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Idaho Falls

$104+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — IDA
Aug 21 — Aug 281
Fri 8/21
Fri 8/28
1 adult, Economy
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Cheap 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 22, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:50 am
IAD
-
IDA
1 stop8h 15m
Multiple Airlines
Fri 8/215:33 pm
IDA
-
IAD
1 stop12h 31m
Multiple Airlines
Deal found 7/16$315
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/2810:10 am
IAD
-
IDA
1 stop7h 13m
United Airlines
Mon 8/314:04 pm
IDA
-
IAD
1 stop6h 28m
United Airlines
Deal found 7/17$349
This Delta deal was found by Cheapflights users on 7/21. 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 8/2812:29 pm
IAD
-
IDA
2 stops12h 03m
Delta
Mon 8/316:00 am
IDA
-
IAD
2 stops12h 05m
Delta
Deal found 7/21$370
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:15 am
IAD
-
IDA
1 stop7h 12m
Delta
Tue 1/51:10 pm
IDA
-
IAD
1 stop8h 36m
Delta
Deal found 7/20$374
This Delta deal was found by Cheapflights users on 7/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:00 am
IAD
-
IDA
1 stop7h 15m
Delta
Mon 9/286:57 pm
IDA
-
IAD
2 stops14h 48m
Delta
Deal found 7/16$379
This Delta deal was found by Cheapflights users on 7/21. 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 8/187:00 am
IAD
-
IDA
1 stop9h 35m
Delta
Tue 8/257:00 pm
IDA
-
IAD
2 stops12h 20m
Delta
Deal found 7/21$389
This United Airlines deal was found by Cheapflights users on 7/20. 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 9/2212:50 pm
IAD
-
IDA
1 stop6h 26m
United Airlines
Thu 9/242:28 pm
IDA
-
IAD
1 stop6h 57m
United Airlines
Deal found 7/20$392
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/1810:10 am
IAD
-
IDA
1 stop7h 13m
United Airlines
Fri 8/212:25 pm
IDA
-
IAD
1 stop6h 54m
United Airlines
Deal found 7/21$396
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/242:43 pm
IAD
-
IDA
1 stop8h 35m
United Airlines
Wed 8/262:25 pm
IDA
-
IAD
1 stop6h 54m
United Airlines
Deal found 7/21$398
This Expedia deal was found by Cheapflights users on 7/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 am
IAD
-
IDA
1 stop10h 20m
Alaska Airlines
Mon 8/316:18 am
IDA
-
IAD
1 stop8h 26m
Alaska Airlines
Deal found 7/16$399
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:39 pm
IAD
-
IDA
2 stops39h 43m
Multiple Airlines
Mon 8/318:33 pm
IDA
-
IAD
1 stop9h 31m
Multiple Airlines
Deal found 7/16$408

Find 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 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$315
(Kiwi.com)

One-way from

$104
(Kiwi.com)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Idaho Falls Fanning Field flights.
Search Deals
From Washington, D.C. Dulles Intl to Idaho Falls Fanning Field
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Idaho Falls Fanning Field
Search Deals

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 22, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 9/23

7:00 am-12:15 pm

1 stop7h 15m

Idaho Falls Fanning Field

Tue 9/29

6:57 pm-9:10 am

2 stops12h 13m

$379

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 10/2

6:35 am-1:24 pm

1 stop8h 49m

Idaho Falls Fanning Field

Mon 10/5

2:28 pm-11:25 pm

1 stop6h 57m

$389
Quickest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/24

2:43 pm-9:18 pm

1 stop8h 35m

Idaho Falls Fanning Field

Wed 8/26

2:25 pm-11:19 pm

1 stop6h 54m

$398

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 8/11

7:00 am-2:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Tue 8/18

7:00 pm-9:20 am

2 stops12h 20m

$414

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 9/23

7:25 am-6:17 pm

2 stops12h 52m

Idaho Falls Fanning Field

Mon 9/28

6:57 pm-11:45 am

2 stops14h 48m

$440

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 8/8

6:10 am-11:45 am

1 stop7h 35m

Idaho Falls Fanning Field

Fri 8/14

2:25 pm-12:32 am

1 stop8h 07m

$487
Cheapest one-way

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 8/29

8:15 am-1:29 pm

1 stop7h 14m

$175

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 9/5

12:30 pm-10:32 pm

2 stops12h 02m

$180

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/24

7:00 am-2:35 pm

1 stop9h 35m

$180

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 9/5

6:09 am-11:30 am

1 stop7h 21m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Dulles Intl to Idaho Falls

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 Dulles Intl to Idaho Falls in July.
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 Washington, D.C. Dulles Intl Airport-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Idaho Falls 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 Washington, D.C. Dulles Intl Airport-Idaho Falls 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 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.

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 22, 2026.
Read reviews from past customers who have flown Alaska Airlines and United 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
7.9
Good
12,689 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
Alaska Airlines
7.9
Good
12,689 reviews
Alaska Airlines
7.9
Good
12,689 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
United Airlines
7.4
Good
10,020 reviews
Alaska Airlines
7.9
Good
12,689 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.

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

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

    For as low as $379, Delta can have you in Idaho Falls from Washington, D.C. Dulles Intl Airport in 7h 15m. The distance from Washington, D.C. Dulles Intl Airport to Idaho Falls is about 1811 mi. This flight may include one or multiple stops.

  • 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 United Airlines. Our recent data shows that you can find tickets from as low as $333 on this airline. An additional option worth looking into is Alaska Airlines, starting at $433.

  • 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.

See more FAQs

Traveling to a place near Idaho Falls?

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Top 2 airlines flying from Dulles Intl to Idaho Falls

Discover the top 2 airlines 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 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$333Average$580FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$433Average$708FlexibilityNo cancel feeOn-time75%

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