$278+ Cheap flights from Columbia, MO (COU) to Dulles Intl (IAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
COU — IAD
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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Find cheap flights from Columbia to Dulles Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Columbia to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Columbia to Dulles IntlExplore the most affordable flight options available from Columbia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
Explore the most affordable flight options available from Columbia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:19 am -
1 stop5h 25m
Sun 10/46:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:12 am -
1 stop7h 31m
Sun 11/229:33 am -
2 stops12h 56m
Deal found 9/2![American Airlines logo]()
$314
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:00 am -
1 stop7h 01m
Sun 12/138:35 am -
1 stop6h 49m
Deal found 9/3![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:43 pm -
1 stop6h 09m
Sun 10/186:10 am -
1 stop5h 29m
Deal found 9/7![United Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:15 am -
1 stop4h 33m
Tue 9/225:15 pm -
1 stop6h 40m
Deal found 9/3![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:15 am -
2 stops11h 32m
Sat 12/1211:48 am -
2 stops11h 27m
Deal found 9/3![American Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:15 am -
1 stop4h 40m
Sun 10/116:10 am -
1 stop5h 29m
Deal found 9/5![United Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:23 am -
2 stops7h 24m
Sun 12/136:02 pm -
1 stop5h 40m
Deal found 9/3![American Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 am -
1 stop6h 44m
Sat 10/176:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$388
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:44 am -
2 stops10h 47m
Mon 9/146:15 pm -
1 stop4h 53m
Deal found 9/3![American Airlines logo]()
$404
Best flights from Columbia to Dulles IntlDiscover carefully curated flight deals from Columbia to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from Columbia to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:15 am -
1 stop5h 29m
Thu 10/86:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:00 am -
1 stop7h 01m
Sun 12/138:35 am -
1 stop6h 49m
Deal found 9/3![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:43 pm -
1 stop6h 09m
Sun 10/186:10 am -
1 stop5h 29m
Deal found 9/7![United Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:15 am -
1 stop4h 33m
Tue 9/225:15 pm -
1 stop6h 40m
Deal found 9/3![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:00 am -
1 stop7h 33m
Tue 11/108:23 am -
1 stop6h 55m
Deal found 9/3![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 am -
1 stop6h 44m
Sat 10/176:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$388
Last-minute flights from Columbia to Dulles IntlDiscover last-minute flight deals from Columbia to Dulles Intl. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Columbia to Dulles Intl. Data last updated September 7, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:44 am -
2 stops10h 47m
Mon 9/146:15 pm -
1 stop4h 53m
Deal found 9/3![American Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:15 am -
1 stop4h 34m
Thu 10/86:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:15 am -
1 stop4h 33m
Tue 9/225:15 pm -
1 stop6h 40m
Deal found 9/3![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:15 am -
1 stop5h 29m
Sun 9/276:10 am -
1 stop5h 29m
Deal found 9/5![United Airlines logo]()
$440
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:19 am -
1 stop5h 25m
Sun 10/46:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:44 am -
2 stops10h 47m
Sat 10/109:15 am -
2 stops12h 40m
Deal found 9/3![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:15 am -
1 stop4h 40m
Sun 10/116:10 am -
1 stop5h 29m
Deal found 9/5![United Airlines logo]()
$373
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 am -
1 stop6h 44m
Sat 10/176:10 am -
1 stop5h 29m
Deal found 9/3![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:43 pm -
1 stop6h 09m
Sun 10/186:10 am -
1 stop5h 29m
Deal found 9/7![United Airlines logo]()
$357
One-way flights from Columbia to Dulles IntlSearch for one-way flight options from Columbia to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from Columbia to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:15 am -
1 stop5h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![United Airlines logo]()
$278
This deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:15 am -
1 stop6h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:15 am -
1 stop6h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![United Airlines logo]()
$373
Find flight deals from Columbia to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from Columbia (COU) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $308 (United Airlines) |
One-way from | $278 (United Airlines) |
Popular in | March |
Cheapest in | January |
Average price | $536 |
Cheapflights Fare Finder
Customize your flight search to find flights from Columbia to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 7, 2026.
Use the filters below to find and compare flights from Columbia to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Thu 10/1
11:15 am-5:44 pm
1 stop5h 29m
Washington, D.C. Dulles Intl
Thu 10/8
6:10 am-10:39 am
1 stop5h 29m
$308
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Tue 12/8
8:00 am-4:01 pm
1 stop7h 01m
Washington, D.C. Dulles Intl
Sun 12/13
8:35 am-2:24 pm
1 stop6h 49m
$353
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Thu 10/15
3:43 pm-10:52 pm
1 stop6h 09m
Washington, D.C. Dulles Intl
Sun 10/18
6:10 am-10:39 am
1 stop5h 29m
$357
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Fri 9/18
6:15 am-11:48 am
1 stop4h 33m
Washington, D.C. Dulles Intl
Tue 9/22
5:15 pm-10:55 pm
1 stop6h 40m
$359
Quickest round-trip
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Wed 9/23
6:15 am-1:55 pm
1 stop6h 40m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$363
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Sat 11/7
8:00 am-4:33 pm
1 stop7h 33m
Washington, D.C. Dulles Intl
Tue 11/10
8:23 am-2:18 pm
1 stop6h 55m
$388
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Wed 10/14
6:15 am-1:59 pm
1 stop6h 44m
Washington, D.C. Dulles Intl
Sat 10/17
6:10 am-10:39 am
1 stop5h 29m
$388
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Thu 10/15
3:43 pm-7:10 am
2 stops14h 27m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$412
ColumbiaWashington, D.C.
COU Columbia Regional - IAD Washington, D.C. Dulles Intl
COUIAD
Columbia Regional
Sat 9/26
11:19 am-11:49 am
2 stops23h 30m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$446
Sorted by cheapest first
Compare providers for flights from Columbia to Dulles Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Columbia to Dulles Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Columbia, Missouri-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Columbia, Missouri-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Columbia, Missouri-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Columbia, Missouri-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Columbia, Missouri-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Columbia to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Columbia with our price prediction graph.
COU-IAD
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.
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated September 7, 2026.
See what other customers who have flown with United Airlines from Columbia to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Food
6.6
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Crew
8.1
Food
6.6
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from Columbia to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Arlington
Owings Mills
Tysons
Lanham
Reston
Chantilly
Herndon
Rockville
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
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Silver Spring
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Dulles Intl
Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
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Columbia and Dulles Intl flights
Browse other Columbia and Dulles Intl flight options. Last updated on September 7, 2026.
Other flights from Columbia
Browse through other flights departing from Columbia. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Columbia to Dulles Intl
Discover the top airline that operate flights from Columbia to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$212 | Average$353 | FlexibilityNo cancel fee | On-time69% |