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Idaho Falls

$297+ Cheap flights from Washington, D.C. (WAS) 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — IDA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$367
(Delta)

One-way from

$297
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$487
Provider with most accurate pricing for Washington, D.C. (WAS)-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Idaho Falls Fanning Field flights.
Search Deals
From Washington, D.C. (WAS) to Idaho Falls Fanning Field
Search Deals
One-way flight from Washington, D.C. (WAS) to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Washington, D.C. to Idaho Falls

Cheapest flights from Washington, D.C. to Idaho Falls
Explore the most affordable flight options available from Washington, D.C. to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Delta deal was found by Cheapflights users on 2/20. 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.
Tue 4/227:05 amBWI - IDA
1 stop7h 21mDelta
Tue 4/296:55 pmIDA - BWI
1 stop8h 55mDelta
Deal found 2/20$367
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:00 amBWI - IDA
2 stops9h 29mAmerican Airlines
Tue 4/297:43 amIDA - BWI
2 stops12h 36mAmerican Airlines
Deal found 2/20$377
This Delta deal was found by Cheapflights users on 2/20. 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.
Tue 4/225:10 pmDCA - IDA
1 stop7h 46mDelta
Tue 4/296:55 pmIDA - DCA
2 stops12h 11mDelta
Deal found 2/20$400
This Delta deal was found by Cheapflights users on 2/19. 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.
Sun 8/3112:35 pmIAD - IDA
2 stops11h 40mDelta
Thu 9/47:00 pmIDA - IAD
2 stops11h 42mDelta
Deal found 2/19$405
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:30 amDCA - IDA
1 stop7h 59mAmerican Airlines
Tue 4/2912:59 pmIDA - DCA
1 stop8h 01mAmerican Airlines
Deal found 2/20$408
This American Airlines deal was found by Cheapflights users on 2/19. 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 8/137:07 amIAD - IDA
1 stop7h 04mAmerican Airlines
Tue 8/197:36 amIDA - IAD
1 stop6h 50mAmerican Airlines
Deal found 2/19$420
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 4/87:00 amIAD - IDA
1 stop10h 34mAlaska Airlines
Mon 4/148:00 amIDA - IAD
1 stop19h 34mAlaska Airlines
Deal found 2/19$438
This United Airlines deal was found by Cheapflights users on 2/19. 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 3/710:05 amIAD - IDA
1 stop8h 58mUnited Airlines
Wed 3/1210:38 amIDA - IAD
1 stop6h 17mUnited Airlines
Deal found 2/19$540
This United Airlines deal was found by Cheapflights users on 2/20. 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 7/810:23 amBWI - IDA
1 stop8h 54mUnited Airlines
Tue 7/152:35 pmIDA - BWI
1 stop6h 25mUnited Airlines
Deal found 2/20$597
This Hawaiian Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 3/167:00 amIAD - IDA
1 stop10h 30mHawaiian Airlines
Fri 3/218:00 amIDA - IAD
1 stop7h 59mHawaiian Airlines
Deal found 2/19$622
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:55 pmBWI - IDA
1 stop29h 43mAlaska Airlines
Sun 9/78:00 amIDA - BWI
1 stop19h 45mAlaska Airlines
Deal found 2/20$645
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:30 pmDCA - IDA
1 stop31h 08mAlaska Airlines
Sun 9/74:00 pmIDA - DCA
2 stops26h 55mAlaska Airlines
Deal found 2/20$669

Find flights from Washington, D.C. to Idaho Falls within your budget

Customize your flight search to find flights from Washington, D.C. 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 February 20, 2025.

Fly from

Washington, D.C.

Fly to

Idaho Falls

Route

Depart

Return

Price

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Tue 4/22

7:05 am-12:26 pm

1 stop7h 21m

Idaho Falls Fanning Field

Tue 4/29

6:55 pm-5:50 am

1 stop8h 55m

$367

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Tue 4/22

5:00 am-12:29 pm

2 stops9h 29m

Idaho Falls Fanning Field

Tue 4/29

7:43 am-10:19 pm

2 stops12h 36m

$377

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 4/22

5:10 pm-10:56 pm

1 stop7h 46m

Idaho Falls Fanning Field

Tue 4/29

6:55 pm-9:06 am

2 stops12h 11m

$400

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 4/22

6:30 am-12:29 pm

1 stop7h 59m

Idaho Falls Fanning Field

Tue 4/29

12:59 pm-11:00 pm

1 stop8h 01m

$408

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 8/13

7:07 am-12:11 pm

1 stop7h 04m

Idaho Falls Fanning Field

Tue 8/19

7:36 am-4:26 pm

1 stop6h 50m

$420

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 4/8

7:00 am-3:34 pm

1 stop10h 34m

Idaho Falls Fanning Field

Mon 4/14

8:00 am-5:34 am

1 stop19h 34m

$438

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 4/9

7:35 am-12:16 pm

1 stop6h 41m

Idaho Falls Fanning Field

Sat 4/12

3:30 pm-11:50 pm

1 stop6h 20m

$482

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 3/7

10:05 am-5:03 pm

1 stop8h 58m

Idaho Falls Fanning Field

Wed 3/12

10:38 am-6:55 pm

1 stop6h 17m

$540

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Tue 7/8

10:23 am-5:17 pm

1 stop8h 54m

Idaho Falls Fanning Field

Tue 7/15

2:35 pm-11:00 pm

1 stop6h 25m

$597

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sun 3/16

7:00 am-3:30 pm

1 stop10h 30m

Idaho Falls Fanning Field

Fri 3/21

8:00 am-5:59 pm

1 stop7h 59m

$622

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 22 results
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Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Idaho Falls in February.
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.-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.-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-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.-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 Washington, D.C. to Idaho Falls

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

Travel insights for flights from Washington, D.C. to Idaho Falls

Get recent, data-driven insights about flights from Washington, D.C. to Idaho Falls including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Idaho Falls (average of $380). Flying from Washington, D.C. to Idaho Falls in July is currently the most expensive (average of $628). 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.

What is the cheapest time of day to fly from WAS to IDA?

Find hourly flight availability from Washington, D.C. to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Idaho Falls in the morning. If you’re flexible enough to do this you can expect to save up to 6% on your trip compared to booking a flight at noon.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho Falls, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 20, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Washington, D.C. to Idaho Falls to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,692 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,692 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,220 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines
7.9
Good
2,317 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,766 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to Idaho Falls from Washington, D.C.. Booking flights from Washington, D.C. to Fanning Field (IDA) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 2 different airlines.

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

    Delta, at $367, was found to be the cheapest airline from Washington, D.C. to Idaho Falls.Alternate airlines to your destination round-trip include Alaska Airlines and American Airlines. Delta is currently priced 49% below the average price you’ll pay for this route.

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

    The cheapest airlines for a one-way flight from Washington, D.C. to Idaho Falls are Alaska Airlines ($297), United Airlines ($318), and Hawaiian Airlines ($331).

  • What are the most popular routes from Washington, D.C. to Idaho Falls?

    When deciding which route to take from Washington, D.C. to Idaho Falls consider Washington, D.C. Dulles Intl - Idaho Falls Fanning Field, Washington, D.C. Reagan-National - Idaho Falls Fanning Field or Baltimore/Washington - Idaho Falls Fanning Field as they are the most popular.

  • Can I find deals for flights from Washington, D.C. to Idaho Falls that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to Idaho Falls?

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

  • Can I find deals for business class flights from Washington, D.C. to Idaho Falls?

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

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Idaho Falls (average of $380). Flying from Washington, D.C. to Idaho Falls in July is currently the most expensive (average of $628). 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

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Top 2 airlines flying from Washington, D.C. to Idaho Falls

Discover the top 2 airlines that operate flights from Washington, D.C. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$334Average$762FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$456Average$803FlexibilityNo cancel feeOn-time69%
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