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Idaho Falls

$180+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — IDA
Jul 7 — Jul 141
Tue 7/7
Tue 7/14
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 June 7, 2026.

This Alaska Airlines deal was found by Cheapflights users on 6/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:14 pm
IAD
-
IDA
1 stop8h 28m
Alaska Airlines
Tue 11/101:53 pm
IDA
-
IAD
1 stop13h 58m
Alaska Airlines
Deal found 6/3$349
This Delta deal was found by Cheapflights users on 6/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:05 am
IAD
-
IDA
2 stops14h 14m
Delta
Tue 11/101:10 pm
IDA
-
IAD
1 stop8h 36m
Delta
Deal found 6/3$354
This United Airlines deal was found by Cheapflights users on 6/5. 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.
Mon 9/76:30 am
IAD
-
IDA
1 stop8h 59m
United Airlines
Fri 9/114:04 pm
IDA
-
IAD
1 stop6h 28m
United Airlines
Deal found 6/5$359
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 8/256:09 am
IAD
-
IDA
1 stop9h 41m
American Airlines
Tue 9/17:00 am
IDA
-
IAD
1 stop9h 27m
American Airlines
Deal found 6/3$374
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:10 am
IAD
-
IDA
1 stop7h 13m
United Airlines
Wed 9/22:25 pm
IDA
-
IAD
1 stop6h 54m
United Airlines
Deal found 6/3$387
This Travelocity deal was found by Cheapflights users on 6/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:03 am
IAD
-
IDA
1 stop11h 34m
Alaska Airlines
Tue 8/252:01 pm
IDA
-
IAD
1 stop7h 58m
Alaska Airlines
Deal found 6/3$399
This United Airlines deal was found by Cheapflights users on 6/5. 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 8/2210:10 am
IAD
-
IDA
1 stop7h 13m
United Airlines
Sat 8/297:00 am
IDA
-
IAD
1 stop8h 53m
United Airlines
Deal found 6/5$410
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:20 am
IAD
-
IDA
1 stop27h 27m
Multiple Airlines
Fri 8/285:08 pm
IDA
-
IAD
1 stop12h 42m
Multiple Airlines
Deal found 6/4$431
This American Airlines deal was found by Cheapflights users on 6/2. 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.
Tue 8/186:09 am
IAD
-
IDA
1 stop9h 41m
American Airlines
Sat 8/297:00 am
IDA
-
IAD
1 stop9h 27m
American Airlines
Deal found 6/2$435

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 June 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Alaska Airlines)

One-way from

$180
(United Airlines)
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 June 7, 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

Tue 8/11

7:00 am-2:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Mon 8/17

7:00 pm-9:20 am

2 stops12h 20m

$499

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 8/18

12:29 pm-10:32 pm

2 stops12h 03m

Idaho Falls Fanning Field

Tue 8/25

7:00 pm-9:20 am

2 stops12h 20m

$504

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 8/11

6:14 pm-3:37 pm

1 stop23h 23m

Idaho Falls Fanning Field

Mon 8/17

1:43 pm-11:59 pm

1 stop8h 16m

$525

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 7/31

6:03 am-3:37 pm

1 stop11h 34m

Idaho Falls Fanning Field

Tue 8/4

1:43 pm-11:59 pm

1 stop8h 16m

$570

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 8/18

6:14 pm-1:24 pm

2 stops21h 10m

Idaho Falls Fanning Field

Sat 8/29

3:57 pm-5:40 am

2 stops11h 43m

$629
Quickest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sun 6/28

6:03 am-3:37 pm

1 stop11h 34m

Idaho Falls Fanning Field

Sat 7/4

7:15 am-5:11 pm

1 stop7h 56m

$635

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 7/22

6:14 pm-1:06 pm

2 stops20h 52m

Idaho Falls Fanning Field

Tue 7/28

1:43 pm-11:59 pm

1 stop8h 16m

$681

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sun 7/19

7:53 pm-3:37 pm

2 stops21h 44m

Idaho Falls Fanning Field

Thu 7/30

1:43 pm-11:59 pm

1 stop8h 16m

$696

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 7/10

7:49 pm-3:37 pm

2 stops21h 48m

Idaho Falls Fanning Field

Mon 7/13

7:15 am-6:39 am

1 stop21h 24m

$706
Cheapest one-way

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 6/27

6:14 pm-3:37 pm

1 stop23h 23m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 17 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 June.
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 June 7, 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
12,476 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,476 reviews
Alaska Airlines
7.9
Good
12,476 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
United Airlines
7.4
Good
9,777 reviews
Alaska Airlines
7.9
Good
12,476 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

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 $349, Alaska Airlines can have you in Idaho Falls from Washington, D.C. Dulles Intl Airport in 8h 28m. 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 $275 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

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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 June 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$275Average$581FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$433Average$708FlexibilityNo cancel feeOn-time75%

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