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Dulles Intl

$442+ Cheap flights from Twin Falls (TWF) 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
TWF — IAD
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Twin Falls to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Twin Falls (TWF) 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 August 18, 2025.

Round-trip from

$442
(Delta)
From Twin Falls Joslin to Washington, D.C. Dulles Intl
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Find flight deals from Twin Falls to Dulles Intl

Cheapest flights from Twin Falls to Dulles Intl
Explore the most affordable flight options available from Twin Falls to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/13:22 pmTWF - IAD
1 stop6h 11mDelta
Sat 10/47:05 amIAD - TWF
1 stop9h 37mDelta
Deal found 8/17$442
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/173:20 pmTWF - IAD
1 stop6h 13mDelta
Tue 10/2112:27 pmIAD - TWF
2 stops11h 57mDelta
Deal found 8/17$483
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:22 pmTWF - IAD
1 stop6h 11mDelta
Mon 9/291:00 pmIAD - TWF
2 stops11h 24mDelta
Deal found 8/17$654
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/213:20 pmTWF - IAD
1 stop6h 12mDelta
Mon 8/257:30 amIAD - TWF
1 stop9h 08mDelta
Deal found 8/16$691
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/23:22 pmTWF - IAD
1 stop6h 11mDelta
Mon 10/61:00 pmIAD - TWF
2 stops11h 24mDelta
Deal found 8/17$703

Cheapflights Fare Finder

 
Customize your flight search to find flights from Twin Falls 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 August 18, 2025.
Use the filters below to find and compare flights from Twin Falls to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Twin Falls

Fly to

Dulles Intl

Route

Depart

Return

Price

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 10/1

3:22 pm-11:33 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Sat 10/4

7:05 am-10:24 pm

1 stop17h 19m

$442

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Fri 10/17

3:20 pm-11:33 pm

1 stop6h 13m

Washington, D.C. Dulles Intl

Tue 10/21

12:27 pm-10:24 pm

2 stops11h 57m

$483

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Thu 9/25

3:22 pm-11:33 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Mon 9/29

1:00 pm-10:24 pm

2 stops11h 24m

$654

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Best time to book a flight from Twin Falls to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Twin Falls 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.

Related info for your journey

Find useful and relevant information for your journey from Twin Falls 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 Twin Falls to Washington, D.C. Dulles Intl?

    For a flight from Twin Falls to Washington, D.C. Dulles Intl, you will be flying from Joslin. Twin Falls Joslin (TWF) is just 5.8 mi from the center of the city. Joslin is the only Twin Falls airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 0 airlines have flights to Washington, D.C. Dulles Intl from Twin Falls Joslin on a regular basis.

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

    Delta can get you from Twin Falls to Washington, D.C. Dulles Intl Airport in just under 6h 11m. Your travel time can differ by up to . There are 1938 mi between Twin Falls and Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Twin Falls to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Twin Falls to Dulles Intl?

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

  • Can I find deals for business class flights from Twin Falls to Dulles Intl?

    Yes. Cheapflights offers flight deals from Twin Falls 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 Twin Falls to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Twin Falls to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Twin Falls 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.

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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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