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Idaho Falls

$144+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — IDA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 10/278:00 am
DCA
-
IDA
1 stop9h 29m
Alaska Airlines
Sat 10/316:15 am
IDA
-
DCA
1 stop7h 53m
Alaska Airlines
Deal found 1/26$309
This Delta deal was found by Cheapflights users on 1/25. 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 2/185:10 pm
DCA
-
IDA
1 stop7h 11m
Delta
Fri 2/276:35 pm
IDA
-
DCA
2 stops12h 35m
Delta
Deal found 1/25$339
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/43:10 pm
DCA
-
IDA
2 stops9h 47m
Delta
Mon 2/96:35 pm
IDA
-
DCA
2 stops12h 35m
Delta
Deal found 1/26$415
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
Wed 2/185:00 pm
DCA
-
IDA
1 stop8h 36m
Alaska Airlines
Fri 2/275:20 pm
IDA
-
DCA
2 stops25h 42m
Alaska Airlines
Deal found 1/26$426
This United Airlines deal was found by Cheapflights users on 1/25. 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 6/304:07 pm
DCA
-
IDA
1 stop8h 46m
United Airlines
Thu 7/165:00 am
IDA
-
DCA
1 stop7h 56m
United Airlines
Deal found 1/25$508
This American Airlines deal was found by Cheapflights users on 1/24. 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.
Thu 7/305:00 am
DCA
-
IDA
1 stop9h 11m
American Airlines
Wed 8/512:46 pm
IDA
-
DCA
1 stop8h 54m
American Airlines
Deal found 1/24$520
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:43 am
DCA
-
IDA
1 stop7h 30m
American Airlines
Fri 7/1012:41 pm
IDA
-
DCA
1 stop6h 18m
American Airlines
Deal found 1/26$547

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$339
(Delta)

One-way from

$144
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$403
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. 8% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 27, 2026.
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 2/18

5:10 pm-10:21 pm

1 stop7h 11m

Idaho Falls Fanning Field

Fri 2/27

6:35 pm-9:10 am

2 stops12h 35m

$339

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

5:00 pm-11:36 pm

1 stop8h 36m

Idaho Falls Fanning Field

Fri 2/27

5:20 pm-9:02 pm

2 stops25h 42m

$426

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 6/30

4:07 pm-10:53 pm

1 stop8h 46m

Idaho Falls Fanning Field

Thu 7/16

5:00 am-2:56 pm

1 stop7h 56m

$508

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 7/7

10:00 am-6:14 pm

2 stops10h 14m

Idaho Falls Fanning Field

Fri 7/10

6:50 pm-8:37 am

2 stops11h 47m

$548

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 7/7

11:56 am-9:57 pm

2 stops12h 01m

Idaho Falls Fanning Field

Fri 7/10

12:41 pm-8:59 pm

1 stop6h 18m

$552

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 6/30

1:52 pm-9:57 pm

1 stop10h 05m

Idaho Falls Fanning Field

Thu 7/16

12:41 pm-11:53 pm

1 stop9h 12m

$559

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 5/23

7:43 am-1:13 pm

1 stop7h 30m

Idaho Falls Fanning Field

Sat 5/30

12:41 pm-8:59 pm

1 stop6h 18m

$559

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 7/22

7:43 am-1:13 pm

1 stop7h 30m

Idaho Falls Fanning Field

Mon 7/27

12:41 pm-9:11 am

1 stop18h 30m

$562

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/25

1:28 pm-11:24 pm

2 stops11h 56m

$144

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 4/7

8:00 am-4:19 pm

1 stop10h 19m

$155

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 15 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 January.
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. Reagan-National Airport-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. Reagan-National Airport-Idaho Falls flight deals on Cheapflights vs. FlightHub >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 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. 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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho Falls (average of $260). 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 January 27, 2026.
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
11,197 reviews

Crew

8.0

Food

6.4

Entertainment

6.9

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,197 reviews
American Airlines
7.2
Good
11,197 reviews

Crew

8.0

Food

6.4

Entertainment

6.9

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 7h 11m. 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..

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho Falls (average of $260). 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

Traveling to a place near Idaho Falls?

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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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$480Average$571FlexibilityNo cancel feeOn-time71%

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