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 is the cheapest month to fly from Springfield, Illinois to Washington, D.C. Dulles Intl Airport?

December is one of the best times of the year to fly to Washington, D.C. Dulles Intl Airport from Springfield, Illinois. Prices for December average $405 per person but you can even find prices for as low as $250. The most expensive prices can be found in the month of June. Opting for a December flight can save you 64% on your journey compared to booking in June

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

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

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

If you book a flight to Washington, D.C. Dulles Intl from Springfield, you will be flying from Capital, which is the city’s only airport. Springfield Capital (SPI) is located 3.4 mi from the center of Springfield. There are 0 flights from Capital to Washington, D.C. Dulles Intl per day from 0 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Springfield 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.

$411+ Flights from Springfield, IL to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Springfield to Dulles Intl

Round-trip from	$411 (American Airlines)
Popular in	June
Cheapest in	December
Average price	$288

From Springfield Capital to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($55 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Springfield to Dulles Intl

Cheapest flights from Springfield to Dulles Intl
Explore the most affordable flight options available from Springfield to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Thu 8/281:07 pmSPI - IAD

2 stops9h 52mAmerican Airlines

Mon 9/16:34 amIAD - SPI

2 stops7h 03mAmerican Airlines

Deal found 7/29

$411

Best flights from Springfield to Dulles Intl
Discover carefully curated flight deals from Springfield to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Sat 10/252:07 pmSPI - IAD

2 stops8h 43mAmerican Airlines

Mon 10/275:41 pmIAD - SPI

2 stops6h 42mAmerican Airlines

Deal found 7/29

$411

Last-minute flights from Springfield to Dulles Intl
Discover last-minute flight deals from Springfield to Dulles Intl. Data last updated July 29, 2025 and is based on user searches.

Thu 8/71:07 pmSPI - IAD

2 stops9h 52mAmerican Airlines

Wed 8/137:25 pmIAD - SPI

2 stops23h 29mAmerican Airlines

Deal found 7/27

$695

Thu 8/281:07 pmSPI - IAD

2 stops9h 52mAmerican Airlines

Mon 9/16:34 amIAD - SPI

2 stops7h 03mAmerican Airlines

Deal found 7/29

$411

One-way flights from Springfield to Dulles Intl
Search for one-way flight options from Springfield to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Fri 8/151:07 pmSPI - IAD

2 stops20h 54mAmerican Airlines

Deal found 7/27

$436

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Sat 10/25

2:07 pm-11:50 pm

2 stops8h 43m

Washington, D.C. Dulles Intl

Mon 10/27

5:41 pm-11:23 pm

2 stops6h 42m

$411

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Fri 8/15

1:07 pm-11:01 am

2 stops20h 54m

$436

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from Springfield to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Springfield 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 Springfield to Washington, D.C. Dulles Intl Airport

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

Currently, July is the cheapest month in which you can book a flight from Springfield, Illinois to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Springfield, Illinois to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown American Airlines from Springfield to Washington, D.C. Dulles Intl Airport. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

Related info for your journey

What airport do you fly from for flights from Springfield to Washington, D.C. Dulles Intl?
If you book a flight to Washington, D.C. Dulles Intl from Springfield, you will be flying from Capital, which is the city’s only airport. Springfield Capital (SPI) is located 3.4 mi from the center of Springfield. There are 0 flights from Capital to Washington, D.C. Dulles Intl per day from 0 different airlines.
Can I find deals for flights from Springfield to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Springfield to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Springfield to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Springfield to Dulles Intl.
Can I find deals for business class flights from Springfield to Dulles Intl?
Yes. Cheapflights offers flight deals from Springfield 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 Springfield, Illinois to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Springfield, Illinois to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Springfield, Illinois to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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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$411+ Cheap flights from Springfield, IL (SPI) 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Springfield to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Springfield to Dulles Intl

Round-trip from

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Cheapest in

Average price

Find flight deals from Springfield to Dulles Intl

Cheapest flights from Springfield to Dulles IntlExplore the most affordable flight options available from Springfield to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Springfield to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Springfield to Dulles Intl

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

Cheapflights Insights

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

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

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown American Airlines from Springfield to Washington, D.C. Dulles Intl Airport. 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 Springfield 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 Springfield to Washington, D.C. Dulles Intl?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Springfield to Dulles Intl

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Travel Smart

Cheapest flights from Springfield to Dulles Intl
Explore the most affordable flight options available from Springfield to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.