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CA $223 Cheap Flights from Philadelphia (PHL) to Denver (DEN)

View CA $223 flight on Wed, Sep 30, 2026Opens in a new window

Popular airlines from Philadelphia International Airport (PHL) to Denver International Airport (DEN)

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Cheap flights from Philadelphia (PHL) to Denver (DEN)

Prices were available within the past 7 days and start at CA $223 for one-way flights and CA $445 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Oct 26 - Sat, Oct 31
PHL
Philadelphia
DEN
Denver
CA $445 Roundtrip, found 1 day ago
CA $445
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Oct 26 from Philadelphia to Denver, returning Sat, Oct 31, priced at CA $445 found 1 day ago
American Airlines
Sat, Oct 24 - Tue, Oct 27
PHL
Philadelphia
DEN
Denver
CA $447 Roundtrip, found 3 days ago
CA $447
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 24 from Philadelphia to Denver, returning Tue, Oct 27, priced at CA $447 found 3 days ago
Delta
Wed, Oct 7 - Wed, Oct 14
PHL
Philadelphia
DEN
Denver
CA $459 Roundtrip, found 17 hours ago
CA $459
Roundtrip
found 17 hours ago
Select Delta flight, departing Wed, Oct 7 from Philadelphia to Denver, returning Wed, Oct 14, priced at CA $459 found 17 hours ago
Southwest Airlines
Mon, Oct 26 - Tue, Oct 27
PHL
Philadelphia
DEN
Denver
CA $459 Roundtrip, found 2 days ago
CA $459
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Oct 26 from Philadelphia to Denver, returning Tue, Oct 27, priced at CA $459 found 2 days ago
American Airlines
Sat, Oct 17 - Mon, Oct 19
PHL
Philadelphia
DEN
Denver
CA $461 Roundtrip, found 3 days ago
CA $461
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Oct 17 from Philadelphia to Denver, returning Mon, Oct 19, priced at CA $461 found 3 days ago
American Airlines
Mon, Sep 28 - Fri, Oct 2
PHL
Philadelphia
DEN
Denver
CA $462 Roundtrip, found 2 days ago
CA $462
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Sep 28 from Philadelphia to Denver, returning Fri, Oct 2, priced at CA $462 found 2 days ago
Southwest Airlines
Mon, Oct 26 - Tue, Oct 27
PHL
Philadelphia
DEN
Denver
CA $472 Roundtrip, found 2 days ago
CA $472
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Oct 26 from Philadelphia to Denver, returning Tue, Oct 27, priced at CA $472 found 2 days ago
Delta
Mon, Oct 26 - Sat, Oct 31
PHL
Philadelphia
DEN
Denver
CA $472 Roundtrip, found 1 day ago
CA $472
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Oct 26 from Philadelphia to Denver, returning Sat, Oct 31, priced at CA $472 found 1 day ago
United
Sat, Oct 17 - Mon, Oct 19
PHL
Philadelphia
DEN
Denver
CA $516 Roundtrip, found 3 days ago
CA $516
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 17 from Philadelphia to Denver, returning Mon, Oct 19, priced at CA $516 found 3 days ago
JetBlue Airways
Thu, Dec 24 - Tue, Dec 29
PHL
Philadelphia
DEN
Denver
CA $815 Roundtrip, found 1 day ago
CA $815
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Thu, Dec 24 from Philadelphia to Denver, returning Tue, Dec 29, priced at CA $815 found 1 day ago

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city centre is 32 minutes. Flights from CA $734
DEN
Denver Intl.
Cheapest
Average driving time to city centre32 min
Flights from CA $734

Find the cheapest month to fly from Philadelphia (PHL) to Denver (DEN)

September is typically the cheapest month to fly

From CA $143 - CA $339 per traveller.

Frequently asked questions

How much does a flight from Philadelphia, PA (PHL) to Denver, CO (DEN) cost?
You can find cheap one-way flights from CA $223 and cheap return flights from CA $445 PHL to DEN with Expedia. One-way flights typically cost between CA$184 and CA$583. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when PHL to DEN ticket fares go up or down.
What is the cheapest month to fly from Philadelphia, PA (PHL) to Denver, CO (DEN)?
The cheapest months to fly from Philadelphia, PA (PHL) to Denver, CO (DEN) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
There are 4 airlines offering direct flights from Philadelphia Intl. (PHL) to Denver Intl. (DEN). Here are the carriers:
  • United operates 34 direct flights from Philadelphia Intl. to Denver Intl. every week.
  • American Airlines operates 30 direct flights from Philadelphia Intl. to Denver Intl. every week.
  • Southwest Airlines operates 20 direct flights from Philadelphia Intl. to Denver Intl. every week.
  • Frontier Airlines operates 11 direct flights from Philadelphia Intl. to Denver Intl. every week.
What is the cheapest airline that flies from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
Frontier Airlines is one of the cheapest airlines offering nonstop return flights from Philadelphia Intl. (PHL) to Denver Intl. (DEN), with tickets starting from around CA$77 for flights that can be booked for departure within the next year. Sun Country Airlines offers one of the cheapest connecting return flights from Philadelphia Intl. (PHL) to Denver Intl. (DEN), with tickets starting from around CA$289. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) will differ from traveler to traveler. If you like to fly early, Frontier Airlines offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Philadelphia, PA (PHL) to Denver, CO (DEN)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
You'll find approximately 14 nonstop flights per day from Philadelphia International Airport (PHL) to Denver International Airport (DEN). For even more choices, look at flights that include layovers, as there are around 96 connecting flights per day. Some common connection points include O'Hare International (ORD), Midway International (MDW), and Seattle - Tacoma International (SEA).
What is the earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Philadelphia International Airport (PHL) to Denver International Airport (DEN) typically departs around 5:00 AM local time. This flight is operated by American Airlines. This is a seasonal service, active in January and February. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
You'll typically find the most flights from Philadelphia International Airport (PHL) to Denver International Airport (DEN) on a Thursday, with around 98 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Frontier Airlines, and Delta. Flight schedules are quite consistent throughout the week, so you'll have a good selection of flights no matter which day you choose to fly.
What are the most popular departure times for flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Philadelphia Intl. (PHL) to Denver Intl. (DEN) are in the early morning, from 6am to 9am. Many major carriers, including Frontier Airlines, American Airlines and United, offer flights during this window. Many travellers prefer these times because it allows for an early arrival at your destination, giving you more time to enjoy your day in Denver.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
When flying from Philadelphia International Airport (PHL) to Denver International Airport (DEN), you have a few options for flight duration. A direct, non-stop flight typically takes around 4 hours 13 minutes, covering a distance of approximately 2,501 kilometers. If you opt for a flight with one stop, your travel time will generally be longer, averaging about 9 hours 14 minutes. For flights with two or more stops, you can expect the journey to take around 11 hours 47 minutes. Keep in mind that these are average times, and actual flight durations can vary based on factors like routing, weather conditions, and wind patterns.
Can you fly business or first class from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
You can fly business class or first class between PHL and DEN. You can fly business class with Frontier Airlines and Delta.First class cabins are available on Alaska Airlines, United, Delta, and American Airlines.
How do I earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver, CO (DEN) from Philadelphia, PA (PHL)?
If you're planning to travel to Denver from Philadelphia Intl. (PHL), you can fly directly into Denver Intl. (DEN). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Midway Intl. (MDW), or Portland Intl. (PDX) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
If you booked your Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Roundtrip price
CA $445
Distance
2485 km
Average flight time
1 hour 58 mins

Book with confidence

Philadelphia to Denver Flights

The easy way to book your flights from Philadelphia to Denver 

With Expedia, it’s simple to find and book flights to Denver from Philadelphia whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Denver Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Philadelphia to Denver today, tomorrow, or this week.  

 

Save dollars with cheap flights from Philadelphia Intl., PHL to Denver Intl., DEN 

Sort your search results by price to find great deals on your flight from Philadelphia to Denver—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Denver from Philadelphia currently is just CA $445 rising to CA $815.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Denver  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Denver from Philadelphia 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Denver with Expedia today.

Philadelphia to Denver Flights

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*Available to Expedia members.