What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Idaho Falls round-trip?

American Airlines, at $391, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Idaho Falls.Alternate airlines to your destination round-trip include Delta and Alaska Airlines.

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 Delta, with whom users have recently found tickets for as low as $196. However, be on the lookout for offers from American Airlines and Alaska Airlines, as they are both options that can get you from Washington, D.C. Reagan-National Airport to Idaho Falls for a low price.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to Idaho Falls?

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Idaho Falls flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 51% when planning your travel around this day of the week.

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

Flights from Washington, D.C. Reagan-National Airport to Idaho Falls lean towards being more expensive in November. Prices are generally better when you fly from Washington, D.C. Reagan-National Airport to Idaho Falls in January, with the cheapest ticket starting at $392.

What is the cheapest time of day to fly from DCA to IDA?

When flying from Washington, D.C. Reagan-National Airport to Idaho Falls, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 9% versus a flight at noon.

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. 2 airlines have flights to Idaho Falls Fanning Field from Washington, D.C. Reagan-National on a regular basis.

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.

$196+ Flights from Washington, D.C. Reagan-National Airport to Idaho Falls

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Cheap flight deals from Reagan-National to Idaho Falls

Round-trip from	$391 (American Airlines)
One-way from	$196 (Delta)
Popular in	November
Cheapest in	January
Average price	$748

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. 6% potential increase in price ($45 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 13, 2025.

Sat 9/61:33 pmDCA - IDA

1 stop9h 52mAmerican Airlines

Sat 9/1312:43 pmIDA - DCA

1 stop8h 40mAmerican Airlines

Deal found 6/12

$391

Sat 9/65:20 pmDCA - IDA

1 stop7h 07mDelta

Sat 9/136:50 pmIDA - DCA

2 stops12h 22mDelta

Deal found 6/12

$396

Thu 10/239:59 amDCA - IDA

2 stops14h 39mAlaska Airlines

Sun 10/263:56 pmIDA - DCA

1 stop28h 03mAlaska Airlines

Deal found 6/12

$600

Thu 7/106:00 pmDCA - IDA

2 stops17h 44mUnited Airlines

Mon 7/146:03 pmIDA - DCA

2 stops14h 24mUnited Airlines

Deal found 6/12

$603

Wed 7/28:00 amDCA - IDA

1 stop9h 22mHawaiian Airlines

Wed 7/96:15 amIDA - DCA

1 stop8h 28mHawaiian Airlines

Deal found 6/11

$828

Best flights from Reagan-National to Idaho Falls
Discover carefully curated flight deals from Reagan-National to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2025.

Sat 9/61:33 pmDCA - IDA

1 stop9h 52mAmerican Airlines

Sat 9/1312:43 pmIDA - DCA

1 stop8h 40mAmerican Airlines

Deal found 6/12

$391

Sat 9/65:20 pmDCA - IDA

1 stop7h 07mDelta

Sat 9/136:50 pmIDA - DCA

2 stops12h 22mDelta

Deal found 6/12

$396

Thu 10/239:59 amDCA - IDA

2 stops14h 39mAlaska Airlines

Sun 10/263:56 pmIDA - DCA

1 stop28h 03mAlaska Airlines

Deal found 6/12

$600

Thu 7/106:00 pmDCA - IDA

2 stops17h 44mUnited Airlines

Mon 7/146:03 pmIDA - DCA

2 stops14h 24mUnited Airlines

Deal found 6/12

$603

Wed 7/28:00 amDCA - IDA

1 stop9h 22mHawaiian Airlines

Wed 7/96:15 amIDA - DCA

1 stop8h 28mHawaiian Airlines

Deal found 6/11

$828

Last-minute flights from Reagan-National to Idaho Falls
Discover last-minute flight deals from Reagan-National to Idaho Falls. Data last updated June 13, 2025 and is based on user searches.

Wed 6/189:39 amDCA - IDA

2 stops10h 33mDelta

Sat 6/216:00 amIDA - DCA

1 stop8h 34mDelta

Deal found 6/11

$900

Tue 6/246:58 pmDCA - IDA

2 stops22h 24mAlaska Airlines

Mon 4/64:00 pmIDA - DCA

2 stops26h 41mAlaska Airlines

Deal found 6/11

$715

Wed 7/28:00 amDCA - IDA

1 stop9h 22mHawaiian Airlines

Wed 7/96:15 amIDA - DCA

1 stop8h 28mHawaiian Airlines

Deal found 6/11

$828

Thu 7/106:00 pmDCA - IDA

2 stops17h 44mUnited Airlines

Mon 7/146:03 pmIDA - DCA

2 stops14h 24mUnited Airlines

Deal found 6/12

$603

Thu 7/105:00 amDCA - IDA

1 stop10h 17mAmerican Airlines

Mon 7/141:47 pmIDA - DCA

1 stop9h 02mAmerican Airlines

Deal found 6/12

$711

Mon 7/285:59 pmDCA - IDA

1 stop6h 30mDelta

Wed 7/306:52 pmIDA - DCA

2 stops11h 44mDelta

Deal found 6/11

$400

One-way flights from Reagan-National to Idaho Falls
Search for one-way flight options from Reagan-National to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated June 13, 2025.

Tue 9/25:20 pmDCA - IDA

1 stop7h 07mDelta

Deal found 6/12

$196

Sun 7/67:00 amDCA - IDA

1 stop12h 04mMultiple Airlines

Deal found 6/12

$198

Mon 9/2211:59 amDCA - IDA

2 stops11h 26mAmerican Airlines

Deal found 6/12

$203

Mon 7/286:58 pmDCA - IDA

2 stops29h 41mAlaska Airlines

Deal found 6/12

$279

Thu 7/314:17 pmDCA - IDA

1 stop8h 34mUnited Airlines

Deal found 6/12

$344

Cheapflights Fare Finder

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

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 9/6

3:33 pm-9:25 pm

1 stop7h 52m

Idaho Falls Fanning Field

Sat 9/13

12:43 pm-11:23 pm

1 stop8h 40m

$391

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 9/6

5:20 pm-10:27 pm

1 stop7h 07m

Idaho Falls Fanning Field

Sat 9/13

6:50 pm-9:12 am

2 stops12h 22m

$396

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 10/23

9:59 am-10:38 pm

2 stops14h 39m

Idaho Falls Fanning Field

Sun 10/26

3:56 pm-9:59 pm

1 stop28h 03m

$600

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 7/10

6:00 pm-9:44 am

2 stops17h 44m

Idaho Falls Fanning Field

Mon 7/14

6:03 pm-10:27 am

2 stops14h 24m

$603

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 7/2

8:00 am-3:22 pm

1 stop9h 22m

Idaho Falls Fanning Field

Wed 7/9

6:15 am-4:43 pm

1 stop8h 28m

$828

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 9/2

5:20 pm-10:27 pm

1 stop7h 07m

$196

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sun 7/6

7:00 am-5:04 pm

1 stop12h 04m

$198

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 9/22

11:59 am-9:25 pm

2 stops11h 26m

$203

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 7/28

6:58 pm-10:39 pm

2 stops29h 41m

$279

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 7/31

4:17 pm-10:51 pm

1 stop8h 34m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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.

Rainfall in Idaho Falls by month

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Idaho Falls

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,950 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.9

Good

2,496 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,787 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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. 2 airlines have flights to Idaho Falls Fanning Field from Washington, D.C. Reagan-National on a regular basis.
What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Idaho Falls round-trip?
American Airlines, at $391, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Idaho Falls.Alternate airlines to your destination round-trip include Delta and Alaska Airlines.
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 Delta, with whom users have recently found tickets for as low as $196. However, be on the lookout for offers from American Airlines and Alaska Airlines, 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, 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

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Top 2 airlines flying from Reagan-National to Idaho Falls

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$480	Average$618	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$736	Average$838	FlexibilityNo cancel fee	On-time69%

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$196+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Idaho Falls with Cheapflights

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Cheap flight deals from Reagan-National to Idaho Falls

Round-trip from

One-way from

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Find flight deals from Reagan-National to Idaho Falls

Cheapest flights from Reagan-National to Idaho FallsExplore 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 June 13, 2025.

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 June 13, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Idaho Falls that are best for you.

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.

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?

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

Reviews of airlines servicing Idaho Falls

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?

What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Idaho Falls round-trip?

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

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

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

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

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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Reagan-National to Idaho Falls

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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 June 13, 2025.