HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$208+ Cheap flights from Idaho Falls (IDA) 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — IAD
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho Falls to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho Falls to Dulles Intl

Cheapest flights from Idaho Falls to Dulles Intl
Explore the most affordable flight options available from Idaho Falls to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:00 am
IDA
-
IAD
1 stop6h 27m
United Airlines
Sat 10/3110:22 am
IAD
-
IDA
1 stop9h 00m
United Airlines
Deal found 1/20$334
This Orbitz deal was found by Cheapflights users on 1/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:58 pm
IDA
-
IAD
1 stop19h 28m
Alaska Airlines
Sat 2/147:05 am
IAD
-
IDA
1 stop18h 31m
Alaska Airlines
Deal found 1/20$395
This Alaska Airlines deal was found by Cheapflights users on 1/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:20 pm
IDA
-
IAD
1 stop22h 51m
Alaska Airlines
Fri 3/207:11 pm
IAD
-
IDA
1 stop29h 41m
Alaska Airlines
Deal found 1/18$439
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:20 pm
IDA
-
IAD
2 stops22h 02m
Alaska Airlines
Thu 3/197:11 pm
IAD
-
IDA
1 stop24h 08m
Alaska Airlines
Deal found 1/20$444
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:03 am
IDA
-
IAD
2 stops12h 27m
American Airlines
Mon 2/166:00 am
IAD
-
IDA
1 stop9h 48m
American Airlines
Deal found 1/19$461
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/107:20 am
IDA
-
IAD
2 stops13h 59m
American Airlines
Sat 2/142:03 pm
IAD
-
IDA
2 stops11h 21m
American Airlines
Deal found 1/20$502
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:20 am
IDA
-
IAD
2 stops13h 52m
American Airlines
Mon 2/96:00 am
IAD
-
IDA
1 stop9h 37m
American Airlines
Deal found 1/20$520

Find flight deals from Idaho Falls to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) 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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$395
(Orbitz)

One-way from

$208
(United Airlines)

Popular in

September

Cheapest in

October

Average price

$675
Provider with most accurate pricing for Idaho Falls Fanning Field-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Washington, D.C. Dulles Intl flights.
Search Deals
From Idaho Falls Fanning Field to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Idaho Falls Fanning Field to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($129 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($89 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 January 21, 2026.
Use the filters below to find and compare flights from Idaho Falls to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Idaho Falls

Fly to

Dulles Intl

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 2/10

6:58 pm-4:26 pm

1 stop19h 28m

Washington, D.C. Dulles Intl

Sat 2/14

7:05 am-11:36 pm

1 stop18h 31m

$395

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 3/17

5:20 pm-6:11 pm

1 stop22h 51m

Washington, D.C. Dulles Intl

Fri 3/20

7:11 pm-10:52 pm

1 stop29h 41m

$439

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 3/17

5:20 pm-5:22 pm

2 stops22h 02m

Washington, D.C. Dulles Intl

Thu 3/19

7:11 pm-5:19 pm

1 stop24h 08m

$444

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 2/13

6:03 am-8:30 pm

2 stops12h 27m

Washington, D.C. Dulles Intl

Mon 2/16

6:00 am-1:48 pm

1 stop9h 48m

$461

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 2/10

7:20 am-11:19 pm

2 stops13h 59m

Washington, D.C. Dulles Intl

Sat 2/14

2:03 pm-11:24 pm

2 stops11h 21m

$502

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 2/5

7:20 am-11:12 pm

2 stops13h 52m

Washington, D.C. Dulles Intl

Mon 2/9

6:00 am-1:37 pm

1 stop9h 37m

$520

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 2/13

2:40 pm-11:19 pm

1 stop6h 39m

Washington, D.C. Dulles Intl

Mon 2/16

9:50 am-3:40 pm

1 stop7h 50m

$533

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 6/27

4:15 pm-12:32 am

1 stop6h 17m

$208

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 2/2

9:20 pm-2:09 pm

3 stops38h 49m

$236

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 2/5

1:15 pm-11:48 pm

1 stop8h 33m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 16 results
1
2

Compare providers for flights from Idaho Falls to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Idaho 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 Idaho 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 Idaho 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 Idaho Falls-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust Expedia the most. Expedia 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 Idaho 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 Idaho Falls to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Idaho 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 January 21, 2026.
Peruse reviews from past customers who have flown with United Airlines from Idaho 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.
United Airlines
7.4
Good
9,191 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Idaho 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 Idaho Falls to Washington, D.C. Dulles Intl?

    For a flight from Idaho Falls to Washington, D.C. Dulles Intl, you will be flying from Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city. Fanning Field is the only Idaho Falls airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 1 airline has flights to Washington, D.C. Dulles Intl from Idaho Falls Fanning Field on a regular basis.

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

    Alaska Airlines can get you from Idaho Falls to Washington, D.C. Dulles Intl Airport in just under 19h 28m. Your travel time can differ by up to . The distance between Idaho Falls and Washington, D.C. Dulles Intl Airport is about 1811 mi.

  • What is the cheapest airline to fly from Idaho Falls to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Idaho Falls to Washington, D.C. Dulles Intl Airport is United Airlines. Our recent data shows that you can find tickets from as low as $446 on this airline. You may be able to fly from Idaho Falls to Washington, D.C. Dulles Intl Airport for 37% less than the average price by searching for this airline.

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

    Yes. In addition to deals on Idaho Falls to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho 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 Idaho Falls to Dulles Intl.

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

    Yes. Cheapflights offers flight deals from Idaho 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
Owings Mills
Springfield
Silver Spring
Hanover
Herndon
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Idaho Falls to Dulles Intl

Discover the top airline that operate flights from Idaho Falls to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$446Average$585FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.