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Idaho Falls

$197+ Cheap flights from Dulles Intl (IAD) to Idaho Falls (IDA)

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — IDA
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheap flight deals from Dulles Intl to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Idaho Falls (IDA). 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 July 28, 2025.

Round-trip from

$394
(Hawaiian Airlines)

One-way from

$197
(Alaska Airlines)

Popular in

March

Cheapest in

January

Average price

$566
From Washington, D.C. Dulles Intl to Idaho Falls Fanning Field
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One-way flight from Washington, D.C. Dulles Intl to Idaho Falls Fanning Field
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Dulles Intl to Idaho Falls

Cheapest flights from Dulles Intl to Idaho Falls
Explore the most affordable flight options available from Dulles Intl to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 10/167:48 pmIAD - IDA
1 stop21h 50mAlaska Airlines
Mon 10/204:15 pmIDA - IAD
1 stop13h 18mAlaska Airlines
Deal found 7/28$394
This American Airlines deal was found by Cheapflights users on 7/27. 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 10/36:25 amIAD - IDA
1 stop8h 34mAmerican Airlines
Wed 10/86:44 amIDA - IAD
1 stop8h 03mAmerican Airlines
Deal found 7/27$395
This Delta deal was found by Cheapflights users on 7/28. 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 8/277:35 amIAD - IDA
2 stops12h 36mDelta
Wed 9/33:00 pmIDA - IAD
1 stop6h 32mDelta
Deal found 7/28$444
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 11/209:57 amIAD - IDA
1 stop7h 19mUnited Airlines
Thu 11/277:00 amIDA - IAD
1 stop6h 41mUnited Airlines
Deal found 7/28$485
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:00 amIAD - IDA
1 stop10h 20mHawaiian Airlines
Sun 9/146:13 amIDA - IAD
1 stop8h 56mHawaiian Airlines
Deal found 7/28$654

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Idaho Falls 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 July 28, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Idaho Falls that are best for you.

Fly from

Dulles Intl

Fly to

Idaho Falls

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 10/16

7:48 pm-3:38 pm

1 stop21h 50m

Idaho Falls Fanning Field

Mon 10/20

4:15 pm-7:33 am

1 stop13h 18m

$394

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 10/3

6:25 am-12:59 pm

1 stop8h 34m

Idaho Falls Fanning Field

Wed 10/8

6:44 am-4:47 pm

1 stop8h 03m

$395

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 8/27

7:35 am-6:11 pm

2 stops12h 36m

Idaho Falls Fanning Field

Wed 9/3

3:00 pm-11:32 pm

1 stop6h 32m

$444

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 8/15

6:30 am-1:32 pm

1 stop9h 02m

Idaho Falls Fanning Field

Fri 8/22

5:56 pm-5:22 am

1 stop9h 26m

$569

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 9/9

7:00 am-3:20 pm

1 stop10h 20m

Idaho Falls Fanning Field

Sun 9/14

6:13 am-5:09 pm

1 stop8h 56m

$654

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 9/9

9:00 am-3:20 pm

1 stop8h 20m

$197

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 8/19

7:30 am-2:19 pm

1 stop8h 49m

$198

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/18

6:30 am-1:32 pm

1 stop9h 02m

$243

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 9/10

9:00 am-3:20 pm

1 stop8h 20m

$260

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 9/13

6:25 am-12:59 pm

1 stop8h 34m

$270

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Best time to book a flight from Dulles Intl to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Idaho Falls

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls (average of $380). Flying from Washington, D.C. Dulles Intl Airport to Idaho Falls in December is currently the most expensive (average of $578). 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.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Idaho Falls. Reviews last updated July 28, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from Washington, D.C. Dulles Intl Airport to Idaho Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,971 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,604 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,893 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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

    For a flight from Washington, D.C. Dulles Intl to Idaho Falls, you will be flying into 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 inbound flights from Washington, D.C. Dulles Intl per day. 1 airline has flights to Idaho Falls Fanning Field from Washington, D.C. Dulles Intl on a regular basis.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Idaho Falls round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Idaho Falls is Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $394 on this airline. Additional options worth looking into are American Airlines and Delta, starting at $395 and $463 round-trip. Hawaiian Airlines is currently priced 38% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $197. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Idaho Falls for a low price.

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

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Idaho Falls.

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Idaho Falls 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 Washington, D.C. Dulles Intl Airport to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls (average of $380). Flying from Washington, D.C. Dulles Intl Airport to Idaho Falls in December is currently the most expensive (average of $578). 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?

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Rexburg

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Alternative routes for Dulles Intl to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Dulles Intl to Idaho Falls

Discover the top airline that operate flights from Dulles Intl to Idaho Falls. 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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$408Average$705FlexibilityNo cancel feeOn-time69%

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