$128 Cheap Frontier Airlines flights Washington (DCA) to Denver (DEN)

View $128 flight on Tue, Aug 26, 2025Opens in a new window

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$128 Cheap Frontier Airlines flights Washington (DCA) to Denver (DEN)

Prices were available within the past 7 days and start at $128 for one-way flights and $199 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 16 - Sat, Aug 23
DCA
Washington
DEN
Denver
$199 Roundtrip, just found
$199
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 16 from Washington to Denver, returning Sat, Aug 23, priced at $199 just found
Frontier Airlines
Tue, Aug 26 - Thu, Sep 4
DCA
Washington
DEN
Denver
$204 Roundtrip, just found
$204
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Aug 26 from Washington to Denver, returning Thu, Sep 4, priced at $204 just found
Frontier Airlines
Wed, Jul 30 - Fri, Aug 1
DCA
Washington
DEN
Denver
$223 Roundtrip, found 2 hours ago
$223
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, Jul 30 from Washington to Denver, returning Fri, Aug 1, priced at $223 found 2 hours ago
Frontier Airlines
Sat, Aug 23 - Tue, Aug 26
DCA
Washington
DEN
Denver
$227 Roundtrip, just found
$227
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 23 from Washington to Denver, returning Tue, Aug 26, priced at $227 just found
Flights from Washington (DCA) to Denver (DEN)
Origin airport
Ronald Reagan Washington National
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
1471 mi
Average flight time
2 hours 58 mins

Frequently asked questions

How much is a Frontier Airlines flight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Landing cheap one-way Frontier Airlines flights from DCA to DEN from $128 on Expedia is a breeze --- just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $199 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DCA to DEN with Frontier Airlines?
Look for return or one-way flights to Denver in January or November. You could find lower fares with Frontier Airlines during these quieter months.
What is the cheapest time to book flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) with Frontier Airlines?
Search for cheap Frontier Airlines flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN) one to three months prior to your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Frontier Airlines has direct flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN), with 21 weekly departures. Simply apply the "Nonstop" and "Airline" filters during your search on Expedia to show all direct Frontier Airlines flights to DEN.
How long does it take to fly from DCA to DEN with Frontier Airlines?
Depart Ronald Reagan Washington National Airport (DCA) for Denver Intl. Airport (DEN) on a direct Frontier Airlines flight, and you'll be airborne for approximately 4h 13m.
Which day of the week has the most Frontier Airlines flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
If you're looking for flexibility, Thursday offers the most choice for Frontier Airlines flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN). You can select from 3 different departures.
What is the earliest Frontier Airlines flight from DCA to DEN?
The earliest Frontier Airlines flight from DCA to DEN departs at 7:00AM UTC-5, arriving at 9:12AM UTC-7. If you prefer to jet off later, the last Frontier Airlines flight leaves DCA at 6:00PM UTC-5 and touches down at DEN at 8:12PM UTC-7. Flying before noon is often a smart option as morning and mid-morning flights are less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in Denver?
Frontier Airlines flights from Ronald Reagan Washington National Airport (DCA) to Denver touch down at Denver Intl. Airport (DEN). This is the main gateway to this city.
Why fly with Frontier Airlines from DCA to DEN?
Offering a rewarding loyalty program, Frontier Airlines is a top pick for many travelers heading from DCA to DEN. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does Frontier Airlines fly from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Frontier Airlines generally flies Airbus A320neo planes for flights from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN). This carrier also operates the Airbus A320 on this route. Remember that aircraft type can change due to operational needs, so the plane you catch might be different on the day.
Can I change or cancel my Frontier Airlines flight from Ronald Reagan Washington National Airport (DCA) to Denver Intl. Airport (DEN)?
Typically, you can reschedule or cancel your flight, although there may be additional charges if you made your booking over 24 hours ago. Want to keep your options open? Use Expedia's "No cancel fee" or "Changes included" filter to find flights that won't penalize you if you have to adjust your plans. To update your booking, visit "Trips," select your flight and click on "Manage Booking" for more details.

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