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 9h 14m. Your travel time can differ by up to . There are 1938 mi between Twin Falls and Washington, D.C. Dulles Intl Airport.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest time of day to fly from TWF to IAD?

When flying from Twin Falls to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$422+ Flights from Twin Falls to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Twin Falls to Dulles Intl

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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 February 16, 2026.

Thu 3/1211:45 am

TWF

IAD

2 stops9h 14m

Delta

Sun 3/157:20 am

IAD

TWF

1 stop9h 14m

Delta

Deal found 2/15

$528

Wed 2/253:44 pm

TWF

IAD

1 stop6h 02m

Delta

Wed 3/47:05 am

IAD

TWF

1 stop9h 54m

Delta

Deal found 2/12

$642

Find flight deals from Twin Falls to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$528 (Delta)
One-way from	$422 (Delta)

Provider with most accurate pricing for Twin Falls Joslin-Washington, D.C. Dulles Intl flight deals.

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Use the filters below to find and compare flights from Twin Falls to Washington, D.C. Dulles Intl Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Thu 3/12

11:45 am-10:59 pm

2 stops9h 14m

Washington, D.C. Dulles Intl

Sun 3/15

7:20 am-2:34 pm

1 stop9h 14m

$528

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Thu 3/12

3:25 pm-11:40 pm

1 stop6h 15m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/16

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.

TWF-IAD

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

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 9h 14m. 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.

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$422+ Cheap flights from Twin Falls (TWF) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Twin Falls to Dulles IntlExplore 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 February 16, 2026.

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 February 16, 2026.

Best flights from Twin Falls to Dulles IntlDiscover carefully curated flight deals from Twin Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 16, 2026.

Discover carefully curated flight deals from Twin Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 16, 2026.

Last-minute flights from Twin Falls to Dulles IntlDiscover last-minute flight deals from Twin Falls to Dulles Intl. Data last updated February 16, 2026 and is based on user searches.

Discover last-minute flight deals from Twin Falls to Dulles Intl. Data last updated February 16, 2026 and is based on user searches.

One-way flights from Twin Falls to Dulles IntlSearch for one-way flight options from Twin Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.

Search for one-way flight options from Twin Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.

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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?

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

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

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

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

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Twin Falls and Dulles Intl flights

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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 February 16, 2026.

Best flights from Twin Falls to Dulles Intl
Discover carefully curated flight deals from Twin Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 16, 2026.

Last-minute flights from Twin Falls to Dulles Intl
Discover last-minute flight deals from Twin Falls to Dulles Intl. Data last updated February 16, 2026 and is based on user searches.

One-way flights from Twin Falls to Dulles Intl
Search for one-way flight options from Twin Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.