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Idaho Falls

$219+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — IDA
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
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 March 13, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 3/8$329
This Delta deal was found by Cheapflights users on 3/7. 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.
Tue 9/295:00 pm
DCA
-
IDA
1 stop7h 14m
Delta
Tue 10/66:00 am
IDA
-
DCA
2 stops11h 19m
Delta
Deal found 3/7$414
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 9/266:30 am
DCA
-
IDA
1 stop7h 42m
American Airlines
Wed 10/71:43 pm
IDA
-
DCA
1 stop7h 52m
American Airlines
Deal found 3/7$419
This American Airlines deal was found by Cheapflights users on 3/7. 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 9/3011:30 am
DCA
-
IDA
2 stops11h 34m
American Airlines
Tue 10/61:43 pm
IDA
-
DCA
1 stop7h 52m
American Airlines
Deal found 3/7$424
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:45 pm
DCA
-
IDA
2 stops11h 54m
American Airlines
Mon 5/111:43 pm
IDA
-
DCA
1 stop8h 16m
American Airlines
Deal found 3/12$429
This American Airlines deal was found by Cheapflights users on 3/7. 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 9/286:30 am
DCA
-
IDA
1 stop7h 42m
American Airlines
Mon 10/51:43 pm
IDA
-
DCA
1 stop7h 52m
American Airlines
Deal found 3/7$435
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 3/242:16 pm
DCA
-
IDA
2 stops11h 08m
American Airlines
Sat 3/286:05 am
IDA
-
DCA
2 stops11h 46m
American Airlines
Deal found 3/9$449
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 3/256:30 am
DCA
-
IDA
1 stop9h 18m
American Airlines
Sat 3/286:05 am
IDA
-
DCA
2 stops12h 49m
American Airlines
Deal found 3/11$464

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 March 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$449
(American Airlines)

One-way from

$219
(United Airlines)
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

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 March 13, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 4/22

9:59 am-10:40 pm

2 stops14h 41m

Idaho Falls Fanning Field

Wed 4/29

6:00 am-9:59 pm

1 stop13h 59m

$537

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 4/16

11:00 am-10:40 pm

2 stops13h 40m

Idaho Falls Fanning Field

Sat 4/18

5:47 am-6:02 pm

2 stops10h 15m

$667
Quickest round-trip

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 4/3

6:30 am-1:48 pm

1 stop9h 18m

Idaho Falls Fanning Field

Fri 4/10

1:43 pm-11:59 pm

1 stop8h 16m

$756

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 3/23

5:12 pm-10:16 pm

1 stop7h 04m

Idaho Falls Fanning Field

Tue 3/24

6:55 pm-10:20 am

2 stops13h 25m

$784

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 4/6

8:00 am-4:19 pm

1 stop10h 19m

Idaho Falls Fanning Field

Wed 4/8

6:00 am-4:10 pm

1 stop8h 10m

$784

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 4/17

11:00 am-10:40 pm

2 stops13h 40m

Idaho Falls Fanning Field

Sun 4/19

6:58 pm-10:19 am

2 stops13h 21m

$785

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 4/4

5:12 pm-10:16 pm

1 stop7h 04m

Idaho Falls Fanning Field

Mon 4/13

6:58 pm-9:09 am

2 stops12h 11m

$909

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 4/6

8:00 am-4:19 pm

1 stop10h 19m

Idaho Falls Fanning Field

Sun 4/12

4:59 pm-9:59 pm

1 stop27h 00m

$1,011
Cheapest one-way

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 4/25

6:00 am-4:14 pm

2 stops12h 14m

$219

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 4/16

8:00 am-3:27 pm

3 stops33h 27m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 18 resultsSorted by cheapest first
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 March.
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 $238). Flying from Washington, D.C. Reagan-National Airport to Idaho Falls in May is currently the most expensive (average of $563). 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 March 13, 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
7.1
Good
11,446 reviews

Comfort

7.2

Crew

7.9

Overall

7.1

Boarding

7.5

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,446 reviews
American Airlines
7.1
Good
11,446 reviews

Comfort

7.2

Crew

7.9

Overall

7.1

Boarding

7.5

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 18m. 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 $238). Flying from Washington, D.C. Reagan-National Airport to Idaho Falls in May is currently the most expensive (average of $563). 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 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 March 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$480Average$571FlexibilityNo cancel feeOn-time71%

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