C$ 196 Find Cheap Flights from Buffalo to Denver – Compare and Save

Among airlines operating Buffalo to Denver flights:

• United Airlines: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Buffalo and Denver. The airlines offering direct flights on this route include:

• Southwest
• United Airlines

Flights from Buffalo to Denver usually depart from Buffalo (BUF) and arrive at Denver Intl (DEN).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a carry-on bag and a checked bag in Economy Class
• Southwest: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Only Economy Class is available on flights from Buffalo to Denver.

On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 293 round-trip via Charlotte Douglas (CLT), compared to C$ 605 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 56–C$ 125 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

The Boeing 737-800 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

One-stop flights from Buffalo to Denver most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) – 42% of one-stop connections
• Chicago O'Hare Intl (ORD) – 15% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) – 12% of one-stop connections
• Chicago Midway (MDW) – 7% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 28% on the Buffalo to Denver route. Friday is the cheapest departure day at C$ 497 round-trip on average, while Monday is the most expensive at C$ 690, a difference of C$ 193. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on Buffalo to Denver flights, with 50% leaving in that window. Afternoon departures account for 50%, Evening flights for 0%, and Night flights for 0%.

Some of the most popular sights in Denver are Colorado Convention Center, 16th Street Mall, and Sheraton Denver Downtown Hotel. These are among the most viewed places in Denver on KAYAK.

These are the earliest and latest flight times available from Buffalo to Denver:

• Earliest: departs at 5:10 am and lands at 8:49 am
• Latest: departs at 5:15 pm and lands at 8:54 pm.

The flight takes about 3h 39m.

Last-minute fares on this route – booked within 2 weeks of departure – run 6% above the route average of C$ 570. Book 17 weeks before departure for the lowest fares.

A direct flight from Buffalo to Denver takes 3h 39m, covering 3,509 km.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 406 to C$ 3,443. That means the highest observed fare was about 8x higher than the lowest one.

One-way fares from Buffalo to Denver are currently lower than usual. Average one-way flight prices are about C$ 224, which is 31% below the typical average for this route.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 5h 33m, compared with 5h 50m via Detroit Metropolitan Wayne County (DTW) and 6h 10m via Washington, D.C. Dulles Intl (IAD).

Denver is 2 hours behind Buffalo (Mountain Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Denver Intl Airport (DEN) hosts 5 major car rental companies, with daily rates starting from around C$ 22 for economy cars. Top options include:
• Routes Car & Truck Rentals
• Ace
• NU Car
• Europcar
• Hertz

Round-trip flights from Buffalo to Denver range from C$ 397 to C$ 692, with an average of C$ 570 over the past 12 months. Anything below C$ 397 counts as a good deal.