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Dulles Intl

$119+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — IAD
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
1 adult, Economy
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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 February 6, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 10/276:15 am
IDA
-
IAD
1 stop9h 01m
Alaska Airlines
Thu 10/299:00 am
IAD
-
IDA
1 stop8h 29m
Alaska Airlines
Deal found 2/4$309
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Sat 4/182:30 pm
IDA
-
IAD
1 stop7h 04m
United Airlines
Sat 4/259:55 am
IAD
-
IDA
1 stop8h 19m
United Airlines
Deal found 2/5$327
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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.
Sat 4/256:00 am
IDA
-
IAD
1 stop10h 20m
Alaska Airlines
Sat 5/29:00 am
IAD
-
IDA
1 stop8h 29m
Alaska Airlines
Deal found 2/5$367
This Orbitz deal was found by Cheapflights users on 2/5. 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.
Mon 9/214:03 pm
IDA
-
IAD
1 stop13h 25m
Alaska Airlines
Fri 9/257:18 pm
IAD
-
IDA
1 stop22h 11m
Alaska Airlines
Deal found 2/5$389
This Expedia deal was found by Cheapflights users on 2/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/128:00 am
IDA
-
IAD
1 stop19h 40m
Alaska Airlines
Sun 3/157:05 am
IAD
-
IDA
1 stop18h 31m
Alaska Airlines
Deal found 2/4$403
This United Airlines deal was found by Cheapflights users on 2/4. 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.
Fri 5/222:31 pm
IDA
-
IAD
1 stop8h 06m
United Airlines
Tue 5/266:30 am
IAD
-
IDA
1 stop8h 54m
United Airlines
Deal found 2/4$421
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:20 pm
IDA
-
IAD
1 stop22h 00m
Alaska Airlines
Sun 3/17:05 am
IAD
-
IDA
1 stop18h 31m
Alaska Airlines
Deal found 2/3$423
This United Airlines deal was found by Cheapflights users on 2/4. 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.
Sat 5/232:31 pm
IDA
-
IAD
1 stop8h 06m
United Airlines
Tue 5/266:30 am
IAD
-
IDA
1 stop8h 54m
United Airlines
Deal found 2/4$424
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Sat 4/252:30 pm
IDA
-
IAD
1 stop7h 04m
United Airlines
Sun 5/310:35 pm
IAD
-
IDA
1 stop13h 20m
United Airlines
Deal found 2/5$431
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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.
Wed 4/86:00 am
IDA
-
IAD
1 stop21h 40m
Alaska Airlines
Tue 4/147:11 pm
IAD
-
IDA
1 stop29h 41m
Alaska Airlines
Deal found 2/5$443
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Sat 4/182:30 pm
IDA
-
IAD
1 stop7h 04m
United Airlines
Sun 4/2610:35 pm
IAD
-
IDA
1 stop13h 18m
United Airlines
Deal found 2/5$446
This American Airlines deal was found by Cheapflights users on 2/3. 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 8/211:00 pm
IDA
-
IAD
1 stop7h 44m
American Airlines
Mon 8/246:27 am
IAD
-
IDA
1 stop7h 49m
American Airlines
Deal found 2/3$449

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 February 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$327
(United Airlines)

One-way from

$119
(United Airlines)

Popular in

September

Cheapest in

October

Average price

$547
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 ($126 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 February 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 February 6, 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

Sat 4/18

2:30 pm-11:34 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Sat 4/25

9:55 am-4:14 pm

1 stop8h 19m

$327

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 3/12

8:00 am-5:40 am

1 stop19h 40m

Washington, D.C. Dulles Intl

Sun 3/15

7:05 am-11:36 pm

1 stop18h 31m

$403

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 5/22

2:31 pm-12:37 am

1 stop8h 06m

Washington, D.C. Dulles Intl

Tue 5/26

6:30 am-1:24 pm

1 stop8h 54m

$421

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 2/25

5:20 pm-5:20 pm

1 stop22h 00m

Washington, D.C. Dulles Intl

Sun 3/1

7:05 am-11:36 pm

1 stop18h 31m

$423

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 4/8

6:00 am-5:40 am

1 stop21h 40m

Washington, D.C. Dulles Intl

Tue 4/14

7:11 pm-10:52 pm

1 stop29h 41m

$443

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 4/27

4:06 pm-5:50 am

1 stop11h 44m

Washington, D.C. Dulles Intl

Fri 5/1

6:47 pm-3:29 pm

2 stops22h 42m

$451

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 5/23

4:23 pm-12:37 am

1 stop6h 14m

Washington, D.C. Dulles Intl

Mon 5/25

6:30 am-1:24 pm

1 stop8h 54m

$455

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 4/8

6:00 am-5:40 am

1 stop21h 40m

Washington, D.C. Dulles Intl

Thu 4/16

7:00 am-4:19 pm

1 stop11h 19m

$458

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 4/27

4:06 pm-5:50 am

1 stop11h 44m

Washington, D.C. Dulles Intl

Mon 5/4

7:20 pm-3:29 pm

1 stop22h 09m

$463

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 3/7

2:35 pm-11:20 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Wed 3/11

8:20 am-1:30 pm

1 stop7h 10m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 20 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 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 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 February 6, 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
9,242 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

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
9,242 reviews
United Airlines
7.4
Good
9,242 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

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?

    United Airlines and Alaska Airlines can get you from Idaho Falls to Washington, D.C. Dulles Intl Airport in just under 7h 04m. Your travel time can differ by up to 12h 36m. The distance between Idaho Falls and Washington, D.C. Dulles Intl Airport is about 1811 mi. This flight may include one or multiple stops.

  • 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
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

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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 February 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$446Average$633FlexibilityNo cancel feeOn-time69%

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