$119+ Cheap flights from Baltimore (BWI) 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BOI
Aug 20 — Aug 271
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Baltimore to Idaho with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Baltimore to Idaho
Cheapest
Best
Last-minute
One-way
Cheapest flights from Baltimore to IdahoExplore the most affordable flight options available from Baltimore to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.
Explore the most affordable flight options available from Baltimore to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:03 am
BWI
- BOI
1 stop9h 26m
American Airlines
Mon 8/243:19 pm
BOI
- BWI
1 stop6h 39m
American Airlines
Deal found 7/19![American Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:17 pm
BWI
- BOI
1 stop6h 42m
Delta
Mon 8/2411:10 pm
BOI
- BWI
2 stops10h 32m
Delta
Deal found 7/17![Delta logo]()
$298
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.
Sun 9/68:00 am
BWI
- BOI
1 stop9h 31m
United Airlines
Sat 9/126:15 am
BOI
- BWI
1 stop9h 25m
United Airlines
Deal found 7/20![United Airlines logo]()
$301
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.
Tue 9/2911:00 am
BWI
- BOI
2 stops10h 45m
Southwest
Tue 10/66:00 am
BOI
- BWI
2 stops12h 00m
Southwest
Deal found 7/20![Southwest logo]()
$303
This Southwest deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/54:45 pm
BWI
- GEG
1 stop8h 35m
Southwest
Mon 11/92:35 pm
GEG
- BWI
1 stop7h 15m
Southwest
Deal found 7/17![Southwest logo]()
$304
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 9/93:40 pm
BWI
- BOI
2 stops9h 30m
Southwest
Wed 9/232:20 pm
BOI
- BWI
1 stop14h 10m
Southwest
Deal found 7/16![Southwest logo]()
$304
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.
Sun 9/66:00 am
BWI
- BOI
2 stops9h 42m
Delta
Thu 9/106:44 pm
BOI
- BWI
1 stop9h 34m
Delta
Deal found 7/20![Delta logo]()
$306
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:15 am
BWI
- GEG
1 stop8h 04m
Delta
Tue 11/1010:45 pm
GEG
- BWI
1 stop9h 23m
Delta
Deal found 7/17![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:20 am
BWI
- BOI
1 stop8h 55m
Southwest
Sat 10/171:35 pm
BOI
- BWI
1 stop14h 10m
Southwest
Deal found 7/19![Southwest logo]()
$309
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 9/297:15 pm
BWI
- BOI
1 stop6h 44m
Delta
Thu 10/86:40 pm
BOI
- BWI
1 stop9h 20m
Delta
Deal found 7/20![Delta logo]()
$313
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/244:18 pm
BWI
- GEG
1 stop7h 28m
United Airlines
Sat 8/295:00 am
GEG
- BWI
2 stops10h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 10/229:00 pm
BWI
- BOI
2 stops16h 20m
Southwest
Mon 10/2612:45 pm
BOI
- BWI
2 stops14h 55m
Southwest
Deal found 7/16![Southwest logo]()
$315
Best flights from Baltimore to IdahoDiscover carefully curated flight deals from Baltimore to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 21, 2026.
Discover carefully curated flight deals from Baltimore to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 21, 2026.
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:10 am
BWI
- BOI
2 stops9h 34m
Delta
Tue 10/66:40 pm
BOI
- BWI
1 stop9h 20m
Delta
Deal found 7/18![Delta logo]()
$298
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.
Sun 9/68:00 am
BWI
- BOI
1 stop9h 31m
United Airlines
Sat 9/126:15 am
BOI
- BWI
1 stop9h 25m
United Airlines
Deal found 7/20![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 9/2410:20 am
BWI
- GEG
1 stop8h 15m
Southwest
Tue 9/294:55 pm
GEG
- BWI
1 stop10h 40m
Southwest
Deal found 7/16![Southwest logo]()
$309
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 9/267:50 am
BWI
- GEG
1 stop10h 04m
Alaska Airlines
Wed 9/305:12 am
GEG
- BWI
1 stop7h 28m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:17 pm
BWI
- BOI
1 stop6h 42m
Delta
Mon 8/2411:10 pm
BOI
- BWI
2 stops10h 32m
Delta
Deal found 7/19![Delta logo]()
$298
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 9/102:00 pm
BWI
- BOI
1 stop8h 40m
Southwest
Sun 9/137:50 pm
BOI
- BWI
1 stop8h 45m
Southwest
Deal found 7/16![Southwest logo]()
$326
This Alaska Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:02 am
BWI
- GEG
1 stop10h 38m
Alaska Airlines
Sun 10/114:41 pm
GEG
- BWI
1 stop9h 39m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$357
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.
Sun 9/276:00 am
BWI
- BOI
1 stop9h 01m
Delta
Tue 10/66:40 pm
BOI
- BWI
1 stop9h 20m
Delta
Deal found 7/20![Delta logo]()
$326
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/133:25 pm
BWI
- BOI
1 stop10h 30m
Southwest
Thu 8/2012:10 pm
BOI
- BWI
1 stop8h 35m
Southwest
Deal found 7/16![Southwest logo]()
$326
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.
Sun 9/67:39 am
BWI
- GEG
1 stop7h 35m
Delta
Wed 9/95:14 pm
GEG
- BWI
1 stop10h 04m
Delta
Deal found 7/21![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:00 pm
BWI
- GEG
2 stops11h 15m
Southwest
Mon 8/175:35 pm
GEG
- BWI
1 stop10h 05m
Southwest
Deal found 7/18![Southwest logo]()
$356
This Delta deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:05 am
BWI
- BOI
1 stop9h 37m
Delta
Sun 9/65:30 am
BOI
- BWI
1 stop6h 27m
Delta
Deal found 7/18![Delta logo]()
$345
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 9/267:50 am
BWI
- IDA
1 stop9h 30m
Alaska Airlines
Wed 9/306:18 am
IDA
- BWI
1 stop9h 50m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/206:30 am
BWI
- GEG
2 stops13h 25m
Southwest
Mon 8/245:10 pm
GEG
- BWI
1 stop10h 20m
Southwest
Deal found 7/16![Southwest logo]()
$369
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 8/248:00 am
BWI
- JAC
1 stop10h 39m
United Airlines
Thu 8/278:05 am
JAC
- BWI
2 stops12h 51m
United Airlines
Deal found 7/20![United Airlines logo]()
$496
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:17 pm
BWI
- BOI
1 stop6h 42m
Delta
Mon 9/711:10 pm
BOI
- BWI
1 stop9h 46m
Delta
Deal found 7/17![Delta logo]()
$345
This Southwest deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:30 am
BWI
- GEG
1 stop8h 20m
Southwest
Sun 8/306:45 pm
GEG
- BWI
1 stop8h 55m
Southwest
Deal found 7/17![Southwest logo]()
$373
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.
Sun 9/276:00 am
BWI
- BOI
1 stop9h 01m
Delta
Thu 10/86:40 pm
BOI
- BWI
1 stop9h 20m
Delta
Deal found 7/20![Delta logo]()
$346
This Alaska Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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.
Sun 8/237:15 pm
BWI
- SUN
1 stop16h 24m
Alaska Airlines
Thu 8/2710:21 am
SUN
- BWI
1 stop18h 09m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$494
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 10/78:35 pm
BWI
- GEG
2 stops17h 15m
Southwest
Sun 10/116:20 pm
GEG
- BWI
1 stop8h 20m
Southwest
Deal found 7/16![Southwest logo]()
$375
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:35 am
BWI
- IDA
1 stop6h 40m
Delta
Sun 9/276:57 pm
IDA
- BWI
1 stop9h 21m
Delta
Deal found 7/17![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/231:00 pm
BWI
- SUN
1 stop8h 14m
United Airlines
Thu 8/277:00 am
SUN
- BWI
2 stops12h 29m
United Airlines
Deal found 7/16![United Airlines logo]()
$564
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.
Sat 8/152:20 pm
BWI
- BOI
2 stops9h 10m
Southwest
Thu 8/2010:25 am
BOI
- BWI
2 stops11h 00m
Southwest
Deal found 7/20![Southwest logo]()
$377
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/287:39 am
BWI
- IDA
1 stop8h 56m
Delta
Mon 8/317:00 pm
IDA
- BWI
2 stops12h 19m
Delta
Deal found 7/16![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:23 pm
BWI
- SUN
1 stop7h 03m
United Airlines
Wed 8/57:00 am
SUN
- BWI
1 stop6h 17m
United Airlines
Deal found 7/17![United Airlines logo]()
$576
This Alaska Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:50 am
BWI
- JAC
1 stop29h 32m
Alaska Airlines
Wed 9/232:10 pm
JAC
- BWI
1 stop23h 30m
Alaska Airlines
Deal found 7/18![Alaska Airlines logo]()
$529
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:10 am
BWI
- IDA
1 stop7h 17m
Delta
Tue 1/56:45 pm
IDA
- BWI
2 stops12h 31m
Delta
Deal found 7/19![Delta logo]()
$354
This Southwest deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BWI
- GEG
2 stops13h 25m
Southwest
Mon 8/246:55 am
GEG
- BWI
2 stops13h 30m
Southwest
Deal found 7/17![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:30 am
BWI
- WYS
1 stop6h 50m
United Airlines
Sun 9/61:55 pm
WYS
- BWI
1 stop7h 01m
United Airlines
Deal found 7/18![United Airlines logo]()
$587
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.
Sat 9/127:50 am
BWI
- JAC
1 stop29h 32m
Alaska Airlines
Wed 9/162:10 pm
JAC
- BWI
1 stop23h 30m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$581
Last-minute flights from Baltimore to IdahoDiscover last-minute flight deals from Baltimore to Idaho. Data last updated July 21, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Idaho. Data last updated July 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:17 pm
BWI
- GEG
1 stop6h 52m
Delta
Thu 8/137:15 pm
GEG
- BWI
1 stop8h 05m
Delta
Deal found 7/17![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:45 am
BWI
- BOI
2 stops14h 00m
Southwest
Tue 8/182:20 pm
BOI
- BWI
1 stop14h 10m
Southwest
Deal found 7/17![Southwest logo]()
$309
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/117:45 am
BWI
- BOI
2 stops14h 00m
Southwest
Mon 8/1712:10 pm
BOI
- BWI
1 stop8h 35m
Southwest
Deal found 7/16![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:17 pm
BWI
- BOI
1 stop6h 42m
Delta
Mon 8/1711:10 pm
BOI
- BWI
1 stop9h 47m
Delta
Deal found 7/17![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/1810:15 am
BWI
- GEG
1 stop14h 50m
Southwest
Sat 8/221:40 pm
GEG
- BWI
1 stop13h 50m
Southwest
Deal found 7/16![Southwest logo]()
$329
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 8/187:17 pm
BWI
- BOI
1 stop6h 42m
Delta
Fri 8/215:30 am
BOI
- BWI
2 stops9h 45m
Delta
Deal found 7/20![Delta logo]()
$331
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:03 am
BWI
- BOI
1 stop9h 26m
American Airlines
Mon 8/243:19 pm
BOI
- BWI
1 stop6h 39m
American Airlines
Deal found 7/19![American Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:17 pm
BWI
- BOI
1 stop6h 42m
Delta
Mon 8/2411:10 pm
BOI
- BWI
2 stops10h 32m
Delta
Deal found 7/17![Delta logo]()
$298
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:17 pm
BWI
- GEG
1 stop6h 52m
Delta
Mon 8/247:15 pm
GEG
- BWI
1 stop8h 05m
Delta
Deal found 7/16![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:05 am
BWI
- BOI
1 stop9h 37m
Delta
Sun 8/2311:10 pm
BOI
- BWI
1 stop9h 47m
Delta
Deal found 7/16![Delta logo]()
$326
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/244:18 pm
BWI
- GEG
1 stop7h 28m
United Airlines
Sat 8/295:00 am
GEG
- BWI
2 stops10h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/2512:30 pm
BWI
- BOI
2 stops12h 00m
Delta
Wed 8/265:30 am
BOI
- BWI
2 stops12h 20m
Delta
Deal found 7/16![Delta logo]()
$303
One-way flights from Baltimore to IdahoSearch for one-way flight options from Baltimore to Idaho. Find affordable one-way fares based on user searches. Data last updated July 21, 2026.
Search for one-way flight options from Baltimore to Idaho. Find affordable one-way fares based on user searches. Data last updated July 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:00 am
BWI
- BOI
2 stops29h 28m
Frontier
Deal found 7/18![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:32 pm
BWI
- BOI
2 stops39h 57m
Frontier
Deal found 7/17![Frontier logo]()
$129
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:30 am
BWI
- BOI
1 stop6h 58m
Delta
Deal found 7/17![Delta logo]()
$147
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:10 pm
BWI
- BOI
2 stops11h 25m
United Airlines
Deal found 7/17![United Airlines logo]()
$152
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:02 am
BWI
- GEG
1 stop9h 35m
American Airlines
Deal found 7/19![American Airlines logo]()
$155
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.
Sun 9/68:00 am
BWI
- BOI
1 stop9h 31m
United Airlines
Deal found 7/20![United Airlines logo]()
$155
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:55 pm
BWI
- BOI
2 stops15h 25m
Southwest
Deal found 7/18![Southwest logo]()
$158
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.
Wed 8/262:20 pm
BWI
- GEG
2 stops10h 45m
Southwest
Deal found 7/20![Southwest logo]()
$160
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.
Sun 9/66:00 am
BWI
- BOI
2 stops9h 42m
Delta
Deal found 7/20![Delta logo]()
$160
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.
Fri 8/214:43 pm
BWI
- GEG
1 stop9h 28m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:20 pm
BWI
- BOI
2 stops40h 44m
Frontier
Deal found 7/19![Frontier logo]()
$164
This American Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:03 am
BWI
- GEG
1 stop9h 34m
American Airlines
Deal found 7/18![American Airlines logo]()
$167
Find flight deals from Baltimore to Idaho
Keep the following information in mind while searching for Baltimore to Idaho flight deals. Data was last updated July 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $293 (Delta) |
One-way from | $119 (Kiwi.com) |
Popular in | December |
Cheapest in | May |
Average price | $458 |
Cheapflights Fare Finder
Customize your flight search to find flights from Baltimore 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 21, 2026.
Use the filters below to find and compare flights from Baltimore to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Wed 9/30
6:10 am-1:44 pm
2 stops9h 34m
Boise Air Term. Gowen Fld
Tue 10/6
6:40 pm-6:00 am
1 stop9h 20m
$298
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Thu 8/20
7:17 pm-11:59 pm
1 stop6h 42m
Boise Air Term. Gowen Fld
Mon 8/24
11:10 pm-11:42 am
2 stops10h 32m
$298
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Sun 9/6
8:00 am-3:31 pm
1 stop9h 31m
Boise Air Term. Gowen Fld
Sat 9/12
6:15 am-5:40 pm
1 stop9h 25m
$301
BaltimoreSpokane
BWI - GEG
BWIGEG
Baltimore/Washington
Thu 9/24
10:20 am-3:35 pm
1 stop8h 15m
Spokane
Tue 9/29
4:55 pm-6:35 am
1 stop10h 40m
$309
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Thu 9/10
2:00 pm-8:40 pm
1 stop8h 40m
Boise Air Term. Gowen Fld
Sun 9/13
7:50 pm-6:35 am
1 stop8h 45m
$326
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Sun 9/27
6:00 am-1:01 pm
1 stop9h 01m
Boise Air Term. Gowen Fld
Tue 10/6
6:40 pm-6:00 am
1 stop9h 20m
$326
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Thu 8/13
3:25 pm-11:55 pm
1 stop10h 30m
Boise Air Term. Gowen Fld
Thu 8/20
12:10 pm-10:45 pm
1 stop8h 35m
$326
BaltimoreSpokane
BWI - GEG
BWIGEG
Baltimore/Washington
Sat 9/26
7:50 am-2:54 pm
1 stop10h 04m
Spokane
Wed 9/30
5:12 am-3:40 pm
1 stop7h 28m
$327
BaltimoreSpokane
BWI - GEG
BWIGEG
Baltimore/Washington
Sun 9/6
7:39 am-12:14 pm
1 stop7h 35m
Spokane
Wed 9/9
5:14 pm-6:18 am
1 stop10h 04m
$339
BaltimoreBoise
BWI - BOI
BWIBOI
Baltimore/Washington
Wed 9/2
6:05 am-1:42 pm
1 stop9h 37m
Boise Air Term. Gowen Fld
Sun 9/6
5:30 am-1:57 pm
1 stop6h 27m
$345
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Baltimore to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Baltimore with our price prediction graph.
BWI-BOI
BWI-GEG
BWI-IDA
BWI-JAC
BWI-SUN
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 Baltimore to Idaho
BWI-USID
BWI-BOI
BWI-GEG
BWI-IDA
BWI-JAC
What is the cheapest month to book a flight from Baltimore to Idaho?
Currently, October is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $440). Flying from Baltimore to Idaho in August is currently the most expensive (average of $707). 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 Baltimore to Idaho?
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 21, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Baltimore to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Boarding
8.1
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentDavid,Aug 2023
BWI - SAN
Related info for your journey
Find useful and relevant information for your journey from Baltimore to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Baltimore to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Baltimore to Idaho by cabin class
Find flights from Baltimore to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Baltimore and Idaho flights
Browse other Baltimore and Idaho flight options. Last updated on July 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Baltimore to Idaho flights
Consider these flights traveling from Baltimore to Idaho.
Top 4 airlines flying from Baltimore to Idaho
Discover the top 4 airlines that operate flights from Baltimore 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 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$353 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$214 | Average$437 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$275 | Average$628 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$481 | FlexibilityNo cancel fee | On-time63% |