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Dulles Intl

$231+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$390
(Alaska Airlines)

One-way from

$231
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$1,023
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. 22% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 9/246:13 amIDA - IAD
1 stop8h 56mAlaska Airlines
Sat 9/277:00 amIAD - IDA
1 stop10h 23mAlaska Airlines
Deal found 6/10$390
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 9/246:44 amIDA - IAD
1 stop8h 06mAmerican Airlines
Sat 9/2712:48 pmIAD - IDA
2 stops10h 37mAmerican Airlines
Deal found 6/10$396
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 9/246:50 pmIDA - IAD
2 stops12h 21mDelta
Sat 9/273:00 pmIAD - IDA
2 stops9h 20mDelta
Deal found 6/10$401
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 7/144:13 pmIDA - IAD
1 stop6h 32mUnited Airlines
Mon 7/216:30 amIAD - IDA
1 stop9h 02mUnited Airlines
Deal found 6/11$474
This United deal was found by Cheapflights users on 6/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/84:13 pmIDA - IAD
1 stop6h 32mMultiple Airlines
Wed 7/96:30 amIAD - IDA
1 stop10h 52mMultiple Airlines
Deal found 6/10$642

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 June 12, 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

Wed 9/24

6:13 am-5:09 pm

1 stop8h 56m

Washington, D.C. Dulles Intl

Sat 9/27

7:00 am-3:23 pm

1 stop10h 23m

$390

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 9/24

6:44 am-4:50 pm

1 stop8h 06m

Washington, D.C. Dulles Intl

Sat 9/27

12:48 pm-9:25 pm

2 stops10h 37m

$396

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 9/24

6:50 pm-9:11 am

2 stops12h 21m

Washington, D.C. Dulles Intl

Sat 9/27

3:00 pm-10:20 pm

2 stops9h 20m

$401

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 7/14

4:13 pm-12:45 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Mon 7/21

6:30 am-1:32 pm

1 stop9h 02m

$474

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 7/8

4:13 pm-12:45 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Wed 7/9

6:30 am-3:22 pm

1 stop10h 52m

$642

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 6/25

2:25 pm-12:34 am

1 stop8h 09m

$231

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 6/25

6:52 pm-9:00 am

2 stops12h 08m

$236

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sun 8/24

4:03 pm-7:32 am

1 stop13h 29m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to Washington, D.C. Dulles Intl Airport

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 $309). Flying from Idaho Falls to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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).

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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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. 2 airlines have flights to Washington, D.C. Dulles Intl from Idaho Falls Fanning Field on a regular basis.

  • What are the cheapest airlines flying 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 Alaska Airlines. Our recent data shows that you can find tickets from as low as $390 on this airline. Additional options worth looking into are American Airlines and Delta, starting at $396 and $401 round-trip. You may be able to fly from Idaho Falls to Washington, D.C. Dulles Intl Airport for 39% less than the average price by searching for these airlines.

  • 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 United Airlines. According to our data, you can fly for as low as $231. Users have also found prices from $236 and $264 on Delta and Alaska 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 $309). Flying from Idaho Falls to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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 Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Sterling
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas

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Top 2 airlines flying from Idaho Falls to Dulles Intl

Discover the top 2 airlines 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$426FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$473Average$694FlexibilityNo cancel feeOn-time69%

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