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Dulles Intl

$456+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
TWF — IAD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$456
(Delta)
Provider with most accurate pricing for Twin Falls Joslin-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Twin Falls Joslin-Washington, D.C. Dulles Intl flights.
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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 October 30, 2025.

This Delta deal was found by Cheapflights users on 10/30. 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 11/203:23 pmTWF - IAD
1 stop6h 35mDelta
Thu 11/276:00 amIAD - TWF
2 stops12h 31mDelta
Deal found 10/30$502

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 October 30, 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 2/25

3:20 pm-11:50 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Wed 3/4

7:15 am-2:46 pm

1 stop9h 31m

$456

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Thu 11/20

3:23 pm-11:58 pm

1 stop6h 35m

Washington, D.C. Dulles Intl

Thu 11/27

6:00 am-4:31 pm

2 stops12h 31m

$502

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Fri 1/2

1:15 pm-11:08 pm

2 stops7h 53m

$700

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

  • Most accurate provider: When it comes to deals on Twin Falls-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Twin Falls-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Twin Falls-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Twin Falls-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Twin Falls-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 30m. 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.

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
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

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