$107+ Cheap flights from Idaho 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — WAS
Nov 9 — Nov 161
Round-trip
1 adult, Economy
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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
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Cheapest flights from Idaho to Washington, D.C.Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.
Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.
This American Airlines deal was found by Cheapflights users on 10/6. 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 10/292:41 pm -
1 stop7h 18m
Wed 11/46:00 am -
1 stop8h 37m
Deal found 10/6![American Airlines logo]()
$212
This American Airlines deal was found by Cheapflights users on 10/6. 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 10/293:24 pm -
1 stop6h 52m
Wed 11/47:18 am -
1 stop7h 19m
Deal found 10/6![American Airlines logo]()
$212
This Delta deal was found by Cheapflights users on 10/6. 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 10/2812:08 pm -
1 stop8h 41m
Sat 10/316:13 am -
1 stop6h 29m
Deal found 10/6![Delta logo]()
$213
This American Airlines deal was found by Cheapflights users on 10/6. 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.
Wed 10/283:24 pm -
1 stop6h 35m
Sat 10/315:00 am -
1 stop8h 24m
Deal found 10/6![American Airlines logo]()
$213
This Delta deal was found by Cheapflights users on 10/7. 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 11/46:49 pm -
1 stop8h 56m
Wed 11/118:08 am -
1 stop7h 31m
Deal found 10/7![Delta logo]()
$213
This Southwest deal was found by Cheapflights users on 10/6. 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 10/282:25 pm -
1 stop7h 55m
Sat 10/3111:00 am -
2 stops10h 05m
Deal found 10/6![Southwest logo]()
$218
This Delta deal was found by Cheapflights users on 10/6. 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 10/291:06 pm -
2 stops9h 45m
Wed 11/46:10 am -
2 stops8h 25m
Deal found 10/6![Delta logo]()
$223
This Southwest deal was found by Cheapflights users on 10/7. 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 11/41:40 pm -
2 stops14h 05m
Wed 11/113:45 pm -
2 stops8h 50m
Deal found 10/7![Southwest logo]()
$229
This Delta deal was found by Cheapflights users on 10/7. 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 11/58:59 am -
1 stop9h 07m
Mon 11/97:00 am -
1 stop11h 05m
Deal found 10/7![Delta logo]()
$236
This Delta deal was found by Cheapflights users on 10/7. 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 11/103:00 pm -
1 stop6h 21m
Fri 12/47:00 am -
1 stop11h 04m
Deal found 10/7![Delta logo]()
$240
This Delta deal was found by Cheapflights users on 10/8. 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 11/103:00 pm -
1 stop6h 37m
Fri 11/136:59 pm -
1 stop7h 00m
Deal found 10/8![Delta logo]()
$240
This American Airlines deal was found by Cheapflights users on 10/6. 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.
Fri 11/61:24 pm -
1 stop8h 31m
Thu 11/127:18 am -
1 stop7h 19m
Deal found 10/6![American Airlines logo]()
$240
Best flights from Idaho to Washington, D.C.Discover carefully curated flight deals from Idaho to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.
Discover carefully curated flight deals from Idaho to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.
This Delta deal was found by Cheapflights users on 10/6. 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 10/2910:34 am -
1 stop10h 15m
Wed 11/47:05 am -
1 stop10h 15m
Deal found 10/6![Delta logo]()
$213
This Southwest deal was found by Cheapflights users on 10/6. 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 11/31:05 pm -
1 stop6h 40m
Wed 11/113:45 pm -
2 stops8h 50m
Deal found 10/6![Southwest logo]()
$218
This United Airlines deal was found by Cheapflights users on 10/5. 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 1/162:35 pm -
1 stop6h 51m
Mon 1/186:00 am -
1 stop10h 51m
Deal found 10/5![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 10/6. 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 10/281:40 pm -
1 stop7h 48m
Sat 10/316:00 am -
1 stop9h 34m
Deal found 10/6![Delta logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 10/7. 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 12/315:35 am -
1 stop8h 25m
Tue 1/55:05 pm -
1 stop8h 39m
Deal found 10/7![Alaska Airlines logo]()
$450
This American Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:41 pm -
1 stop8h 18m
Tue 12/153:31 pm -
1 stop8h 18m
Deal found 10/10![American Airlines logo]()
$450
This Delta deal was found by Cheapflights users on 10/6. 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 10/291:06 pm -
2 stops9h 45m
Wed 11/46:10 am -
2 stops8h 25m
Deal found 10/6![Delta logo]()
$223
This Delta deal was found by Cheapflights users on 10/8. 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 11/268:55 am -
1 stop8h 59m
Thu 12/37:26 am -
1 stop7h 16m
Deal found 10/8![Delta logo]()
$236
This Southwest deal was found by Cheapflights users on 10/5. 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 12/86:20 am -
1 stop8h 25m
Sun 12/136:40 pm -
1 stop8h 45m
Deal found 10/5![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 10/6. 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 12/87:55 am -
2 stops8h 05m
Sat 12/122:35 pm -
1 stop7h 50m
Deal found 10/6![Southwest logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/5. 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.
Sun 11/17:10 pm -
1 stop8h 14m
Sun 11/86:10 am -
1 stop7h 21m
Deal found 10/5![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 10/8. 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 11/121:41 pm -
1 stop9h 17m
Sun 11/157:01 am -
1 stop7h 32m
Deal found 10/8![Delta logo]()
$291
This United Airlines deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:51 pm -
1 stop6h 17m
Thu 11/1212:34 pm -
2 stops10h 58m
Deal found 10/10![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 10/5. 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 11/58:30 pm -
2 stops12h 35m
Thu 11/1210:35 am -
1 stop15h 20m
Deal found 10/5![Southwest logo]()
$353
This Delta deal was found by Cheapflights users on 10/6. 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 11/1212:13 pm -
1 stop10h 07m
Sun 11/157:00 am -
1 stop11h 05m
Deal found 10/6![Delta logo]()
$292
This Alaska Airlines deal was found by Cheapflights users on 10/9. 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 10/245:59 am -
1 stop8h 01m
Wed 10/285:00 pm -
1 stop8h 59m
Deal found 10/9![Alaska Airlines logo]()
$456
This United Airlines deal was found by Cheapflights users on 10/5. 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 10/2812:00 pm -
1 stop7h 57m
Sat 10/3112:40 pm -
1 stop7h 23m
Deal found 10/5![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 10/7. 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 10/2610:34 am -
1 stop10h 15m
Sun 11/16:13 am -
1 stop6h 29m
Deal found 10/7![Delta logo]()
$310
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:30 pm -
2 stops12h 35m
Fri 11/137:05 am -
2 stops10h 10m
Deal found 10/10![Southwest logo]()
$380
This United Airlines deal was found by Cheapflights users on 10/5. 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 12/32:40 pm -
1 stop6h 19m
Wed 12/96:10 am -
2 stops9h 27m
Deal found 10/5![United Airlines logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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 1/222:53 pm -
1 stop24h 57m
Tue 1/265:30 pm -
1 stop19h 11m
Deal found 10/6![Alaska Airlines logo]()
$503
This Southwest deal was found by Cheapflights users on 10/5. 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 11/1311:15 am -
2 stops9h 35m
Mon 11/162:40 pm -
2 stops9h 55m
Deal found 10/5![Southwest logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 10/5. 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 10/316:09 am -
1 stop8h 16m
Tue 11/38:00 am -
1 stop9h 18m
Deal found 10/5![Alaska Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 10/7. 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.
Mon 10/262:35 pm -
1 stop6h 33m
Fri 10/308:23 am -
1 stop9h 15m
Deal found 10/7![United Airlines logo]()
$445
This Delta deal was found by Cheapflights users on 10/8. 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 10/306:56 pm -
1 stop8h 49m
Tue 11/37:00 am -
1 stop7h 22m
Deal found 10/8![Delta logo]()
$379
This Southwest deal was found by Cheapflights users on 10/5. 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.
Sun 11/88:30 pm -
2 stops9h 50m
Wed 11/114:00 pm -
2 stops8h 35m
Deal found 10/5![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 10/8. 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 10/8![United Airlines logo]()
$451
This Alaska Airlines deal was found by Cheapflights users on 10/9. 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 11/121:53 pm -
1 stop13h 51m
Wed 11/187:46 am -
1 stop9h 32m
Deal found 10/9![Alaska Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 10/8. 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 10/296:56 pm -
1 stop8h 49m
Tue 11/37:00 am -
1 stop7h 22m
Deal found 10/8![Delta logo]()
$379
This Southwest deal was found by Cheapflights users on 10/5. 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 12/296:50 pm -
2 stops8h 50m
Thu 12/316:10 am -
1 stop6h 50m
Deal found 10/5![Southwest logo]()
$458
Last-minute flights from Idaho to Washington, D.C.Discover last-minute flight deals from Idaho to Washington, D.C.. Data last updated October 10, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Washington, D.C.. Data last updated October 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/6. 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 10/2812:08 pm -
1 stop8h 41m
Sat 10/316:13 am -
1 stop6h 29m
Deal found 10/6![Delta logo]()
$213
This American Airlines deal was found by Cheapflights users on 10/6. 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.
Wed 10/283:24 pm -
1 stop6h 35m
Sat 10/315:00 am -
1 stop8h 24m
Deal found 10/6![American Airlines logo]()
$213
This Southwest deal was found by Cheapflights users on 10/6. 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 10/282:25 pm -
1 stop7h 55m
Sat 10/3111:00 am -
2 stops10h 05m
Deal found 10/6![Southwest logo]()
$218
This American Airlines deal was found by Cheapflights users on 10/6. 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 10/292:41 pm -
1 stop7h 18m
Wed 11/46:00 am -
1 stop8h 37m
Deal found 10/6![American Airlines logo]()
$212
This American Airlines deal was found by Cheapflights users on 10/6. 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 10/293:24 pm -
1 stop6h 52m
Wed 11/47:18 am -
1 stop7h 19m
Deal found 10/6![American Airlines logo]()
$212
This Delta deal was found by Cheapflights users on 10/6. 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 10/291:06 pm -
2 stops9h 45m
Wed 11/46:10 am -
2 stops8h 25m
Deal found 10/6![Delta logo]()
$223
This Delta deal was found by Cheapflights users on 10/7. 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 11/46:49 pm -
1 stop8h 56m
Wed 11/118:08 am -
1 stop7h 31m
Deal found 10/7![Delta logo]()
$213
This Southwest deal was found by Cheapflights users on 10/7. 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 11/41:40 pm -
2 stops14h 05m
Wed 11/113:45 pm -
2 stops8h 50m
Deal found 10/7![Southwest logo]()
$229
This Delta deal was found by Cheapflights users on 10/7. 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 11/58:59 am -
1 stop9h 07m
Mon 11/97:00 am -
1 stop11h 05m
Deal found 10/7![Delta logo]()
$236
This American Airlines deal was found by Cheapflights users on 10/6. 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.
Fri 11/61:24 pm -
1 stop8h 31m
Thu 11/127:18 am -
1 stop7h 19m
Deal found 10/6![American Airlines logo]()
$240
This Delta deal was found by Cheapflights users on 10/7. 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 11/103:00 pm -
1 stop6h 21m
Fri 12/47:00 am -
1 stop11h 04m
Deal found 10/7![Delta logo]()
$240
This Delta deal was found by Cheapflights users on 10/8. 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 11/103:00 pm -
1 stop6h 37m
Fri 11/136:59 pm -
1 stop7h 00m
Deal found 10/8![Delta logo]()
$240
One-way flights from Idaho to Washington, D.C.Search for one-way flight options from Idaho to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.
Search for one-way flight options from Idaho to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.
This Delta deal was found by Cheapflights users on 10/6. 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 10/2810:34 am -
1 stop10h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Delta logo]()
$107
This American Airlines deal was found by Cheapflights users on 10/7. 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.
Mon 11/22:41 pm -
1 stop7h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![American Airlines logo]()
$107
This Delta deal was found by Cheapflights users on 10/7. 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 11/26:49 pm -
1 stop8h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Delta logo]()
$107
This Southwest deal was found by Cheapflights users on 10/6. 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 10/276:15 am -
2 stops10h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Southwest logo]()
$112
This Southwest deal was found by Cheapflights users on 10/6. 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 10/276:45 am -
2 stops11h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Southwest logo]()
$112
This Southwest deal was found by Cheapflights users on 10/7. 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.
Mon 11/28:30 pm -
2 stops13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Southwest logo]()
$118
This Cheapflightsfares deal was found by Cheapflights users on 10/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:50 pm -
1 stop13h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 11/97:47 pm -
3 stops36h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$124
This United Airlines deal was found by Cheapflights users on 10/7. 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.
Mon 11/232:51 pm -
1 stop6h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![United Airlines logo]()
$125
This Delta deal was found by Cheapflights users on 10/6. 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 10/263:00 pm -
1 stop6h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Delta logo]()
$125
This Southwest deal was found by Cheapflights users on 10/6. 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 10/285:45 am -
2 stops9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Southwest logo]()
$129
This Delta deal was found by Cheapflights users on 10/8. 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 11/58:59 am -
1 stop9h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$130
Find flight deals from Idaho to Washington, D.C.
Keep the following information in mind while searching for Idaho to Washington, D.C. flight deals. Data was last updated October 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $212 (American Airlines) |
One-way from | $107 (Delta) |
Popular in | July |
Cheapest in | February |
Average price | $392 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho 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 October 10, 2026.
Use the filters below to find and compare flights from Idaho 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
Thu 10/29
12:08 pm-10:49 pm
1 stop8h 41m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Mon 11/2
8:59 am-8:06 pm
1 stop9h 07m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Thu 11/5
8:59 am-8:06 pm
1 stop9h 07m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Mon 1/11
12:42 pm-11:51 pm
1 stop9h 09m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - DCA Washington, D.C. Reagan-National
BOIDCA
Boise Air Term. Gowen Fld
Tue 11/3
3:00 pm-11:44 pm
1 stop6h 44m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Mon 11/2
6:49 pm-5:45 am
1 stop8h 56m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Wed 11/4
6:49 pm-5:45 am
1 stop8h 56m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Thu 11/19
1:41 pm-12:58 am
1 stop9h 17m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$107
BoiseBaltimore
BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington
BOIBWI
Boise Air Term. Gowen Fld
Mon 11/2
8:30 pm-12:10 pm
2 stops13h 40m
Baltimore/Washington
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$118
Quickest round-trip
BoiseWashington, D.C.
BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl
BOIIAD
Boise Air Term. Gowen Fld
Mon 11/23
2:51 pm-11:15 pm
1 stop6h 24m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$125
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Idaho with our price prediction graph.
BOI-DCA
BOI-BWI
BOI-IAD
IDA-DCA
IDA-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 Idaho to Washington, D.C.
USID-WAS
BOI-DCA
BOI-BWI
BOI-IAD
IDA-DCA
What is the cheapest month to book a flight from Idaho to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from Idaho to Washington, D.C. (average of $380). Flying from Idaho to Washington, D.C. in December is currently the most expensive (average of $584). 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 Idaho to Washington, D.C.?
Airfare is below average for this route at the moment.
Idaho to Washington, D.C. flights typically cost between $346 and $536 in October.The cheapest round-trip price found within the last 5 days was $212 on American Airlines (Oct 29-Nov 4).
How far ahead should I book a flight from Idaho to Washington, D.C.?
Booking 16 days in advance of your planned departure date is, on average, the best time to get cheap flights from Idaho to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Related info for your journey
Find useful and relevant information for your journey from Idaho 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
Arlington
Woodbridge
Owings Mills
Lanham
Herndon
Tysons
Reston
Hyattsville
Rockville
Springfield
Fredericksburg
Falls Church
Laurel
Oxon Hill
Towson
Clinton
Hunt Valley
Waldorf
Silver Spring
Browse thousands of different options on Cheapflights for your next trip
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Washington, D.C. flight routes
Alternative routes for Idaho to Washington, D.C.
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Complete your trip
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Search flights from Idaho to Washington, D.C. by cabin class
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Idaho and Washington, D.C. flights
Browse other Idaho and Washington, D.C. flight options. Last updated on October 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Washington, D.C. flights
Consider these flights traveling from Idaho to Washington, D.C..
Other flights to Washington, D.C.
Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 10, 2026.
Top 5 airlines flying from Idaho to Washington, D.C.
Discover the top 5 airlines that operate flights from Idaho 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 October 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$176 | Average$375 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$245 | Average$478 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$262 | Average$538 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$682 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$340 | Average$503 | FlexibilityNo cancel fee | On-time63% |