HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$365+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
SPI — IAD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Springfield 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 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 December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/9. 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 12/246:00 amSPI - IAD
2 stops9h 01mAmerican Airlines
Tue 12/306:35 amIAD - SPI
2 stops12h 09mAmerican Airlines
Deal found 12/9$488
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/256:00 amSPI - IAD
2 stops9h 01mAmerican Airlines
Mon 12/299:12 amIAD - SPI
2 stops9h 32mAmerican Airlines
Deal found 12/10$504
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/123:32 pmSPI - IAD
2 stops6h 36mAmerican Airlines
Tue 12/162:16 pmIAD - SPI
2 stops6h 53mAmerican Airlines
Deal found 12/10$601

Find flight deals from Springfield to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Springfield (SPI) 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 December 12, 2025.

Round-trip from

$365
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$371
From Springfield Capital to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Springfield 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 2,558,603 searches. Data last updated December 12, 2025.
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

Springfield

Fly to

Dulles Intl

Route

Depart

Return

Price

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Mon 2/23

6:00 am-4:10 pm

2 stops9h 10m

Washington, D.C. Dulles Intl

Tue 3/3

3:13 pm-9:57 pm

2 stops7h 44m

$365

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Sat 1/10

6:00 am-5:16 pm

2 stops10h 16m

Washington, D.C. Dulles Intl

Wed 1/14

7:01 am-2:55 pm

2 stops8h 54m

$365

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Tue 1/27

6:00 am-5:16 pm

2 stops10h 16m

Washington, D.C. Dulles Intl

Wed 1/28

1:08 pm-10:14 pm

2 stops10h 06m

$365

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Fri 1/9

6:00 am-5:16 pm

2 stops10h 16m

Washington, D.C. Dulles Intl

Mon 1/12

11:34 am-10:14 pm

2 stops11h 40m

$376

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Fri 1/9

6:00 am-5:16 pm

2 stops10h 16m

Washington, D.C. Dulles Intl

Sun 1/11

7:04 am-2:18 pm

2 stops8h 14m

$409

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Thu 12/25

6:00 am-4:01 pm

2 stops9h 01m

Washington, D.C. Dulles Intl

Mon 12/29

9:12 am-5:44 pm

2 stops9h 32m

$504

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Wed 3/11

5:00 am-4:16 pm

2 stops10h 16m

Washington, D.C. Dulles Intl

Sat 3/14

2:03 pm-11:35 pm

2 stops10h 32m

$541

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Wed 12/24

6:00 am-4:01 pm

3 stops9h 01m

Washington, D.C. Dulles Intl

Tue 12/30

9:12 am-11:35 pm

2 stops15h 23m

$827

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Sun 12/28

6:52 pm-8:21 am

1 stop12h 29m

$390

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Sun 12/28

6:52 pm-6:31 pm

2 stops22h 39m

$507

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 12 results
1
2

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, December is the cheapest month in which you can book a flight from Springfield, Illinois to Washington, D.C. Dulles Intl Airport (average of $98). Flying from Springfield, Illinois to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $259). 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.

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?

    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.

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

    Departing from Springfield, Illinois to Washington, D.C. Dulles Intl Airport will take you 9h 10m. Airlines will cover a distance of 655 mi.

  • 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, December is the cheapest month in which you can book a flight from Springfield, Illinois to Washington, D.C. Dulles Intl Airport (average of $98). Flying from Springfield, Illinois to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $259). 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.

See more FAQs

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 locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Baltimore flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Midway to Dulles Intl flights
Midway to Baltimore flights
St. Louis to Dulles Intl flights
St. Louis to Baltimore flights
Midway to Reagan-National flights
St. Louis to Reagan-National flights
Peoria to Reagan-National flights
Peoria to Dulles Intl flights
Peoria to Baltimore flights
Moline to Dulles Intl flights
Moline to Baltimore flights
Evansville to Dulles Intl flights
Bloomington to Baltimore flights
Springfield to Reagan-National flights
Bloomington to Dulles Intl flights
Bloomington to Reagan-National flights
Moline to Reagan-National flights
Evansville to Reagan-National flights
Evansville to Baltimore flights
Decatur to Baltimore flights
Springfield to Baltimore flights
Champaign to Reagan-National flights
Champaign to Dulles Intl flights
Champaign to Baltimore flights
Dubuque to Reagan-National flights
Dubuque to Baltimore flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.