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Fri, May 8 - Fri, May 15
BWI
Baltimore Washington Intl. Thurgood Marshall
DEN
Denver Intl.
$378 Roundtrip, found 1 hour ago
$378
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, May 8 from Baltimore Washington Intl. Thurgood Marshall to Denver Intl., returning Fri, May 15, priced at $378 found 1 hour ago
Fri, May 8 - Mon, May 11
IAD
Washington Dulles Intl.
DEN
Denver Intl.
$398 Roundtrip, found 1 hour ago
$398
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, May 8 from Washington Dulles Intl. to Denver Intl., returning Mon, May 11, priced at $398 found 1 hour ago
Fri, May 8 - Mon, May 11
DCA
Ronald Reagan Washington National
COS
Colorado Springs
$488 Roundtrip, found 1 day ago
$488
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, May 8 from Ronald Reagan Washington National to Colorado Springs, returning Mon, May 11, priced at $488 found 1 day ago
Fri, May 8 - Mon, May 11
IAD
Washington Dulles Intl.
COS
Colorado Springs
$488 Roundtrip, found 1 day ago
$488
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, May 8 from Washington Dulles Intl. to Colorado Springs, returning Mon, May 11, priced at $488 found 1 day ago
Tue, Aug 18 - Tue, Aug 25
DCA
Washington
DEN
Denver
$158 Roundtrip, found 1 day ago
$158
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Aug 18 from Washington to Denver, returning Tue, Aug 25, priced at $158 found 1 day ago
Sun, May 24 - Fri, May 29
BWI
Baltimore
DEN
Denver
$185 Roundtrip, found 6 days ago
$185
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, May 24 from Baltimore to Denver, returning Fri, May 29, priced at $185 found 6 days ago
Tue, May 26 - Thu, Jun 4
IAD
Washington
DEN
Denver
$190 Roundtrip, found 1 day ago
$190
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 26 from Washington to Denver, returning Thu, Jun 4, priced at $190 found 1 day ago
Tue, Jun 2 - Tue, Jun 9
DCA
Washington
DEN
Denver
$324 Roundtrip, found 16 hours ago
$324
Roundtrip
found 16 hours ago
Select JetBlue Airways flight, departing Tue, Jun 2 from Washington to Denver, returning Tue, Jun 9, priced at $324 found 16 hours ago
Wed, Aug 12 - Wed, Aug 19
BWI
Baltimore
DEN
Denver
$325 Roundtrip, found 4 days ago
$325
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 12 from Baltimore to Denver, returning Wed, Aug 19, priced at $325 found 4 days ago
Price found within the past 48 hours. Click for updated prices.
Marriott Denver South at Park Meadows
4.0-star property

Marriott Denver South at Park Meadows

8.8/10 Excellent! (939 reviews)

Jun 17 - Jun 20

3 night stay

Washington (DCA) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Price was $818, price is now $640 per person
$640
per person
found 1 day ago
The restaurant serves the BEST burgers we've ever had. I wasn't pleased about the parking fee, and the rooms are a little aged.

Reviewed on Jan 5, 2025

The Rally Hotel at McGregor Square
4.5-star property

The Rally Hotel at McGregor Square

9.6/10 Exceptional! (1,570 reviews)

Jun 17 - Jun 20

3 night stay

Baltimore (BWI) to Denver (DEN)

Southwest Airlines • Coach

Denver (DEN) to Baltimore (BWI)

Frontier Airlines • Coach
Price was $1,302, price is now $948 per person
$948
per person
found 1 day ago
Lik d total experience.

Reviewed on May 5, 2026

The Mining Exchange
4.0-star property

The Mining Exchange

9.2/10 Wonderful! (1,005 reviews)

Jun 24 - Jun 28

4 night stay

Baltimore (BWI) to Denver (DEN)

Southwest Airlines • Coach

Denver (DEN) to Baltimore (BWI)

Delta • Coach
Price was $1,443, price is now $1,081 per person
$1,081
per person
found 1 day ago
An exceptional hotel (and value),

Reviewed on Mar 30, 2026

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Frequently asked questions

Are there non-stop flights from Washington to Denver?
There are two airlines that fly directly from Washington, DC (IAD-Washington Dulles Intl.) to Denver Intl. Airport (DEN). Book now with United Airlines or Southwest Airlines.
What is the shortest flight from Washington to Denver?
From Washington, the eclectic sights and sounds of Denver are at least 4 hours and 35 minutes away. Secure your favorite seat, or perhaps even one with a bit more legroom, and get to your destination in total comfort.
What airlines fly from Washington to Denver most frequently?
United Airlines (UA) operates 199 flights every month between IAD to Denver Intl. Airport (DEN). Your next great adventure is only a few clicks away. If you can't find the right flight there, take a look at Southwest Airlines (WN). This carrier is a terrific alternative and operates 47 flights between Washington and Denver every month.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.