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Idaho Falls

$184+ Cheap flights from District of Columbia 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — IDA
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap flight deals from District of Columbia to Idaho Falls

Cheapest flights from District of Columbia to Idaho Falls
Explore the most affordable flight options available from District of Columbia to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/13. 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.
Sun 12/214:17 pmDCA - IDA
1 stop8h 42mUnited Airlines
Thu 1/16:40 amIDA - DCA
1 stop6h 19mUnited Airlines
Deal found 12/13$561
This United Airlines deal was found by Cheapflights users on 12/12. 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 12/236:20 amIAD - IDA
1 stop9h 10mUnited Airlines
Sun 12/285:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/12$656
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/205:20 pmIAD - IDA
1 stop7h 39mUnited Airlines
Tue 12/305:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/13$671
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/196:20 amIAD - IDA
1 stop9h 10mUnited Airlines
Tue 12/305:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/11$678
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/2910:10 pmIAD - IDA
1 stop19h 12mUnited Airlines
Mon 1/55:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/13$687
This Delta deal was found by Cheapflights users on 12/13. 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.
Mon 12/155:11 pmDCA - IDA
1 stop7h 10mDelta
Sat 12/205:55 amIDA - DCA
1 stop8h 06mDelta
Deal found 12/13$706
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/194:00 pmIAD - IDA
1 stop8h 59mUnited Airlines
Sun 12/215:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/13$706
This Delta deal was found by Cheapflights users on 12/13. 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 12/1412:30 pmIAD - IDA
2 stops11h 51mDelta
Sat 12/201:10 pmIDA - IAD
1 stop8h 08mDelta
Deal found 12/13$711
This Delta deal was found by Cheapflights users on 12/13. 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.
Mon 12/1512:37 pmDCA - IDA
2 stops11h 44mDelta
Sun 12/215:55 amIDA - DCA
2 stops8h 45mDelta
Deal found 12/13$716
This United Airlines deal was found by Cheapflights users on 12/12. 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 12/185:20 pmIAD - IDA
1 stop7h 39mUnited Airlines
Sun 12/285:00 amIDA - IAD
1 stop6h 16mUnited Airlines
Deal found 12/12$726
This Delta deal was found by Cheapflights users on 12/13. 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.
Mon 12/155:11 pmDCA - IDA
1 stop7h 10mDelta
Fri 12/196:00 amIDA - DCA
1 stop8h 01mDelta
Deal found 12/13$731
This Delta deal was found by Cheapflights users on 12/13. 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 12/147:05 amIAD - IDA
1 stop7h 32mDelta
Fri 12/191:17 pmIDA - IAD
1 stop8h 12mDelta
Deal found 12/13$731

Find flight deals from District of Columbia to Idaho Falls

Keep the following information in mind while searching for District of Columbia to Idaho Falls flight deals. Data was last updated December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$364
(Alaska Airlines)

One-way from

$184
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$504
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 District of Columbia to Idaho Falls Fanning Field
Search Deals
One-way flight from District of Columbia to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 December 14, 2025.
Use the filters below to find and compare flights from District of Columbia to Idaho Falls that are best for you.

Fly from

District of Columbia

Fly to

Idaho Falls

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/24

8:00 am-10:59 pm

1 stop16h 59m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-9:59 pm

1 stop10h 59m

$364

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/10

8:00 am-6:18 pm

1 stop12h 18m

Idaho Falls Fanning Field

Sat 1/17

9:00 am-9:59 pm

1 stop10h 59m

$364

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

6:04 pm-6:18 pm

1 stop26h 14m

Idaho Falls Fanning Field

Tue 1/27

6:58 pm-4:26 pm

1 stop19h 28m

$374

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/10

8:20 am-10:36 pm

2 stops16h 16m

Idaho Falls Fanning Field

Sat 1/17

7:20 am-9:59 pm

2 stops12h 39m

$375

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-4:26 pm

1 stop29h 26m

$375

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 3/10

7:05 am-4:43 pm

1 stop11h 38m

Idaho Falls Fanning Field

Wed 3/18

8:00 am-5:55 pm

1 stop7h 55m

$388

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 3/9

7:05 am-4:43 pm

1 stop11h 38m

Idaho Falls Fanning Field

Wed 3/18

8:00 am-5:55 pm

1 stop7h 55m

$401

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 2/18

7:05 am-12:27 pm

1 stop7h 22m

Idaho Falls Fanning Field

Fri 2/27

1:10 pm-11:46 pm

1 stop8h 36m

$402

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 3/10

5:12 pm-10:20 pm

1 stop7h 08m

Idaho Falls Fanning Field

Mon 3/16

6:59 pm-9:10 am

2 stops12h 11m

$407

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

6:00 am-1:37 pm

1 stop9h 37m

Idaho Falls Fanning Field

Tue 1/27

7:20 am-11:12 pm

2 stops13h 52m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 20 results
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Best time to book a flight from District of Columbia to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from District of Columbia 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 District of Columbia to Idaho Falls

What is the cheapest month to book a flight from District of Columbia to Idaho Falls?

Currently, January is the cheapest month in which you can book a flight from District of Columbia to Idaho Falls (average of $289). Flying from District of Columbia to Idaho Falls in June is currently the most expensive (average of $434). 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 DC to IDA?

Find hourly flight availability from District of Columbia 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 December 14, 2025.

When flying from District of Columbia to Idaho Falls, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 21% versus a flight at noon.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia?

    If you book a flight to Idaho Falls from District of Columbia, you will be flying to Fanning Field, which is the city’s only airport. Idaho Falls Fanning Field (IDA) is located 3.8 mi from the center of Idaho Falls.

  • How long is the flight from District of Columbia to Idaho Falls?

    There are many flights that can get you from District of Columbia to Idaho Falls in 16h 16m. Fly via Alaska Airlines or American Airlines to get the fastest option. The distance from District of Columbia to Idaho Falls is about 1835 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from District of Columbia to Idaho Falls that include hotel bookings?

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

  • How can I find direct flights from District of Columbia to Idaho Falls?

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

  • Can I find deals for business class flights from District of Columbia to Idaho Falls?

    Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Idaho Falls?

    Currently, January is the cheapest month in which you can book a flight from District of Columbia to Idaho Falls (average of $289). Flying from District of Columbia to Idaho Falls in June is currently the most expensive (average of $434). 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
Rexburg

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Alternative routes for District of Columbia to Idaho Falls

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Top 3 airlines flying from District of Columbia to Idaho Falls

Discover the top 3 airlines that operate flights from District of Columbia 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 December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$334Average$697FlexibilityNo cancel feeOn-time71%
DeltaCheapest$334Average$473FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$388Average$713FlexibilityNo cancel feeOn-time69%

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