What is the cheapest airline that flies from Buffalo to Denver Intl?

United Airlines is the most popular carrier operating from Buffalo to Denver Intl

How many flights depart from Buffalo to Denver on average per week?

3 flights are operational weekly from Buffalo to Denver as of January 2026. The most popular departure day for this route is Mon, with 33% of flights per week taking off on this day.

Which airlines fly to Denver?

Frontier, Southwest and United Airlines are the top three most popular airlines that fly to Denver from Buffalo according to our data. Frontier is the first choice among our users, with 49% of people opting to fly with this airline when travelling to Denver. Keep in mind that there are 3 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Buffalo Airport to Denver Intl Airport?

Prices for flights from Buffalo Airport to Denver Intl Airport are updated daily.

How many operators does momondo search for flights from Buffalo Airport to Denver Intl Airport?

As of January 2026, there are 3 operators available to choose from for flights from Buffalo Airport to Denver Intl Airport.

How old do you have to be to fly from Buffalo Airport to Denver Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The travel and health documents required for your trip to Denver Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Denver Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 97 Cheap Flights from Buffalo to Denver in 2026

Q: What is the typical price of a round-trip flight between Buffalo and Denver?

Prices are currently low for flights on this route. Typical prices usually range from C$ 413 to C$ 768. The lowest price recently found on this route was C$ 294.

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Find the cheapest flights from Buffalo to Denver

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One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:29 p.m. - 12:38 p.m.

BUF

DEN

25h 09m

1 stop

12:59 a.m. - 12:44 p.m.

DEN

BUF

9h 45m

1 stop

C$ 294Frontier

Fri, 20 Feb - Thu, 26 Feb

8:25 a.m. - 10:09 a.m.

BUF

DEN

3h 44mdirect

5:44 p.m. - 10:59 p.m.

DEN

BUF

3h 15mdirect

C$ 299United Airlines

Fri, 20 Feb - Mon, 23 Feb

1:29 p.m. - 12:38 p.m.

BUF

DEN

25h 09m

1 stop

6:05 a.m. - 11:05 a.m.

DEN

BUF

27h 00m

2 stops

C$ 303Frontier

Fri, 20 Feb - Fri, 27 Feb

8:00 a.m. - 1:52 p.m.

BUF

DEN

7h 52m

1 stop

11:59 p.m. - 9:39 a.m.

DEN

BUF

7h 40m

1 stop

C$ 305JetBlue

Thu, 12 Feb - Sun, 15 Feb

2:54 p.m. - 9:47 p.m.

BUF

DEN

8h 53m

1 stop

5:44 p.m. - 10:59 p.m.

DEN

BUF

3h 15mdirect

C$ 313United Airlines

Fri, 20 Feb - Fri, 27 Feb

4:47 p.m. - 12:09 a.m.

BUF

DEN

9h 22m

1 stop

11:59 p.m. - 11:03 a.m.

DEN

BUF

9h 04m

1 stop

C$ 327Delta

Thu, 9 Apr - Mon, 13 Apr

6:45 p.m. - 12:23 a.m.

BUF

DEN

7h 38m

1 stop

10:20 a.m. - 4:59 p.m.

DEN

BUF

4h 39m

1 stop

C$ 328Delta

Fri, 20 Feb - Fri, 27 Feb

7:59 p.m. - 5:36 p.m.

BUF

DEN

23h 37m

1 stop

1:28 p.m. - 6:21 p.m.

DEN

BUF

26h 53m

1 stop

C$ 337Frontier

Thu, 5 Feb - Mon, 9 Feb

7:35 p.m. - 10:29 p.m.

BUF

DEN

4h 54m

1 stop

11:59 p.m. - 10:35 a.m.

DEN

BUF

8h 36m

1 stop

C$ 338Delta

Wed, 24 Jun - Wed, 8 Jul

8:17 a.m. - 10:01 a.m.

BUF

DEN

3h 44mdirect

5:55 p.m. - 11:10 p.m.

DEN

BUF

3h 15mdirect

C$ 345United Airlines

Sat, 21 Mar - Fri, 27 Mar

JetBlue flights from Buffalo to Denver

Our best JetBlue deals on Buffalo to Denver flight tickets

JetBlue

12 Feb

BUF8:00 a.m.Buffalo

7h 52m

1 stop

DEN1:52 p.m.Denver Intl

19 Feb

DEN11:59 p.m.Denver Intl

7h 40m

1 stop

BUF9:39 a.m.Buffalo

C$ 305

JetBlue

17 Feb

BUF3:00 p.m.Buffalo

9h 59m

1 stop

DEN10:59 p.m.Denver Intl

1 Mar

DEN11:59 p.m.Denver Intl

7h 36m

1 stop

BUF9:35 a.m.Buffalo

C$ 381

Southwest flights from Buffalo to Denver

Our best Southwest deals on Buffalo to Denver flight tickets

Southwest

11 Mar

BUF9:10 a.m.Buffalo

8h 10m

2 stops

DEN3:20 p.m.Denver Intl

25 Mar

DEN6:25 a.m.Denver Intl

7h 05m

1 stop

BUF3:30 p.m.Buffalo

C$ 363

Southwest

4 Feb

BUF7:30 a.m.Buffalo

7h 55m

1 stop

DEN1:25 p.m.Denver Intl

9 Feb

DEN5:30 a.m.Denver Intl

7h 25m

1 stop

BUF2:55 p.m.Buffalo

C$ 385

Southwest

4 Feb

BUF1:20 p.m.Buffalo

8h 15m

2 stops

DEN7:35 p.m.Denver Intl

9 Feb

DEN6:15 a.m.Denver Intl

7h 10m

1 stop

BUF3:25 p.m.Buffalo

C$ 392

Fly from

Fly to

Route

Depart

Return

Price

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 20/2

1:29 p.m.-12:38 p.m.

1 stop25h 09m

Denver Intl

Thu 26/2

12:59 a.m.-12:44 p.m.

1 stop9h 45m

C$ 294

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 20/2

8:25 a.m.-10:09 a.m.

Nonstop3h 44m

Denver Intl

Mon 23/2

5:44 p.m.-10:59 p.m.

Nonstop3h 15m

C$ 299

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 20/2

1:29 p.m.-12:38 p.m.

1 stop25h 09m

Denver Intl

Fri 27/2

6:05 a.m.-11:05 a.m.

2 stops27h 00m

C$ 303

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 12/2

8:00 a.m.-1:52 p.m.

1 stop7h 52m

Denver Intl

Sun 15/2

11:59 p.m.-9:39 a.m.

1 stop7h 40m

C$ 305

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 20/2

2:54 p.m.-9:47 p.m.

1 stop8h 53m

Denver Intl

Fri 27/2

5:44 p.m.-10:59 p.m.

Nonstop3h 15m

C$ 313

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 9/4

4:47 p.m.-12:09 a.m.

1 stop9h 22m

Denver Intl

Mon 13/4

11:59 p.m.-11:03 a.m.

1 stop9h 04m

C$ 327

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Fri 20/2

6:45 p.m.-12:23 a.m.

1 stop7h 38m

Denver Intl

Fri 27/2

10:20 a.m.-4:59 p.m.

1 stop4h 39m

C$ 328

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Thu 5/2

7:59 p.m.-5:36 p.m.

1 stop23h 37m

Denver Intl

Mon 9/2

1:28 p.m.-6:21 p.m.

1 stop26h 53m

C$ 337

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Wed 24/6

7:35 p.m.-10:29 p.m.

1 stop4h 54m

Denver Intl

Wed 8/7

11:59 p.m.-10:35 a.m.

1 stop8h 36m

C$ 338

BuffaloDenver

BUF - DEN

BUFDEN

Buffalo

Sat 21/3

8:17 a.m.-10:01 a.m.

Nonstop3h 44m

Denver Intl

Fri 27/3

5:55 p.m.-11:10 p.m.

Nonstop3h 15m

C$ 345

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Buffalo to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Buffalo and Denver?

What is the cheapest month to fly to Denver?

In general, August is the cheapest month to fly from Buffalo to Denver. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 373. If you aren’t able to travel during the month of August, then book flights to Denver from Buffalo during October instead. Flights to Denver in October, while not as cheap as those in August, still average around C$ 373.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart from Buffalo to Denver is on a Friday. Travellers who choose to depart for Denver on a Friday will often find tickets for as low as C$ 347. On the other hand, Tuesday is the most expensive day to depart from Buffalo because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 835.

What is the cheapest time of day to depart on your flight to Denver?

Our most recent data shows that the best time of day to fly to Denver is in the afternoon. Flights from Buffalo to Denver during this time can be as low as C$ 334. Try not to purchase tickets in the morning because they tend to be around C$ 560. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Buffalo to Denver Intl flight route?

Fly from Buffalo to Denver Intl for the best Buffalo - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around C$ 471 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Buffalo for as low as C$ 327 on momondo.

What cabin class options are available on Buffalo to Denver Intl flights?

There are 2 cabin classes available to choose from on Buffalo to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Buffalo to Denver flights?

No. A direct flight is the cheapest option for a flight between Buffalo to Denver.

How have Buffalo to Denver flight prices changed over time?

As of January 2026, prices for Buffalo to Denver flights are approximately 75% more expensive when compared to flights at the same time last year.

When to book flights from Buffalo to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to Denver according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Buffalo to Denver (BUF to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to Denver

Best price found	C$ 454
Fastest flight time	3h 44m
Direct flights	Every day
Airports in Denver	1 airport

The best flight deal from Buffalo to Denver found on momondo in the last 72 hours is C$ 454

The fastest flight from Buffalo to Denver takes 3h 44m

Direct flights go from Buffalo to Denver every day.

There is 1 airport in Denver. From Buffalo there are direct flights to Denver Intl (DEN).

Search flight deals

How far is Buffalo to Denver Intl by plane?
A flight from Buffalo to Denver Intl will travel around 2197.7 km. Flights usually cover this in 3h 44m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Buffalo Airport to Denver Intl Airport?
Prices for flights from Buffalo Airport to Denver Intl Airport are updated daily.
How many operators does momondo search for flights from Buffalo Airport to Denver Intl Airport?
As of January 2026, there are 3 operators available to choose from for flights from Buffalo Airport to Denver Intl Airport.
How old do you have to be to fly from Buffalo Airport to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The travel and health documents required for your trip to Denver Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Denver Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Buffalo to Denver?
Based on momondo bookings for flights between Buffalo and Denver, the leading plane model is Boeing 737-800, making up 32.08% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 20.38%, Boeing 737 MAX 8 with 15.09%, and Airbus A320-100/200 with 5.66%.
What is the most popular airline from Buffalo to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Buffalo to Denver is Frontier (49% of total bookings). The next most popular airlines are Southwest (26%) and United Airlines (25%).

Best airlines flying from Buffalo to Denver

Compare and see reviews for airlines that fly from Buffalo to Denver with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom C$ 207	Free Cancellation	Rating 5.7 3,058 reviews	Search Frontier flights
United Airlines	PriceFrom C$ 248	Free Cancellation	Rating 7.4 9,176 reviews	Search United Airlines flights
Southwest	PriceFrom C$ 385	Free Cancellation	Rating 8.0 4,262 reviews	Search Southwest flights

Southwest Flights From Buffalo to Denver
Southwest flight deals from Buffalo to Denver start from C$ 385 round-trip. Over the 3 Southwest flights for this route in a normal week, average airfare is usually C$ 591 round-trip - but some users have found much cheaper deals with momondo.

Silverthorne

Wheat Ridge

Winter Park

Lakewood

Longmont

Boulder

Englewood

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to Denver?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Denver from Buffalo.

Can I find flights from Buffalo to Denver with flexible booking policies on momondo?

Flights from Buffalo to Denver with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Buffalo to Denver?

momondo provides multiple filters to help you find the best flight to Denver from Buffalo. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Buffalo to Denver right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Denver from Buffalo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.