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Idaho Falls

$278+ Cheap flights from Reagan-National (DCA) 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — IDA
out 11 — out 181
sáb 10/11
sáb 10/18
1 adult, Economy
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Cheap flight deals from Reagan-National to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 setembro 11, 2025.

Round-trip from

$414
(United Airlines)

One-way from

$278
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$620
From Washington, D.C. Reagan-National to Idaho Falls Fanning Field
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One-way flight from Washington, D.C. Reagan-National to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 8% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Reagan-National to Idaho Falls

Cheapest flights from Reagan-National to Idaho Falls
Explore the most affordable flight options available from Reagan-National to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on setembro 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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.
ter 10/74:23 pmDCA - IDA
1 stop6h 29mUnited Airlines
sex 10/107:00 amIDA - DCA
1 stop6h 07mUnited Airlines
Deal found 9/10$414
This United Airlines deal was found by Cheapflights users on 9/10. 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.
dom 10/54:23 pmDCA - IDA
1 stop6h 29mUnited Airlines
dom 10/125:00 amIDA - DCA
1 stop8h 07mUnited Airlines
Deal found 9/10$415
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 10/215:00 amDCA - IDA
1 stop9h 25mAmerican Airlines
sex 10/241:11 pmIDA - DCA
1 stop8h 01mAmerican Airlines
Deal found 9/11$447
This American Airlines deal was found by Cheapflights users on 9/9. 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.
sáb 10/186:59 amDCA - IDA
1 stop7h 25mAmerican Airlines
sex 10/241:11 pmIDA - DCA
1 stop7h 04mAmerican Airlines
Deal found 9/9$448
This American Airlines deal was found by Cheapflights users on 9/10. 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.
sáb 10/45:00 amDCA - IDA
1 stop9h 59mAmerican Airlines
ter 10/712:55 pmIDA - DCA
1 stop8h 11mAmerican Airlines
Deal found 9/10$487
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 10/410:45 pmDCA - IDA
1 stop15h 24mAmerican Airlines
sáb 10/116:44 amIDA - DCA
1 stop16h 15mAmerican Airlines
Deal found 9/11$495
This United Airlines deal was found by Cheapflights users on 9/9. 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.
dom 9/214:24 pmDCA - IDA
1 stop8h 24mUnited Airlines
qua 9/245:00 amIDA - DCA
1 stop8h 06mUnited Airlines
Deal found 9/9$531
This American Airlines deal was found by Cheapflights users on 9/9. 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.
ter 9/2311:59 amDCA - IDA
2 stops11h 26mAmerican Airlines
sex 9/2612:54 pmIDA - DCA
1 stop8h 32mAmerican Airlines
Deal found 9/9$536

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 setembro 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Idaho Falls that are best for you.

Fly from

Reagan-National

Fly to

Idaho Falls

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

qua 2/18

5:00 am-12:25 pm

1 stop9h 25m

Idaho Falls Fanning Field

sex 2/27

1:34 pm-12:40 am

1 stop9h 06m

$414

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

ter 10/21

5:00 am-12:25 pm

2 stops9h 25m

Idaho Falls Fanning Field

sex 10/24

1:11 pm-11:12 pm

1 stop8h 01m

$452

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

sáb 10/18

11:59 am-9:48 pm

2 stops11h 49m

Idaho Falls Fanning Field

sex 10/24

1:11 pm-10:15 pm

1 stop7h 04m

$453

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

sáb 10/4

3:33 pm-9:25 pm

1 stop7h 52m

Idaho Falls Fanning Field

ter 10/7

6:44 am-7:58 pm

2 stops11h 14m

$492

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

sáb 10/4

10:45 pm-12:09 pm

1 stop15h 24m

Idaho Falls Fanning Field

sáb 10/11

6:44 am-12:59 am

1 stop16h 15m

$495

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

ter 3/10

6:30 am-12:22 pm

1 stop7h 52m

Idaho Falls Fanning Field

qua 3/11

1:43 pm-12:40 am

1 stop8h 57m

$505

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

dom 9/21

1:00 pm-2:49 pm

2 stops27h 49m

$278

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

dom 9/21

6:30 am-12:09 pm

1 stop7h 39m

$321

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

qui 9/18

6:00 pm-4:05 pm

3 stops24h 05m

$393

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

qui 9/18

10:45 pm-12:24 pm

1 stop15h 39m

$623

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 11 results
1
2

Best time to book a flight from Reagan-National to Idaho Falls

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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho Falls (average of $380). Flying from Washington, D.C. Reagan-National Airport to Idaho Falls in December is currently the most expensive (average of $578). 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.

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 setembro 11, 2025.
See what other customers who have flown with American Airlines from Washington, D.C. Reagan-National Airport to Idaho Falls have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Overall

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Crew

8.0

Boarding

7.5

Comfort

7.2

Overall

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

    For a flight from Washington, D.C. Reagan-National 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. Reagan-National per day. 1 airline has flights to Idaho Falls Fanning Field from Washington, D.C. Reagan-National on a regular basis.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Idaho Falls?

    Departing from Washington, D.C. Reagan-National Airport to Idaho Falls will take you 9h 25m. The distance from Washington, D.C. Reagan-National Airport to Idaho Falls is about 1835 mi.

  • What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Idaho Falls round-trip?

    American Airlines, at $480, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Idaho Falls..

  • Can I find deals for flights from Reagan-National to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Idaho Falls?

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

  • Can I find deals for business class flights from Reagan-National to Idaho Falls?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho Falls (average of $380). Flying from Washington, D.C. Reagan-National Airport to Idaho Falls in December is currently the most expensive (average of $578). 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 Reagan-National to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Reagan-National to Idaho Falls

Discover the top airline that operate flights from Reagan-National 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 setembro 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$480Average$618FlexibilityNo cancel feeOn-time71%

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