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

To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at $138. Alaska Airlines flights start at $139 while deals on Frontier start at $147 one-way.

How far in advance should I book a flight from District of Columbia to Idaho?

To save up to 55% on this flight, we recommend booking at least 46 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from District of Columbia to Idaho from $398 1-2 weeks out and tickets from $398 for flights departing within the next 72 hours.

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

February is one of the best times of the year to fly to Idaho from District of Columbia. Prices for February average $490 per person but you can even find prices for as low as $184. The most expensive prices can be found in the month of December. Opting for a February flight can save you 45% on your journey compared to booking in December

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

Yes. In addition to deals on District of Columbia to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

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

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

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

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

$138+ Flights from District of Columbia to Idaho

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Cheap flight deals from District of Columbia to Idaho

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$259 (Trip.com)
One-way from	$138 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$558

Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.

Search Deals

From District of Columbia to Idaho

Search Deals

One-way flight from District of Columbia to Idaho

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($47 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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Find flight deals from District of Columbia to Idaho

Cheapest flights from District of Columbia to Idaho
Explore the most affordable flight options available from District of Columbia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

Wed 5/146:30 amIAD - GEG

1 stop9h 01mHawaiian Airlines

Wed 5/211:40 pmGEG - IAD

1 stop7h 19mHawaiian Airlines

Deal found 3/30

$259

Fri 4/257:00 amIAD - BOI

1 stop8h 31mAlaska Airlines

Mon 4/282:41 pmBOI - IAD

1 stop7h 42mAlaska Airlines

Deal found 3/30

$265

Mon 4/216:52 pmIAD - BOI

1 stop7h 11mDelta

Wed 4/303:30 pmBOI - IAD

1 stop6h 10mDelta

Deal found 3/30

$266

Wed 5/148:00 amDCA - GEG

1 stop7h 31mAlaska Airlines

Wed 5/217:10 amGEG - DCA

1 stop10h 49mAlaska Airlines

Deal found 3/30

$275

Wed 4/237:13 pmIAD - GEG

1 stop7h 46mAlaska Airlines

Sat 4/264:00 pmGEG - IAD

1 stop10h 40mAlaska Airlines

Deal found 3/31

$284

Sat 8/25:30 pmDCA - GEG

1 stop8h 27mAmerican Airlines

Thu 8/71:39 pmGEG - DCA

1 stop7h 11mAmerican Airlines

Deal found 3/31

$297

Mon 6/306:20 amIAD - GEG

1 stop7h 17mDelta

Thu 7/1011:55 amGEG - IAD

1 stop8h 34mDelta

Deal found 3/30

$297

Fri 4/256:30 amIAD - BOI

1 stop9h 17mHawaiian Airlines

Mon 4/282:41 pmBOI - IAD

1 stop7h 42mHawaiian Airlines

Deal found 3/31

$300

Mon 5/55:38 pmDCA - BOI

1 stop8h 12mHawaiian Airlines

Sat 5/109:18 amBOI - DCA

1 stop10h 41mHawaiian Airlines

Deal found 3/30

$300

Thu 9/189:05 amDCA - BOI

1 stop8h 45mSouthwest

Mon 9/221:10 pmBOI - DCA

1 stop8h 15mSouthwest

Deal found 3/31

$301

Tue 9/237:40 amDCA - GEG

1 stop8h 30mDelta

Tue 9/309:10 amGEG - DCA

2 stops10h 06mDelta

Deal found 3/30

$302

Wed 4/232:12 pmIAD - GEG

2 stops10h 26mAmerican Airlines

Sat 4/265:34 amGEG - IAD

1 stop7h 49mAmerican Airlines

Deal found 3/31

$302

Best flights from District of Columbia to Idaho
Discover carefully curated flight deals from District of Columbia to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 31, 2025.

Wed 5/146:30 amIAD - GEG

1 stop9h 01mHawaiian Airlines

Wed 5/211:40 pmGEG - IAD

1 stop7h 19mHawaiian Airlines

Deal found 3/30

$259

Fri 4/257:00 amIAD - BOI

1 stop8h 31mAlaska Airlines

Mon 4/282:41 pmBOI - IAD

1 stop7h 42mAlaska Airlines

Deal found 3/30

$265

Mon 4/216:52 pmIAD - BOI

1 stop7h 11mDelta

Wed 4/303:30 pmBOI - IAD

1 stop6h 10mDelta

Deal found 3/30

$266

Wed 4/232:12 pmIAD - GEG

2 stops10h 26mAmerican Airlines

Sat 4/265:34 amGEG - IAD

1 stop7h 49mAmerican Airlines

Deal found 3/31

$302

Tue 5/207:00 amDCA - BOI

1 stop8h 37mMultiple Airlines

Sat 5/247:45 amBOI - DCA

2 stops12h 14mMultiple Airlines

Deal found 3/30

$341

Thu 6/266:15 amIAD - BOI

1 stop11h 47mSun Country Air

Sun 6/296:20 pmBOI - IAD

1 stop15h 11mSun Country Air

Deal found 3/30

$345

Sun 4/278:30 amIAD - BOI

1 stop7h 02mUnited Airlines

Sun 5/42:00 pmBOI - IAD

1 stop9h 09mUnited Airlines

Deal found 3/30

$360

Wed 5/286:40 pmIAD - BOI

1 stop6h 50mSouthwest

Mon 6/26:35 amBOI - IAD

2 stops14h 05mSouthwest

Deal found 3/30

$395

Sun 6/157:00 amDCA - BOI

1 stop6h 47mFrontier

Sun 6/2212:36 pmBOI - DCA

1 stop7h 23mFrontier

Deal found 3/30

$549

Wed 5/148:00 amDCA - GEG

1 stop7h 31mAlaska Airlines

Wed 5/217:10 amGEG - DCA

1 stop10h 49mAlaska Airlines

Deal found 3/30

$275

Wed 4/236:55 pmDCA - GEG

1 stop8h 01mDelta

Sat 4/262:15 pmGEG - DCA

1 stop6h 43mDelta

Deal found 3/31

$297

Fri 4/256:30 amIAD - BOI

1 stop9h 17mHawaiian Airlines

Mon 4/282:41 pmBOI - IAD

1 stop7h 42mHawaiian Airlines

Deal found 3/31

$300

Last-minute flights from District of Columbia to Idaho
Discover last-minute flight deals from District of Columbia to Idaho. Data last updated March 31, 2025 and is based on user searches.

Tue 4/85:55 pmDCA - GEG

1 stop9h 04mAlaska Airlines

Fri 4/186:00 amGEG - DCA

1 stop7h 55mAlaska Airlines

Deal found 3/30

$614

Tue 4/87:31 amIAD - GEG

1 stop18h 31mAlaska Airlines

Fri 4/188:00 amGEG - IAD

1 stop6h 59mAlaska Airlines

Deal found 3/30

$614

Tue 4/85:00 amDCA - GEG

2 stops11h 38mAmerican Airlines

Fri 4/185:34 amGEG - DCA

1 stop7h 53mAmerican Airlines

Deal found 3/30

$620

Tue 4/83:30 pmDCA - GEG

2 stops10h 45mSouthwest

Fri 4/186:35 amGEG - DCA

2 stops11h 05mSouthwest

Deal found 3/30

$625

Tue 4/85:00 amIAD - GEG

2 stops11h 38mAmerican Airlines

Fri 4/186:27 amGEG - IAD

2 stops13h 18mAmerican Airlines

Deal found 3/30

$625

Wed 4/98:15 amIAD - GEG

1 stop9h 21mUnited Airlines

Fri 7/186:25 pmGEG - IAD

1 stop7h 59mUnited Airlines

Deal found 3/31

$489

Wed 4/96:00 amIAD - GEG

1 stop8h 51mDelta

Fri 7/185:40 pmGEG - IAD

2 stops13h 30mDelta

Deal found 3/31

$508

Wed 4/97:00 amIAD - BOI

1 stop8h 52mAlaska Airlines

Mon 4/215:27 pmBOI - IAD

1 stop21h 11mAlaska Airlines

Deal found 3/29

$564

Wed 4/96:30 amDCA - BOI

1 stop8h 03mAmerican Airlines

Mon 4/215:18 pmBOI - DCA

1 stop11h 42mAmerican Airlines

Deal found 3/29

$566

Wed 4/96:00 amIAD - BOI

2 stops10h 05mDelta

Mon 4/218:00 pmBOI - IAD

1 stop8h 20mDelta

Deal found 3/29

$586

Wed 4/98:00 amDCA - GEG

1 stop10h 00mHawaiian Airlines

Fri 7/189:45 amGEG - DCA

1 stop9h 14mHawaiian Airlines

Deal found 3/31

$596

Thu 4/107:00 amIAD - GEG

1 stop8h 34mHawaiian Airlines

Fri 7/188:48 pmGEG - IAD

1 stop7h 39mHawaiian Airlines

Deal found 3/31

$613

One-way flights from District of Columbia to Idaho
Search for one-way flight options from District of Columbia to Idaho. Find affordable one-way fares based on user searches. Data last updated March 31, 2025.

Sun 5/117:00 amIAD - GEG

1 stop9h 33mHawaiian Airlines

Deal found 3/30

$138

Sat 5/245:44 pmDCA - BOI

1 stop8h 15mAlaska Airlines

Deal found 3/30

$139

Thu 5/297:00 amDCA - BOI

1 stop6h 51mFrontier

Deal found 3/30

$147

Sun 5/117:00 amIAD - GEG

1 stop9h 33mAlaska Airlines

Deal found 3/31

$148

Fri 8/84:40 pmDCA - GEG

1 stop9h 02mDelta

Deal found 3/30

$149

Sun 5/45:15 amIAD - GEG

1 stop7h 20mSouthwest

Deal found 3/31

$149

Sun 5/259:00 amIAD - BOI

1 stop8h 06mHawaiian Airlines

Deal found 3/31

$150

Fri 5/95:35 pmIAD - BOI

1 stop9h 15mSouthwest

Deal found 3/31

$151

Thu 5/297:15 amIAD - BOI

1 stop11h 56mAlaska Airlines

Deal found 3/30

$156

Sun 5/256:00 amDCA - BOI

2 stops9h 46mDelta

Deal found 3/31

$156

Wed 4/305:00 amDCA - JAC

1 stop9h 13mAmerican Airlines

Deal found 3/31

$171

Fri 6/136:43 pmIAD - GEG

1 stop7h 37mAmerican Airlines

Deal found 3/30

$180

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Wed 5/14

6:30 am-12:31 pm

1 stop9h 01m

Spokane

Wed 5/21

1:40 pm-11:59 pm

1 stop7h 19m

$259

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Fri 4/25

7:00 am-1:31 pm

1 stop8h 31m

Boise Air Term. Gowen Fld

Mon 4/28

2:41 pm-12:23 am

1 stop7h 42m

$265

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Mon 4/21

6:52 pm-12:03 am

1 stop7h 11m

Boise Air Term. Gowen Fld

Wed 4/30

3:30 pm-11:40 pm

1 stop6h 10m

$266

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 5/14

8:00 am-12:31 pm

1 stop7h 31m

Spokane

Wed 5/21

7:10 am-8:59 pm

1 stop10h 49m

$275

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Wed 4/23

7:13 pm-11:59 pm

1 stop7h 46m

Spokane

Sat 4/26

4:00 pm-5:40 am

1 stop10h 40m

$284

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 4/23

6:55 pm-11:56 pm

1 stop8h 01m

Spokane

Sat 4/26

2:15 pm-11:58 pm

1 stop6h 43m

$297

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Mon 6/30

6:20 am-10:37 am

1 stop7h 17m

Spokane

Thu 7/10

11:55 am-11:29 pm

1 stop8h 34m

$297

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Fri 4/25

6:30 am-1:47 pm

1 stop9h 17m

Boise Air Term. Gowen Fld

Mon 4/28

2:41 pm-12:23 am

1 stop7h 42m

$300

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Mon 5/5

5:38 pm-11:50 pm

1 stop8h 12m

Boise Air Term. Gowen Fld

Sat 5/10

9:18 am-9:59 pm

1 stop10h 41m

$300

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 9/18

4:40 pm-11:59 pm

1 stop9h 19m

Boise Air Term. Gowen Fld

Sat 9/27

1:43 pm-10:16 pm

1 stop6h 33m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 60 results

...

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

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

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

Currently, October is the cheapest month in which you can book a flight from District of Columbia to Idaho (average of $314). Flying from District of Columbia to Idaho in June is currently the most expensive (average of $419). 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 DC to ID?

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

Rainfall in Idaho by month

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from District of Columbia to Idaho to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,818 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

9,818 reviews

Alaska Airlines

8.0

Very good

9,818 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

Southwest

8.0

Very good

4,275 reviews

Alaska Airlines

8.0

Very good

9,818 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

7,899 reviews

Alaska Airlines

8.0

Very good

9,818 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

2,344 reviews

Alaska Airlines

8.0

Very good

9,818 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

8,614 reviews

Alaska Airlines

8.0

Very good

9,818 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 are the cheapest airlines to fly from District of Columbia to Idaho one-way?
To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at $138. Alaska Airlines flights start at $139 while deals on Frontier start at $147 one-way.
Can I find deals for flights from District of Columbia to Idaho that include hotel bookings?
Yes. In addition to deals on District of Columbia to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Idaho.
Can I find deals for business class flights from District of Columbia to Idaho?
Yes. Cheapflights offers flight deals from District of Columbia to Idaho 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 District of Columbia to Idaho?
Currently, October is the cheapest month in which you can book a flight from District of Columbia to Idaho (average of $314). Flying from District of Columbia to Idaho in June is currently the most expensive (average of $419). 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

Top 6 airlines flying from District of Columbia to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$180	Average$295	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$230	Average$578	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$230	Average$498	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$274	Average$562	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$298	Average$689	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$334	Average$649	FlexibilityNo cancel fee	On-time71%

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$138+ Cheap flights from District of Columbia to Idaho

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from District of Columbia to Idaho with Cheapflights

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3. Compare prices and book

Cheap flight deals from District of Columbia to Idaho

Keep the following information in mind while searching for District of Columbia to Idaho flight deals. Data was last updated March 31, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from District of Columbia to Idaho

Cheapest flights from District of Columbia to IdahoExplore the most affordable flight options available from District of Columbia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

Explore the most affordable flight options available from District of Columbia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

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

Find hourly flight availability from District of Columbia to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

Rainfall in Idaho by month

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

Temperature in Idaho by month

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

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated March 31, 2025.

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from District of Columbia to Idaho to help guide your decision. You can also see how each airline compares 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 District of Columbia to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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 District of Columbia to Idaho

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

Top 6 airlines flying from District of Columbia to Idaho

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Cheapest flights from District of Columbia to Idaho
Explore the most affordable flight options available from District of Columbia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.