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

Delta, United Airlines, and Alaska Airlines can get you from Idaho Falls to Washington, D.C. in just under 6h 12m. Your travel time can differ by up to 6h 21m. 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?

American Airlines, at $369, was found to be the cheapest airline from Idaho Falls to Washington, D.C.. An alternate airline flying to your destination would be United Airlines.

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

$197 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Alaska Airlines, with prices starting from $208 and $213, respectively.

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

Travelers seeking maximum savings on their Idaho Falls to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 - Baltimore/Washington, Idaho Falls Fanning Field - Washington, D.C. Dulles Intl or Idaho Falls Fanning Field - Washington, D.C. Reagan-National as they are the most popular.

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.

$169+ Flights from Idaho Falls to Washington, D.C.

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

Round-trip from	$271 (Kiwi.com)
One-way from	$169 (Kiwi.com)

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

Search Deals

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

Search Deals

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 September 17, 2025.

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Thu 10/306:21 pmBWI - IDA

1 stop23h 53mMultiple Airlines

Deal found 9/14

$271

Sun 10/2610:13 pmIDA - BWI

2 stops20h 44mMultiple Airlines

Thu 10/306:21 pmBWI - IDA

1 stop23h 53mMultiple Airlines

Deal found 9/14

$326

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Fri 10/315:35 amBWI - IDA

2 stops12h 39mMultiple Airlines

Deal found 9/14

$329

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Sat 11/13:05 pmBWI - IDA

2 stops32h 18mMultiple Airlines

Deal found 9/15

$373

Tue 11/43:50 pmIDA - IAD

1 stop12h 33mAlaska Airlines

Sat 11/87:43 amIAD - IDA

1 stop9h 30mAlaska Airlines

Deal found 9/15

$412

Sat 11/86:05 amIDA - DCA

1 stop8h 48mAlaska Airlines

Wed 11/198:00 amDCA - IDA

1 stop9h 13mAlaska Airlines

Deal found 9/16

$412

Tue 10/72:35 pmIDA - IAD

1 stop6h 47mUnited Airlines

Sat 10/112:45 pmIAD - IDA

1 stop8h 07mUnited Airlines

Deal found 9/15

$413

Mon 10/273:50 pmIDA - IAD

1 stop12h 33mAlaska Airlines

Fri 10/317:43 amIAD - IDA

1 stop9h 30mAlaska Airlines

Deal found 9/14

$414

Mon 10/271:11 pmIDA - DCA

1 stop7h 04mAmerican Airlines

Sat 11/16:59 amDCA - IDA

1 stop7h 25mAmerican Airlines

Deal found 9/15

$414

Mon 10/2712:55 pmIDA - IAD

1 stop7h 56mAmerican Airlines

Thu 10/306:11 amIAD - IDA

1 stop8h 30mAmerican Airlines

Deal found 9/15

$415

Mon 10/271:11 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Fri 10/316:59 amDCA - IDA

1 stop7h 26mAmerican Airlines

Deal found 9/14

$415

Sat 11/87:10 amIDA - IAD

2 stops13h 18mAmerican Airlines

Wed 11/196:04 amIAD - IDA

1 stop9h 24mAmerican Airlines

Deal found 9/16

$418

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 September 17, 2025.

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Thu 10/306:21 pmBWI - IDA

1 stop23h 53mMultiple Airlines

Deal found 9/14

$271

Sat 10/256:53 pmIDA - BWI

1 stop9h 07mDelta

Thu 10/307:15 amBWI - IDA

1 stop7h 18mDelta

Deal found 9/14

$407

Mon 10/272:45 pmIDA - BWI

1 stop6h 12mUnited Airlines

Sat 11/110:10 amBWI - IDA

1 stop9h 36mUnited Airlines

Deal found 9/15

$407

Sat 11/83:50 pmIDA - IAD

1 stop12h 33mAlaska Airlines

Wed 11/196:13 pmIAD - IDA

1 stop23h 00mAlaska Airlines

Deal found 9/16

$412

Fri 3/68:00 amIDA - IAD

1 stop7h 55mHawaiian Airlines

Tue 3/107:00 amIAD - IDA

1 stop10h 23mHawaiian Airlines

Deal found 9/14

$414

Mon 10/271:11 pmIDA - DCA

1 stop7h 04mAmerican Airlines

Sat 11/13:30 pmDCA - IDA

1 stop8h 18mAmerican Airlines

Deal found 9/15

$414

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Fri 10/315:35 amBWI - IDA

2 stops12h 39mMultiple Airlines

Deal found 9/14

$329

Sat 11/86:05 amIDA - DCA

1 stop8h 48mAlaska Airlines

Wed 11/198:00 amDCA - IDA

1 stop9h 13mAlaska Airlines

Deal found 9/16

$412

Sat 10/251:15 pmIDA - IAD

1 stop8h 18mDelta

Thu 10/306:15 amIAD - IDA

1 stop8h 18mDelta

Deal found 9/14

$414

Sat 10/2512:55 pmIDA - DCA

1 stop7h 20mAmerican Airlines

Fri 10/316:59 amDCA - IDA

1 stop7h 26mAmerican Airlines

Deal found 9/14

$414

Mon 10/272:45 pmIDA - IAD

1 stop6h 30mUnited Airlines

Sat 11/112:40 pmIAD - IDA

1 stop7h 06mUnited Airlines

Deal found 9/15

$451

Sat 10/256:00 amIDA - IAD

1 stop10h 28mAlaska Airlines

Fri 10/317:43 amIAD - IDA

1 stop9h 30mAlaska Airlines

Deal found 9/14

$413

Mon 10/2712:55 pmIDA - IAD

1 stop7h 56mAmerican Airlines

Thu 10/306:11 amIAD - IDA

1 stop8h 30mAmerican Airlines

Deal found 9/17

$415

Mon 10/276:53 pmIDA - BWI

1 stop9h 07mDelta

Thu 10/307:15 amBWI - IDA

1 stop7h 18mDelta

Deal found 9/17

$421

Sat 12/136:05 amIDA - DCA

1 stop8h 03mHawaiian Airlines

Thu 12/255:00 pmDCA - IDA

1 stop9h 07mHawaiian Airlines

Deal found 9/15

$474

Mon 10/273:50 pmIDA - IAD

1 stop12h 33mAlaska Airlines

Fri 10/317:43 amIAD - IDA

1 stop9h 30mAlaska Airlines

Deal found 9/15

$414

Sun 10/266:53 pmIDA - BWI

1 stop9h 07mDelta

Thu 10/307:15 amBWI - IDA

1 stop7h 18mDelta

Deal found 9/14

$424

Mon 10/271:11 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Thu 10/301:30 pmDCA - IDA

1 stop10h 19mAmerican Airlines

Deal found 9/17

$448

Sun 11/93:50 pmIDA - BWI

1 stop12h 28mAlaska Airlines

Mon 11/107:16 pmBWI - IDA

1 stop21h 57mAlaska Airlines

Deal found 9/15

$423

Tue 3/106:45 pmIDA - BWI

1 stop9h 22mDelta

Wed 3/1112:15 pmBWI - IDA

2 stops12h 06mDelta

Deal found 9/16

$429

Mon 10/271:11 pmIDA - IAD

2 stops8h 42mAmerican Airlines

Fri 10/316:11 amIAD - IDA

1 stop8h 30mAmerican Airlines

Deal found 9/15

$453

Sat 11/86:53 pmIDA - BWI

2 stops12h 29mDelta

Wed 11/197:15 amBWI - IDA

1 stop7h 24mDelta

Deal found 9/16

$431

Wed 10/84:15 pmIDA - IAD

1 stop30h 08mAlaska Airlines

Sat 10/116:25 amIAD - IDA

1 stop11h 13mAlaska Airlines

Deal found 9/17

$462

Wed 10/11:35 pmIDA - DCA

1 stop9h 25mAmerican Airlines

Sun 10/56:30 amDCA - IDA

1 stop7h 39mAmerican Airlines

Deal found 9/16

$481

Wed 10/154:15 pmIDA - IAD

1 stop30h 08mAlaska Airlines

Wed 10/226:25 amIAD - IDA

1 stop11h 13mAlaska Airlines

Deal found 9/17

$462

Sat 10/256:00 amIDA - DCA

1 stop8h 48mAlaska Airlines

Fri 10/315:00 pmDCA - IDA

1 stop8h 59mAlaska Airlines

Deal found 9/14

$475

Wed 12/35:04 pmIDA - DCA

1 stop26h 55mAlaska Airlines

Mon 12/85:00 pmDCA - IDA

1 stop25h 27mAlaska Airlines

Deal found 9/15

$503

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 September 17, 2025 and is based on user searches.

Tue 10/72:35 pmIDA - IAD

1 stop6h 47mUnited Airlines

Sat 10/112:45 pmIAD - IDA

1 stop8h 07mUnited Airlines

Deal found 9/15

$413

Tue 10/76:00 amIDA - IAD

1 stop16h 23mAlaska Airlines

Sat 10/116:25 amIAD - IDA

1 stop18h 13mAlaska Airlines

Deal found 9/16

$442

Sat 10/2512:55 pmIDA - IAD

2 stops8h 58mAmerican Airlines

Fri 10/316:11 amIAD - IDA

1 stop8h 30mAmerican Airlines

Deal found 9/14

$419

Sun 10/2610:13 pmIDA - BWI

2 stops20h 44mMultiple Airlines

Thu 10/306:21 pmBWI - IDA

1 stop23h 53mMultiple Airlines

Deal found 9/14

$326

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Thu 10/306:21 pmBWI - IDA

1 stop23h 53mMultiple Airlines

Deal found 9/14

$271

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Fri 10/315:35 amBWI - IDA

2 stops12h 39mMultiple Airlines

Deal found 9/14

$329

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Sat 11/13:05 pmBWI - IDA

2 stops32h 18mMultiple Airlines

Deal found 9/15

$373

Mon 10/273:50 pmIDA - IAD

1 stop12h 33mAlaska Airlines

Fri 10/317:43 amIAD - IDA

1 stop9h 30mAlaska Airlines

Deal found 9/14

$414

Mon 10/271:11 pmIDA - DCA

1 stop7h 04mAmerican Airlines

Sat 11/16:59 amDCA - IDA

1 stop7h 25mAmerican Airlines

Deal found 9/15

$414

Mon 10/2712:55 pmIDA - IAD

1 stop7h 56mAmerican Airlines

Thu 10/306:11 amIAD - IDA

1 stop8h 30mAmerican Airlines

Deal found 9/15

$415

Mon 10/271:11 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Fri 10/316:59 amDCA - IDA

1 stop7h 26mAmerican Airlines

Deal found 9/14

$415

Mon 10/271:11 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Thu 10/301:30 pmDCA - IDA

1 stop10h 19mAmerican Airlines

Deal found 9/17

$448

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 September 17, 2025.

Mon 10/207:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Deal found 9/17

$169

Wed 10/86:53 pmIDA - BWI

1 stop9h 07mDelta

Deal found 9/16

$197

Sun 11/3010:53 pmIDA - BWI

2 stops40h 10mMultiple Airlines

Deal found 9/15

$207

Mon 10/201:11 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Deal found 9/17

$208

Mon 10/204:15 pmIDA - IAD

1 stop13h 18mAlaska Airlines

Deal found 9/17

$213

Sat 11/226:57 pmIDA - BWI

1 stop9h 01mDelta

Deal found 9/16

$214

Mon 10/207:40 pmIDA - IAD

2 stops46h 06mMultiple Airlines

Deal found 9/17

$230

Thu 10/2312:55 pmIDA - IAD

1 stop7h 56mAmerican Airlines

Deal found 9/15

$241

Wed 12/316:00 amIDA - IAD

1 stop9h 43mAlaska Airlines

Deal found 9/16

$252

Wed 10/85:00 amIDA - BWI

2 stops10h 26mUnited Airlines

Deal found 9/16

$252

Wed 12/316:00 amIDA - DCA

1 stop8h 07mAlaska Airlines

Deal found 9/16

$252

Mon 9/2211:56 amIDA - DCA

2 stops46h 14mMultiple Airlines

Deal found 9/16

$264

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 FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Mon 10/27

7:40 pm-5:16 pm

1 stop19h 36m

Baltimore/Washington

Thu 10/30

6:21 pm-4:14 pm

1 stop23h 53m

$271

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Mon 10/27

7:40 pm-5:16 pm

1 stop19h 36m

Baltimore/Washington

Fri 10/31

5:35 am-4:14 pm

2 stops12h 39m

$329

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Sat 10/25

6:53 pm-6:00 am

1 stop9h 07m

Baltimore/Washington

Thu 10/30

7:15 am-12:33 pm

1 stop7h 18m

$407

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Mon 10/27

2:45 pm-10:57 pm

1 stop6h 12m

Baltimore/Washington

Sat 11/1

10:10 am-5:46 pm

1 stop9h 36m

$407

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 11/8

3:50 pm-6:23 am

1 stop12h 33m

Washington, D.C. Dulles Intl

Wed 11/19

6:13 pm-3:13 pm

1 stop23h 00m

$412

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 11/8

6:05 am-4:53 pm

1 stop8h 48m

Washington, D.C. Reagan-National

Wed 11/19

8:00 am-3:13 pm

1 stop9h 13m

$412

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 10/25

6:00 am-6:28 pm

1 stop10h 28m

Washington, D.C. Dulles Intl

Fri 10/31

7:43 am-3:13 pm

1 stop9h 30m

$413

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 3/6

8:00 am-5:55 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

Tue 3/10

7:00 am-3:23 pm

1 stop10h 23m

$414

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-10:15 pm

1 stop7h 04m

Washington, D.C. Reagan-National

Sat 11/1

3:30 pm-9:48 pm

1 stop8h 18m

$414

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 10/25

1:15 pm-11:33 pm

1 stop8h 18m

Washington, D.C. Dulles Intl

Thu 10/30

6:15 am-12:33 pm

1 stop8h 18m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 57 results

...

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, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. (average of $292). Flying from Idaho Falls to Washington, D.C. in April is currently the most expensive (average of $337). 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 afternoon tend to be the most expensive. A flight at noon could potentially save you up to 9% 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

8,926 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.?
Delta, United Airlines, and Alaska Airlines can get you from Idaho Falls to Washington, D.C. in just under 6h 12m. Your travel time can differ by up to 6h 21m. 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?
American Airlines, at $369, was found to be the cheapest airline from Idaho Falls to Washington, D.C.. An alternate airline flying to your destination would be United Airlines.
What are the cheapest airlines to fly from Idaho Falls to Washington, D.C. one-way?
$197 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Alaska Airlines, with prices starting from $208 and $213, 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 - Baltimore/Washington, Idaho Falls Fanning Field - Washington, D.C. Dulles Intl or Idaho Falls Fanning Field - Washington, D.C. Reagan-National 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, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. (average of $292). Flying from Idaho Falls to Washington, D.C. in April is currently the most expensive (average of $337). 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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Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

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Laurel

Towson

National Harbor

Dundalk

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
American Airlines	Cheapest$369	Average$560	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$394	Average$651	FlexibilityNo cancel fee	On-time69%

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$169+ 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 10/20. 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

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

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 September 17, 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 September 17, 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.

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.

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.?

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 September 17, 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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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 September 17, 2025.