$152+ Cheap flights from Boise (BOI) to Washington, D.C. (WAS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — WAS
Oct 5 — Oct 121
Round-trip
1 adult, Economy
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Cheapest flights from Boise to Washington, D.C.Explore the most affordable flight options available from Boise to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
Explore the most affordable flight options available from Boise to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/192:50 pm -
1 stop13h 30m
Thu 10/226:00 am -
1 stop9h 55m
Deal found 9/2![Frontier logo]()
$244
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.
Tue 9/221:06 pm -
1 stop8h 37m
Tue 9/297:25 am -
1 stop9h 51m
Deal found 8/31![Delta logo]()
$303
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 9/223:21 pm -
1 stop6h 38m
Tue 9/298:40 am -
1 stop7h 51m
Deal found 8/31![American Airlines logo]()
$303
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:00 am -
1 stop8h 07m
Tue 10/66:25 am -
1 stop7h 03m
Deal found 9/1![United Airlines logo]()
$303
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:15 am -
2 stops10h 00m
Mon 11/26:40 pm -
1 stop8h 45m
Deal found 9/2![Southwest logo]()
$308
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:40 pm -
1 stop12h 50m
Tue 10/66:20 am -
1 stop8h 55m
Deal found 9/1![Southwest logo]()
$308
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:21 pm -
1 stop6h 38m
Mon 10/55:00 am -
1 stop8h 24m
Deal found 9/2![American Airlines logo]()
$312
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.
Fri 10/96:49 pm -
1 stop8h 56m
Tue 10/1312:37 pm -
2 stops11h 31m
Deal found 9/2![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 9/4. 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 10/1410:34 am -
1 stop10h 15m
Mon 10/197:05 am -
1 stop10h 15m
Deal found 9/4![Delta logo]()
$323
This Delta deal was found by Cheapflights users on 9/4. 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 10/101:40 pm -
1 stop7h 48m
Sat 10/172:59 pm -
1 stop7h 37m
Deal found 9/4![Delta logo]()
$323
This Southwest deal was found by Cheapflights users on 9/3. 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.
Tue 10/202:25 pm -
1 stop7h 55m
Fri 10/306:35 am -
2 stops13h 35m
Deal found 9/3![Southwest logo]()
$325
Best flights from Boise to Washington, D.C.Discover carefully curated flight deals from Boise to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated flight deals from Boise to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
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.
Thu 10/291:40 pm -
1 stop7h 09m
Mon 11/26:05 am -
1 stop8h 30m
Deal found 8/31![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Sat 10/35:00 am -
1 stop6h 30m
Sat 10/106:35 am -
1 stop8h 23m
Deal found 9/4![United Airlines logo]()
$323
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:35 am -
2 stops11h 35m
Mon 11/97:45 pm -
1 stop7h 40m
Deal found 9/1![Southwest logo]()
$360
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 10/246:43 am -
1 stop7h 42m
Wed 10/288:00 am -
1 stop9h 23m
Deal found 9/4![Alaska Airlines logo]()
$383
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:21 pm -
1 stop6h 38m
Mon 9/288:40 am -
1 stop7h 51m
Deal found 9/1![American Airlines logo]()
$426
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 12/2211:52 pm -
1 stop7h 24m
Tue 12/294:50 pm -
1 stop9h 02m
Deal found 9/1![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 9/4. 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 10/1410:34 am -
1 stop10h 15m
Mon 10/197:05 am -
1 stop10h 15m
Deal found 9/4![Delta logo]()
$323
This Southwest deal was found by Cheapflights users on 9/4. 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.
Thu 10/227:25 am -
2 stops15h 30m
Mon 10/267:25 pm -
1 stop7h 40m
Deal found 9/4![Southwest logo]()
$374
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.
Mon 10/2612:08 pm -
1 stop8h 41m
Sun 11/16:00 am -
1 stop9h 34m
Deal found 9/1![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 9/3. 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 9/185:52 pm -
1 stop9h 48m
Tue 9/229:03 am -
1 stop8h 27m
Deal found 9/3![Alaska Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 9/3. 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.
Thu 10/155:15 pm -
1 stop10h 30m
Sat 10/2411:35 am -
2 stops13h 05m
Deal found 9/3![Southwest logo]()
$382
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.
Fri 10/26:00 am -
1 stop8h 49m
Mon 10/54:45 pm -
1 stop9h 13m
Deal found 9/2![Delta logo]()
$327
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 10/246:25 am -
1 stop6h 39m
Wed 10/286:00 am -
2 stops14h 03m
Deal found 9/3![United Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Sat 9/2612:26 pm -
1 stop6h 48m
Mon 9/2812:57 pm -
2 stops13h 02m
Deal found 9/4![United Airlines logo]()
$442
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 9/198:49 am -
1 stop9h 25m
Tue 9/226:47 pm -
1 stop7h 12m
Deal found 8/31![Delta logo]()
$333
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.
Sat 9/197:48 pm -
1 stop8h 42m
Tue 9/227:50 am -
1 stop9h 40m
Deal found 9/1![Alaska Airlines logo]()
$458
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.
Wed 9/1610:34 am -
1 stop10h 22m
Tue 9/297:00 am -
1 stop7h 16m
Deal found 8/31![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/1611:50 am -
1 stop8h 40m
Tue 9/2912:57 pm -
2 stops13h 02m
Deal found 9/3![United Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 9/4. 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.
Sun 10/411:10 pm -
1 stop7h 59m
Thu 10/87:05 am -
1 stop10h 15m
Deal found 9/4![Delta logo]()
$347
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:25 am -
1 stop11h 00m
Fri 9/253:00 pm -
2 stops10h 40m
Deal found 9/2![Southwest logo]()
$528
This Delta deal was found by Cheapflights users on 9/3. 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 stop7h 33m
Tue 9/226:05 am -
1 stop9h 39m
Deal found 9/3![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 9/4. 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.
Sat 9/196:10 am -
1 stop9h 00m
Wed 9/236:35 am -
2 stops10h 15m
Deal found 9/4![Southwest logo]()
$542
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/233:10 pm -
2 stops12h 30m
Mon 12/2812:25 pm -
2 stops13h 55m
Deal found 9/1![Southwest logo]()
$550
This Delta deal was found by Cheapflights users on 9/3. 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 11/251:41 pm -
1 stop9h 00m
Tue 12/17:06 pm -
1 stop7h 04m
Deal found 9/3![Delta logo]()
$401
This Delta deal was found by Cheapflights users on 9/3. 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 9/172:11 pm -
1 stop8h 30m
Tue 9/228:08 am -
1 stop6h 53m
Deal found 9/3![Delta logo]()
$401
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.
Fri 10/211:10 pm -
1 stop8h 02m
Sun 10/46:00 am -
1 stop9h 01m
Deal found 9/1![Delta logo]()
$425
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.
Fri 9/2511:10 pm -
2 stops10h 35m
Sun 9/276:00 am -
1 stop9h 01m
Deal found 9/1![Delta logo]()
$441
Last-minute flights from Boise to Washington, D.C.Discover last-minute flight deals from Boise to Washington, D.C.. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Washington, D.C.. Data last updated September 5, 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 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.
Tue 9/221:06 pm -
1 stop8h 37m
Tue 9/297:25 am -
1 stop9h 51m
Deal found 8/31![Delta logo]()
$303
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 9/223:21 pm -
1 stop6h 38m
Tue 9/298:40 am -
1 stop7h 51m
Deal found 8/31![American Airlines logo]()
$303
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:00 am -
1 stop8h 07m
Tue 10/66:25 am -
1 stop7h 03m
Deal found 9/1![United Airlines logo]()
$303
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:40 pm -
1 stop12h 50m
Tue 10/66:20 am -
1 stop8h 55m
Deal found 9/1![Southwest logo]()
$308
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:21 pm -
1 stop6h 38m
Mon 10/55:00 am -
1 stop8h 24m
Deal found 9/2![American Airlines logo]()
$312
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.
Fri 10/96:49 pm -
1 stop8h 56m
Tue 10/1312:37 pm -
2 stops11h 31m
Deal found 9/2![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 9/4. 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 10/101:40 pm -
1 stop7h 48m
Sat 10/172:59 pm -
1 stop7h 37m
Deal found 9/4![Delta logo]()
$323
This Delta deal was found by Cheapflights users on 9/4. 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 10/1410:34 am -
1 stop10h 15m
Mon 10/197:05 am -
1 stop10h 15m
Deal found 9/4![Delta logo]()
$323
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/192:50 pm -
1 stop13h 30m
Thu 10/226:00 am -
1 stop9h 55m
Deal found 9/2![Frontier logo]()
$244
This Southwest deal was found by Cheapflights users on 9/3. 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.
Tue 10/202:25 pm -
1 stop7h 55m
Fri 10/306:35 am -
2 stops13h 35m
Deal found 9/3![Southwest logo]()
$325
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:15 am -
2 stops10h 00m
Mon 11/26:40 pm -
1 stop8h 45m
Deal found 9/2![Southwest logo]()
$308
One-way flights from Boise to Washington, D.C.Search for one-way flight options from Boise to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way flight options from Boise to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:50 pm -
1 stop10h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$152
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 9/223:21 pm -
1 stop6h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![American Airlines logo]()
$152
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 9/2811:10 pm -
1 stop8h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$152
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:48 pm -
1 stop8h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Alaska Airlines logo]()
$162
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.
Fri 10/26:44 pm -
1 stop9h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$163
This Delta deal was found by Cheapflights users on 9/3. 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 10/211:10 pm -
1 stop8h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$176
This Delta deal was found by Cheapflights users on 9/3. 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 11/205:15 am -
1 stop6h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$176
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.
Tue 9/2212:17 pm -
1 stop8h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$182
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
2 stops16h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$184
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.
Sun 10/411:10 pm -
1 stop9h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$185
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 9/224:20 pm -
1 stop11h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Alaska Airlines logo]()
$187
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:25 am -
2 stops9h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Southwest logo]()
$187
Find flight deals from Boise to Washington, D.C.
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Washington, D.C. (WAS). 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 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $244 (Expedia) |
One-way from | $152 (United Airlines) |
Popular in | July |
Cheapest in | February |
Average price | $354 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Washington, D.C. 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 5, 2026.
Use the filters below to find and compare flights from Boise to Washington, D.C. 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
Tue 9/22
12:17 pm-10:56 pm
1 stop8h 39m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - DCA Washington, D.C. Reagan-National
BOIDCA
Boise Air Term. Gowen Fld
Tue 9/22
3:21 pm-11:59 pm
1 stop6h 38m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Tue 10/13
2:25 pm-12:20 am
1 stop7h 55m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Tue 9/29
5:00 am-3:07 pm
1 stop8h 07m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Sat 10/3
11:03 am-8:14 pm
1 stop7h 11m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - DCA Washington, D.C. Reagan-National
BOIDCA
Boise Air Term. Gowen Fld
Tue 10/6
12:14 pm-11:59 pm
1 stop9h 45m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - DCA Washington, D.C. Reagan-National
BOIDCA
Boise Air Term. Gowen Fld
Sat 10/3
2:11 pm-11:44 pm
1 stop7h 33m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - DCA Washington, D.C. Reagan-National
BOIDCA
Boise Air Term. Gowen Fld
Thu 10/1
3:21 pm-11:59 pm
1 stop6h 38m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$152
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Tue 9/22
7:48 pm-6:30 am
1 stop8h 42m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$162
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Wed 10/21
7:00 am-8:15 pm
2 stops11h 15m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$168
Showing 1-10 of 51 resultsSorted by cheapest first
Compare providers for flights from Boise to Washington, D.C.
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 Washington, D.C. 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. 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. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Washington, D.C. flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Washington, D.C. 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. 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 Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Boise with our price prediction graph.
BOI-WAS
BOI-IAD
BOI-DCA
BOI-BWI
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.
BOI-WAS
BOI-IAD
BOI-DCA
BOI-BWI
What is the cheapest month to book a flight from Boise to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from Boise to Washington, D.C. (average of $380). Flying from Boise to Washington, D.C. in December is currently the most expensive (average of $570). 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.?
Airfare is below average for this route at the moment.
Boise to Washington, D.C. flights typically cost between $302 and $476 in October.The cheapest round-trip price found within the last 5 days was $244 on Frontier (Oct 19-Oct 22).
How far ahead should I book a flight from Boise to Washington, D.C.?
The best time to book flights from Boise to Washington, D.C. is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Washington, D.C.
Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated September 5, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Boise to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
8.0
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 Washington, D.C.. 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.?
Book flights to Washington, D.C. if you plan to visit one of these locationsAlexandria
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring
Largo
Springfield
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Boise and Washington, D.C. flights
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Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 5, 2026.
Top 5 airlines flying from Boise to Washington, D.C.
Discover the top 5 airlines that operate flights from Boise to Washington, D.C.. 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 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$176 | Average$390 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$245 | Average$461 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$278 | Average$528 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$302 | Average$525 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$340 | Average$497 | FlexibilityNo cancel fee | On-time63% |