What are the cheapest airlines to fly from Idaho Falls to District of Columbia one-way?

The cheapest airlines for a one-way flight from Idaho Falls to District of Columbia are Alaska Airlines ($255), United Airlines ($256), and American Airlines ($256).

What is the cheapest month to fly from Idaho Falls to District of Columbia?

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, October can be a great choice for travel to District of Columbia. Flights to District of Columbia from Idaho Falls in October are about $687 on average during October, but can be found for as low as $550.

What airport do you fly from for flights from Idaho Falls to District of Columbia?

For a flight from Idaho Falls to District of Columbia, you will be flying from Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city.

How can I find direct flights from Idaho Falls to District of Columbia?

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

Can I find deals for business class flights from Idaho Falls to District of Columbia?

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

$255+ Save on Flights from Idaho Falls to District of Columbia

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Cheap flight deals from Idaho Falls to District of Columbia

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$395 (United Airlines)
One-way from	$255 (Alaska Airlines)
Popular in	March
Cheapest in	October
Average price	$853

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 District of Columbia

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One-way flight from Idaho Falls Fanning Field to District of Columbia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($102 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Find flight deals from Idaho Falls to District of Columbia

Cheapest flights from Idaho Falls to District of Columbia
Explore the most affordable flight options available from Idaho Falls to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Fri 5/210:53 amIDA - IAD

1 stop8h 32mUnited Airlines

Sun 5/45:35 pmIAD - IDA

1 stop7h 10mUnited Airlines

Deal found 3/24

$395

Thu 4/246:00 amIDA - IAD

1 stop16h 23mAlaska Airlines

Mon 4/287:13 pmIAD - IDA

1 stop22h 45mAlaska Airlines

Deal found 3/24

$454

Fri 5/25:00 amIDA - DCA

1 stop8h 02mUnited Airlines

Sun 5/44:16 pmDCA - IDA

1 stop8h 29mUnited Airlines

Deal found 3/24

$461

Tue 5/1312:30 pmIDA - IAD

1 stop8h 58mDelta

Sat 5/177:30 amIAD - IDA

1 stop6h 41mDelta

Deal found 3/24

$480

Fri 5/27:43 amIDA - DCA

2 stops12h 20mAmerican Airlines

Sun 5/45:00 amDCA - IDA

1 stop9h 29mAmerican Airlines

Deal found 3/24

$492

Fri 5/306:00 amIDA - DCA

1 stop13h 59mAlaska Airlines

Sun 6/18:00 amDCA - IDA

1 stop9h 40mAlaska Airlines

Deal found 3/24

$610

Mon 5/126:00 amIDA - IAD

1 stop10h 13mHawaiian Airlines

Fri 5/166:30 amIAD - IDA

1 stop11h 10mHawaiian Airlines

Deal found 3/23

$699

Sat 5/316:00 amIDA - DCA

1 stop8h 44mHawaiian Airlines

Thu 6/58:00 amDCA - IDA

1 stop9h 40mHawaiian Airlines

Deal found 3/24

$699

Thu 5/296:00 amIDA - DCA

2 stops10h 59mDelta

Sun 6/19:40 amDCA - IDA

2 stops10h 30mDelta

Deal found 3/24

$748

Best flights from Idaho Falls to District of Columbia
Discover carefully curated flight deals from Idaho Falls to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Fri 5/210:53 amIDA - IAD

1 stop8h 32mUnited Airlines

Sun 5/45:35 pmIAD - IDA

1 stop7h 10mUnited Airlines

Deal found 3/24

$395

Thu 4/246:00 amIDA - IAD

1 stop16h 23mAlaska Airlines

Mon 4/287:13 pmIAD - IDA

1 stop22h 45mAlaska Airlines

Deal found 3/24

$454

Tue 5/1312:30 pmIDA - IAD

1 stop8h 58mDelta

Sat 5/177:30 amIAD - IDA

1 stop6h 41mDelta

Deal found 3/24

$480

Fri 5/27:43 amIDA - DCA

2 stops12h 20mAmerican Airlines

Sun 5/45:00 amDCA - IDA

1 stop9h 29mAmerican Airlines

Deal found 3/24

$492

Mon 5/126:00 amIDA - IAD

1 stop10h 13mHawaiian Airlines

Fri 5/166:30 amIAD - IDA

1 stop11h 10mHawaiian Airlines

Deal found 3/23

$699

Fri 5/25:00 amIDA - DCA

1 stop8h 02mUnited Airlines

Sun 5/44:16 pmDCA - IDA

1 stop8h 29mUnited Airlines

Deal found 3/24

$461

Fri 5/306:00 amIDA - DCA

1 stop13h 59mAlaska Airlines

Sun 6/18:00 amDCA - IDA

1 stop9h 40mAlaska Airlines

Deal found 3/24

$610

Sat 5/316:00 amIDA - DCA

1 stop8h 44mHawaiian Airlines

Thu 6/58:00 amDCA - IDA

1 stop9h 40mHawaiian Airlines

Deal found 3/24

$699

Thu 5/296:00 amIDA - DCA

2 stops10h 59mDelta

Sun 6/19:40 amDCA - IDA

2 stops10h 30mDelta

Deal found 3/24

$748

Last-minute flights from Idaho Falls to District of Columbia
Discover last-minute flight deals from Idaho Falls to District of Columbia. Data last updated March 25, 2025 and is based on user searches.

Mon 4/710:50 amIDA - IAD

1 stop8h 34mUnited Airlines

Thu 4/1010:20 pmIAD - IDA

1 stop24h 47mUnited Airlines

Deal found 3/24

$640

Mon 4/712:59 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Fri 4/1111:54 amDCA - IDA

2 stops12h 16mAmerican Airlines

Deal found 3/24

$686

Mon 4/74:15 pmIDA - DCA

1 stop20h 46mUnited Airlines

Fri 4/114:15 pmDCA - IDA

1 stop19h 17mUnited Airlines

Deal found 3/24

$849

Thu 4/246:00 amIDA - IAD

1 stop16h 23mAlaska Airlines

Mon 4/287:13 pmIAD - IDA

1 stop22h 45mAlaska Airlines

Deal found 3/24

$454

One-way flights from Idaho Falls to District of Columbia
Search for one-way flight options from Idaho Falls to District of Columbia. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Tue 4/88:00 amIDA - IAD

1 stop7h 59mAlaska Airlines

Deal found 3/24

$255

Mon 4/710:50 amIDA - IAD

1 stop8h 34mUnited Airlines

Deal found 3/24

$256

Mon 4/712:59 pmIDA - DCA

1 stop8h 01mAmerican Airlines

Deal found 3/24

$256

Mon 4/76:55 pmIDA - IAD

2 stops12h 26mDelta

Deal found 3/24

$261

Mon 4/76:55 pmIDA - DCA

2 stops13h 39mDelta

Deal found 3/24

$261

Tue 4/86:50 amIDA - DCA

1 stop6h 11mUnited Airlines

Deal found 3/24

$301

Wed 4/97:43 amIDA - IAD

2 stops9h 58mAmerican Airlines

Deal found 3/24

$306

Sat 5/316:00 amIDA - DCA

2 stops12h 59mAlaska Airlines

Deal found 3/24

$307

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho Falls to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 5/2

10:53 am-9:25 pm

1 stop8h 32m

Washington, D.C. Dulles Intl

Sun 5/4

5:35 pm-10:45 pm

1 stop7h 10m

$395

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 4/24

6:00 am-12:23 am

1 stop16h 23m

Washington, D.C. Dulles Intl

Mon 4/28

7:13 pm-3:58 pm

1 stop22h 45m

$454

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 5/2

5:00 am-3:02 pm

1 stop8h 02m

Washington, D.C. Reagan-National

Sun 5/4

4:16 pm-10:45 pm

1 stop8h 29m

$461

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 5/13

12:30 pm-11:28 pm

1 stop8h 58m

Washington, D.C. Dulles Intl

Sat 5/17

7:30 am-12:11 pm

1 stop6h 41m

$480

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 5/2

7:43 am-10:03 pm

2 stops12h 20m

Washington, D.C. Reagan-National

Sun 5/4

5:00 am-12:29 pm

1 stop9h 29m

$492

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 5/30

6:00 am-9:59 pm

1 stop13h 59m

Washington, D.C. Reagan-National

Sun 6/1

8:00 am-3:40 pm

1 stop9h 40m

$610

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 5/12

6:00 am-6:13 pm

1 stop10h 13m

Washington, D.C. Dulles Intl

Fri 5/16

6:30 am-3:40 pm

1 stop11h 10m

$699

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 5/31

6:00 am-4:44 pm

1 stop8h 44m

Washington, D.C. Reagan-National

Thu 6/5

8:00 am-3:40 pm

1 stop9h 40m

$699

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 5/29

6:00 am-6:59 pm

2 stops10h 59m

Washington, D.C. Reagan-National

Sun 6/1

9:40 am-6:10 pm

2 stops10h 30m

$748

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 4/8

8:00 am-5:59 pm

1 stop7h 59m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 17 results

Best time to book a flight from Idaho Falls to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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 District of Columbia

What is the cheapest month to book a flight from Idaho Falls to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Idaho Falls to District of Columbia (average of $309). Flying from Idaho Falls to District of Columbia in June is currently the most expensive (average of $387). 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 DC?

When flying from Idaho Falls to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in District of Columbia by month

In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

If weather is an important factor for your trip to District of Columbia, 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).

Reviews of airlines servicing District of Columbia

See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Idaho Falls to District of Columbia have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,782 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,890 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,330 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,605 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What airport do you fly from for flights from Idaho Falls to District of Columbia?
For a flight from Idaho Falls to District of Columbia, you will be flying from Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city.
What are the cheapest airlines to fly from Idaho Falls to District of Columbia one-way?
The cheapest airlines for a one-way flight from Idaho Falls to District of Columbia are Alaska Airlines ($255), United Airlines ($256), and American Airlines ($256).
Can I find deals for flights from Idaho Falls to District of Columbia that include hotel bookings?
Yes. In addition to deals on Idaho Falls to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho Falls to District of Columbia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to District of Columbia.
Can I find deals for business class flights from Idaho Falls to District of Columbia?
Yes. Cheapflights offers flight deals from Idaho Falls to District of Columbia 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 District of Columbia?
Currently, August is the cheapest month in which you can book a flight from Idaho Falls to District of Columbia (average of $309). Flying from Idaho Falls to District of Columbia in June is currently the most expensive (average of $387). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Idaho Falls to District of Columbia

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$338	Average$509	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$369	Average$733	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$394	Average$765	FlexibilityNo cancel fee	On-time69%

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$255+ Cheap flights from Idaho Falls (IDA) to District of Columbia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho Falls to District of Columbia with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho Falls to District of Columbia

Keep the following information in mind while searching for Idaho Falls to District of Columbia flight deals. Data was last updated March 25, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho Falls to District of Columbia

Cheapest flights from Idaho Falls to District of ColumbiaExplore the most affordable flight options available from Idaho Falls to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Idaho Falls to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho Falls to District of Columbia that are best for you.

Best time to book a flight from Idaho Falls to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Idaho Falls with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to District of Columbia

What is the cheapest month to book a flight from Idaho Falls to District of Columbia?

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

Find hourly flight availability from Idaho Falls to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

Reviews of airlines servicing District of Columbia

See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Idaho Falls to District of Columbia have to say. Reviews also offer insight into each airline's 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 District of Columbia. 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 District of Columbia?

What are the cheapest airlines to fly from Idaho Falls to District of Columbia one-way?

Can I find deals for flights from Idaho Falls to District of Columbia that include hotel bookings?

How can I find direct flights from Idaho Falls to District of Columbia?

Can I find deals for business class flights from Idaho Falls to District of Columbia?

What is the cheapest month to book a flight from Idaho Falls to District of Columbia?

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 Idaho Falls to District of Columbia

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

Top 3 airlines flying from Idaho Falls to District of Columbia

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Cheapest flights from Idaho Falls to District of Columbia
Explore the most affordable flight options available from Idaho Falls to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.