How long is the flight from Washington, D.C. Dulles Intl Airport to Marion, Illinois?

There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Marion, Illinois in 15h 38m. Fly via American Airlines to get the fastest option. There are 631 mi between Washington, D.C. Dulles Intl Airport and Marion, Illinois.

In terms of precipitation, rainfall in Marion, Illinois ranges from 3.1 - 4.9 inches per month. May is typically the wettest month, when rainfall can reach 4.9 in. September is typically the driest time to visit Marion, Illinois when rainfall is around 3.1 in.

If weather is an important factor for your trip to Marion, Illinois, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Marion, Illinois as you normally would.

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

For a flight from Washington, D.C. Dulles Intl to Marion, you will be flying into Williamson County. Marion Williamson County (MWA) is just 4.6 mi from the center of the city. Williamson County is the only Marion airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Marion Williamson County from Washington, D.C. Dulles Intl on a regular basis.

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

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

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

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

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

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

$608+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Marion, IL

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Cheap flight deals from Dulles Intl to Marion

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Cheapest flights from Dulles Intl to Marion
Explore the most affordable flight options available from Dulles Intl to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 11, 2026.

Wed 11/47:17 pm -

2 stops15h 38m

Wed 11/116:45 am -

2 stops11h 02m

Deal found 10/6

$608

Mon 10/269:15 am -

2 stops16h 03m

Thu 10/296:49 am -

2 stops16h 09m

Deal found 10/8

$1,034

Find flight deals from Dulles Intl to Marion

Round-trip from	$608 (American Airlines)

From Washington, D.C. Dulles Intl to Marion Williamson County

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Washington, D.C.Marion

IAD Washington, D.C. Dulles Intl - MWA Marion Williamson County

IADMWA

Washington, D.C. Dulles Intl

Wed 11/4

7:17 pm-9:55 am

2 stops15h 38m

Marion Williamson County

Wed 11/11

6:45 am-6:47 pm

2 stops11h 02m

$608

Washington, D.C.Marion

IAD Washington, D.C. Dulles Intl - MWA Marion Williamson County

IADMWA

Washington, D.C. Dulles Intl

Mon 10/26

9:15 am-12:18 am

2 stops16h 03m

Marion Williamson County

Thu 10/29

6:49 am-11:58 pm

2 stops16h 09m

$1,034

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Related info for your journey

What airport do you fly into for flights to Marion from Washington, D.C. Dulles Intl?
For a flight from Washington, D.C. Dulles Intl to Marion, you will be flying into Williamson County. Marion Williamson County (MWA) is just 4.6 mi from the center of the city. Williamson County is the only Marion airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Marion Williamson County from Washington, D.C. Dulles Intl on a regular basis.
How long is the flight from Washington, D.C. Dulles Intl Airport to Marion, Illinois?
There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Marion, Illinois in 15h 38m. Fly via American Airlines to get the fastest option. There are 631 mi between Washington, D.C. Dulles Intl Airport and Marion, Illinois.
Can I find deals for flights from Dulles Intl to Marion that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Marion flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Marion?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Marion.
Can I find deals for business class flights from Dulles Intl to Marion?
Yes. Cheapflights offers flight deals from Dulles Intl to Marion by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$608+ Cheap flights from Dulles Intl (IAD) to Marion, IL (MWA)

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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Dulles Intl to Marion

Cheapest flights from Dulles Intl to MarionExplore the most affordable flight options available from Dulles Intl to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 11, 2026.

Explore the most affordable flight options available from Dulles Intl to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 11, 2026.

Best flights from Dulles Intl to MarionDiscover carefully curated flight deals from Dulles Intl to Marion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 11, 2026.

Discover carefully curated flight deals from Dulles Intl to Marion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 11, 2026.

Last-minute flights from Dulles Intl to MarionDiscover last-minute flight deals from Dulles Intl to Marion. Data last updated October 11, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Marion. Data last updated October 11, 2026 and is based on user searches.

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Best time to book a flight from Dulles Intl to Marion

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Related info for your journey

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

How long is the flight from Washington, D.C. Dulles Intl Airport to Marion, Illinois?

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

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

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

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Cheapest flights from Dulles Intl to Marion
Explore the most affordable flight options available from Dulles Intl to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 11, 2026.

Best flights from Dulles Intl to Marion
Discover carefully curated flight deals from Dulles Intl to Marion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 11, 2026.

Last-minute flights from Dulles Intl to Marion
Discover last-minute flight deals from Dulles Intl to Marion. Data last updated October 11, 2026 and is based on user searches.