$131+ Cheap flights from Reagan-National (DCA) 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BOI
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Cheapest flights from Reagan-National to IdahoExplore the most affordable flight options available from Reagan-National to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from Reagan-National to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This Priceline deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am
DCA
- BOI
1 stop9h 31m
Multiple Airlines
Sun 8/3012:24 pm
BOI
- DCA
1 stop7h 35m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$274
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:00 am
DCA
- BOI
1 stop7h 29m
Frontier
Tue 8/111:24 pm
BOI
- DCA
1 stop6h 35m
Frontier
Deal found 7/22![Frontier logo]()
$287
This Priceline deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am
DCA
- BOI
1 stop9h 31m
Multiple Airlines
Tue 9/11:24 pm
BOI
- DCA
1 stop6h 35m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$288
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:00 am
DCA
- BOI
1 stop8h 16m
American Airlines
Tue 8/183:19 pm
BOI
- DCA
1 stop6h 40m
American Airlines
Deal found 7/21![American Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/183:12 pm
DCA
- BOI
1 stop8h 59m
American Airlines
Sat 8/222:58 pm
BOI
- DCA
1 stop7h 01m
American Airlines
Deal found 7/23![American Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/254:40 pm
DCA
- BOI
1 stop7h 45m
Southwest
Tue 9/16:00 am
BOI
- DCA
2 stops10h 00m
Southwest
Deal found 7/24![Southwest logo]()
$308
This Frontier deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/177:00 am
DCA
- BOI
1 stop7h 04m
Frontier
Tue 9/2212:59 pm
BOI
- DCA
1 stop6h 59m
Frontier
Deal found 7/25![Frontier logo]()
$311
This Expedia deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 am
DCA
- BOI
1 stop7h 29m
Frontier
Thu 8/131:24 pm
BOI
- DCA
1 stop25h 35m
Frontier
Deal found 7/22![Frontier logo]()
$313
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:00 am
DCA
- BOI
1 stop8h 25m
American Airlines
Sun 11/11:27 pm
BOI
- DCA
1 stop7h 02m
American Airlines
Deal found 7/22![American Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 10/298:40 pm
DCA
- BOI
2 stops16h 40m
Southwest
Tue 11/35:50 am
BOI
- DCA
2 stops8h 30m
Southwest
Deal found 7/23![Southwest logo]()
$319
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:00 am
DCA
- GEG
1 stop9h 54m
American Airlines
Sat 9/55:40 am
GEG
- DCA
1 stop10h 35m
American Airlines
Deal found 7/22![American Airlines logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:00 am
DCA
- GEG
1 stop9h 47m
Alaska Airlines
Mon 8/317:24 pm
GEG
- DCA
1 stop17h 36m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$328
Best flights from Reagan-National to IdahoDiscover carefully curated flight deals from Reagan-National to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from Reagan-National to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:05 am
DCA
- BOI
1 stop9h 39m
Delta
Mon 10/511:10 pm
BOI
- DCA
1 stop8h 00m
Delta
Deal found 7/20![Delta logo]()
$293
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/207:35 am
DCA
- BOI
1 stop8h 54m
American Airlines
Sat 8/222:58 pm
BOI
- DCA
1 stop7h 01m
American Airlines
Deal found 7/25![American Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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
DCA
- BOI
2 stops8h 20m
Southwest
Tue 9/16:00 am
BOI
- DCA
2 stops10h 00m
Southwest
Deal found 7/24![Southwest logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:00 am
DCA
- GEG
1 stop9h 47m
Alaska Airlines
Mon 8/317:24 pm
GEG
- DCA
1 stop17h 36m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$328
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/46:30 am
DCA
- SUN
1 stop7h 42m
United Airlines
Fri 1/812:55 pm
SUN
- DCA
1 stop7h 31m
United Airlines
Deal found 7/20![United Airlines logo]()
$519
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:45 pm
DCA
- BOI
1 stop9h 13m
Delta
Mon 10/511:10 pm
BOI
- DCA
1 stop8h 00m
Delta
Deal found 7/20![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/174:35 pm
DCA
- BOI
2 stops9h 00m
Southwest
Tue 8/256:00 am
BOI
- DCA
2 stops10h 00m
Southwest
Deal found 7/24![Southwest logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:59 am
DCA
- BOI
1 stop11h 21m
Alaska Airlines
Tue 8/256:00 am
BOI
- DCA
1 stop8h 00m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 10/25:59 pm
DCA
- BOI
1 stop7h 59m
Delta
Mon 10/511:10 pm
BOI
- DCA
1 stop8h 00m
Delta
Deal found 7/23![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:30 pm
DCA
- GEG
2 stops9h 30m
Southwest
Tue 9/296:15 am
GEG
- DCA
1 stop7h 45m
Southwest
Deal found 7/20![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/294:35 pm
DCA
- GEG
1 stop8h 00m
Delta
Sat 9/52:05 pm
GEG
- DCA
1 stop6h 45m
Delta
Deal found 7/23![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/284:35 pm
DCA
- GEG
1 stop9h 40m
Southwest
Fri 9/46:00 am
GEG
- DCA
1 stop7h 55m
Southwest
Deal found 7/23![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/267:45 am
DCA
- GEG
1 stop8h 13m
Delta
Tue 9/2912:38 pm
GEG
- DCA
1 stop7h 02m
Delta
Deal found 7/23![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/252:10 pm
DCA
- GEG
2 stops11h 15m
Southwest
Sat 8/297:05 am
GEG
- DCA
2 stops10h 45m
Southwest
Deal found 7/24![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:54 pm
DCA
- GEG
1 stop7h 37m
Delta
Fri 9/115:24 am
GEG
- DCA
1 stop8h 25m
Delta
Deal found 7/21![Delta logo]()
$347
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:40 pm
DCA
- GEG
2 stops10h 45m
Southwest
Wed 9/26:15 am
GEG
- DCA
2 stops9h 10m
Southwest
Deal found 7/21![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:00 am
DCA
- BOI
1 stop6h 57m
Delta
Sat 8/15:30 am
BOI
- DCA
1 stop6h 18m
Delta
Deal found 7/20![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:00 pm
DCA
- GEG
2 stops11h 55m
Southwest
Sat 10/246:55 am
GEG
- DCA
2 stops10h 50m
Southwest
Deal found 7/21![Southwest logo]()
$357
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 1/215:01 pm
DCA
- SUN
1 stop21h 45m
American Airlines
Sun 1/241:16 pm
SUN
- DCA
1 stop8h 43m
American Airlines
Deal found 7/24![American Airlines logo]()
$616
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:45 pm
DCA
- BOI
1 stop8h 13m
Delta
Mon 8/311:10 pm
BOI
- DCA
1 stop8h 00m
Delta
Deal found 7/20![Delta logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 12/1110:59 am
DCA
- IDA
2 stops29h 28m
Alaska Airlines
Tue 1/54:00 pm
IDA
- DCA
1 stop22h 04m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$569
This deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/16:30 am
DCA
- SUN
1 stop7h 42m
United Airlines
Tue 1/512:55 pm
SUN
- DCA
1 stop7h 31m
United Airlines
Deal found 7/24![United Airlines logo]()
$638
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:00 am
DCA
- BOI
1 stop6h 57m
Delta
Mon 8/311:10 pm
BOI
- DCA
1 stop8h 00m
Delta
Deal found 7/20![Delta logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/88:00 am
DCA
- IDA
1 stop16h 56m
Alaska Airlines
Tue 9/156:18 am
IDA
- DCA
1 stop13h 41m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/82:00 pm
DCA
- JAC
1 stop6h 51m
United Airlines
Sat 9/199:28 am
JAC
- DCA
1 stop11h 02m
United Airlines
Deal found 7/23![United Airlines logo]()
$639
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:05 am
DCA
- BOI
1 stop9h 39m
Delta
Wed 10/71:33 pm
BOI
- DCA
1 stop8h 12m
Delta
Deal found 7/20![Delta logo]()
$356
This Alaska Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:27 pm
DCA
- JAC
1 stop22h 03m
Alaska Airlines
Thu 9/1012:02 pm
JAC
- DCA
2 stops25h 58m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$595
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:45 pm
DCA
- GEG
1 stop9h 57m
Delta
Sun 10/185:10 am
GEG
- DCA
1 stop7h 13m
Delta
Deal found 7/22![Delta logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:00 am
DCA
- SUN
1 stop27h 38m
Alaska Airlines
Tue 12/810:20 am
SUN
- DCA
1 stop9h 39m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$598
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:20 pm
DCA
- WYS
1 stop25h 46m
United Airlines
Mon 8/241:55 pm
WYS
- DCA
1 stop23h 11m
United Airlines
Deal found 7/20![United Airlines logo]()
$734
Last-minute flights from Reagan-National to IdahoDiscover last-minute flight deals from Reagan-National to Idaho. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Reagan-National to Idaho. Data last updated July 25, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:00 am
DCA
- BOI
1 stop7h 29m
Frontier
Tue 8/111:24 pm
BOI
- DCA
1 stop6h 35m
Frontier
Deal found 7/22![Frontier logo]()
$287
This Expedia deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 am
DCA
- BOI
1 stop7h 29m
Frontier
Thu 8/131:24 pm
BOI
- DCA
1 stop25h 35m
Frontier
Deal found 7/22![Frontier logo]()
$313
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:00 am
DCA
- BOI
1 stop8h 16m
American Airlines
Tue 8/183:19 pm
BOI
- DCA
1 stop6h 40m
American Airlines
Deal found 7/21![American Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/183:12 pm
DCA
- BOI
1 stop8h 59m
American Airlines
Sat 8/222:58 pm
BOI
- DCA
1 stop7h 01m
American Airlines
Deal found 7/25![American Airlines logo]()
$303
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:07 am
DCA
- BOI
1 stop7h 22m
American Airlines
Fri 8/212:49 pm
BOI
- DCA
1 stop7h 09m
American Airlines
Deal found 7/20![American Airlines logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/2210:59 am
DCA
- BOI
1 stop11h 21m
Alaska Airlines
Tue 8/256:00 am
BOI
- DCA
1 stop8h 00m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/254:40 pm
DCA
- BOI
1 stop7h 45m
Southwest
Tue 9/16:00 am
BOI
- DCA
2 stops10h 00m
Southwest
Deal found 7/24![Southwest logo]()
$308
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:00 am
DCA
- GEG
1 stop9h 47m
Alaska Airlines
Mon 8/317:24 pm
GEG
- DCA
1 stop17h 36m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$328
This Priceline deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am
DCA
- BOI
1 stop9h 31m
Multiple Airlines
Sun 8/3012:24 pm
BOI
- DCA
1 stop7h 35m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$274
This Priceline deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am
DCA
- BOI
1 stop9h 31m
Multiple Airlines
Tue 9/11:24 pm
BOI
- DCA
1 stop6h 35m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$288
This Priceline deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:59 am
DCA
- BOI
1 stop11h 21m
Multiple Airlines
Sun 8/3012:24 pm
BOI
- DCA
1 stop7h 35m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:00 am
DCA
- GEG
1 stop9h 54m
American Airlines
Sat 9/55:40 am
GEG
- DCA
1 stop10h 35m
American Airlines
Deal found 7/22![American Airlines logo]()
$327
One-way flights from Reagan-National to IdahoSearch for one-way flight options from Reagan-National to Idaho. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from Reagan-National to Idaho. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This CheapOair deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:59 pm
DCA
- BOI
1 stop23h 30m
Frontier
Deal found 7/20![Frontier logo]()
$131
This Trip.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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.
Mon 8/101:59 pm
DCA
- BOI
1 stop24h 30m
Frontier
Deal found 7/24![Frontier logo]()
$132
This Trip.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/21:59 pm
DCA
- BOI
1 stop23h 30m
Frontier
Deal found 7/23![Frontier logo]()
$133
This CheapOair deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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
DCA
- BOI
1 stop20h 29m
Frontier
Deal found 7/23![Frontier logo]()
$134
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:40 am
DCA
- BOI
1 stop8h 51m
American Airlines
Deal found 7/21![American Airlines logo]()
$147
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:30 am
DCA
- BOI
1 stop6h 56m
United Airlines
Deal found 7/22![United Airlines logo]()
$152
This Trip.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:27 pm
DCA
- GEG
1 stop8h 44m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/174:35 pm
DCA
- BOI
2 stops9h 00m
Southwest
Deal found 7/23![Southwest logo]()
$157
This CheapOair deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am
DCA
- GEG
1 stop9h 47m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$164
This Trip.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 9/210:59 am
DCA
- BOI
1 stop11h 21m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$165
This Booking.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:00 pm
DCA
- GEG
1 stop8h 25m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 9/106:40 pm
DCA
- GEG
1 stop7h 05m
Southwest
Deal found 7/24![Southwest logo]()
$170
Find flight deals from Reagan-National to Idaho
Keep the following information in mind while searching for Reagan-National to Idaho flight deals. Data was last updated July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $274 (Priceline) |
One-way from | $131 (CheapOair) |
Popular in | December |
Cheapest in | May |
Average price | $482 |
Cheapflights Fare Finder
Customize your flight search to find flights from Reagan-National 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 July 25, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Boise
DCA - BOI
DCABOI
Washington, D.C. Reagan-National
Tue 9/29
6:05 am-1:44 pm
1 stop9h 39m
Boise Air Term. Gowen Fld
Mon 10/5
11:10 pm-9:10 am
1 stop8h 00m
$293
Washington, D.C.Boise
DCA - BOI
DCABOI
Washington, D.C. Reagan-National
Thu 8/20
7:35 am-2:29 pm
1 stop8h 54m
Boise Air Term. Gowen Fld
Sat 8/22
2:58 pm-11:59 pm
1 stop7h 01m
$303
Washington, D.C.Boise
DCA - BOI
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
DCA - BOI
DCABOI
Washington, D.C. Reagan-National
Thu 10/1
4:45 pm-11:58 pm
1 stop9h 13m
Boise Air Term. Gowen Fld
Mon 10/5
11:10 pm-9:10 am
1 stop8h 00m
$313
Washington, D.C.Boise
DCA - BOI
DCABOI
Washington, D.C. Reagan-National
Fri 10/2
5:59 pm-11:58 pm
1 stop7h 59m
Boise Air Term. Gowen Fld
Mon 10/5
11:10 pm-9:10 am
1 stop8h 00m
$327
Washington, D.C.Spokane
DCA - GEG
DCAGEG
Washington, D.C. Reagan-National
Tue 8/25
8:00 am-2:47 pm
1 stop9h 47m
Spokane
Mon 8/31
7:24 pm-4:00 pm
1 stop17h 36m
$328
Washington, D.C.Boise
DCA - BOI
DCABOI
Washington, D.C. Reagan-National
Mon 8/17
4:35 pm-11:35 pm
2 stops9h 00m
Boise Air Term. Gowen Fld
Tue 8/25
6:00 am-6:00 pm
2 stops10h 00m
$333
Washington, D.C.Boise
DCA - BOI
DCABOI
Washington, D.C. Reagan-National
Sat 8/22
10:59 am-8:20 pm
1 stop11h 21m
Boise Air Term. Gowen Fld
Tue 8/25
6:00 am-4:00 pm
1 stop8h 00m
$337
Washington, D.C.Spokane
DCA - GEG
DCAGEG
Washington, D.C. Reagan-National
Sat 8/29
4:35 pm-9:35 pm
1 stop8h 00m
Spokane
Sat 9/5
2:05 pm-11:50 pm
1 stop6h 45m
$337
Washington, D.C.Spokane
DCA - GEG
DCAGEG
Washington, D.C. Reagan-National
Sat 9/26
7:45 am-12:58 pm
1 stop8h 13m
Spokane
Tue 9/29
12:38 pm-10:40 pm
1 stop7h 02m
$337
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Reagan-National to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Reagan-National with our price prediction graph.
DCA-BOI
DCA-GEG
DCA-SUN
DCA-IDA
DCA-JAC
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. Reagan-National Airport to Idaho
DCA-USID
DCA-BOI
DCA-GEG
DCA-SUN
DCA-IDA
How much does it cost to fly round-trip from Washington, D.C. Reagan-National Airport to Idaho?
Airfare is below average for this route at the moment.
Washington, D.C. Reagan-National Airport to Idaho flights typically cost between $370 and $546 in August.The cheapest round-trip price found within the last 5 days was $274 on Multiple Airlines (Aug 26-Aug 30).
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 July 25, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Idaho, such as Alaska Airlines,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentPhally,Oct 2024
IAD - SFO
Food
7.0
Boarding
8.1
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentPhally,Oct 2024
IAD - SFO
Food
7.0
Boarding
8.1
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentPhally,Oct 2024
IAD - SFO
Food
7.0
Boarding
8.1
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentPhally,Oct 2024
IAD - SFO
Food
7.0
Boarding
8.1
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentPhally,Oct 2024
IAD - SFO
Related info for your journey
Find useful and relevant information for your journey from Reagan-National 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 Reagan-National to Idaho
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Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
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Reagan-National and Idaho flights
Browse other Reagan-National and Idaho flight options. Last updated on July 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Reagan-National to Idaho flights
Consider these flights traveling from Reagan-National to Idaho.
Top 4 airlines flying from Reagan-National to Idaho
Discover the top 4 airlines that operate flights from Reagan-National 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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$221 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$262 | Average$464 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$262 | Average$578 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$388 | Average$458 | FlexibilityNo cancel fee | On-time75% |