What is the cheapest airline to fly from Columbus to Washington, D.C. Dulles Intl Airport round-trip?

Currently priced at $178, United Airlines will fly you from Columbus to Washington, D.C. Dulles Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Users have found that United Airlines is 50% cheaper than the other options available to this destination.

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.

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).

What are the cheapest flights from Columbus to Washington, D.C. Dulles Intl Airport?

While on average a flight from Columbus to Washington, D.C. Dulles Intl Airport is generally $524, our data shows the cheapest flight currently is $151. When looking at the most popular route, (Columbus - Washington, D.C. Dulles Intl), you can expect to pay $181 for that flight.

What are the most reliable airlines from Columbus to Washington, D.C. Dulles Intl Airport?

Consider Sun Country Air (100%), Ethiopian Air (97%) or ANA (97%) when booking your flight. These represent the most reliable airlines when flying from Columbus to Washington, D.C. Dulles Intl Airport.

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

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

How can I find direct flights from Columbus to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Columbus 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.

Find Cheap Flights from Columbus to Washington, D.C. Dulles Intl Airport

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Cheapflights Tip: The best prices from Columbus to Washington, D.C. Dulles Intl are usually found in January or May, booked 84 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Find flight deals from Columbus to Dulles Intl

Popular in	September
Cheapest in	January
Average price	$451

Highest demand for flights based on searches. 17% potential increase in price ($79 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Best time to book a flight from Columbus to Dulles Intl

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

C01-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.

Cheapflights Insights

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

How far ahead should I book a flight from Columbus to Washington, D.C. Dulles Intl Airport?

The price you pay for your flight from Columbus 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 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Columbus to Washington, D.C. Dulles Intl Airport (average of $268). Flying from Columbus to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $473). 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.

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

It’s optimal to fly from Columbus to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight in the afternoon.

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

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

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with United Airlines from Columbus 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.

United Airlines

7.3

Good

10,422 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.3

Good

10,422 reviews

United Airlines

7.3

Good

10,422 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

What is the cheapest airline to fly from Columbus to Washington, D.C. Dulles Intl Airport round-trip?
Currently priced at $178, United Airlines will fly you from Columbus to Washington, D.C. Dulles Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Users have found that United Airlines is 50% cheaper than the other options available to this destination.
What are the most reliable airlines from Columbus to Washington, D.C. Dulles Intl Airport?
Consider Sun Country Air (100%), Ethiopian Air (97%) or ANA (97%) when booking your flight. These represent the most reliable airlines when flying from Columbus to Washington, D.C. Dulles Intl Airport.
What are the cheapest flights from Columbus to Washington, D.C. Dulles Intl Airport?
While on average a flight from Columbus to Washington, D.C. Dulles Intl Airport is generally $524, our data shows the cheapest flight currently is $151. When looking at the most popular route, (Columbus - Washington, D.C. Dulles Intl), you can expect to pay $181 for that flight.
Can I find deals for flights from Columbus to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Columbus to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Columbus to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Columbus to Dulles Intl.
Can I find deals for business class flights from Columbus to Dulles Intl?
Yes. Cheapflights offers flight deals from Columbus 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 Columbus to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Columbus to Washington, D.C. Dulles Intl Airport (average of $268). Flying from Columbus to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $473). 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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Top airline flying from Columbus to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$178	Average$315	FlexibilityNo cancel fee	On-time69%

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Cheap flights from Columbus to Dulles Intl (IAD)

Find cheap flights from Columbus to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Columbus to Dulles Intl

Popular in

Cheapest in

Average price

Best time to book a flight from Columbus to Dulles Intl

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

Cheapflights Insights

How far ahead should I book a flight from Columbus to Washington, D.C. Dulles Intl Airport?

The price you pay for your flight from Columbus 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 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

It’s optimal to fly from Columbus to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight in the afternoon.

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

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with United Airlines from Columbus 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.

Related info for your journey

What is the cheapest airline to fly from Columbus to Washington, D.C. Dulles Intl Airport round-trip?

What are the most reliable airlines from Columbus to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Columbus to Washington, D.C. Dulles Intl Airport?

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

How can I find direct flights from Columbus to Dulles Intl?

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Complete your trip

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 October 23, 2026.

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Columbus and Dulles Intl flights

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