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Idaho Falls

$161+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — IDA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find 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 October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 12/86:30 amDCA - IDA
1 stop8h 57mAmerican Airlines
Fri 12/121:58 pmIDA - DCA
1 stop7h 02mAmerican Airlines
Deal found 10/27$415
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:05 amIAD - IDA
1 stop7h 32mDelta
Fri 12/121:17 pmIDA - IAD
1 stop8h 12mDelta
Deal found 10/27$415
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/812:32 pmDCA - IDA
2 stops11h 49mDelta
Fri 12/126:00 amIDA - DCA
1 stop8h 01mDelta
Deal found 10/27$420
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 12/811:25 amIAD - IDA
2 stops13h 11mAmerican Airlines
Fri 12/121:58 pmIDA - IAD
1 stop7h 01mAmerican Airlines
Deal found 10/27$420
This American Airlines deal was found by Cheapflights users on 10/30. 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 11/147:43 amDCA - IDA
1 stop7h 45mAmerican Airlines
Tue 11/181:58 pmIDA - DCA
1 stop7h 02mAmerican Airlines
Deal found 10/30$526
This American Airlines deal was found by Cheapflights users on 10/30. 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 11/146:04 amIAD - IDA
1 stop9h 24mAmerican Airlines
Tue 11/181:58 pmIDA - IAD
1 stop6h 35mAmerican Airlines
Deal found 10/30$526
This Delta deal was found by Cheapflights users on 10/30. 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 11/145:10 pmDCA - IDA
1 stop7h 09mDelta
Tue 11/186:57 pmIDA - DCA
2 stops12h 13mDelta
Deal found 10/30$531
This Delta deal was found by Cheapflights users on 10/30. 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 11/1410:05 amIAD - IDA
2 stops14h 14mDelta
Tue 11/181:15 pmIDA - IAD
1 stop8h 43mDelta
Deal found 10/30$531
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Tue 11/117:43 amIAD - IDA
1 stop9h 30mAlaska Airlines
Tue 11/186:05 amIDA - IAD
1 stop8h 35mAlaska Airlines
Deal found 10/28$532
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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.
Tue 11/115:00 pmDCA - IDA
1 stop8h 59mAlaska Airlines
Tue 11/186:05 amIDA - DCA
1 stop13h 54mAlaska Airlines
Deal found 10/28$551
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/68:25 amIAD - IDA
1 stop8h 51mUnited Airlines
Sun 11/1610:50 amIDA - IAD
1 stop8h 31mUnited Airlines
Deal found 10/28$581
This Delta deal was found by Cheapflights users on 10/30. 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.
Thu 11/66:15 amIAD - IDA
1 stop8h 18mDelta
Sun 11/166:57 pmIDA - IAD
2 stops12h 13mDelta
Deal found 10/30$586

Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$392
(Alaska Airlines)

One-way from

$161
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$447
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. 7% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 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

Fri 1/16

5:01 pm-6:18 pm

1 stop27h 17m

Idaho Falls Fanning Field

Fri 1/23

6:58 pm-9:59 pm

1 stop25h 01m

$414

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 12/8

6:30 am-1:27 pm

1 stop8h 57m

Idaho Falls Fanning Field

Fri 12/12

1:58 pm-11:00 pm

1 stop7h 02m

$415

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 12/8

12:32 pm-10:21 pm

2 stops11h 49m

Idaho Falls Fanning Field

Fri 12/12

6:00 am-6:03 pm

2 stops10h 03m

$425

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 1/16

1:44 pm-10:36 pm

2 stops10h 52m

Idaho Falls Fanning Field

Fri 1/23

7:20 am-9:30 pm

2 stops12h 10m

$425

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 12/8

7:15 am-6:26 pm

2 stops13h 11m

Idaho Falls Fanning Field

Fri 12/12

1:17 pm-12:12 am

2 stops8h 55m

$522

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 11/14

7:43 am-1:28 pm

1 stop7h 45m

Idaho Falls Fanning Field

Tue 11/18

1:58 pm-11:00 pm

1 stop7h 02m

$526

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 11/14

6:04 am-1:28 pm

1 stop9h 24m

Idaho Falls Fanning Field

Tue 11/18

1:58 pm-10:33 pm

1 stop6h 35m

$526

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 11/14

5:10 pm-10:19 pm

1 stop7h 09m

Idaho Falls Fanning Field

Tue 11/18

6:57 pm-9:10 am

2 stops12h 13m

$531

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 11/11

7:43 am-3:13 pm

1 stop9h 30m

Idaho Falls Fanning Field

Tue 11/18

6:05 am-4:40 pm

1 stop8h 35m

$532

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 11/11

5:00 pm-11:59 pm

1 stop8h 59m

Idaho Falls Fanning Field

Tue 11/18

6:05 am-9:59 pm

1 stop13h 54m

$551

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 31 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, September is the cheapest month in which you can book a flight from District of Columbia to Idaho Falls (average of $295). Flying from District of Columbia to Idaho Falls in December is currently the most expensive (average of $501). 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 October 30, 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 8h 57m. Fly via Alaska Airlines, American Airlines, or Delta 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, September is the cheapest month in which you can book a flight from District of Columbia to Idaho Falls (average of $295). Flying from District of Columbia to Idaho Falls in December is currently the most expensive (average of $501). 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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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$334Average$697FlexibilityNo cancel feeOn-time71%
DeltaCheapest$334Average$478FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$408Average$728FlexibilityNo cancel feeOn-time69%

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