IAD - BOI

$101 Find Cheap Flights from Washington Dulles Airport to Boise - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Boise departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$152
Typical prices: $308-$631
Frontier
Thu 9/10Mon 9/14
IAD - BOI • 1 stop
Cheapest one-way
$101
Typical prices: $169-$495
American Airlines
Tue 9/29
IAD - BOI • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Boise. You'll need at least 1 connection.
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Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $205 (round-trip)
Denver (DEN)
Shortest trip • 7h 03m (one-way)
Insights
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When to travel
December
Cheapest • 30% price drop
May
Most popular
Good to know
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Good to know
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We hope you love your trip to Boise!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Boise (IAD-BOI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Boise that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Boise

Thu, Sep 10 - Mon, Sep 14
Frontier Logo
6:00 am - 1:55 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 55m1 stop Las Vegas Harry Reid Intl
Frontier Logo
2:50 pm - 6:20 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 30m1 stop Las Vegas Harry Reid Intl
$152Frontier
Thu, Sep 10 - Fri, Sep 18
Frontier Logo
6:00 am - 1:55 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 55m1 stop Las Vegas Harry Reid Intl
Frontier Logo
2:50 pm - 6:20 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 30m1 stop Las Vegas Harry Reid Intl
$153Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
6:00 am - 1:55 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 55m1 stop Las Vegas Harry Reid Intl
Frontier Logo
2:50 pm - 6:20 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 30m1 stop Las Vegas Harry Reid Intl
$154Frontier
Wed, Sep 16 - Mon, Sep 21
Delta Logo
7:25 am - 3:16 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 51m1 stop Seattle/Tacoma Intl
Delta Logo
11:10 pm - 9:09 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 59m1 stop Atlanta Hartsfield-Jackson
$201Delta
Thu, Sep 10 - Mon, Sep 14
Delta Logo
7:25 am - 3:16 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 51m1 stop Seattle/Tacoma Intl
Delta Logo
11:10 pm - 9:09 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 59m1 stop Atlanta Hartsfield-Jackson
$201Delta
Wed, Oct 28 - Sat, Oct 31
Delta Logo
7:05 am - 3:20 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 15m1 stop Seattle/Tacoma Intl
Delta Logo
5:30 am - 1:48 pmBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 18m1 stop Minneapolis St Paul
$201Delta
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
6:00 am - 1:55 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 55m1 stop Las Vegas Harry Reid Intl
Frontier Logo
2:50 pm - 6:20 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 30m1 stop Las Vegas Harry Reid Intl
$204Frontier
Fri, Aug 28 - Tue, Sep 1
United Airlines Logo
8:35 am - 3:31 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 56m1 stop San Francisco
United Airlines Logo
2:44 pm - 11:19 pmBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 35m1 stop Denver Intl
$300United Airlines
Sat, Aug 29 - Mon, Aug 31
United Airlines Logo
12:50 pm - 5:58 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 08m1 stop Denver Intl
United Airlines Logo
12:24 pm - 9:20 pmBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 56m1 stop Chicago O'Hare Intl
$300United Airlines
Tue, Sep 29 - Tue, Oct 6
United Airlines Logo
5:27 pm - 10:33 pmIAD  Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 06m1 stop Denver Intl
United Airlines Logo
6:50 pm - 5:46 amBOI  Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
8h 56m1 stop San Francisco
$303United Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Boise flights

Get data-powered insights and trends into flights from Dulles Intl to Boise to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Boise?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Boise departing in September.

Flight prices are below average for this route right now.

Flights to Boise from Washington, D.C. Dulles Intl Airport usually cost between $312 and $558 in September.
The lowest price found in the past 5 days was $152 on Frontier (Sep 10-Sep 14).

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Boise?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Boise, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Boise is December, where tickets cost $355 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $817 and $684 respectively.

Find deals

Good to know

Low season

November

Cheapest flight

$101
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Washington Dulles Airport to Boise

When to book flights from Dulles Intl to Boise

Are your dates flexible? Find out the best times to travel from Dulles Intl to Boise based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Boise flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Boise?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Boise was $101 for a one-way ticket and $152 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Boise?

    No, a passport isn't needed to fly from Washington Dulles Airport to Boise. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Boise?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Boise?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Boise, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Boise, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Boise are Southwest and Delta. With an average price for the route of $537 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $330 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Boise?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Boise.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Boise?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Boise?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boise with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BOI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Boise?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boise from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Dulles Intl to Boise

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Boise (BOI)