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Dulles Intl

$213+ 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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — IAD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap 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 September 16, 2025.

Round-trip from

$412
(Alaska Airlines)

One-way from

$213
(Delta)

Popular in

September

Cheapest in

April

Average price

$1,597
From Idaho Falls Fanning Field to Washington, D.C. Dulles Intl
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One-way flight from Idaho Falls Fanning Field to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 27% potential increase in price ($283 potential increase over avg. RT price).
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Cheapest flight prices on average. 14% potential price decrease ($93 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 11/83:50 pmIDA - IAD
1 stop12h 33mAlaska Airlines
Wed 11/196:13 pmIAD - IDA
1 stop23h 00mAlaska Airlines
Deal found 9/16$412
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:19 pmIDA - IAD
1 stop8h 10mDelta
Sat 11/157:10 amIAD - IDA
1 stop7h 29mDelta
Deal found 9/14$413
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/273:50 pmIDA - IAD
1 stop12h 33mAlaska Airlines
Fri 10/317:43 amIAD - IDA
1 stop9h 30mAlaska Airlines
Deal found 9/15$414
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/2712:55 pmIDA - IAD
1 stop7h 56mAmerican Airlines
Thu 10/306:11 amIAD - IDA
1 stop8h 30mAmerican Airlines
Deal found 9/15$415
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:53 pmIDA - IAD
2 stops12h 17mDelta
Wed 11/127:10 amIAD - IDA
1 stop7h 29mDelta
Deal found 9/14$418
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 10/2512:55 pmIDA - IAD
2 stops8h 58mAmerican Airlines
Fri 10/316:11 amIAD - IDA
1 stop8h 30mAmerican Airlines
Deal found 9/14$419
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 12/81:58 pmIDA - IAD
1 stop7h 01mAmerican Airlines
Thu 12/119:15 amIAD - IDA
2 stops15h 21mAmerican Airlines
Deal found 9/15$420
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:53 pmIDA - IAD
2 stops12h 17mDelta
Tue 11/1112:36 pmIAD - IDA
2 stops11h 43mDelta
Deal found 9/14$423
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:19 pmIDA - IAD
1 stop8h 10mDelta
Wed 11/197:10 amIAD - IDA
1 stop17h 09mDelta
Deal found 9/14$435
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:19 pmIDA - IAD
1 stop8h 10mDelta
Wed 11/197:10 amIAD - IDA
1 stop17h 09mDelta
Deal found 9/14$436
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:15 pmIDA - IAD
2 stops18h 56mDelta
Wed 11/127:10 amIAD - IDA
1 stop7h 29mDelta
Deal found 9/14$440
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:15 pmIDA - IAD
2 stops18h 56mDelta
Sun 11/97:10 amIAD - IDA
1 stop7h 29mDelta
Deal found 9/14$441

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 September 16, 2025.
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 11/8

3:50 pm-6:23 am

1 stop12h 33m

Washington, D.C. Dulles Intl

Wed 11/19

6:13 pm-3:13 pm

1 stop23h 00m

$412

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 11/8

6:05 am-4:40 pm

1 stop8h 35m

Washington, D.C. Dulles Intl

Wed 11/12

7:43 am-3:13 pm

1 stop9h 30m

$412

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 11/11

1:19 pm-11:29 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

Wed 11/12

7:10 am-12:39 pm

1 stop7h 29m

$413

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 11/11

1:19 pm-11:29 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

Sat 11/15

7:10 am-12:39 pm

1 stop7h 29m

$413

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 10/25

6:00 am-6:28 pm

1 stop10h 28m

Washington, D.C. Dulles Intl

Fri 10/31

7:43 am-3:13 pm

1 stop9h 30m

$413

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 3/6

8:00 am-5:55 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

Tue 3/10

7:00 am-3:23 pm

1 stop10h 23m

$414

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 11/7

1:15 pm-11:33 pm

1 stop8h 18m

Washington, D.C. Dulles Intl

Tue 11/11

7:10 am-12:39 pm

1 stop7h 29m

$414

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 10/25

1:15 pm-11:33 pm

1 stop8h 18m

Washington, D.C. Dulles Intl

Thu 10/30

6:15 am-12:33 pm

1 stop8h 18m

$414

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 10/27

3:50 pm-6:23 am

1 stop12h 33m

Washington, D.C. Dulles Intl

Fri 10/31

7:43 am-3:13 pm

1 stop9h 30m

$414

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 10/27

2:45 pm-11:15 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Sat 11/1

12:40 pm-5:46 pm

1 stop7h 06m

$451

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 20 results
1
2

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 September 16, 2025.
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
8,924 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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, Delta, and Hawaiian Airlines can get you from Idaho Falls to Washington, D.C. Dulles Intl Airport in just under 7h 55m. Your travel time can differ by up to 4h 38m. 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 $464 on this airline. You may be able to fly from Idaho Falls to Washington, D.C. Dulles Intl Airport for 38% less than the average price by searching for this airline.

  • What are the cheapest airlines to fly from Idaho Falls to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $241. Users have also found prices from $268 and $285 on Alaska Airlines and United Airlines, respectively.

  • 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.

  • What is the cheapest month to book a flight from Idaho Falls to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Idaho Falls to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$464Average$686FlexibilityNo cancel feeOn-time69%

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