Cheap flights from Denver to Washington, D.C. from $109
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Washington, D.C. departing on 6/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Denver to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on Denver to Washington, D.C. Dulles Intl Airport flight tickets
Sun Country Air flights from Denver to Washington, D.C. Dulles Intl Airport
Our best Sun Country Air deals on Denver to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Denver to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, September is the cheapest month to fly from Denver to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $297. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $308.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $458. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Washington, D.C. Dulles Intl Airport for around $616.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from Denver in the morning is the least expensive time of day to depart. momondo users have found prices as low as $445 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $646 on average. Flights to Washington, D.C. Dulles Intl Airport from Denver in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Denver Intl to Washington, D.C. Dulles Intl flight route?
Fly from Denver Intl to Washington, D.C. Dulles Intl for the best Denver Intl - Washington, D.C. Dulles Intl flight prices
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Denver when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $341 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Denver for as low as $275 on momondo.
What cabin class options are available on Denver Intl to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Denver Intl to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Denver Intl to Washington, D.C. Dulles Intl?
Southwest, Allegiant Air, and Sun Country Air are the most popular carriers operating from Denver Intl to Washington, D.C. Dulles Intl
What airlines fly to Washington, D.C. Dulles Intl Airport?
United Airlines, Southwest and Frontier are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Denver according to our data. United Airlines is the first choice among our users, with 79% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Denver to Washington, D.C. Dulles Intl Airport on average per day?
The number of flights available between Denver and Washington, D.C. Dulles Intl Airport is 11 per day as of April 2025. The most frequent departure time is 10:00AM, with 50% of daily flights leaving at noon.
How many flights depart from Denver to Washington, D.C. Dulles Intl Airport on average per week?
As of April 2025, 81 flights take off from Denver and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 28% of weekly flights taking off on this day.
When to book flights from Denver to Washington, D.C. Dulles Intl Airport
Cheap Denver to Washington, D.C. Dulles Intl Airport (DEN to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Denver to Washington, D.C. Dulles Intl Airport
When did momondo last update prices for flights from Denver Intl Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Denver Intl Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Denver Intl Airport to Washington, D.C. Dulles Intl Airport?
As of April 2025, there are 4 operators available to choose from for flights from Denver Intl Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Denver Intl Airport to Washington, D.C. Dulles Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Denver to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Denver to Washington, D.C. Dulles Intl Airport is Boeing 737 MAX 8, representing 15.41% of all bookings. The subsequent popular models are Boeing 737-900 at 13.70%, Boeing 777 at 11.51%, and Boeing 737 MAX 9 at 10.97%.
What is the most popular airline from Denver to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Denver and Washington, D.C. Dulles Intl Airport, the leading airline is United Airlines, making up 79% of the total bookings. Other popular airlines include Southwest with 13%, Frontier with 5%, and Delta with 2%.
Best airlines flying from Denver to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Denver to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $110 | Free Cancellation | Rating 5.9 3,284 reviews | |||
| PriceFrom $144 | Free Cancellation | Rating 8.0 7,929 reviews | |||
| PriceFrom $214 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $218 | Free Cancellation | Rating 8.0 4,295 reviews |
Southwest Flights From Denver to Washington, D.C. Dulles Intl Airport
Southwest flies from Denver to Washington, D.C. Dulles Intl Airport around 15 times per week, with 4,295 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Denver to Washington, D.C. Dulles Intl Airport in the last 72 hours was $218 (round-trip), much lower than the average airfare cost of $324 for Southwest flights on this route.
United Airlines Flights From Denver to Washington, D.C. Dulles Intl Airport
Another popular option for Denver to Washington, D.C. Dulles Intl Airport flights is United Airlines (7.4/10, 8,696 ratings). United Airlines flies from Denver to Washington, D.C. Dulles Intl Airport around 25 times per week, with deals starting from $214 round-trip and rising to an average price of around $352.
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Denver to Washington, D.C.?
Finding the right flight to Washington, D.C. from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.
Can I find flights from Denver to Washington, D.C. with flexible booking policies on momondo?
Flights from Denver to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Denver to Washington, D.C.?
Once you have performed a search for Denver to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Denver to Washington, D.C. right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington, D.C. from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.