$100+ Cheap flights from Idaho 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Idaho to Washington, D.C. with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to Washington, D.C.
Keep the following information in mind while searching for Idaho to Washington, D.C. flight deals. Data was last updated June 12, 2025.
Round-trip from | $199 (Delta) |
|---|---|
One-way from | $100 (Delta) |
Popular in | March |
Cheapest in | February |
Average price | $406 |
Find flight deals from Idaho to Washington, D.C.
Cheapest flights from Idaho to Washington, D.C.Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Idaho to Washington, D.C. that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SpokaneWashington, D.C.
GEG - IAD
GEGIAD
Spokane
Wed 7/9
7:26 pm-5:57 am
1 stop7h 31m
Washington, D.C. Dulles Intl
Tue 7/15
7:30 am-12:33 pm
1 stop8h 03m
SpokaneWashington, D.C.
GEG - DCA
GEGDCA
Spokane
Tue 9/2
1:08 pm-11:50 pm
1 stop7h 42m
Washington, D.C. Reagan-National
Tue 9/9
3:33 pm-10:52 pm
1 stop10h 19m
SpokaneWashington, D.C.
GEG - IAD
GEGIAD
Spokane
Sat 9/20
12:35 pm-10:49 pm
1 stop7h 14m
Washington, D.C. Dulles Intl
Sat 9/27
12:48 pm-10:52 pm
2 stops13h 04m
SpokaneBaltimore
GEG - BWI
GEGBWI
Spokane
Tue 9/2
5:46 pm-5:33 am
1 stop8h 47m
Baltimore/Washington
Tue 9/9
7:00 am-12:43 pm
1 stop8h 43m
SpokaneWashington, D.C.
GEG - IAD
GEGIAD
Spokane
Mon 8/11
4:47 pm-6:50 am
1 stop11h 03m
Washington, D.C. Dulles Intl
Wed 8/13
6:30 am-12:28 pm
1 stop8h 58m
SpokaneWashington, D.C.
GEG - DCA
GEGDCA
Spokane
Sat 9/20
5:05 am-3:35 pm
1 stop7h 30m
Washington, D.C. Reagan-National
Sat 9/27
4:40 pm-10:39 pm
2 stops8h 59m
SpokaneWashington, D.C.
GEG - IAD
GEGIAD
Spokane
Tue 7/8
6:25 pm-5:24 am
1 stop7h 59m
Washington, D.C. Dulles Intl
Tue 7/15
3:56 pm-9:03 pm
1 stop8h 07m
SpokaneWashington, D.C.
GEG - IAD
GEGIAD
Spokane
Wed 7/23
6:07 pm-7:27 am
1 stop10h 20m
Washington, D.C. Dulles Intl
Wed 7/30
5:25 pm-11:44 pm
1 stop9h 19m
SpokaneBaltimore
GEG - BWI
GEGBWI
Spokane
Tue 9/2
2:45 pm-5:10 am
1 stop11h 25m
Baltimore/Washington
Tue 9/9
8:05 am-10:05 pm
2 stops17h 00m
BoiseWashington, D.C.
BOI - IAD
BOIIAD
Boise Air Term. Gowen Fld
Wed 8/27
7:17 pm-7:32 am
1 stop10h 15m
Washington, D.C. Dulles Intl
Sun 8/31
9:00 am-5:18 pm
1 stop10h 18m
Best time to book a flight from Idaho to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Idaho with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Idaho to Washington, D.C.
What is the cheapest month to book a flight from Idaho to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Idaho to Washington, D.C. (average of $241). Flying from Idaho to Washington, D.C. in March is currently the most expensive (average of $290). 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 ID to WAS?
Find hourly flight availability from Idaho 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 June 12, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Washington, D.C. as you normally would.
Rainfall in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.
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.
Temperature in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.
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).
Reviews of airlines servicing Washington, D.C.
Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Idaho to Washington, D.C. 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.
Entertainment
Boarding
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Overall
Crew
Reviews
James,Apr 2025
LAX - SFO
Related info for your journey
Find useful and relevant information for your journey from Idaho 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.
Traveling to a place near Idaho?
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Alternative routes for Idaho to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Idaho to Washington, D.C.
Discover the top 5 airlines that operate flights from Idaho to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$453 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$300 | Average$564 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$300 | Average$633 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$300 | Average$446 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$346 | Average$497 | FlexibilityNo cancel fee | On-time63% |