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Dulles Intl

$443+ 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
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$443
(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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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 7/2$443

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 July 3, 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-2:42 pm

1 stop9h 37m

$443

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Tue 7/15

3:20 pm-11:42 pm

1 stop6h 22m

$523

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with Delta from Twin Falls to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • 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, August is the cheapest month in which you can book a flight from Twin Falls to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Twin Falls to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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 Twin Falls?

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