$121+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOI
Sep 21 — Sep 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Dulles Intl to Boise 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 Dulles Intl to Boise
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to BoiseExplore 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 August 22, 2026.
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 August 22, 2026.
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am -
1 stop9h 55m
Mon 9/142:50 pm -
1 stop13h 30m
Deal found 8/17![Frontier logo]()
$204
This Expedia deal was found by Cheapflights users on 8/19. 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 9/106:00 am -
1 stop9h 55m
Fri 9/182:50 pm -
1 stop13h 30m
Deal found 8/19![Frontier logo]()
$223
This Expedia deal was found by Cheapflights users on 8/21. 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.
Fri 9/256:00 am -
1 stop9h 55m
Mon 9/282:50 pm -
1 stop13h 30m
Deal found 8/21![Frontier logo]()
$263
This Expedia deal was found by Cheapflights users on 8/19. 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.
Tue 9/157:47 pm -
1 stop20h 15m
Thu 9/242:50 pm -
1 stop13h 30m
Deal found 8/19![Multiple Airlines logo]()
$285
This Orbitz deal was found by Cheapflights users on 8/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:00 am -
1 stop9h 55m
Thu 9/172:50 pm -
1 stop13h 30m
Deal found 8/21![Frontier logo]()
$298
This Delta deal was found by Cheapflights users on 8/18. 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 9/247:25 am -
1 stop9h 51m
Mon 9/2811:10 pm -
1 stop7h 59m
Deal found 8/18![Delta logo]()
$303
This Expedia deal was found by Cheapflights users on 8/18. 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.
Mon 9/215:57 pm -
1 stop17h 59m
Fri 9/252:50 pm -
1 stop13h 30m
Deal found 8/18![Multiple Airlines logo]()
$304
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Tue 12/88:25 am -
1 stop8h 31m
Sat 12/122:43 pm -
1 stop6h 30m
Deal found 8/20![United Airlines logo]()
$314
This Expedia deal was found by Cheapflights users on 8/18. 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 9/106:00 am -
1 stop9h 55m
Sun 9/132:50 pm -
1 stop13h 30m
Deal found 8/18![Frontier logo]()
$316
This Delta deal was found by Cheapflights users on 8/17. 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 11/197:30 am -
1 stop7h 03m
Fri 11/2712:13 pm -
1 stop10h 02m
Deal found 8/17![Delta logo]()
$327
Best flights from Dulles Intl to BoiseDiscover carefully curated flight deals from Dulles Intl to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Dulles Intl to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Delta deal was found by Cheapflights users on 8/19. 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 9/97:25 am -
1 stop9h 51m
Fri 9/1110:34 am -
1 stop10h 22m
Deal found 8/19![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 9/26:15 am -
1 stop7h 13m
Wed 9/95:00 am -
1 stop6h 29m
Deal found 8/20![United Airlines logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 10/247:02 am -
1 stop10h 21m
Wed 10/287:20 am -
1 stop8h 30m
Deal found 8/20![Alaska Airlines logo]()
$361
This Delta deal was found by Cheapflights users on 8/17. 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 9/237:25 am -
1 stop9h 51m
Sat 9/268:55 am -
1 stop9h 06m
Deal found 8/17![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 8/18. 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 10/286:13 am -
1 stop6h 29m
Sun 11/11:06 pm -
1 stop8h 29m
Deal found 8/18![Delta logo]()
$327
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Wed 8/262:47 pm -
1 stop8h 37m
Fri 8/282:44 pm -
1 stop6h 35m
Deal found 8/17![United Airlines logo]()
$363
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 10/217:02 am -
1 stop9h 09m
Thu 10/222:06 pm -
1 stop7h 53m
Deal found 8/20![Alaska Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 8/18. 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 11/58:13 am -
1 stop7h 21m
Sun 11/811:10 pm -
1 stop8h 01m
Deal found 8/18![Delta logo]()
$327
This Delta deal was found by Cheapflights users on 8/20. 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 9/52:50 pm -
1 stop8h 02m
Tue 9/812:17 pm -
1 stop8h 39m
Deal found 8/20![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 8/19. 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 8/266:49 pm -
1 stop7h 10m
Sat 8/298:45 am -
1 stop9h 14m
Deal found 8/19![Delta logo]()
$363
Last-minute flights from Dulles Intl to BoiseDiscover last-minute flight deals from Dulles Intl to Boise. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Boise. Data last updated August 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/18. 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 9/16:00 am -
1 stop9h 42m
Sat 9/51:59 pm -
1 stop8h 35m
Deal found 8/18![Delta logo]()
$333
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am -
1 stop9h 55m
Mon 9/142:50 pm -
1 stop13h 30m
Deal found 8/17![Frontier logo]()
$204
This Expedia deal was found by Cheapflights users on 8/19. 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 9/106:00 am -
1 stop9h 55m
Fri 9/182:50 pm -
1 stop13h 30m
Deal found 8/19![Frontier logo]()
$223
This Expedia deal was found by Cheapflights users on 8/18. 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 9/106:00 am -
1 stop9h 55m
Sun 9/132:50 pm -
1 stop13h 30m
Deal found 8/18![Frontier logo]()
$316
This Orbitz deal was found by Cheapflights users on 8/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:00 am -
1 stop9h 55m
Thu 9/172:50 pm -
1 stop13h 30m
Deal found 8/21![Frontier logo]()
$298
This Expedia deal was found by Cheapflights users on 8/19. 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.
Tue 9/157:47 pm -
1 stop20h 15m
Thu 9/242:50 pm -
1 stop13h 30m
Deal found 8/19![Multiple Airlines logo]()
$285
This Expedia deal was found by Cheapflights users on 8/18. 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 9/176:00 am -
1 stop9h 55m
Thu 9/242:50 pm -
1 stop13h 30m
Deal found 8/18![Frontier logo]()
$327
This Expedia deal was found by Cheapflights users on 8/18. 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.
Mon 9/215:57 pm -
1 stop17h 59m
Fri 9/252:50 pm -
1 stop13h 30m
Deal found 8/18![Multiple Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 8/18. 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 9/247:25 am -
1 stop9h 51m
Mon 9/2811:10 pm -
1 stop7h 59m
Deal found 8/18![Delta logo]()
$303
This Expedia deal was found by Cheapflights users on 8/21. 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.
Fri 9/256:00 am -
1 stop9h 55m
Mon 9/282:50 pm -
1 stop13h 30m
Deal found 8/21![Frontier logo]()
$263
One-way flights from Dulles Intl to BoiseSearch for one-way flight options from Dulles Intl to Boise. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Dulles Intl to Boise. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:00 am -
1 stop9h 55m
Deal found 8/19![Frontier logo]()
$121
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/94:15 pm -
1 stop7h 30m
Deal found 8/18![United Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Tue 10/69:04 pm -
2 stops42h 51m
Deal found 8/21![Frontier logo]()
$163
This SmartFares deal was found by Cheapflights users on 8/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:00 am -
1 stop10h 30m
Deal found 8/17![Alaska Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Wed 9/97:50 am -
2 stops32h 05m
Deal found 8/18![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Tue 9/159:04 pm -
2 stops42h 51m
Deal found 8/18![Frontier logo]()
$179
This Delta deal was found by Cheapflights users on 8/20. 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 8/277:10 am -
1 stop10h 08m
Deal found 8/20![Delta logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/22. 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.
Sun 9/137:50 am -
2 stops32h 05m
Deal found 8/22![Frontier logo]()
$196
This United Airlines deal was found by Cheapflights users on 8/18. 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 12/316:45 am -
1 stop8h 52m
Deal found 8/18![United Airlines logo]()
$226
This Mytrip deal was found by Cheapflights users on 8/17. 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.
Fri 9/257:00 am -
1 stop9h 22m
Deal found 8/17![Alaska Airlines logo]()
$238
Find 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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (Frontier) |
One-way from | $121 (Priceline) |
Popular in | March |
Cheapest in | December |
Average price | $427 |
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 7,457,451 searches. Data last updated August 22, 2026.
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
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 9/9
7:25 am-3:16 pm
1 stop9h 51m
Boise Air Term. Gowen Fld
Fri 9/11
10:34 am-10:56 pm
1 stop10h 22m
$303
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 9/23
7:25 am-3:16 pm
1 stop9h 51m
Boise Air Term. Gowen Fld
Sat 9/26
8:55 am-8:01 pm
1 stop9h 06m
$303
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 10/28
6:13 am-10:42 am
1 stop6h 29m
Boise Air Term. Gowen Fld
Sun 11/1
1:06 pm-11:35 pm
1 stop8h 29m
$327
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Thu 11/5
8:13 am-1:34 pm
1 stop7h 21m
Boise Air Term. Gowen Fld
Sun 11/8
11:10 pm-9:11 am
1 stop8h 01m
$327
Quickest round-trip
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 9/2
6:15 am-11:28 am
1 stop7h 13m
Boise Air Term. Gowen Fld
Wed 9/9
5:00 am-1:29 pm
1 stop6h 29m
$333
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Sat 9/5
2:50 pm-8:52 pm
1 stop8h 02m
Boise Air Term. Gowen Fld
Tue 9/8
12:17 pm-10:56 pm
1 stop8h 39m
$333
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Sat 10/24
7:02 am-3:23 pm
1 stop10h 21m
Boise Air Term. Gowen Fld
Wed 10/28
7:20 am-5:50 pm
1 stop8h 30m
$361
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 8/26
2:47 pm-9:24 pm
1 stop8h 37m
Boise Air Term. Gowen Fld
Fri 8/28
2:44 pm-11:19 pm
1 stop6h 35m
$363
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 8/26
6:49 pm-11:59 pm
1 stop7h 10m
Boise Air Term. Gowen Fld
Sat 8/29
8:45 am-7:59 pm
1 stop9h 14m
$363
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Wed 10/21
7:02 am-2:11 pm
1 stop9h 09m
Boise Air Term. Gowen Fld
Thu 10/22
2:06 pm-11:59 pm
1 stop7h 53m
$379
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to Boise
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 Dulles Intl to Boise in August.
| 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 Washington, D.C. Dulles Intl Airport-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Boise flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Boise 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 Washington, D.C. Dulles Intl Airport-Boise 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 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.
IAD-BOI
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 month to book a flight from Washington, D.C. Dulles Intl Airport to Boise?
Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boise (average of $355). Flying from Washington, D.C. Dulles Intl Airport to Boise in March is currently the most expensive (average of $817). 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 Washington, D.C. Dulles Intl Airport to Boise?
Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Boise flights typically cost between $310 and $594 in September.The cheapest round-trip price found within the last 5 days was $204 on Frontier (Sep 10-Sep 14).
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 August 22, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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.
Traveling to a place near Boise?
Book flights to Boise if you plan to visit one of these locationsOntario
Meridian
Nampa
Caldwell
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Boise flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Dulles Intl
Popular flights
Alternative routes for Dulles Intl to Boise
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boise
Explore flights to Boise departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.
Complete your trip
Complete your trip to Boise by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Dulles Intl to Boise by cabin class
Find flights from Dulles Intl to Boise, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Dulles Intl and Boise flights
Browse other Dulles Intl and Boise flight options. Last updated on August 22, 2026.
Other flights from Dulles Intl
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Dulles Intl to Boise
Discover the top 3 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$202 | Average$330 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$618 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$390 | Average$537 | FlexibilityNo cancel fee | On-time63% |