What are the cheapest airlines flying from Colorado Springs to Washington, D.C. Dulles Intl Airport round-trip?

Delta, at $237, was found to be the cheapest airline from Colorado Springs to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include American Airlines and Southwest. Delta is 41% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport one-way?

The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $118. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Colorado Springs to Washington, D.C. Dulles Intl Airport for a low price.

What is the cheapest day to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Colorado Springs to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Colorado Springs to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Colorado Springs to Washington, D.C. Dulles Intl Airport are American Airlines, Delta and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 61%.

How far in advance should I book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Users have found that booking a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport at least 53 days early can save you up to 91% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from Colorado Springs to Washington, D.C. Dulles Intl Airport for as little as $241 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $379 for flights departing within the next 3 days.

What is the cheapest month to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport?

September is one of the best times of the year to fly to Washington, D.C. Dulles Intl Airport from Colorado Springs. Prices for September average $263 per person but you can even find prices for as low as $83. The most expensive prices can be found in the month of December. Opting for a September flight can save you 17% on your journey compared to booking in December

What is the cheapest time of day to fly from COS to IAD?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from Colorado Springs to Washington, D.C. Dulles Intl Airport by exploring options for tickets at noon.

What airport do you fly from for flights from Colorado Springs to Washington, D.C. Dulles Intl?

Located just 6.7 mi from the city center, Colorado Springs is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Colorado Springs. Booking flights from Colorado Springs (COS) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 4 different airlines.

Can I find deals for flights from Colorado Springs to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Colorado Springs to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Colorado Springs to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado Springs to Dulles Intl.

Can I find deals for business class flights from Colorado Springs to Dulles Intl?

Yes. Cheapflights offers flight deals from Colorado Springs to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$118+ Flights from Colorado Springs to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Colorado Springs to Dulles Intl

Round-trip from	$237 (Delta)
One-way from	$118 (American Airlines)
Popular in	October
Cheapest in	February
Average price	$321

From Colorado Springs to Washington, D.C. Dulles Intl

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One-way flight from Colorado Springs to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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Find flight deals from Colorado Springs to Dulles Intl

Cheapest flights from Colorado Springs to Dulles Intl
Explore the most affordable flight options available from Colorado Springs to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

mar. 8/196:00 amCOS - IAD

1 stop8h 30mDelta

mar. 8/266:00 amIAD - COS

1 stop8h 12mDelta

Deal found 6/12

$237

mar. 8/1910:52 amCOS - IAD

2 stops10h 04mAmerican Airlines

mar. 8/267:44 amIAD - COS

2 stops10h 44mAmerican Airlines

Deal found 6/12

$247

mié. 7/93:35 pmCOS - IAD

1 stop5h 35mUnited Airlines

mié. 7/168:06 pmIAD - COS

1 stop5h 46mUnited Airlines

Deal found 6/11

$289

mar. 7/111:20 amCOS - IAD

1 stop5h 05mSouthwest

jue. 7/37:50 pmIAD - COS

1 stop5h 25mSouthwest

Deal found 6/12

$388

vie. 6/275:43 pmCOS - IAD

3 stops25h 54mMultiple Airlines

dom. 7/612:34 pmIAD - COS

3 stops29h 45mMultiple Airlines

Deal found 6/10

$630

Best flights from Colorado Springs to Dulles Intl
Discover carefully curated flight deals from Colorado Springs to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated junio 12, 2025.

mar. 8/126:00 amCOS - IAD

1 stop8h 30mDelta

mié. 8/206:00 amIAD - COS

1 stop8h 12mDelta

Deal found 6/11

$237

mar. 8/1210:52 amCOS - IAD

1 stop6h 04mAmerican Airlines

mié. 8/207:44 amIAD - COS

2 stops12h 36mAmerican Airlines

Deal found 6/12

$242

mié. 7/307:20 amCOS - IAD

1 stop7h 30mSouthwest

lun. 8/114:30 pmIAD - COS

1 stop7h 15mSouthwest

Deal found 6/12

$286

mié. 7/93:35 pmCOS - IAD

1 stop5h 35mUnited Airlines

mié. 7/168:06 pmIAD - COS

1 stop5h 46mUnited Airlines

Deal found 6/11

$289

vie. 6/275:43 pmCOS - IAD

3 stops25h 54mMultiple Airlines

dom. 7/612:34 pmIAD - COS

3 stops29h 45mMultiple Airlines

Deal found 6/10

$630

Last-minute flights from Colorado Springs to Dulles Intl
Discover last-minute flight deals from Colorado Springs to Dulles Intl. Data last updated junio 12, 2025 and is based on user searches.

mar. 6/176:00 amCOS - IAD

1 stop8h 33mDelta

mar. 6/246:20 amIAD - COS

1 stop5h 42mDelta

Deal found 6/11

$529

mar. 6/176:01 amCOS - IAD

2 stops9h 10mAmerican Airlines

mar. 6/246:43 pmIAD - COS

1 stop7h 12mAmerican Airlines

Deal found 6/10

$534

mar. 6/175:45 amCOS - IAD

1 stop5h 35mSouthwest

lun. 6/237:50 pmIAD - COS

1 stop5h 25mSouthwest

Deal found 6/12

$669

jue. 6/193:47 pmCOS - IAD

1 stop6h 47mUnited Airlines

lun. 6/237:59 pmIAD - COS

1 stop6h 00mUnited Airlines

Deal found 6/9

$606

vie. 6/275:43 pmCOS - IAD

3 stops25h 54mMultiple Airlines

dom. 7/612:34 pmIAD - COS

3 stops29h 45mMultiple Airlines

Deal found 6/10

$630

mar. 7/111:20 amCOS - IAD

1 stop5h 05mSouthwest

jue. 7/37:50 pmIAD - COS

1 stop5h 25mSouthwest

Deal found 6/12

$388

mié. 7/22:28 pmCOS - IAD

1 stop6h 46mDelta

lun. 7/75:20 pmIAD - COS

1 stop6h 03mDelta

Deal found 6/10

$288

mar. 7/1510:49 amCOS - IAD

2 stops11h 09mAmerican Airlines

mar. 7/226:44 pmIAD - COS

1 stop7h 08mAmerican Airlines

Deal found 6/11

$294

mié. 7/303:35 pmCOS - IAD

1 stop5h 35mUnited Airlines

dom. 8/36:35 amIAD - COS

1 stop6h 33mUnited Airlines

Deal found 6/11

$306

One-way flights from Colorado Springs to Dulles Intl
Search for one-way flight options from Colorado Springs to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated junio 12, 2025.

mar. 9/1612:16 pmCOS - IAD

1 stop8h 33mAmerican Airlines

Deal found 6/12

$118

mié. 8/2010:30 amCOS - IAD

1 stop6h 43mUnited Airlines

Deal found 6/10

$119

mié. 10/1511:35 amCOS - IAD

1 stop9h 30mSouthwest

Deal found 6/10

$124

sáb. 8/96:00 amCOS - IAD

1 stop8h 43mDelta

Deal found 6/10

$141

lun. 10/610:31 amCOS - IAD

3 stops22h 55mMultiple Airlines

Deal found 6/11

$164

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado Springs to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mar. 8/19

6:00 am-4:30 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

mar. 8/26

6:00 am-12:12 pm

1 stop8h 12m

$237

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mar. 8/19

6:02 am-6:52 pm

2 stops10h 50m

Washington, D.C. Dulles Intl

mar. 8/26

7:44 am-6:20 pm

2 stops12h 36m

$247

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 7/30

3:35 pm-11:10 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

dom. 8/3

6:35 am-11:08 am

1 stop6h 33m

$306

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mar. 7/1

11:20 am-6:25 pm

1 stop5h 05m

Washington, D.C. Dulles Intl

jue. 7/3

7:50 pm-11:15 pm

1 stop5h 25m

$388

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 6/27

5:43 pm-9:37 pm

3 stops25h 54m

Washington, D.C. Dulles Intl

dom. 7/6

12:34 pm-4:19 pm

3 stops29h 45m

$630

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 9/10

12:16 pm-10:49 pm

1 stop8h 33m

$118

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 8/20

10:30 am-7:13 pm

1 stop6h 43m

$119

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 7/4

3:00 pm-10:10 pm

1 stop5h 10m

$140

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 8/9

6:00 am-4:43 pm

1 stop8h 43m

$141

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

lun. 7/21

10:15 am-11:24 am

3 stops47h 09m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Colorado Springs to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Colorado Springs with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado Springs to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Colorado Springs to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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.

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Colorado Springs to Washington, D.C., such as Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,287 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,946 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,790 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What airport do you fly from for flights from Colorado Springs to Washington, D.C. Dulles Intl?
Located just 6.7 mi from the city center, Colorado Springs is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Colorado Springs. Booking flights from Colorado Springs (COS) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 4 different airlines.
What are the cheapest airlines flying from Colorado Springs to Washington, D.C. Dulles Intl Airport round-trip?
Delta, at $237, was found to be the cheapest airline from Colorado Springs to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include American Airlines and Southwest. Delta is 41% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $118. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Colorado Springs to Washington, D.C. Dulles Intl Airport for a low price.
Can I find deals for flights from Colorado Springs to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Colorado Springs to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado Springs to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado Springs to Dulles Intl.
Can I find deals for business class flights from Colorado Springs to Dulles Intl?
Yes. Cheapflights offers flight deals from Colorado Springs to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Colorado Springs to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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.

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Alternative routes for Colorado Springs to Dulles Intl

Top 4 airlines flying from Colorado Springs to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$228	Average$348	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$228	Average$380	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$236	Average$288	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$281	Average$418	FlexibilityNo cancel fee	On-time63%

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$118+ Cheap flights from Colorado Springs (COS) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado Springs to Dulles Intl with Cheapflights

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Cheap flight deals from Colorado Springs to Dulles Intl

Round-trip from

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Find flight deals from Colorado Springs to Dulles Intl

Cheapest flights from Colorado Springs to Dulles IntlExplore the most affordable flight options available from Colorado Springs to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

Explore the most affordable flight options available from Colorado Springs to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado Springs to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Colorado Springs to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Colorado Springs with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Colorado Springs to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Colorado Springs to Washington, D.C., such as Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Colorado Springs to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Colorado Springs to Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Colorado Springs to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport one-way?

Can I find deals for flights from Colorado Springs to Dulles Intl that include hotel bookings?

How can I find direct flights from Colorado Springs to Dulles Intl?

Can I find deals for business class flights from Colorado Springs to Dulles Intl?

What is the cheapest month to book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Colorado Springs?

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Alternative routes for Colorado Springs to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Colorado Springs to Dulles Intl

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Cheapest flights from Colorado Springs to Dulles Intl
Explore the most affordable flight options available from Colorado Springs to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.