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Idaho Falls

$374+ 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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — IDA
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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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 October 28, 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 12/812:32 pmDCA - IDA
2 stops11h 49mDelta
Fri 12/126:00 amIDA - DCA
1 stop8h 01mDelta
Deal found 10/27$420
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.
Wed 11/265:10 pmDCA - IDA
1 stop7h 09mDelta
Wed 12/31:17 pmIDA - DCA
2 stops8h 23mDelta
Deal found 10/27$481
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 10/26. 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.
Wed 11/54:17 pmDCA - IDA
1 stop8h 35mUnited Airlines
Sun 11/95:00 amIDA - DCA
1 stop7h 55mUnited Airlines
Deal found 10/26$576
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 12/295:00 pmDCA - IDA
1 stop9h 07mAlaska Airlines
Mon 1/52:43 pmIDA - DCA
1 stop23h 22mAlaska Airlines
Deal found 10/26$609
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:00 pmDCA - IDA
1 stop8h 59mAlaska Airlines
Sun 11/166:05 amIDA - DCA
1 stop8h 48mAlaska Airlines
Deal found 10/27$644
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.
Wed 11/261:44 pmDCA - IDA
2 stops10h 50mAmerican Airlines
Wed 12/37:00 amIDA - DCA
2 stops13h 07mAmerican Airlines
Deal found 10/27$655

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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$384
(Alaska Airlines)

One-way from

$374
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$447
Provider with most accurate pricing for Washington, D.C. Reagan-National-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Idaho Falls Fanning Field flights.
Search Deals
From Washington, D.C. Reagan-National to Idaho Falls Fanning Field
Search Deals
One-way flight from Washington, D.C. Reagan-National 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 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 October 28, 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

Wed 1/14

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

$384

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

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 11/26

5:10 pm-10:19 pm

1 stop7h 09m

Idaho Falls Fanning Field

Wed 12/3

1:17 pm-11:40 pm

2 stops8h 23m

$481

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

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 11/5

4:17 pm-10:52 pm

1 stop8h 35m

Idaho Falls Fanning Field

Sun 11/9

5:00 am-2:55 pm

1 stop7h 55m

$576

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 12/29

5:00 pm-12:07 am

1 stop9h 07m

Idaho Falls Fanning Field

Mon 1/5

2:43 pm-4:05 pm

1 stop23h 22m

$609

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 11/12

5:00 pm-11:59 pm

1 stop8h 59m

Idaho Falls Fanning Field

Sun 11/16

6:05 am-4:53 pm

1 stop8h 48m

$644

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 13 results
1
2

Compare providers for flights from Reagan-National 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 Reagan-National to Idaho Falls in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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. Reagan-National Airport-Idaho Falls flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-Idaho Falls flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National 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. Reagan-National Airport-Idaho Falls flights, Cheapflights users trust eDreams the most. eDreams 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. Reagan-National 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 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, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho Falls (average of $313). Flying from Washington, D.C. Reagan-National Airport to Idaho Falls in May is currently the most expensive (average of $704). 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 October 28, 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
11,032 reviews

Boarding

7.5

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.4

Entertainment

6.9

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
11,032 reviews
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.4

Entertainment

6.9

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 8h 57m. The distance from Washington, D.C. Reagan-National Airport to Idaho Falls is about 1835 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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..

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $374. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Washington, D.C. Reagan-National Airport to Idaho Falls for a low price.

  • 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, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho Falls (average of $313). Flying from Washington, D.C. Reagan-National Airport to Idaho Falls in May is currently the most expensive (average of $704). 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 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$480Average$571FlexibilityNo cancel feeOn-time71%

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