Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Twin Falls to Washington, D.C. from $447

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Twin Falls to Washington, D.C. departing on 4/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Twin Falls to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:15 am - 11:51 pmTWF-IAD
15h 36m1 stop
Delta Logo
7:15 am - 10:14 pmIAD-TWF
16h 59m1 stop
$447Delta
Find Deal
Wed, Apr 29 - Sat, May 2
Delta Logo
6:15 am - 11:51 pmTWF-IAD
15h 36m1 stop
Delta Logo
12:00 pm - 10:14 pmIAD-TWF
12h 14m2 stops
$452Delta
Find Deal
Wed, Apr 29 - Sat, May 2
Delta Logo
3:42 pm - 11:48 pmTWF-IAD
6h 06m1 stop
Delta Logo
7:05 am - 3:02 pmIAD-TWF
9h 57m1 stop
$456Delta
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
3:42 pm - 11:48 pmTWF-IAD
6h 06m1 stop
Delta Logo
7:00 am - 3:02 pmIAD-TWF
10h 02m2 stops
$508Delta
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
6:15 am - 10:59 pmTWF-IAD
14h 44m2 stops
Delta Logo
5:00 pm - 10:14 pmIAD-TWF
31h 14m2 stops
$522Delta
Find Deal
Wed, Apr 29 - Sat, May 2
Delta Logo
3:23 pm - 11:58 pmTWF-IAD
6h 35m1 stop
Delta Logo
7:18 am - 4:31 pmIAD-TWF
11h 13m2 stops
$533Delta
Find Deal
Thu, Nov 20 - Thu, Nov 27
Delta Logo
6:00 am - 5:04 pmTWF-IAD
9h 04m2 stops
Delta Logo
6:00 am - 4:31 pmIAD-TWF
12h 31m2 stops
$573Delta
Find Deal
Thu, Nov 20 - Thu, Nov 27
Delta Logo
6:10 am - 6:12 pmTWF-IAD
10h 02m2 stops
Delta Logo
7:00 am - 3:02 pmIAD-TWF
10h 02m2 stops
$754Delta
Find Deal
Wed, Feb 25 - Wed, Mar 4

Delta flights from Twin Falls to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Twin Falls to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Apr 29
TWF6:15 amTwin Falls Joslin
15h 36m
1 stop
IAD11:51 pmWashington, D.C. Dulles Intl
May 2
IAD7:15 amWashington, D.C. Dulles Intl
16h 59m
1 stop
TWF10:14 pmTwin Falls Joslin
$447
Find similar
Delta
Apr 29
TWF6:15 amTwin Falls Joslin
15h 36m
1 stop
IAD11:51 pmWashington, D.C. Dulles Intl
May 2
IAD12:00 pmWashington, D.C. Dulles Intl
12h 14m
2 stops
TWF10:14 pmTwin Falls Joslin
$452
Find similar
Delta
Feb 25
TWF3:42 pmTwin Falls Joslin
6h 06m
1 stop
IAD11:48 pmWashington, D.C. Dulles Intl
Mar 4
IAD7:05 amWashington, D.C. Dulles Intl
9h 57m
1 stop
TWF3:02 pmTwin Falls Joslin
$456
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Twin Falls to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated November 4, 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

Fly to

Route

Depart

Return

Price

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 4/29

6:15 am-11:51 pm

1 stop15h 36m

Washington, D.C. Dulles Intl

Sat 5/2

7:15 am-10:14 pm

1 stop16h 59m

$447

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 4/29

6:15 am-11:51 pm

1 stop15h 36m

Washington, D.C. Dulles Intl

Sat 5/2

12:00 pm-10:14 pm

2 stops12h 14m

$452

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 2/25

3:42 pm-11:48 pm

1 stop6h 06m

Washington, D.C. Dulles Intl

Wed 3/4

7:05 am-3:02 pm

1 stop9h 57m

$456

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 2/25

3:42 pm-11:48 pm

1 stop6h 06m

Washington, D.C. Dulles Intl

Wed 3/4

7:00 am-3:02 pm

2 stops10h 02m

$508

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 4/29

6:15 am-10:59 pm

2 stops14h 44m

Washington, D.C. Dulles Intl

Sat 5/2

5:00 pm-10:14 pm

2 stops31h 14m

$522

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

7:18 am-4:31 pm

2 stops11h 13m

$533

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Thu 11/20

6:00 am-5:04 pm

2 stops9h 04m

Washington, D.C. Dulles Intl

Thu 11/27

6:00 am-4:31 pm

2 stops12h 31m

$573

Twin FallsWashington, D.C.

TWF - IAD

TWFIAD

Twin Falls Joslin

Wed 2/25

6:10 am-6:12 pm

2 stops10h 02m

Washington, D.C. Dulles Intl

Wed 3/4

7:00 am-3:02 pm

2 stops10h 02m

$754

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Twin Falls to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Twin Falls to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Twin Falls to Washington, D.C. Dulles Intl Airport (TWF to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Twin Falls to Washington, D.C. Dulles Intl Airport

Direct flights

None
There are no direct flights from Twin Falls to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Twin Falls to Washington, D.C. Dulles Intl Airport.
Search flight deals

  • How far is Twin Falls Joslin to Washington, D.C. Dulles Intl by plane?

    Washington, D.C. Dulles Intl is 1936.2 mi away from Twin Falls Joslin. Typically, this will take 6h 06m by plane in normal conditions.

  • When did momondo last update prices for flights from Twin Falls Joslin Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Twin Falls Joslin Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Twin Falls Joslin Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Twin Falls Joslin Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Twin Falls to Washington, D.C. Dulles Intl Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Twin Falls from Washington, D.C. Dulles Intl Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Twin Falls to Washington, D.C. Dulles Intl Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Gaithersburg
Fairfax
Sterling

Why use momondo?

Why should I use momondo to find a flight deal from Twin Falls to Washington, D.C.?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Twin Falls to Washington, D.C.. momondo saves you time and could save you money on your trip.

Can I find flights from Twin Falls to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Twin Falls which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Twin Falls to Washington, D.C.?

momondo helps you find the best flight between Twin Falls and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Twin Falls to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Twin Falls to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 12/4
Thu 12/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.