For a quick check-in at DEN, use the DEN Reserve to book a security screening time online, bypassing long lines.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $131 (Kiwi.com) |
One-way from | $73 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $258 |
Good round-trip deal | $176 or less |
Good one-way deal | $92 or less |
Fly from
Fly to
Route
Depart
Return
Price
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Mon 12/8
12:50 am-9:10 am
1 stop6h 20m
Washington, D.C. Reagan-National
Fri 12/12
6:58 pm-11:17 pm
1 stop6h 19m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Thu 12/4
12:50 am-9:10 am
1 stop6h 20m
Washington, D.C. Reagan-National
Tue 12/9
6:59 am-12:11 pm
1 stop7h 12m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Thu 12/4
12:50 am-9:10 am
1 stop6h 20m
Washington, D.C. Reagan-National
Fri 12/12
6:58 pm-11:17 pm
1 stop6h 19m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Tue 3/10
11:13 pm-11:00 am
1 stop9h 47m
Washington, D.C. Reagan-National
Wed 3/11
4:59 pm-10:15 pm
1 stop7h 16m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Fri 12/5
10:20 am-6:05 pm
1 stop5h 45m
Washington, D.C. Reagan-National
Fri 12/12
6:00 am-10:45 am
2 stops6h 45m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Sat 1/24
7:00 am-9:59 pm
1 stop12h 59m
Washington, D.C. Reagan-National
Mon 2/2
9:59 am-11:35 pm
2 stops15h 36m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Fri 12/5
8:20 pm-4:08 pm
1 stop17h 48m
Washington, D.C. Reagan-National
Tue 12/9
6:59 pm-6:03 pm
2 stops25h 04m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Wed 12/3
2:25 pm-10:50 pm
1 stop6h 25m
Washington, D.C. Reagan-National
Mon 12/8
6:00 am-11:15 am
2 stops7h 15m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Thu 1/8
7:00 am-9:59 pm
1 stop12h 59m
Washington, D.C. Reagan-National
Mon 1/12
9:59 am-11:35 pm
2 stops15h 36m
DenverWashington, D.C.
DEN - DCA
DENDCA
Denver Intl
Thu 12/11
6:00 am-9:59 pm
1 stop13h 59m
Washington, D.C. Reagan-National
Mon 12/15
6:59 pm-2:46 pm
2 stops21h 47m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
The best time to book flights from Denver to Washington, D.C. Reagan-National Airport is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, February is the cheapest month in which you can book a flight from Denver to Washington, D.C. Reagan-National Airport (average of $81). Flying from Denver to Washington, D.C. Reagan-National Airport in May is currently the most expensive (average of $144). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike at noon, when flights are generally more expensive, you can save up to 23% on flights from Denver to Washington, D.C. Reagan-National Airport by exploring options for tickets in the morning.
Travelers seeking maximum savings on their Denver to Washington, D.C. Reagan-National Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Boarding
Crew
Entertainment
Overall
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Food
Boarding
Crew
Entertainment
Overall
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Food
Boarding
Crew
Entertainment
Overall
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Food
Boarding
Crew
Entertainment
Overall
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Food
Boarding
Crew
Entertainment
Overall
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
Food
Boarding
Crew
Entertainment
Overall
Comfort
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$181 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$196 | Average$288 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$216 | Average$422 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$237 | Average$367 | FlexibilityNo cancel fee | On-time63% |