558,603 searches. Data last updated June 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$114Average$238FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$206Average$259FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$211Average$323FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$216Average$314FlexibilityNo cancel feeOn-time71%
DeltaCheapest$220Average$290FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$305Average$436FlexibilityNo cancel feeOn-time63%

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