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

Alaska Airlines, Delta, and United Airlines can get you from Idaho Falls to Washington, D.C. in just under 6h 35m. Your travel time can differ by up to 2h 47m. The distance between Idaho Falls and Washington, D.C. is about 1845 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 Idaho Falls to Washington, D.C. round-trip?

United Airlines, at $394, was found to be the cheapest airline from Idaho Falls to Washington, D.C.. An alternate airline flying to your destination would be American Airlines.

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

$204 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $208 and $208, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

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

Most accurate provider : When it comes to deals on Idaho Falls-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Washington, D.C. flight searches over the past month and is updated monthly.

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

What airport do you fly from for flights from Idaho Falls to 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 Washington, D.C. from Idaho Falls. Booking flights from Fanning Field (IDA) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 2 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Idaho Falls to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$204+ Flights from Idaho Falls to Washington, D.C.

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$354 (Alaska Airlines)
One-way from	$204 (Alaska Airlines)

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

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

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

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

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

Cheapest flights from Idaho Falls to Washington, D.C.
Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Thu 12/46:05 amIDA - IAD

1 stop8h 31mAlaska Airlines

Wed 12/107:34 amIAD - IDA

1 stop18h 25mAlaska Airlines

Deal found 10/21

$354

Thu 12/46:05 amIDA - DCA

1 stop8h 03mHawaiian Airlines

Wed 12/108:00 amDCA - IDA

1 stop10h 27mHawaiian Airlines

Deal found 10/21

$384

Wed 12/310:58 amIDA - IAD

1 stop8h 26mUnited Airlines

Sat 1/35:20 pmIAD - IDA

1 stop7h 39mUnited Airlines

Deal found 10/20

$435

Thu 12/47:06 pmIDA - IAD

2 stops12h 05mDelta

Wed 12/107:05 amIAD - IDA

1 stop17h 16mDelta

Deal found 10/21

$442

Sat 11/86:05 amIDA - BWI

1 stop10h 11mAlaska Airlines

Wed 11/127:38 amBWI - IDA

1 stop9h 35mAlaska Airlines

Deal found 10/21

$443

Sat 11/86:53 pmIDA - BWI

1 stop9h 07mDelta

Wed 11/1212:15 pmBWI - IDA

2 stops12h 04mDelta

Deal found 10/21

$469

Sat 11/86:05 amIDA - IAD

1 stop8h 35mAlaska Airlines

Wed 11/126:13 pmIAD - IDA

1 stop23h 00mAlaska Airlines

Deal found 10/21

$472

Sat 11/81:15 pmIDA - IAD

1 stop8h 18mDelta

Wed 11/1212:37 pmIAD - IDA

2 stops11h 42mDelta

Deal found 10/21

$478

Sat 11/86:53 pmIDA - DCA

2 stops12h 17mDelta

Wed 11/125:10 pmDCA - IDA

1 stop7h 09mDelta

Deal found 10/21

$478

Wed 11/57:00 amIDA - BWI

2 stops12h 24mUnited Airlines

Sun 11/96:15 amBWI - IDA

2 stops9h 20mUnited Airlines

Deal found 10/21

$491

Sat 11/86:05 amIDA - DCA

1 stop8h 48mAlaska Airlines

Wed 11/128:00 amDCA - IDA

1 stop17h 59mAlaska Airlines

Deal found 10/21

$506

Sat 12/205:00 amIDA - IAD

1 stop6h 16mUnited Airlines

Mon 1/54:00 pmIAD - IDA

1 stop8h 59mUnited Airlines

Deal found 10/21

$510

Best flights from Idaho Falls to Washington, D.C.
Discover carefully curated flight deals from Idaho Falls to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2025.

Thu 12/46:05 amIDA - IAD

1 stop8h 31mAlaska Airlines

Wed 12/107:34 amIAD - IDA

1 stop18h 25mAlaska Airlines

Deal found 10/21

$354

Tue 3/106:45 pmIDA - BWI

1 stop9h 22mDelta

Wed 3/1112:15 pmBWI - IDA

2 stops12h 06mDelta

Deal found 10/20

$402

Tue 1/132:40 pmIDA - BWI

1 stop6h 35mUnited Airlines

Fri 1/164:10 pmBWI - IDA

1 stop7h 06mUnited Airlines

Deal found 10/21

$412

Tue 1/137:29 amIDA - BWI

2 stops11h 54mAmerican Airlines

Fri 1/166:17 amBWI - IDA

1 stop9h 20mAmerican Airlines

Deal found 10/21

$417

Tue 1/136:58 pmIDA - DCA

1 stop19h 11mAlaska Airlines

Fri 1/165:01 pmDCA - IDA

1 stop27h 17mAlaska Airlines

Deal found 10/21

$363

Tue 1/137:29 amIDA - IAD

2 stops11h 48mAmerican Airlines

Fri 1/166:14 amIAD - IDA

1 stop9h 23mAmerican Airlines

Deal found 10/21

$420

Fri 3/68:00 amIDA - IAD

1 stop19h 55mAlaska Airlines

Tue 3/107:00 amIAD - IDA

1 stop17h 38mAlaska Airlines

Deal found 10/20

$389

Wed 12/310:58 amIDA - IAD

1 stop8h 26mUnited Airlines

Sat 1/35:20 pmIAD - IDA

1 stop7h 39mUnited Airlines

Deal found 10/20

$435

Thu 12/47:06 pmIDA - IAD

2 stops12h 05mDelta

Wed 12/107:05 amIAD - IDA

1 stop17h 16mDelta

Deal found 10/21

$442

Fri 3/66:45 pmIDA - IAD

2 stops12h 26mDelta

Tue 3/107:00 amIAD - IDA

2 stops17h 21mDelta

Deal found 10/20

$472

Tue 3/108:00 amIDA - DCA

1 stop11h 55mAlaska Airlines

Wed 3/118:00 amDCA - IDA

1 stop16h 38mAlaska Airlines

Deal found 10/20

$463

Sat 12/205:00 amIDA - IAD

1 stop6h 16mUnited Airlines

Mon 1/54:00 pmIAD - IDA

1 stop8h 59mUnited Airlines

Deal found 10/21

$510

Sat 11/86:53 pmIDA - BWI

2 stops12h 29mDelta

Wed 11/1212:15 pmBWI - IDA

2 stops12h 04mDelta

Deal found 10/21

$474

Tue 3/108:23 amIDA - DCA

2 stops14h 17mAmerican Airlines

Wed 3/116:30 amDCA - IDA

1 stop7h 52mAmerican Airlines

Deal found 10/19

$542

Tue 3/108:00 amIDA - BWI

1 stop7h 55mAlaska Airlines

Wed 3/116:55 pmBWI - IDA

1 stop29h 43mAlaska Airlines

Deal found 10/19

$470

Sat 11/86:53 pmIDA - IAD

2 stops12h 17mDelta

Wed 11/1212:37 pmIAD - IDA

2 stops11h 42mDelta

Deal found 10/21

$483

Tue 3/1010:45 amIDA - BWI

2 stops8h 57mUnited Airlines

Wed 3/116:30 amBWI - IDA

2 stops9h 04mUnited Airlines

Deal found 10/19

$547

Sat 11/86:53 pmIDA - DCA

2 stops12h 17mDelta

Wed 11/1212:36 pmDCA - IDA

2 stops11h 43mDelta

Deal found 10/21

$483

Sat 11/86:05 amIDA - DCA

1 stop8h 48mAlaska Airlines

Wed 11/128:00 amDCA - IDA

1 stop17h 59mAlaska Airlines

Deal found 10/21

$506

Wed 12/35:07 pmIDA - DCA

1 stop26h 52mAlaska Airlines

Sat 1/38:00 amDCA - IDA

1 stop18h 07mAlaska Airlines

Deal found 10/20

$529

Wed 12/36:00 amIDA - DCA

2 stops10h 59mDelta

Sat 1/35:11 pmDCA - IDA

1 stop7h 41mDelta

Deal found 10/20

$648

Last-minute flights from Idaho Falls to Washington, D.C.
Discover last-minute flight deals from Idaho Falls to Washington, D.C.. Data last updated October 22, 2025 and is based on user searches.

Wed 11/57:00 amIDA - BWI

2 stops12h 24mUnited Airlines

Sun 11/96:15 amBWI - IDA

2 stops9h 20mUnited Airlines

Deal found 10/21

$491

Wed 11/56:53 pmIDA - BWI

1 stop9h 07mDelta

Sun 11/97:15 amBWI - IDA

1 stop7h 19mDelta

Deal found 10/21

$560

Wed 11/56:05 amIDA - IAD

1 stop8h 35mAlaska Airlines

Sun 11/96:13 pmIAD - IDA

1 stop23h 00mAlaska Airlines

Deal found 10/21

$600

Wed 11/52:45 pmIDA - IAD

2 stops14h 42mUnited Airlines

Sun 11/98:25 amIAD - IDA

1 stop7h 10mUnited Airlines

Deal found 10/21

$604

Sat 11/86:05 amIDA - BWI

1 stop10h 11mAlaska Airlines

Wed 11/127:38 amBWI - IDA

1 stop9h 35mAlaska Airlines

Deal found 10/21

$443

Sat 11/86:53 pmIDA - BWI

1 stop9h 07mDelta

Wed 11/1212:15 pmBWI - IDA

2 stops12h 04mDelta

Deal found 10/21

$469

Sat 11/86:05 amIDA - IAD

1 stop8h 35mAlaska Airlines

Wed 11/126:13 pmIAD - IDA

1 stop23h 00mAlaska Airlines

Deal found 10/21

$472

Sat 11/81:15 pmIDA - IAD

1 stop8h 18mDelta

Wed 11/1212:37 pmIAD - IDA

2 stops11h 42mDelta

Deal found 10/21

$478

Sat 11/86:53 pmIDA - DCA

2 stops12h 17mDelta

Wed 11/125:10 pmDCA - IDA

1 stop7h 09mDelta

Deal found 10/21

$478

Sat 11/86:05 amIDA - DCA

1 stop8h 48mAlaska Airlines

Wed 11/128:00 amDCA - IDA

1 stop17h 59mAlaska Airlines

Deal found 10/21

$506

Wed 11/196:05 amIDA - BWI

1 stop10h 11mAlaska Airlines

Wed 11/267:00 amBWI - IDA

1 stop18h 59mAlaska Airlines

Deal found 10/20

$660

Wed 11/198:30 amIDA - BWI

2 stops12h 11mUnited Airlines

Wed 11/266:15 amBWI - IDA

2 stops11h 01mUnited Airlines

Deal found 10/20

$669

One-way flights from Idaho Falls to Washington, D.C.
Search for one-way flight options from Idaho Falls to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 22, 2025.

Wed 1/76:58 pmIDA - BWI

1 stop21h 16mAlaska Airlines

Deal found 10/22

$204

Tue 11/186:05 amIDA - DCA

1 stop8h 48mAlaska Airlines

Deal found 10/20

$207

Tue 11/181:15 pmIDA - IAD

1 stop8h 43mDelta

Deal found 10/19

$208

Tue 11/186:57 pmIDA - DCA

2 stops12h 13mDelta

Deal found 10/20

$213

Wed 1/79:00 amIDA - IAD

2 stops30h 04mAlaska Airlines

Deal found 10/22

$219

Wed 1/72:07 pmIDA - BWI

1 stop7h 01mAmerican Airlines

Deal found 10/20

$230

Sat 11/86:05 amIDA - IAD

1 stop8h 35mAlaska Airlines

Deal found 10/19

$245

Sat 11/86:53 pmIDA - IAD

2 stops12h 17mDelta

Deal found 10/19

$271

Tue 12/305:00 amIDA - IAD

1 stop6h 16mUnited Airlines

Deal found 10/21

$273

Tue 12/305:00 amIDA - BWI

2 stops9h 58mUnited Airlines

Deal found 10/21

$283

Wed 1/72:07 pmIDA - IAD

1 stop29h 10mAmerican Airlines

Deal found 10/22

$318

Tue 12/306:57 pmIDA - DCA

2 stops12h 16mDelta

Deal found 10/21

$347

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 12/4

6:05 am-4:36 pm

1 stop8h 31m

Washington, D.C. Dulles Intl

Wed 12/10

7:34 am-11:59 pm

1 stop18h 25m

$354

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 1/13

6:58 pm-4:09 pm

1 stop19h 11m

Washington, D.C. Reagan-National

Fri 1/16

5:01 pm-6:18 pm

1 stop27h 17m

$363

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 3/6

8:00 am-5:55 am

1 stop19h 55m

Washington, D.C. Dulles Intl

Tue 3/10

7:00 am-10:38 pm

1 stop17h 38m

$389

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 3/10

6:45 pm-6:07 am

1 stop9h 22m

Baltimore/Washington

Wed 3/11

12:15 pm-10:21 pm

2 stops12h 06m

$402

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 1/13

2:40 pm-11:15 pm

1 stop6h 35m

Baltimore/Washington

Fri 1/16

4:10 pm-9:16 pm

1 stop7h 06m

$412

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 1/13

7:29 am-9:23 pm

2 stops11h 54m

Baltimore/Washington

Fri 1/16

6:17 am-1:37 pm

1 stop9h 20m

$417

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 1/13

7:29 am-9:17 pm

2 stops11h 48m

Washington, D.C. Dulles Intl

Fri 1/16

6:14 am-1:37 pm

1 stop9h 23m

$420

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 12/3

10:58 am-9:24 pm

1 stop8h 26m

Washington, D.C. Dulles Intl

Sat 1/3

5:20 pm-10:59 pm

1 stop7h 39m

$435

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 12/4

7:06 pm-9:11 am

2 stops12h 05m

Washington, D.C. Dulles Intl

Wed 12/10

7:05 am-10:21 pm

1 stop17h 16m

$442

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 3/10

8:00 am-9:55 pm

1 stop11h 55m

Washington, D.C. Reagan-National

Wed 3/11

8:00 am-10:38 pm

1 stop16h 38m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 38 results

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

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

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	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 Idaho Falls-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Idaho Falls-Washington, D.C. 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 Idaho Falls-Washington, D.C. 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 Idaho Falls to Washington, D.C.

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

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

Currently, March is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. (average of $219). Flying from Idaho Falls to Washington, D.C. in June is currently the most expensive (average of $542). 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.

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

One of the essential ways to save on airfare from Idaho Falls to Washington, D.C. is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 21% on airfare.

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with United Airlines from Idaho Falls to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,990 reviews

Reviews

1 / 20

4.0

Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

United Airlines

7.4

Good

8,990 reviews

United Airlines

7.4

Good

8,990 reviews

Reviews

1 / 20

4.0

Okay

Tim,Sep 2025

IAD - GSP

Related info for your journey

What airport do you fly from for flights from Idaho Falls to 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 Washington, D.C. from Idaho Falls. Booking flights from Fanning Field (IDA) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 2 different airlines.
How long is the flight from Idaho Falls to Washington, D.C.?
Alaska Airlines, Delta, and United Airlines can get you from Idaho Falls to Washington, D.C. in just under 6h 35m. Your travel time can differ by up to 2h 47m. The distance between Idaho Falls and Washington, D.C. is about 1845 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 Idaho Falls to Washington, D.C. round-trip?
United Airlines, at $394, was found to be the cheapest airline from Idaho Falls to Washington, D.C.. An alternate airline flying to your destination would be American Airlines.
What are the cheapest airlines to fly from Idaho Falls to Washington, D.C. one-way?
$204 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $208 and $208, respectively.
What are the most popular routes from Idaho Falls to Washington, D.C.?
When deciding which route to take from Idaho Falls to Washington, D.C. consider Idaho Falls Fanning Field - Washington, D.C. Reagan-National, Idaho Falls Fanning Field - Washington, D.C. Dulles Intl or Idaho Falls Fanning Field - Baltimore/Washington as they are the most popular.
Can I find deals for flights from Idaho Falls to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Idaho Falls to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho Falls to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Washington, D.C..
Can I find deals for business class flights from Idaho Falls to Washington, D.C.?
Yes. Cheapflights offers flight deals from Idaho Falls to Washington, D.C. 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 Idaho Falls to Washington, D.C.?
Currently, March is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. (average of $219). Flying from Idaho Falls to Washington, D.C. in June is currently the most expensive (average of $542). 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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Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Idaho Falls to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$394	Average$645	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$437	Average$607	FlexibilityNo cancel fee	On-time71%

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$204+ Cheap flights from Idaho Falls (IDA) to Washington, D.C. (WAS)

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Most accurate provider

Most trusted provider

Round-trip from

One-way from

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

Cheapest flights from Idaho Falls to Washington, D.C.Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Cheapflights Fare Finder

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

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

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 Idaho Falls to Washington, D.C. in October.

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

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

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Everything you need to know about your flight from Idaho Falls to Washington, D.C.

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

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

Find hourly flight availability from Idaho Falls to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with United Airlines from Idaho Falls to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Washington, D.C.. 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 from for flights from Idaho Falls to Washington, D.C.?

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

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

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

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

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

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

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

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

Traveling to a place near Washington, D.C.?

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

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Top 2 airlines flying from Idaho Falls to Washington, D.C.

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Cheapest flights from Idaho Falls to Washington, D.C.
Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.