£183 Cheap Flights from Denver (DEN) to Portland (PWM)

To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Portland, ME (PWM-Portland Intl. Jetport), 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.

The best airline to fly with from Denver, CO (DEN-Denver Intl.) to Portland, ME (PWM-Portland Intl. Jetport) will differ from traveller to traveller. If you like to fly early, United Airlines offers early morning flights. If price is the most important factor, United Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Denver, CO (DEN-Denver Intl.) to Portland, ME (PWM-Portland Intl. Jetport), which is brilliant 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.

The earliest flight from Denver International Airport (DEN) to Portland International Jetport (PWM) typically departs at approximately 12:00 AM local time, operated by Frontier Airlines. This is a seasonal service active in August and October. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

If you're flying from Denver, CO (DEN-Denver Intl.) to Portland, ME (PWM-Portland Intl. Jetport), you'll typically find the most flights on a Tuesday, with around 48 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United Airlines, Southwest Airlines, and American Airlines. Flight schedules are consistent throughout the week, so you'll find plenty of options regardless of the day you choose to fly.

The most popular departure times for flights from Denver International Airport (DEN) to Portland International Jetport (PWM) are in the early morning, from 6am to 9am. Approximately 30% of passengers prefer this time window. Many major carriers, including American Airlines, United Airlines and Southwest Airlines, offer flights during this window. These times work well because they allow you to get an early start on your travel day, arriving in Portland with plenty of time to settle in.

It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Portland, ME (PWM-Portland Intl. Jetport) 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.

If you booked your Denver, CO (DEN-Denver Intl.) to Portland, ME (PWM-Portland Intl. Jetport) 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.