$152+ Cheap flights from Boise (BOI) to Dulles Intl (IAD)
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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Oct 2 — Oct 91
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Dulles Intl with Cheapflights
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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
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Cheapest flights from Boise to Dulles IntlExplore the most affordable flight options available from Boise to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
Explore the most affordable flight options available from Boise to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
This Delta deal was found by Cheapflights users on 8/28. 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.
Tue 9/221:06 pm -
1 stop8h 37m
Tue 9/297:25 am -
1 stop9h 51m
Deal found 8/28![Delta logo]()
$303
This Expedia deal was found by Cheapflights users on 9/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop13h 30m
Mon 9/147:47 pm -
1 stop20h 15m
Deal found 9/1![Multiple Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 9/2. 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.
Mon 10/2612:08 pm -
1 stop8h 41m
Sun 11/16:00 am -
1 stop9h 34m
Deal found 9/2![Delta logo]()
$327
This Delta deal was found by Cheapflights users on 8/28. 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.
Sat 9/125:30 am -
1 stop6h 01m
Wed 9/168:08 am -
1 stop6h 53m
Deal found 8/28![Delta logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 9/262:16 pm -
1 stop7h 43m
Mon 9/287:47 pm -
1 stop20h 15m
Deal found 9/2![Alaska Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 8/29. 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.
Tue 12/13:00 pm -
1 stop6h 36m
Wed 12/27:06 pm -
1 stop7h 04m
Deal found 8/29![Delta logo]()
$361
This Expedia deal was found by Cheapflights users on 8/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:50 pm -
1 stop13h 30m
Mon 10/267:24 pm -
1 stop20h 23m
Deal found 8/28![Multiple Airlines logo]()
$365
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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.
Thu 10/226:04 pm -
1 stop9h 36m
Mon 10/267:24 pm -
1 stop20h 23m
Deal found 8/30![Alaska Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 8/29. 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.
Fri 10/24:20 pm -
1 stop11h 20m
Sun 10/47:24 pm -
1 stop20h 23m
Deal found 8/29![Alaska Airlines logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 9/117:20 am -
1 stop8h 54m
Tue 9/159:03 am -
1 stop8h 21m
Deal found 9/1![Alaska Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 8/29. 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.
Fri 9/251:06 pm -
1 stop8h 37m
Sun 9/276:47 pm -
1 stop7h 12m
Deal found 8/29![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 8/28. 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.
Tue 9/227:48 pm -
1 stop7h 52m
Tue 9/297:00 am -
2 stops15h 20m
Deal found 8/28![Alaska Airlines logo]()
$392
Best flights from Boise to Dulles IntlDiscover carefully curated flight deals from Boise to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
Discover carefully curated flight deals from Boise to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
This Delta deal was found by Cheapflights users on 8/28. 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.
Sat 9/192:11 pm -
1 stop8h 30m
Tue 9/226:47 pm -
1 stop7h 12m
Deal found 8/28![Delta logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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.
Thu 10/226:04 pm -
1 stop9h 36m
Mon 10/267:24 pm -
1 stop20h 23m
Deal found 8/30![Alaska Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 9/1. 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.
Tue 9/2910:34 am -
1 stop10h 22m
Tue 10/66:13 am -
1 stop6h 29m
Deal found 9/1![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 8/30. 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.
Mon 10/2612:08 pm -
1 stop8h 41m
Sun 11/16:00 am -
1 stop9h 34m
Deal found 8/30![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 8/29. 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.
Fri 10/24:20 pm -
1 stop11h 20m
Sun 10/47:24 pm -
1 stop20h 23m
Deal found 8/29![Alaska Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 8/29. 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.
Fri 9/251:06 pm -
1 stop8h 37m
Tue 9/296:10 am -
1 stop9h 34m
Deal found 8/29![Delta logo]()
$327
This Delta deal was found by Cheapflights users on 8/31. 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.
Sat 9/125:30 am -
1 stop6h 01m
Sat 9/197:25 am -
1 stop9h 51m
Deal found 8/31![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 8/28. 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.
Wed 9/1610:34 am -
1 stop10h 22m
Tue 9/296:47 pm -
1 stop7h 12m
Deal found 8/28![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 8/31. 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.
Sat 9/122:11 pm -
1 stop8h 30m
Sun 9/206:47 pm -
1 stop7h 12m
Deal found 8/31![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 8/29. 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.
Fri 10/2310:34 am -
1 stop10h 15m
Sun 11/16:00 am -
1 stop9h 34m
Deal found 8/29![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 8/29. 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.
Tue 12/13:00 pm -
1 stop6h 36m
Wed 12/27:06 pm -
1 stop7h 04m
Deal found 8/29![Delta logo]()
$361
Last-minute flights from Boise to Dulles IntlDiscover last-minute flight deals from Boise to Dulles Intl. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Dulles Intl. Data last updated September 2, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop13h 30m
Mon 9/147:47 pm -
1 stop20h 15m
Deal found 9/1![Multiple Airlines logo]()
$315
This Alaska Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 9/117:20 am -
1 stop8h 54m
Tue 9/159:03 am -
1 stop8h 21m
Deal found 9/1![Alaska Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 8/28. 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.
Sat 9/125:30 am -
1 stop6h 01m
Wed 9/168:08 am -
1 stop6h 53m
Deal found 8/28![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 8/28. 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.
Tue 9/221:06 pm -
1 stop8h 37m
Tue 9/297:25 am -
1 stop9h 51m
Deal found 8/28![Delta logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 8/28. 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.
Tue 9/227:48 pm -
1 stop7h 52m
Tue 9/297:00 am -
2 stops15h 20m
Deal found 8/28![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 8/29. 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.
Fri 9/251:06 pm -
1 stop8h 37m
Sun 9/276:47 pm -
1 stop7h 12m
Deal found 8/29![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 9/262:16 pm -
1 stop7h 43m
Mon 9/287:47 pm -
1 stop20h 15m
Deal found 9/2![Alaska Airlines logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 8/29. 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.
Fri 10/24:20 pm -
1 stop11h 20m
Sun 10/47:24 pm -
1 stop20h 23m
Deal found 8/29![Alaska Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 8/30. 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.
Mon 10/511:10 pm -
1 stop8h 09m
Mon 10/126:13 am -
1 stop6h 29m
Deal found 8/30![Delta logo]()
$361
This Expedia deal was found by Cheapflights users on 8/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:50 pm -
1 stop13h 30m
Mon 10/267:24 pm -
1 stop20h 23m
Deal found 8/28![Multiple Airlines logo]()
$365
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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.
Thu 10/226:04 pm -
1 stop9h 36m
Mon 10/267:24 pm -
1 stop20h 23m
Deal found 8/30![Alaska Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 9/2. 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.
Mon 10/2612:08 pm -
1 stop8h 41m
Sun 11/16:00 am -
1 stop9h 34m
Deal found 9/2![Delta logo]()
$327
One-way flights from Boise to Dulles IntlSearch for one-way flight options from Boise to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
Search for one-way flight options from Boise to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
This Delta deal was found by Cheapflights users on 8/28. 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.
Thu 10/112:17 pm -
1 stop8h 39m
Deal found 8/28![Delta logo]()
$152
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Thu 10/112:26 pm -
1 stop8h 26m
Deal found 8/28![United Airlines logo]()
$165
This American Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 12/222:00 pm -
1 stop6h 49m
Deal found 8/30![American Airlines logo]()
$177
This Booking.com deal was found by Cheapflights users on 8/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:37 pm -
1 stop20h 13m
Deal found 8/30![Alaska Airlines logo]()
$181
This Delta deal was found by Cheapflights users on 8/30. 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.
Mon 9/142:11 pm -
1 stop8h 30m
Deal found 8/30![Delta logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:49 pm -
2 stops25h 57m
Deal found 8/28![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 8/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
2 stops48h 28m
Deal found 8/31![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:50 pm -
2 stops31h 31m
Deal found 8/30![Frontier logo]()
$230
This American Airlines deal was found by Cheapflights users on 8/31. 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.
Tue 10/66:17 am -
2 stops10h 06m
Deal found 8/31![American Airlines logo]()
$247
Find flight deals from Boise to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Dulles Intl (IAD). 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 September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $303 (Delta) |
One-way from | $152 (Delta) |
Popular in | August |
Cheapest in | May |
Average price | $480 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Dulles Intl 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 7,457,451 searches. Data last updated September 2, 2026.
Use the filters below to find and compare flights from Boise to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Sat 9/19
2:11 pm-12:41 am
1 stop8h 30m
Washington, D.C. Dulles Intl
Tue 9/22
6:47 pm-11:59 pm
1 stop7h 12m
$303
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Tue 9/29
10:34 am-10:56 pm
1 stop10h 22m
Washington, D.C. Dulles Intl
Tue 10/6
6:13 am-10:42 am
1 stop6h 29m
$303
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Mon 10/26
12:08 pm-10:49 pm
1 stop8h 41m
Washington, D.C. Dulles Intl
Sun 11/1
6:00 am-1:34 pm
1 stop9h 34m
$327
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Fri 9/25
1:06 pm-11:43 pm
1 stop8h 37m
Washington, D.C. Dulles Intl
Tue 9/29
6:10 am-1:44 pm
1 stop9h 34m
$327
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Sat 9/12
5:30 am-1:31 pm
1 stop6h 01m
Washington, D.C. Dulles Intl
Sat 9/19
7:25 am-3:16 pm
1 stop9h 51m
$333
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Wed 9/16
10:34 am-10:56 pm
1 stop10h 22m
Washington, D.C. Dulles Intl
Tue 9/29
6:47 pm-11:59 pm
1 stop7h 12m
$333
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Sat 9/12
2:11 pm-12:41 am
1 stop8h 30m
Washington, D.C. Dulles Intl
Sun 9/20
6:47 pm-11:59 pm
1 stop7h 12m
$333
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Fri 10/23
10:34 am-10:49 pm
1 stop10h 15m
Washington, D.C. Dulles Intl
Sun 11/1
6:00 am-1:34 pm
1 stop9h 34m
$351
Quickest round-trip
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Tue 12/1
3:00 pm-11:36 pm
1 stop6h 36m
Washington, D.C. Dulles Intl
Wed 12/2
7:06 pm-12:10 am
1 stop7h 04m
$361
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Thu 10/22
6:04 pm-5:40 am
1 stop9h 36m
Washington, D.C. Dulles Intl
Mon 10/26
7:24 pm-1:47 pm
1 stop20h 23m
$366
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Boise to Dulles Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Dulles Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Boise with our price prediction graph.
BOI-IAD
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 Boise to Washington, D.C. Dulles Intl Airport
What is the cheapest month to book a flight from Boise to Washington, D.C. Dulles Intl Airport?
Currently, May is the cheapest month in which you can book a flight from Boise to Washington, D.C. Dulles Intl Airport (average of $340). Flying from Boise to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $728). 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.
How much does it cost to fly round-trip from Boise to Washington, D.C. Dulles Intl Airport?
Airfare is below average for this route at the moment.
Boise to Washington, D.C. Dulles Intl Airport flights typically cost between $331 and $623 in September.The cheapest round-trip price found within the last 5 days was $303 on Delta (Sep 22-Sep 29).
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated September 2, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Boise to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Related info for your journey
Find useful and relevant information for your journey from Boise to Dulles Intl. 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 Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring
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Other flights to Dulles Intl
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Boise and Dulles Intl flights
Browse other Boise and Dulles Intl flight options. Last updated on September 2, 2026.
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Top 4 airlines flying from Boise to Dulles Intl
Discover the top 4 airlines that operate flights from Boise to Dulles Intl. 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 7,457,451 searches. Data last updated September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$176 | Average$336 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$245 | Average$490 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$278 | Average$540 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$340 | Average$422 | FlexibilityNo cancel fee | On-time63% |