How long is the flight from Washington, D.C. to Idaho Falls?

Airlines like Delta, United Airlines, and Alaska Airlines fly from Washington, D.C. to Idaho Falls in about 8h 54m. The time it takes to get you to your destination can typically vary by up to 1h 24m. The distance from Washington, D.C. to Idaho Falls is about 1811 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

United Airlines, at $333, was found to be the cheapest airline from Washington, D.C. to Idaho Falls. An alternate airline flying to your destination would be Alaska Airlines.

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.

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).

What are the most popular routes from Washington, D.C. to Idaho Falls?

When deciding which route to take from Washington, D.C. to Idaho Falls consider Washington, D.C. Dulles Intl - Idaho Falls Fanning Field, Washington, D.C. Reagan-National - Idaho Falls Fanning Field or Baltimore/Washington - Idaho Falls Fanning Field as they are the most popular.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Idaho Falls as you normally would.

Most accurate provider : When it comes to deals on Washington, D.C.-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.-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Idaho Falls flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-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.-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Idaho Falls from Washington, D.C.?

Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to Idaho Falls from Washington, D.C.. Booking flights from Washington, D.C. to Fanning Field (IDA) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 3 different airlines.

Can I find deals for flights from Washington, D.C. to Idaho Falls that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Idaho Falls?

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

Can I find deals for business class flights from Washington, D.C. to Idaho Falls?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$190+ Cheap Flights from Washington, D.C. to Idaho Falls

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Cheap flight deals from Washington, D.C. to Idaho Falls

Cheapest

Best

Last-minute

One-way

Cheapest flights from Washington, D.C. to Idaho Falls
Explore the most affordable flight options available from Washington, D.C. to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.

Tue 10/67:35 am -

1 stop6h 47m

Fri 10/96:56 pm -

1 stop8h 49m

Deal found 9/10

$359

Tue 10/132:11 pm -

2 stops9h 59m

Thu 10/156:56 pm -

1 stop8h 49m

Deal found 9/10

$364

Tue 10/132:11 pm -

2 stops9h 59m

Fri 10/166:56 pm -

2 stops13h 01m

Deal found 9/10

$370

Thu 12/242:25 pm -

1 stop8h 54m

Wed 1/62:35 pm -

1 stop6h 38m

Deal found 9/9

$374

Fri 12/117:00 am -

1 stop7h 17m

Tue 1/56:45 pm -

1 stop9h 15m

Deal found 9/11

$379

Fri 10/236:00 am -

1 stop9h 20m

Tue 10/271:50 pm -

1 stop8h 09m

Deal found 9/8

$379

Tue 10/207:02 am -

1 stop10h 18m

Fri 10/231:58 pm -

1 stop8h 01m

Deal found 9/10

$379

Fri 12/112:59 pm -

2 stops9h 08m

Tue 1/56:45 pm -

2 stops12h 27m

Deal found 9/9

$389

Fri 10/166:00 am -

1 stop9h 20m

Mon 10/191:50 pm -

1 stop8h 09m

Deal found 9/12

$399

Fri 10/167:00 am -

1 stop7h 22m

Mon 10/196:56 pm -

1 stop8h 49m

Deal found 9/9

$409

Fri 10/308:23 am -

1 stop9h 15m

Mon 11/22:35 pm -

1 stop6h 33m

Deal found 9/7

$414

Fri 12/117:00 am -

1 stop7h 17m

Tue 1/51:10 pm -

1 stop8h 36m

Deal found 9/10

$414

Best flights from Washington, D.C. to Idaho Falls
Discover carefully curated flight deals from Washington, D.C. to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.

Tue 10/132:11 pm -

2 stops9h 59m

Thu 10/156:56 pm -

1 stop8h 49m

Deal found 9/10

$364

Thu 12/242:25 pm -

1 stop8h 54m

Wed 1/62:35 pm -

1 stop6h 38m

Deal found 9/9

$374

Tue 10/207:02 am -

1 stop10h 18m

Fri 10/231:58 pm -

1 stop8h 01m

Deal found 9/9

$379

Fri 10/236:00 am -

1 stop9h 20m

Tue 10/276:37 am -

2 stops10h 11m

Deal found 9/8

$466

Fri 12/117:00 am -

1 stop7h 17m

Tue 1/56:45 pm -

1 stop9h 15m

Deal found 9/11

$379

Fri 10/308:23 am -

1 stop9h 15m

Mon 11/22:35 pm -

1 stop6h 33m

Deal found 9/7

$414

Tue 10/132:11 pm -

2 stops9h 59m

Fri 10/166:56 pm -

2 stops13h 01m

Deal found 9/11

$389

Thu 12/242:25 pm -

1 stop8h 54m

Tue 1/52:35 pm -

1 stop6h 38m

Deal found 9/9

$432

Tue 10/136:13 am -

1 stop8h 09m

Fri 10/161:05 pm -

2 stops8h 21m

Deal found 9/10

$419

Thu 12/243:31 pm -

1 stop8h 15m

Wed 1/61:45 pm -

1 stop8h 14m

Deal found 9/7

$512

Fri 12/1110:59 am -

2 stops29h 28m

Tue 1/53:58 pm -

1 stop22h 02m

Deal found 9/11

$548

Fri 12/112:59 pm -

2 stops9h 08m

Tue 1/56:45 pm -

2 stops12h 27m

Deal found 9/8

$420

Fri 1/84:10 pm -

1 stop6h 58m

Tue 1/122:35 pm -

1 stop6h 25m

Deal found 9/7

$479

Thu 12/244:01 pm -

1 stop7h 18m

Wed 1/67:00 am -

1 stop5h 56m

Deal found 9/7

$496

Fri 12/117:00 am -

1 stop7h 17m

Tue 1/51:10 pm -

1 stop8h 36m

Deal found 9/8

$459

Tue 10/205:00 pm -

1 stop24h 20m

Fri 10/231:58 pm -

1 stop30h 01m

Deal found 9/7

$643

Thu 12/244:03 pm -

1 stop7h 16m

Tue 1/52:35 pm -

1 stop6h 25m

Deal found 9/7

$514

Tue 10/2011:57 am -

2 stops10h 57m

Fri 10/234:05 pm -

3 stops27h 09m

Deal found 9/9

$650

Mon 12/2111:55 am -

2 stops13h 08m

Wed 1/66:00 am -

1 stop8h 17m

Deal found 9/9

$657

Wed 12/2312:30 pm -

2 stops12h 33m

Fri 1/86:00 am -

1 stop8h 17m

Deal found 9/9

$664

Sun 12/275:59 pm -

1 stop7h 04m

Thu 1/76:45 pm -

2 stops13h 39m

Deal found 9/9

$674

Last-minute flights from Washington, D.C. to Idaho Falls
Discover last-minute flight deals from Washington, D.C. to Idaho Falls. Data last updated September 12, 2026 and is based on user searches.

Tue 10/67:35 am -

1 stop6h 47m

Fri 10/96:56 pm -

1 stop8h 49m

Deal found 9/10

$359

Wed 10/76:00 am -

2 stops29h 12m

Mon 10/129:33 pm -

1 stop30h 47m

Deal found 9/10

$433

Tue 10/132:11 pm -

2 stops9h 59m

Thu 10/156:56 pm -

1 stop8h 49m

Deal found 9/10

$364

Tue 10/132:11 pm -

2 stops9h 59m

Fri 10/166:56 pm -

2 stops13h 01m

Deal found 9/10

$370

Tue 10/136:13 am -

1 stop8h 09m

Fri 10/161:05 pm -

2 stops8h 21m

Deal found 9/10

$419

Fri 10/166:00 am -

1 stop9h 20m

Mon 10/191:50 pm -

1 stop8h 09m

Deal found 9/12

$399

Fri 10/167:00 am -

1 stop7h 22m

Mon 10/196:56 pm -

1 stop8h 49m

Deal found 9/9

$409

Sun 10/187:50 am -

2 stops32h 49m

Mon 10/267:30 pm -

1 stop8h 50m

Deal found 9/10

$442

Tue 10/207:02 am -

1 stop10h 18m

Fri 10/231:58 pm -

1 stop8h 01m

Deal found 9/10

$379

Fri 10/237:00 am -

1 stop8h 09m

Mon 10/261:50 pm -

1 stop8h 26m

Deal found 9/9

$379

Fri 10/236:00 am -

1 stop9h 20m

Tue 10/271:50 pm -

1 stop8h 09m

Deal found 9/8

$379

Fri 10/308:23 am -

1 stop9h 15m

Mon 11/22:35 pm -

1 stop6h 33m

Deal found 9/7

$414

One-way flights from Washington, D.C. to Idaho Falls
Search for one-way flight options from Washington, D.C. to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.

Fri 10/27:35 am -

1 stop6h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$190

Tue 9/295:00 am -

1 stop8h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$200

Sat 10/36:00 am -

2 stops11h 24m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$205

Wed 9/307:50 am -

1 stop9h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$210

Wed 9/307:00 am -

1 stop10h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$210

Wed 9/301:00 pm -

3 stops53h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$223

Wed 10/77:02 am -

1 stop10h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/11

$225

Wed 10/76:00 am -

2 stops29h 12m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/11

$229

Tue 9/296:00 am -

2 stops11h 21m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$230

Sat 10/38:37 am -

1 stop8h 47m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$240

Thu 10/16:30 am -

1 stop8h 58m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$240

Wed 9/306:00 am -

2 stops11h 21m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$254

Find flight deals from Washington, D.C. to Idaho Falls

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$359 (Delta)
One-way from	$190 (Delta)

Provider with most accurate pricing for Washington, D.C. (WAS)-Idaho Falls Fanning Field flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Idaho Falls Fanning Field flights.

Search Deals

From Washington, D.C. (WAS) to Idaho Falls Fanning Field

Search Deals

One-way flight from Washington, D.C. (WAS) to Idaho Falls Fanning Field

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreIdaho Falls

BWI Baltimore/Washington - IDA Idaho Falls Fanning Field

BWIIDA

Baltimore/Washington

Fri 10/2

7:35 am-12:15 pm

1 stop6h 40m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$190

Washington, D.C.Idaho Falls

IAD Washington, D.C. Dulles Intl - IDA Idaho Falls Fanning Field

IADIDA

Washington, D.C. Dulles Intl

Wed 9/30

7:00 am-3:20 pm

1 stop10h 20m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$210

Washington, D.C.Idaho Falls

DCA Washington, D.C. Reagan-National - IDA Idaho Falls Fanning Field

DCAIDA

Washington, D.C. Reagan-National

Wed 9/30

1:00 pm-4:00 pm

3 stops53h 00m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$223

Washington, D.C.Idaho Falls

IAD Washington, D.C. Dulles Intl - IDA Idaho Falls Fanning Field

IADIDA

Washington, D.C. Dulles Intl

Wed 10/7

6:00 am-9:12 am

2 stops29h 12m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$229

Washington, D.C.Idaho Falls

DCA Washington, D.C. Reagan-National - IDA Idaho Falls Fanning Field

DCAIDA

Washington, D.C. Reagan-National

Tue 9/29

6:00 am-3:21 pm

2 stops11h 21m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$230

Washington, D.C.Idaho Falls

DCA Washington, D.C. Reagan-National - IDA Idaho Falls Fanning Field

DCAIDA

Washington, D.C. Reagan-National

Wed 9/30

6:00 am-3:21 pm

2 stops11h 21m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$254

Washington, D.C.Idaho Falls

DCA Washington, D.C. Reagan-National - IDA Idaho Falls Fanning Field

DCAIDA

Washington, D.C. Reagan-National

Wed 10/7

6:00 am-3:21 pm

2 stops11h 21m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$257

Washington, D.C.Idaho Falls

IAD Washington, D.C. Dulles Intl - IDA Idaho Falls Fanning Field

IADIDA

Washington, D.C. Dulles Intl

Tue 10/6

6:13 am-12:22 pm

1 stop8h 09m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$270

BaltimoreIdaho Falls

BWI Baltimore/Washington - IDA Idaho Falls Fanning Field

BWIIDA

Baltimore/Washington

Wed 10/7

6:38 am-9:12 am

3 stops28h 34m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$275

Washington, D.C.Idaho Falls

DCA Washington, D.C. Reagan-National - IDA Idaho Falls Fanning Field

DCAIDA

Washington, D.C. Reagan-National

Sun 10/4

6:00 am-3:24 pm

2 stops11h 24m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 41 resultsSorted by cheapest first

...

Compare providers for flights from Washington, D.C. to Idaho Falls

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Idaho Falls in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust 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.-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.-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Idaho Falls flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-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.-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 Washington, D.C. to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Washington, D.C. with our price prediction graph.

WAS-IDA

BWI-IDA

DCA-IDA

IAD-IDA

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. to Idaho Falls

WAS-IDA

BWI-IDA

DCA-IDA

IAD-IDA

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Idaho Falls

Read through reviews of airlines operating flights from Washington, D.C. to Idaho Falls, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,567 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Delta

7.8

Good

8,567 reviews

Delta

7.8

Good

8,567 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

United Airlines

7.4

Good

10,207 reviews

Delta

7.8

Good

8,567 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

American Airlines

7.1

Good

12,051 reviews

Delta

7.8

Good

8,567 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Related info for your journey

What airport do you fly into for flights to Idaho Falls from Washington, D.C.?
Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to Idaho Falls from Washington, D.C.. Booking flights from Washington, D.C. to Fanning Field (IDA) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 3 different airlines.
How long is the flight from Washington, D.C. to Idaho Falls?
Airlines like Delta, United Airlines, and Alaska Airlines fly from Washington, D.C. to Idaho Falls in about 8h 54m. The time it takes to get you to your destination can typically vary by up to 1h 24m. The distance from Washington, D.C. to Idaho Falls is about 1811 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Washington, D.C. to Idaho Falls round-trip?
United Airlines, at $333, was found to be the cheapest airline from Washington, D.C. to Idaho Falls. An alternate airline flying to your destination would be Alaska Airlines.
What are the most popular routes from Washington, D.C. to Idaho Falls?
When deciding which route to take from Washington, D.C. to Idaho Falls consider Washington, D.C. Dulles Intl - Idaho Falls Fanning Field, Washington, D.C. Reagan-National - Idaho Falls Fanning Field or Baltimore/Washington - Idaho Falls Fanning Field as they are the most popular.
Can I find deals for flights from Washington, D.C. to Idaho Falls that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Idaho Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Idaho Falls.
Can I find deals for business class flights from Washington, D.C. to Idaho Falls?
Yes. Cheapflights offers flight deals from Washington, D.C. 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.

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Alternative routes for Washington, D.C. to Idaho Falls

Dulles Intl to Spokane flights

Dulles Intl to Boise flights

Reagan-National to Spokane flights

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Dulles Intl to Idaho Falls flights

Reagan-National to Idaho Falls flights

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Reagan-National to Pocatello flights

Dulles Intl to Pocatello flights

Top 3 airlines flying from Washington, D.C. to Idaho Falls

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$274	Average$595	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$433	Average$708	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$448	Average$651	FlexibilityNo cancel fee	On-time71%

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$190+ Cheap flights from Washington, D.C. (WAS) to Idaho Falls (IDA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Idaho Falls with Cheapflights

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Cheap flight deals from Washington, D.C. to Idaho Falls

Cheapest flights from Washington, D.C. to Idaho FallsExplore the most affordable flight options available from Washington, D.C. to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.

Explore the most affordable flight options available from Washington, D.C. to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.

Best flights from Washington, D.C. to Idaho FallsDiscover carefully curated flight deals from Washington, D.C. to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.

Discover carefully curated flight deals from Washington, D.C. to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.

Last-minute flights from Washington, D.C. to Idaho FallsDiscover last-minute flight deals from Washington, D.C. to Idaho Falls. Data last updated September 12, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Idaho Falls. Data last updated September 12, 2026 and is based on user searches.

One-way flights from Washington, D.C. to Idaho FallsSearch for one-way flight options from Washington, D.C. to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.

Search for one-way flight options from Washington, D.C. to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.

Find flight deals from Washington, D.C. to Idaho Falls

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

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

Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Idaho Falls in September.

Best time to book a flight from Washington, D.C. to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Washington, D.C. with our price prediction graph.

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Reviews of airlines servicing Idaho Falls

Read through reviews of airlines operating flights from Washington, D.C. to Idaho Falls, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Idaho Falls from Washington, D.C.?

How long is the flight from Washington, D.C. to Idaho Falls?

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

What are the most popular routes from Washington, D.C. to Idaho Falls?

Can I find deals for flights from Washington, D.C. to Idaho Falls that include hotel bookings?

How can I find direct flights from Washington, D.C. to Idaho Falls?

Can I find deals for business class flights from Washington, D.C. to Idaho Falls?

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Alternative routes for Washington, D.C. to Idaho Falls

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Complete your trip

Complete your trip to Idaho Falls by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Washington, D.C. to Idaho Falls by cabin class

Find flights from Washington, D.C. to Idaho Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Idaho Falls

Explore flights to Idaho Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.

Washington, D.C. and Idaho Falls flights

Browse other Washington, D.C. and Idaho Falls flight options. Last updated on September 12, 2026.

Other flights from Washington, D.C.

Browse through other flights departing from Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.

Popular flight searches

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Washington, D.C. to Idaho Falls flights

Consider these flights traveling from Washington, D.C. to Idaho Falls.

Top 3 airlines flying from Washington, D.C. to Idaho Falls

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Cheapest flights from Washington, D.C. to Idaho Falls
Explore the most affordable flight options available from Washington, D.C. to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.

Best flights from Washington, D.C. to Idaho Falls
Discover carefully curated flight deals from Washington, D.C. to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.

Last-minute flights from Washington, D.C. to Idaho Falls
Discover last-minute flight deals from Washington, D.C. to Idaho Falls. Data last updated September 12, 2026 and is based on user searches.

One-way flights from Washington, D.C. to Idaho Falls
Search for one-way flight options from Washington, D.C. to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.