Skip to main content
Beginning of main content

IAD (Washington) to BOI (Boise) Flights $375.1

Search over 321,000 hotels worldwide and 400 airlines worldwide.
Secure incredible value with Expedia's Price Guarantee.
No Expedia cancellation fee to change or cancel almost any hotel reservation.

Here are your best fares found in the past 7 days

The lowest fare found for this route is $375.1 on Wed, Sep 06 from IAD to BOI
Flights Fare Calendar Find minimum fare between origin IAD and destination BOI Click this button to get previous 30 days data Click this button to get next 30 days data $1289 $1104 $920 $736 $552 $368 $184 $0 Jun Jul 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F Price is $ 1104.9 on Alaska Airlines Price is $ 1077.1 on Alaska Airlines Price is $ 746.17 on Delta Price is $ 685.03 on Alaska Airlines Price is $ 671.1 on Alaska Airlines Price is $ 639.62 on Delta Price is $ 628.03 on Alaska Airlines Price is $ 595.1 on United Price is $ 594.2 on Delta Price is $ 590.1 on United Price is $ 589.1 on United Price is $ 588.1 on United Price is $ 581.1 on Alaska Airlines Price is $ 551.81 on Alaska Airlines Price is $ 544.1 on United Price is $ 540.31 on United Price is $ 534.7 on United Price is $ 521.1 on United Price is $ 505.7 on United Price is $ 498.69 on United Price is $ 495.7 on United Price is $ 492.25 on United Price is $ 490.79 on United Price is $ 485.7 on United Price is $ 481.1 on United Price is $ 477.7 on United Price is $ 471.13 on United Price is $ 468.1 on United Price is $ 461.1 on United Price is $ 461.1 on United Price is $ 451.1 on United Price is $ 436.71 on United Price is $ 423.1 on Delta Price is $ 423.1 on United Price is $ 413.7 on United Price is $ 406.47 on American Airlines Price is $ 403.1 on United Price is $ 403.1 on United Price is $ 403.1 on United Price is $ 403.1 on United Price is $ 403.1 on United Price is $ 403.1 on Delta Price is $ 403.1 on Delta Price is $ 375.1 on Delta Price is $ 375.1 on United Price is $ 375.1 on United

Cheap IAD to BOI Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Washington to Boise (IAD to BOI)

Question : How long do most people stay in Boise?
Answer : Of course you're not most people, but if you were, you'd stay roughly eight days.

Question : Which airline is giving the best deals for round-trip flights from Washington Dulles International Airport (IAD) to Boise Air Terminal (Gowen Field) (BOI)?
Answer : Delta Air Lines is your best bet for finding that coveted low fare. They're offering fares as low as $369, while prices for other flights are as high as $804.

Question : How often are flights late from Washington Dulles International Airport (IAD) to Boise Air Terminal (Gowen Field) (BOI)?
Answer : The Dulles to Boise route has been particularly poor at getting passengers to their destination on time and currently ranks among the worst in the world. When there is a delay, it averages 46 minutes.

Question : What's the likelihood of you being delayed on this route?
Answer : IAD to BOI currently scores 0 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delay minutes. With 0 stars, you should feel rather worried about getting to Boise on time.

Question : Is price more important than specific travel days for you?
Answer : The best day to fly on a budget this month is Monday. Flexibility is paramount when booking travel plans in order to keep travel costs down.

Question : What is the cheapest day to fly in the next four weeks?
Answer : As of Jun 19th, the cheapest day to fly from Dulles to Boise is Jul 3rd. Tickets are currently being sold for $369, which is 31% below the average price for this route.

Question : Do prices fluctuate more for this route than others?
Answer : Prices for this trip tend to fluctuate less than other flights in the United States. They can range from $369 to $804. Remember, the sooner you book, the better price you tend to get.