Cheap flights from Philadelphia to Denver from $53
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Denver departing on 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from Philadelphia to Denver
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How to get the cheapest flight ticket from Philadelphia 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
What is the cheapest month to fly to Denver?
The cheapest month to fly to Denver from Philadelphia is in September. Flight prices, which tend to average around $243, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until October to fly from Philadelphia, when ticket prices are also cheap, with an average price of $267.
What is the cheapest day to depart on your flight to Denver?
The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $332. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $400.
What is the cheapest time of day to depart on your flight to Denver?
The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $237. Flights in the afternoon are often more expensive with an average ticket price of $430.
What is the cheapest Philadelphia to Denver Intl flight route?
Fly from Philadelphia to Denver Intl for the best Philadelphia - 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 Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $306 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Philadelphia for as low as $264 on momondo.
What cabin class options are available on Philadelphia to Denver Intl flights?
There are 4 cabin classes available to choose from on Philadelphia 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 Philadelphia to Denver flights?
No. A direct flight is the cheapest option for a flight between Philadelphia to Denver.
How have Philadelphia to Denver flight prices changed over time?
As of July 2025, prices for Philadelphia to Denver flights are approximately 3% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Philadelphia to Denver Intl?
Frontier and American Airlines are the most popular carriers operating from Philadelphia to Denver Intl
What airlines fly to Denver?
United Airlines, Frontier and American Airlines are the top three most popular airlines that fly to Denver from Philadelphia according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 8 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.
How many flights depart from Philadelphia to Denver on average per day?
As of July 2025, 11 flights take off from Philadelphia and land in Denver each day. The most common flight departure time for this route is 8:00AM, with 62% of daily flights taking off at noon.
How many flights depart from Philadelphia to Denver on average per week?
The number of flights available between Philadelphia and Denver is 82 per week as of July 2025. The most frequent departure day is Mon, with 23% of weekly flights leaving on this day.
When to book flights from Philadelphia to Denver
Cheap Philadelphia to Denver (PHL to DEN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Denver
How far is Philadelphia to Denver Intl by plane?
The distance between Philadelphia and Denver Intl is about 1574.0 mi. A reasonable flight in good conditions will take 4h 12m.
When did momondo last update prices for flights from Philadelphia Airport to Denver Intl Airport?
Prices for flights from Philadelphia Airport to Denver Intl Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to Denver Intl Airport?
There are 8 operators available for flights from Philadelphia Airport to Denver Intl Airport as of July 2025.
How old do you have to be to fly from Philadelphia 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 Philadelphia Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Philadelphia to Denver?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Philadelphia to Denver is Boeing 737-800 (17.00% of total bookings). The next most popular plane models are Airbus A320-100/200 (13.90%), Boeing 737 MAX 8 (13.48%), and Boeing 737-800 Passenger/BBJ2 (winglets) (10.45%).
What is the most popular airline from Philadelphia to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Philadelphia to Denver is Frontier (39% of total bookings). The next most popular airlines are American Airlines (28%), United Airlines (18%), and Southwest (13%).
Best airlines flying from Philadelphia to Denver
Compare and see reviews for airlines that fly from Philadelphia to Denver with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $82 | Free Cancellation | Rating 6.9 340 reviews | |||
| PriceFrom $90 | Free Cancellation | Rating 5.9 3,290 reviews | |||
| PriceFrom $106 | Free Cancellation | Rating 7.2 709 reviews | |||
| PriceFrom $134 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $182 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $190 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $193 | Free Cancellation | Rating 8.0 4,272 reviews | |||
| PriceFrom $207 | Free Cancellation | Rating 7.3 2,918 reviews |
Southwest Flights From Philadelphia to Denver
The lowest priced Southwest flight from Philadelphia to Denver from the last 72 hours was $193. Generally, Southwest has 12 flights on this route every week with an average price of $341. Southwest is rated 8.0/10 by our users.
United Airlines Flights From Philadelphia to Denver
United Airlines is also a popular choice for this route. United Airlines flight deals for Philadelphia to Denver start from as low as $190 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $410. United Airlines operates 20 flights to Denver from Philadelphia in an average week. Users have rated it 7.4/10 across 8,861 reviews.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Philadelphia to Denver?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Denver. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Philadelphia to Denver with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Philadelphia to Denver flights to just show those with flexible booking policies.
How can momondo help me find flights from Philadelphia to Denver?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Denver from Philadelphia.
I’m not ready to book a flight from Philadelphia to Denver right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Denver from Philadelphia. 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.