$112+ Cheap flights from Washington, D.C. (WAS) to Idaho
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BOI
Sep 6 — Sep 131
Round-trip
1 adult, Economy
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Find cheap flights from Washington, D.C. to Idaho with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Washington, D.C. to IdahoExplore the most affordable flight options available from Washington, D.C. to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2026.
Explore the most affordable flight options available from Washington, D.C. to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2026.
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am -
1 stop7h 29m
Thu 9/312:24 pm -
1 stop7h 35m
Deal found 8/6![Frontier logo]()
$204
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am -
1 stop7h 29m
Tue 9/11:24 pm -
1 stop21h 27m
Deal found 8/6![Frontier logo]()
$224
This Frontier deal was found by Cheapflights users on 8/5. 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 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 8/5![Frontier logo]()
$242
This CheapOair deal was found by Cheapflights users on 8/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 pm -
1 stop20h 29m
Thu 8/2012:24 pm -
1 stop22h 27m
Deal found 8/7![Frontier logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Fri 9/186:00 am -
1 stop9h 55m
Mon 9/212:50 pm -
1 stop13h 30m
Deal found 8/2![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Fri 9/186:00 am -
1 stop9h 55m
Sun 9/202:50 pm -
1 stop13h 30m
Deal found 8/2![Frontier logo]()
$273
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am -
1 stop7h 29m
Wed 9/96:00 am -
1 stop8h 00m
Deal found 8/3![Multiple Airlines logo]()
$277
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:59 am -
1 stop11h 21m
Tue 9/81:24 pm -
1 stop20h 47m
Deal found 8/6![Multiple Airlines logo]()
$279
This Frontier deal was found by Cheapflights users on 8/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am -
1 stop9h 55m
Mon 9/212:50 pm -
1 stop13h 30m
Deal found 8/5![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sat 8/298:59 am -
1 stop27h 23m
Thu 9/1010:09 am -
1 stop17h 11m
Deal found 8/6![Multiple Airlines logo]()
$285
This Expedia deal was found by Cheapflights users on 8/4. 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 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
Fri 9/182:50 pm -
1 stop13h 30m
Deal found 8/4![Frontier logo]()
$289
This Expedia deal was found by Cheapflights users on 8/7. 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 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
Tue 9/152:16 pm -
1 stop7h 43m
Deal found 8/7![Multiple Airlines logo]()
$293
Best flights from Washington, D.C. to IdahoDiscover carefully curated flight deals from Washington, D.C. to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2026.
Discover carefully curated flight deals from Washington, D.C. to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/226:15 am -
1 stop7h 11m
Tue 9/292:44 pm -
1 stop6h 41m
Deal found 8/5![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 8/7. 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 9/247:15 pm -
1 stop6h 44m
Mon 9/287:19 pm -
2 stops11h 31m
Deal found 8/7![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 8/3. 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 8/254:50 pm -
2 stops8h 20m
Tue 9/16:00 am -
2 stops10h 00m
Deal found 8/3![Southwest logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 8/4. 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 9/157:00 am -
1 stop8h 39m
Tue 9/223:34 pm -
1 stop11h 06m
Deal found 8/4![Alaska Airlines logo]()
$337
This American Airlines deal was found by Cheapflights users on 8/7. 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.
Sat 10/106:00 am -
1 stop9h 20m
Mon 10/121:50 pm -
1 stop17h 24m
Deal found 8/7![American Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 8/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:20 pm -
1 stop8h 20m
Sun 9/66:30 am -
1 stop6h 33m
Deal found 8/6![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 8/3. 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.
Tue 8/256:15 am -
2 stops9h 27m
Tue 9/15:30 am -
1 stop6h 27m
Deal found 8/3![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 8/5. 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 9/224:40 pm -
1 stop7h 50m
Tue 9/296:00 am -
2 stops10h 00m
Deal found 8/5![Southwest logo]()
$328
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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.
Wed 1/65:38 pm -
1 stop8h 19m
Wed 1/135:00 am -
1 stop8h 26m
Deal found 8/6![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 8/4. 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 9/66:00 am -
1 stop9h 42m
Sun 9/2011:10 pm -
1 stop7h 59m
Deal found 8/4![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 10/247:02 am -
1 stop8h 52m
Wed 10/286:03 am -
1 stop8h 09m
Deal found 8/6![Alaska Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 8/6. 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.
Thu 1/76:05 am -
1 stop9h 25m
Tue 1/128:50 am -
1 stop7h 40m
Deal found 8/6![Southwest logo]()
$339
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Tue 9/110:10 am -
1 stop7h 56m
Sun 9/66:00 am -
1 stop10h 05m
Deal found 8/2![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 8/7. 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 10/287:23 am -
1 stop7h 12m
Sun 11/18:25 am -
1 stop9h 38m
Deal found 8/7![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 8/4. 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.
Tue 9/155:40 pm -
1 stop8h 20m
Tue 9/224:55 pm -
1 stop10h 40m
Deal found 8/4![Southwest logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:15 pm -
1 stop16h 41m
Sun 9/204:27 pm -
1 stop21h 13m
Deal found 8/2![Alaska Airlines logo]()
$346
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Sun 8/304:15 pm -
1 stop7h 31m
Sun 9/66:00 am -
1 stop10h 05m
Deal found 8/2![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 8/6. 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 11/197:30 am -
1 stop7h 03m
Sun 11/2211:35 pm -
1 stop7h 36m
Deal found 8/6![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 8/2. 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.
Sat 9/512:45 pm -
2 stops11h 15m
Fri 9/116:00 am -
1 stop7h 55m
Deal found 8/2![Southwest logo]()
$343
This Alaska Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 9/174:43 pm -
1 stop9h 12m
Mon 9/215:52 pm -
1 stop10h 38m
Deal found 8/5![Alaska Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 8/2. 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 10/166:59 pm -
1 stop7h 00m
Mon 10/1911:10 pm -
1 stop8h 09m
Deal found 8/2![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 8/6. 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.
Thu 1/73:55 pm -
1 stop9h 20m
Tue 1/126:10 am -
2 stops9h 05m
Deal found 8/6![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:23 am -
1 stop7h 12m
Tue 11/101:13 pm -
1 stop8h 24m
Deal found 8/5![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Tue 8/255:20 pm -
1 stop8h 51m
Mon 8/317:24 pm -
1 stop17h 36m
Deal found 8/7![Alaska Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Tue 1/56:17 am -
2 stops9h 12m
Tue 1/122:40 pm -
1 stop6h 20m
Deal found 8/4![United Airlines logo]()
$402
This Southwest deal was found by Cheapflights users on 8/4. 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.
Tue 9/154:40 pm -
1 stop8h 30m
Tue 9/226:15 am -
2 stops9h 10m
Deal found 8/4![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 8/3. 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 8/267:00 am -
1 stop7h 14m
Fri 8/282:53 pm -
1 stop6h 28m
Deal found 8/3![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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.
Tue 9/17:00 am -
1 stop8h 31m
Wed 9/25:52 am -
1 stop7h 52m
Deal found 8/6![Alaska Airlines logo]()
$367
This American Airlines deal was found by Cheapflights users on 8/2. 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.
Tue 8/185:00 am -
2 stops9h 15m
Tue 8/253:38 pm -
1 stop6h 21m
Deal found 8/2![American Airlines logo]()
$604
This Southwest deal was found by Cheapflights users on 8/4. 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 9/1010:20 am -
1 stop8h 15m
Sun 9/136:45 pm -
1 stop8h 55m
Deal found 8/4![Southwest logo]()
$349
Last-minute flights from Washington, D.C. to IdahoDiscover last-minute flight deals from Washington, D.C. to Idaho. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from Washington, D.C. to Idaho. Data last updated August 7, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 pm -
1 stop20h 29m
Thu 8/2012:24 pm -
1 stop22h 27m
Deal found 8/7![Frontier logo]()
$254
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am -
1 stop7h 29m
Tue 9/11:24 pm -
1 stop21h 27m
Deal found 8/6![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sat 8/298:59 am -
1 stop27h 23m
Thu 9/1010:09 am -
1 stop17h 11m
Deal found 8/6![Multiple Airlines logo]()
$285
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am -
1 stop7h 29m
Thu 9/312:24 pm -
1 stop7h 35m
Deal found 8/6![Frontier logo]()
$204
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am -
1 stop7h 29m
Wed 9/96:00 am -
1 stop8h 00m
Deal found 8/3![Multiple Airlines logo]()
$277
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:59 am -
1 stop11h 21m
Tue 9/81:24 pm -
1 stop20h 47m
Deal found 8/6![Multiple Airlines logo]()
$279
This Frontier deal was found by Cheapflights users on 8/5. 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 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 8/5![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 8/7. 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 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
Tue 9/152:16 pm -
1 stop7h 43m
Deal found 8/7![Multiple Airlines logo]()
$293
This Frontier deal was found by Cheapflights users on 8/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am -
1 stop9h 55m
Mon 9/212:50 pm -
1 stop13h 30m
Deal found 8/5![Frontier logo]()
$282
This Expedia deal was found by Cheapflights users on 8/4. 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 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
Fri 9/182:50 pm -
1 stop13h 30m
Deal found 8/4![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Fri 9/186:00 am -
1 stop9h 55m
Mon 9/212:50 pm -
1 stop13h 30m
Deal found 8/2![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Fri 9/186:00 am -
1 stop9h 55m
Sun 9/202:50 pm -
1 stop13h 30m
Deal found 8/2![Frontier logo]()
$273
One-way flights from Washington, D.C. to IdahoSearch for one-way flight options from Washington, D.C. to Idaho. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
Search for one-way flight options from Washington, D.C. to Idaho. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:59 pm -
1 stop23h 30m
Deal found 8/5![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 9/116:00 am -
1 stop9h 55m
Deal found 8/6![Frontier logo]()
$128
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:00 pm -
1 stop20h 29m
Deal found 8/5![Frontier logo]()
$132
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/125:26 pm -
1 stop7h 14m
Deal found 8/4![United Airlines logo]()
$152
This Southwest deal was found by Cheapflights users on 8/4. 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 9/123:05 pm -
1 stop8h 30m
Deal found 8/4![Southwest logo]()
$152
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Wed 9/166:30 am -
1 stop6h 56m
Deal found 8/7![United Airlines logo]()
$152
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:35 am -
1 stop8h 54m
Deal found 8/5![American Airlines logo]()
$154
This Southwest deal was found by Cheapflights users on 8/4. 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 9/121:00 pm -
2 stops10h 35m
Deal found 8/4![Southwest logo]()
$157
This American Airlines deal was found by Cheapflights users on 8/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:02 am -
1 stop9h 35m
Deal found 8/3![American Airlines logo]()
$160
This Southwest deal was found by Cheapflights users on 8/3. 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.
Wed 9/96:00 am -
2 stops15h 50m
Deal found 8/3![Southwest logo]()
$163
This Southwest deal was found by Cheapflights users on 8/6. 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.
Fri 9/114:55 pm -
2 stops9h 00m
Deal found 8/6![Southwest logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am -
1 stop30h 19m
Deal found 8/5![Multiple Airlines logo]()
$164
Find flight deals from Washington, D.C. to Idaho
Keep the following information in mind while searching for Washington, D.C. to Idaho flight deals. Data was last updated August 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (Expedia) |
One-way from | $112 (Trip.com) |
Popular in | December |
Cheapest in | May |
Average price | $400 |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Idaho 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
Tue 9/22
6:15 am-11:26 am
1 stop7h 11m
Boise Air Term. Gowen Fld
Tue 9/29
2:44 pm-11:25 pm
1 stop6h 41m
$303
Washington, D.C.Boise
DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld
DCABOI
Washington, D.C. Reagan-National
Tue 9/1
4:20 pm-10:40 pm
1 stop8h 20m
Boise Air Term. Gowen Fld
Sun 9/6
6:30 am-3:03 pm
1 stop6h 33m
$303
BaltimoreBoise
BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld
BWIBOI
Baltimore/Washington
Thu 9/24
7:15 pm-11:59 pm
1 stop6h 44m
Boise Air Term. Gowen Fld
Mon 9/28
7:19 pm-8:50 am
2 stops11h 31m
$308
BaltimoreBoise
BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld
BWIBOI
Baltimore/Washington
Tue 8/25
6:15 am-1:42 pm
2 stops9h 27m
Boise Air Term. Gowen Fld
Tue 9/1
5:30 am-1:57 pm
1 stop6h 27m
$308
Washington, D.C.Boise
DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld
DCABOI
Washington, D.C. Reagan-National
Tue 8/25
4:50 pm-11:10 pm
2 stops8h 20m
Boise Air Term. Gowen Fld
Tue 9/1
6:00 am-6:00 pm
2 stops10h 00m
$313
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Sun 9/6
6:00 am-1:42 pm
1 stop9h 42m
Boise Air Term. Gowen Fld
Sun 9/20
11:10 pm-9:09 am
1 stop7h 59m
$327
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
7:23 am-12:35 pm
1 stop7h 12m
Boise Air Term. Gowen Fld
Sun 11/1
8:25 am-8:03 pm
1 stop9h 38m
$327
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Thu 11/19
7:30 am-12:33 pm
1 stop7h 03m
Boise Air Term. Gowen Fld
Sun 11/22
11:35 pm-9:11 am
1 stop7h 36m
$327
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Fri 10/16
6:59 pm-11:59 pm
1 stop7h 00m
Boise Air Term. Gowen Fld
Mon 10/19
11:10 pm-9:19 am
1 stop8h 09m
$327
Washington, D.C.Boise
IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld
IADBOI
Washington, D.C. Dulles Intl
Fri 11/6
7:23 am-12:35 pm
1 stop7h 12m
Boise Air Term. Gowen Fld
Tue 11/10
1:13 pm-11:37 pm
1 stop8h 24m
$327
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington, D.C. to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Washington, D.C. with our price prediction graph.
DCA-BOI
IAD-BOI
BWI-BOI
IAD-GEG
DCA-IDA
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. to Idaho
WAS-USID
DCA-BOI
IAD-BOI
BWI-BOI
IAD-GEG
What is the cheapest month to book a flight from Washington, D.C. to Idaho?
Currently, May is the cheapest month in which you can book a flight from Washington, D.C. to Idaho (average of $397). Flying from Washington, D.C. to Idaho in December is currently the most expensive (average of $583). 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. to Idaho?
Airfare is below average for this route at the moment.
Washington, D.C. to Idaho flights typically cost between $304 and $465 in September.The cheapest round-trip price found within the last 5 days was $204 on Frontier (Sep 1-Sep 3).
How far ahead should I book a flight from Washington, D.C. to Idaho?
The best time to book flights from Washington, D.C. to Idaho is 30 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 Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated August 7, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Washington, D.C. to Idaho. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Washington, D.C. to Idaho
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Complete your trip
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Washington, D.C. and Idaho flights
Browse other Washington, D.C. and Idaho flight options. Last updated on August 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Washington, D.C. to Idaho flights
Consider these flights traveling from Washington, D.C. to Idaho.
Top 5 airlines flying from Washington, D.C. to Idaho
Discover the top 5 airlines that operate flights from Washington, D.C. to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$506 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$202 | Average$420 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$221 | Average$581 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$262 | Average$578 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$506 | FlexibilityNo cancel fee | On-time63% |