How do most travelers feel about United Airlines?

When planning your PHL-DEN trip, keep in mind that United Airlines is typically rated 6.4/10. This rating comes from 8,607 reviews by Cheapflights users who have traveled with United Airlines.

Can I get a flight from Philadelphia to Denver on United Airlines for under $400?

Cheapflights users have found 22 United Airlines flights for under $400 on the PHL-DEN route. Prices on flights to Denver from Philadelphia can vary based on many factors including dates. To look at price based on your preferred dates, click here.

How far ahead should I book a flight from Philadelphia to Denver with United Airlines?

Booking with United Airlines 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia 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 Philadelphia to Denver with United Airlines?

Currently, the most affordable month to book a United Airlines flight from Philadelphia to Denver in December, with an average price of $192. Conversely, traveling with United Airlines from Philadelphia to Denver in July will be the most expensive, with an average cost of $272. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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.

Fly United Airlines from PHL to DEN as low as $108

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Cheapflights users flying from Philadelphia to Denver on United Airlines typically fly into Denver Intl and depart from Philadelphia. Select your dates above for pricing.

United Airlines flights from Philadelphia to Denver in 2024

Popular in	February
Cheapest in	April
Average price (all airlines)	$326
One-way from	$108
Round-trip from	$183

Highest demand for flights from Philadelphia to Denver Intl; 12% potential price increase.

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Best time to find cheap flights from Philadelphia to Denver Intl; 2% potential price drop.

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Average price for all Philadelphia to Denver Intl flights (one-way and round-trip).

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Cheapest one-way United Airlines flight from Philadelphia to Denver Intl

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Cheapest round-trip United Airlines flight from Philadelphia to Denver Intl

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Can I get a flight from Philadelphia to Denver on United Airlines for under $400?
Cheapflights users have found 22 United Airlines flights for under $400 on the PHL-DEN route. Prices on flights to Denver from Philadelphia can vary based on many factors including dates. To look at price based on your preferred dates, click here.
How do most travelers feel about United Airlines?
When planning your PHL-DEN trip, keep in mind that United Airlines is typically rated 6.4/10. This rating comes from 8,607 reviews by Cheapflights users who have traveled with United Airlines.

Cheapest United Airlines flights from Philadelphia to Denver

Sat 6/86:53 amPHL - DEN

Nonstop4h 05mUnited Airlines

Wed 6/1911:20 pmDEN - PHL

Nonstop3h 40mUnited Airlines

Deal found 6/1$362

Pick Dates

Sat 6/83:59 pmPHL - DEN

1 stop6h 54mUnited Airlines

Wed 6/1911:20 pmDEN - PHL

Nonstop3h 40mUnited Airlines

Deal found 6/1$372

Pick Dates

Fri 6/143:30 pmPHL - DEN

Nonstop4h 23mUnited Airlines

Mon 6/1711:20 pmDEN - PHL

Nonstop3h 40mUnited Airlines

Deal found 5/30$442

Pick Dates

Direct flights from Philadelphia to Denver on United Airlines

Thu 9/510:00 amPHL - DEN

Nonstop4h 08mUnited Airlines

Sun 9/811:55 pmDEN - PHL

Nonstop3h 37mUnited Airlines

Deal found 5/30$183

Pick Dates

Thu 10/177:00 amPHL - DEN

Nonstop4h 09mUnited Airlines

Wed 10/2311:52 pmDEN - PHL

Nonstop3h 37mUnited Airlines

Deal found 6/1$197

Pick Dates

Fri 8/308:11 amPHL - DEN

Nonstop4h 08mUnited Airlines

Mon 9/211:55 pmDEN - PHL

Nonstop3h 37mUnited Airlines

Deal found 5/31$217

Pick Dates

Last minute deals on Cheapflights

Sat 6/86:53 amPHL - DEN

Nonstop4h 05mUnited Airlines

Wed 6/1911:20 pmDEN - PHL

Nonstop3h 40mUnited Airlines

Deal found 6/1$362

Pick Dates

Sat 6/83:59 pmPHL - DEN

1 stop6h 54mUnited Airlines

Wed 6/1911:20 pmDEN - PHL

Nonstop3h 40mUnited Airlines

Deal found 6/1$372

Pick Dates

Sat 6/86:00 amPHL - DEN

2 stops14h 20mUnited Airlines

Wed 6/194:19 pmDEN - PHL

1 stop6h 21mUnited Airlines

Deal found 6/1$479

Pick Dates

One-way United Airlines flights to Denver from Philadelphia

Tue 7/26:36 pmPHL - DEN

1 stop6h 16mUnited Airlines

Deal found 6/1$108

Pick Dates

Fri 10/47:00 amPHL - DEN

Nonstop4h 09mUnited Airlines

Deal found 5/31$109

Pick Dates

Thu 8/296:18 pmPHL - DEN

1 stop7h 14mUnited Airlines

Deal found 5/31$118

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Best time to book a flight from Philadelphia to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Philadelphia with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in Denver by month

DEN Temperature	30.2 - 73.4 °F

DEN

Temperature

30.2 - 73.4 °F

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).

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Fly from Philadelphia to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Frontier flights from Philadelphia to Denver Intl

Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

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Other popular destinations in North America
If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

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Flights to Fort Lauderdale

Popular flights with United Airlines
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on June 1, 2024.

United Airlines flights from Denver Intl to Philadelphia

United Airlines flights from Philadelphia to Denver

United Airlines flights from Philadelphia to San Francisco

United Airlines flights from Philadelphia to Denver

United Airlines flights from Philadelphia to San Francisco

United Airlines flights from Philadelphia to Chicago

United Airlines flights from Philadelphia to Denver

United Airlines flights from Philadelphia to San Francisco

United Airlines flights from Philadelphia to Chicago

United Airlines flights from Philadelphia to San Francisco

United Airlines flights from Philadelphia to Chicago

See what others are saying about United Airlines

United Airlines

7.4

Good

10,754 reviews

Check prices

Overview

Recent reviews

8.0

Very good|Mar 2022

Just a normal flight - all was just fine and reasonably comfortable given the physical limitations of flight - arrived safe and on time which are the important things. The only thing that could have been better - that was controllable - was the food - I am always amazed that it can get worse than it was before but United seems to have experts in this area and they should be commended on continuing to make the food worse when it seemed like it as as bad as it could get while using actual food as inputs. I'm guessing we are pretty close to rock bottom by now but United always seems be able to give that extra effort to eliminate that last little bit of remaining quality and taste. I would recommend that United stop having their accountants plan and prepare meals and snacks and let actual chefs, or at least cooks prepare them in the future.

6.0

Okay|Apr 2024

The staff were pleasant. There was no food or entertainment.

2.0

Poor|Nov 2021

Clear attendant at the Logan airport was awful. Rude and inconsiderate to everyone. Let every clear customer in front of every priority United customer. Usually they switch off groups but we were waiting 30 minutes when we were third from the front because every clear customer was let in front of us.

8.0

Very good|Jan 2022

Everything was great. Even though the flight got delayed 10 minutes we arrived on time

5.9

Fair|Aug 2021

Boarding was too long. The Seats are too thin. The snacks were water and a cookie.

1 out of 3585

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Cheapflights users flying from Philadelphia to Denver on United Airlines typically fly into Denver Intl and depart from Philadelphia. Select your dates above for pricing.

United Airlines flights from Philadelphia to Denver in 2024

Find detailed information about United Airlines flights from Philadelphia to Denver. Explore the options provided by United Airlines to plan your journey from Philadelphia to Denver. Data last updated June 1, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Philadelphia to Denver on United Airlines for under $400?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Philadelphia to Denver

Direct flights from Philadelphia to Denver on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to Denver from Philadelphia

Best time to book a flight from Philadelphia to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Philadelphia with our price prediction graph.

Temperature and rainfall in Denver by month

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Philadelphia to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Other United Airlines flights from Philadelphia
Browse through other United Airlines flights departing from Philadelphia. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Browse through other United Airlines flights departing from Philadelphia. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Philadelphia and Denver
Choose from other airlines serving Philadelphia and Denver.

Choose from other airlines serving Philadelphia and Denver.

Other popular destinations in North America
If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Popular flights with United Airlines
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on June 1, 2024.

See what others are saying about United Airlines

Overview

Recent reviews

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Flights

United Airlines flights from Philadelphia to Denver (PHL - DEN)

Cheapflights users flying from Philadelphia to Denver on United Airlines typically fly into Denver Intl and depart from Philadelphia. Select your dates above for pricing.

United Airlines flights from Philadelphia to Denver in 2024

Find detailed information about United Airlines flights from Philadelphia to Denver. Explore the options provided by United Airlines to plan your journey from Philadelphia to Denver. Data last updated June 1, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Philadelphia to Denver on United Airlines for under $400?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Philadelphia to Denver

Direct flights from Philadelphia to Denver on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to Denver from Philadelphia

Best time to book a flight from Philadelphia to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Philadelphia with our price prediction graph.

Temperature and rainfall in Denver by month

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Philadelphia to Denver on another airlineConsider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.

See what others are saying about United Airlines

Overview

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Book with Flexibility

Travel Smart

Fly from Philadelphia to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on June 1, 2024.