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Boise

$143+ Cheap flights from Dulles Intl (IAD) to Boise (BOI)

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Dulles Intl to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$284
(Hawaiian Airlines)

One-way from

$143
(Delta)

Popular in

December

Cheapest in

May

Average price

$487
From Washington, D.C. Dulles Intl to Boise Air Term. Gowen Fld
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One-way flight from Washington, D.C. Dulles Intl to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 18% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Dulles Intl to Boise

Cheapest flights from Dulles Intl to Boise
Explore the most affordable flight options available from Dulles Intl to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

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.
mar. 9/97:00 amIAD - BOI
1 stop10h 00mHawaiian Airlines
mar. 9/167:17 pmBOI - IAD
1 stop10h 15mHawaiian Airlines
Deal found 6/10$284
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/166:27 amIAD - BOI
1 stop8h 19mAmerican Airlines
mar. 8/197:00 amBOI - IAD
1 stop9h 56mAmerican Airlines
Deal found 6/11$285
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/255:47 pmIAD - BOI
1 stop6h 34mUnited Airlines
mar. 8/267:45 amBOI - IAD
1 stop9h 07mUnited Airlines
Deal found 6/11$286
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.
mié. 8/273:26 pmIAD - BOI
2 stops9h 34mDelta
dom. 8/316:00 amBOI - IAD
2 stops10h 49mDelta
Deal found 6/10$295
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/176:05 amIAD - BOI
1 stop12h 27mSun Country Air
dom. 7/207:38 pmBOI - IAD
1 stop14h 05mSun Country Air
Deal found 6/10$305
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.
mié. 7/98:10 amIAD - BOI
1 stop10h 54mAlaska Airlines
mié. 7/97:12 pmBOI - IAD
1 stop10h 15mAlaska Airlines
Deal found 6/10$313
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/1011:58 amIAD - BOI
2 stops32h 54mMultiple Airlines
jue. 7/175:31 pmBOI - IAD
1 stop16h 58mMultiple Airlines
Deal found 6/10$385
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/156:50 pmIAD - BOI
1 stop7h 15mSouthwest
vie. 9/195:45 amBOI - IAD
2 stops10h 30mSouthwest
Deal found 6/10$395

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Boise 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 junio 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boise that are best for you.

Fly from

Dulles Intl

Fly to

Boise

Route

Depart

Return

Price

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

mar. 9/9

7:00 am-3:00 pm

1 stop10h 00m

Boise Air Term. Gowen Fld

mar. 9/16

7:17 pm-7:32 am

1 stop10h 15m

$284

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

sáb. 8/16

6:27 am-12:46 pm

1 stop8h 19m

Boise Air Term. Gowen Fld

mar. 8/19

7:00 am-6:56 pm

1 stop9h 56m

$285

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

lun. 8/25

5:47 pm-10:21 pm

1 stop6h 34m

Boise Air Term. Gowen Fld

mar. 8/26

7:45 am-6:52 pm

1 stop9h 07m

$286

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

mié. 8/27

3:26 pm-11:00 pm

2 stops9h 34m

Boise Air Term. Gowen Fld

dom. 8/31

6:00 am-6:49 pm

2 stops10h 49m

$295

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

jue. 7/17

6:05 am-4:32 pm

1 stop12h 27m

Boise Air Term. Gowen Fld

dom. 7/20

7:38 pm-11:43 am

1 stop14h 05m

$305

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

mié. 7/9

8:10 am-5:04 pm

1 stop10h 54m

Boise Air Term. Gowen Fld

mié. 7/9

7:12 pm-7:27 am

1 stop10h 15m

$313

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

jue. 7/10

11:58 am-6:52 pm

2 stops32h 54m

Boise Air Term. Gowen Fld

jue. 7/17

5:31 pm-12:29 pm

1 stop16h 58m

$385

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

lun. 9/15

6:50 pm-12:05 am

1 stop7h 15m

Boise Air Term. Gowen Fld

vie. 9/19

5:45 am-6:15 pm

2 stops10h 30m

$395

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

mar. 8/5

7:30 am-3:40 pm

1 stop10h 10m

$143

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

jue. 7/17

6:05 am-4:32 pm

1 stop12h 27m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 16 results
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Best time to book a flight from Dulles Intl to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Boise

What is the cheapest time of day to fly from IAD to BOI?

Find hourly flight availability from Dulles Intl to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Boise at noon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the evening.

Rainfall in Boise by month

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

In terms of precipitation, rainfall in Boise 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 Boise when rainfall is around 0.2 in.

Temperature in Boise by month

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

If weather is an important factor for your trip to Boise, 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 Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated junio 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Washington, D.C. to Boise to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Boise. 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 into for flights to Boise from Washington, D.C. Dulles Intl?

    Most people fly into Boise Air Term. Gowen Fld (BOI) if they book a flight to Boise from Washington, D.C. Dulles Intl. On average, Air Term. Gowen Fld has 0 inbound flights from Washington, D.C. Dulles Intl per day from 5 airlines. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Boise round-trip?

    Flying on Hawaiian Airlines is currently your cheapest option to Boise, with prices starting at $284. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $285 and $286, respectively. Users have found that Hawaiian Airlines is 37% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Boise one-way?

    $143 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Sun Country Air and Alaska Airlines, with prices starting from $150 and $159, respectively.

  • Can I find deals for flights from Dulles Intl to Boise that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Boise.

  • Can I find deals for business class flights from Dulles Intl to Boise?

    Yes. Cheapflights offers flight deals from Dulles Intl to Boise 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 Washington, D.C. Dulles Intl Airport to Boise?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boise (average of $314). Flying from Washington, D.C. Dulles Intl Airport to Boise in June is currently the most expensive (average of $395). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Nampa
Meridian
Ontario
McCall
Caldwell

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Alternative routes for Dulles Intl to Boise

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Dulles Intl to Boise

Discover the top 5 airlines that operate flights from Dulles Intl to Boise. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$230Average$527FlexibilityNo cancel feeOn-time75%
DeltaCheapest$263Average$436FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$293Average$422FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$326Average$467FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$428Average$588FlexibilityNo cancel feeOn-time63%

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