Use the A Line train for a quick 37-minute ride from DEN to Union Station, avoiding expensive taxis and rideshares.
Round-trip from | $177 (Southwest) |
---|---|
One-way from | $104 (American Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $352 |
Good round-trip deal | $348 or less |
Good one-way deal | $217 or less |
Fly from
Fly to
Route
Depart
Return
Price
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Sat 8/30
5:30 pm-10:50 pm
Nonstop3h 20m
Washington, D.C. Dulles Intl
Sat 9/6
5:05 pm-6:55 pm
Nonstop3h 50m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Tue 10/14
11:59 pm-5:22 am
Nonstop3h 23m
Washington, D.C. Dulles Intl
Sat 10/18
5:36 pm-7:36 pm
Nonstop4h 00m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Sat 9/20
11:59 pm-8:46 am
1 stop6h 47m
Washington, D.C. Dulles Intl
Sat 9/27
12:48 pm-5:02 pm
1 stop6h 14m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Fri 9/12
12:04 am-6:24 pm
1 stop16h 20m
Washington, D.C. Dulles Intl
Sat 9/20
7:14 pm-8:09 am
1 stop14h 55m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Thu 9/25
12:45 am-8:59 am
1 stop6h 14m
Washington, D.C. Dulles Intl
Mon 9/29
7:22 pm-11:59 pm
1 stop6h 37m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Wed 8/27
6:10 am-6:52 pm
2 stops10h 42m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Wed 8/20
12:45 pm-9:39 pm
1 stop6h 54m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Fri 9/12
8:40 am-4:10 pm
1 stop5h 30m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Thu 9/11
12:59 am-9:09 am
1 stop6h 10m
DenverWashington, D.C.
DEN - IAD
DENIAD
Denver Intl
Tue 9/2
8:20 am-1:40 pm
Nonstop3h 20m
The price you pay for your flight from Denver to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, August is the cheapest month in which you can book a flight from Denver to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Denver to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.
It’s optimal to fly from Denver to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the evening.
Travelers seeking maximum savings on their Denver to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from DEN to IAD are scheduled on a Monday (33 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (26 on average).
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Gina,Jul 2025
LAS - DEN
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Gina,Jul 2025
LAS - DEN
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Gina,Jul 2025
LAS - DEN
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Gina,Jul 2025
LAS - DEN
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Gina,Jul 2025
LAS - DEN
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Gina,Jul 2025
LAS - DEN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$116 | Average$239 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$144 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$190 | Average$309 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$214 | Average$355 | FlexibilityNo cancel fee | On-time69% |