United Flights from Buffalo (BUF) to Denver (DEN) from

For any current Denver, CO (DEN-Denver Intl.) quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Check before you book your flight, so you don't get caught out.

Your boarding pass usually displays exactly which terminal your United Airlines flight will be departing from at Buffalo Niagara Intl. Airport (BUF). It might also be able to provide you with arrival details for Denver Airport. If not, it's probably a wise idea to ask your airline.

You won't find any direct flights from BUF to Denver Intl. Airport (DEN) with United Airlines. Plan to make at least one stopover if you have to stick to this airline and route.

Throw that book in your carry-on you've been eager to read. A flight from Buffalo Niagara International Airport to Denver, CO (DEN-Denver Intl.) with United Airlines takes on average 4 hours and 37 minutes. It'll be enough time to immerse yourself in the plot.

If you'd like to book a jaunt from BUF to DEN, you can choose from approximately 7 United Airlines flights each day.

For more info about changing your flight to Denver Intl. Airport (DEN), please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.