TWF - IAD

$537 Find Cheap Flights from Twin Falls to Washington Dulles Airport - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$537
Typical prices: $399-$617
Multiple Airlines
Fri 12/21Mon 12/31
TWF - IAD • 2 stops
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Booking Insights
Flight Deals

Cheap Flights from Twin Falls to Dulles Intl (TWF-IAD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Twin Falls to Dulles Intl

Mon, Dec 21 - Thu, Dec 31
Multiple Airlines Logo
1:45 pm - 9:56 amTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
42h 11m2 stops Las Vegas Harry Reid Intl Dallas/Fort Worth
Multiple Airlines Logo
8:20 pm - 12:00 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
17h 40m1 stop Las Vegas Harry Reid Intl
$537Multiple Airlines
Mon, Dec 21 - Thu, Dec 31
Multiple Airlines Logo
1:45 pm - 7:27 amTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
15h 42m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:20 pm - 12:00 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
17h 40m1 stop Las Vegas Harry Reid Intl
$539Multiple Airlines
Sat, Oct 10 - Sat, Oct 17
Delta Logo
1:17 pm - 11:26 pmTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
8h 09m2 stops Salt Lake City Minneapolis St Paul
Delta Logo
6:05 am - 12:25 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
8h 20m2 stops Detroit Metropolitan Wayne County Salt Lake City
$739Delta
Mon, Dec 21 - Thu, Dec 31
Delta Logo
1:17 pm - 11:35 pmTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
8h 18m1 stop Salt Lake City
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
7h 18m1 stop Salt Lake City
$791Delta
Mon, Dec 21 - Thu, Dec 31
Delta Logo
1:17 pm - 11:35 pmTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
8h 18m1 stop Salt Lake City
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
7h 18m1 stop Salt Lake City
$791Delta
Mon, Dec 21 - Thu, Dec 31
Delta Logo
1:17 pm - 12:37 amTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
9h 20m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
7h 18m1 stop Salt Lake City
$797Delta
Mon, Dec 21 - Thu, Dec 31
Delta Logo
1:17 pm - 12:37 amTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
9h 20m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
7h 18m1 stop Salt Lake City
$797Delta
Sat, Oct 10 - Sat, Oct 17
Delta Logo
1:17 pm - 11:26 pmTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
8h 09m2 stops Salt Lake City Minneapolis St Paul
Delta Logo
6:13 am - 12:25 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
8h 12m1 stop Salt Lake City
$814Delta
Tue, Dec 22 - Wed, Dec 30
Delta Logo
1:17 pm - 11:35 pmTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
8h 18m1 stop Salt Lake City
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
7h 18m1 stop Salt Lake City
$874Delta
Tue, Dec 22 - Wed, Dec 30
Delta Logo
1:17 pm - 11:27 pmTWF  Twin Falls Joslin-IAD Washington, D.C. Dulles Intl
8h 10m2 stops Salt Lake City Minneapolis St Paul
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-TWF Twin Falls Joslin
7h 18m1 stop Salt Lake City
$880Delta
Booking Insights

Price, demand and travel trends for Twin Falls to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Twin Falls to Washington, D.C. Dulles Intl Airport with more confidence.

What is the cheapest airline to fly from Twin Falls to Washington, D.C. Dulles Intl Airport?

Delta ($739) offered the cheapest round-trip ticket from Twin Falls to Washington, D.C. Dulles Intl Airport in the last 5 days.

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When to book flights from Twin Falls to Dulles Intl

Are your dates flexible? Find out the best times to travel from Twin Falls to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Twin Falls to Washington, D.C. Dulles Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Twin Falls to Washington, D.C. Dulles Intl Airport?

    Flights from Twin Falls to Washington, D.C. Dulles Intl Airport usually depart from Twin Falls Joslin (TWF) and arrive at Washington, D.C. Dulles Intl (IAD).

  • What cabin classes can I book on flights from Twin Falls to Washington, D.C. Dulles Intl Airport?

    Only Economy Class is available on flights from Twin Falls to Washington, D.C. Dulles Intl Airport.

  • Which airports do connecting flights from Twin Falls to Washington, D.C. Dulles Intl Airport pass through?

    Most connecting flights from Twin Falls to Washington, D.C. Dulles Intl Airport pass through Salt Lake City (SLC), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

  • Can I save money by using flexible dates for flights from Twin Falls to Washington, D.C. Dulles Intl Airport?

    Yes. Being flexible with your travel dates can save you up to 36% on the Twin Falls to Washington, D.C. Dulles Intl Airport route. Wednesday is the cheapest departure day at $399 round-trip on average, while Thursday is the most expensive at $617, a difference of $218. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

  • Do I need a passport to fly from Twin Falls to Washington, D.C. Dulles Intl Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Twin Falls to Washington, D.C. Dulles Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $537 to $2,966. That means the highest observed fare was about 6x higher than the lowest one.

  • What is the time difference between Twin Falls and Washington, D.C. Dulles Intl Airport?

    Washington, D.C. Dulles Intl Airport is 2 hours ahead of Twin Falls (Eastern Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
    • Dollar
    • Budget
    • Hertz
    • Sixt
    • Thrifty

Your guide to booking Twin Falls to Washington, D.C. Dulles Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Thursday. On this route, Wednesday flights average $399 - about $218 less than Thursday (35% savings) based on the last 12 months.

More options for your flight from Twin Falls to Dulles Intl

Complete your trip to Washington, D.C. with a hotel stay or car rental

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