Route guide · 1,472 miles
Cheap Flights from Denver to Washington
DEN → DCA · Nonstop 3h 30m · Live round-trip fares
If Washington is next on your list, here's the honest picture on fares from Denver. The trip covers about 1,472 miles and takes roughly 3h 30m in the air. Prices on this route reward planners: booking 3–6 weeks ahead is the sweet spot, and the lowest fares tend to sell out fast.
Live fares for DEN → DCA are updating. Use the search below for real-time prices.
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See live fares
Updated daily
Flight time
3h 30m
Nonstop, typical
Distance
1,472 mi
DEN → DCA
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
2
Frontier Airlines, United Airlines
Nonstop flights from Denver to Washington
Want to skip the layover? Nonstops from Denver to Washington are flown by Frontier Airlines, United Airlines, getting you there in about 3h 30m. For the lowest fares, book around 3–6 weeks before departure — last-minute nonstops on this route rarely come cheap.
Booking insights: Denver → Washington
- Distance: 1,472 miles · nonstop flight time: 3h 30m.
- Cheapest upcoming week in the live data starts around Nov 5, with fares from $161.
- Rule of thumb for this route: the sweet spot is usually 3–6 weeks before departure.
- If your dates flex by a day or two, shifting to a midweek departure is the easiest saving there is.
- Set a free Airfare Deal alert instead of checking daily — the best fares can sell out in hours.
Price trend
Cheapest departure weeks ahead
Departing around Nov 5 is currently the cheapest window — about $37 less than the nearest weeks. Based on recent fares found for this route; prices change quickly.
Cheapest month · Denver → Washington
November 2026
Every date's recent round-trip fare, at a glance.
Fares from
$161
Cheapest: Wed, Nov 11 — $161
Get this fare →Recent fares found for specific dates in November 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from Denver to Washington: what you need to know
The flight
Denver to Washington is a proper cross-country leg — 1,472 miles and around 3h 30m in the air nonstop. Download entertainment before you board, bring a full water bottle, and think about the time change: even a two-hour shift can leave you groggy if you land late and start early.
Airlines on this route
Frontier Airlines and United Airlines fly this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Denver (DEN)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Denver airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Washington (DCA)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Washington airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Washington to Denver fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 1,472 miles, booking 3–6 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Flexible dates? Search a few days either side — one day can change the fare a lot.
- Morning flights are delayed less often than evening ones — earlier departures have the best on-time record.
- Basic economy fares often exclude checked bags and seat selection. Price the whole trip, not the headline fare.
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
Denver to Washington flight FAQs
How long is the flight from DEN to DCA?
Plan on about 3h 30m in the air for a nonstop from Denver to Washington — the route runs roughly 1,472 miles. Connecting flights typically add 2–4 hours.
Are there nonstop flights from Denver to Washington?
Yes — look for Frontier Airlines, United Airlines on this route. Nonstop seats are usually priced best 3–6 weeks before departure.
What is the cheapest month to fly from Denver to Washington?
Fares from Denver to Washington tend to ease outside the peak summer and holiday rush — the late-summer and early-fall shoulder weeks are usually kinder on the wallet. Set a free Airfare Deal alert and we'll flag the dips for your dates.
How much are last minute flights from DEN to DCA?
Walking up to this route at the last minute is the expensive way to do it — prices inside 7 days of departure climb fast. The 3–6 weeks booking window is where the value sits.
What is a good round-trip deal from Denver to Washington?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Denver to Washington?
The main carriers on this route are Frontier Airlines, United Airlines. Comparing all of them on the live search below usually surfaces the lowest fare for your dates.
How early should I get to Denver airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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