$59+ Cheap flights from San Diego (SAN) 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BOI
Aug 28 — Sep 41
Round-trip
1 adult, Economy
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Cheapest flights from San Diego to IdahoExplore the most affordable flight options available from San Diego to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
Explore the most affordable flight options available from San Diego to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/294:30 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Sat 9/51:50 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 7/28![Southwest logo]()
$117
This Priceline deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/238:59 pm
SAN
- GEG
Nonstop2h 54m
Alaska Airlines
Sat 9/266:00 am
GEG
- SAN
Nonstop2h 59m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/236:15 pm
SAN
- GEG
1 stop4h 45m
Southwest
Sat 9/262:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/28![Southwest logo]()
$127
This Expedia deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/17:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Fri 9/47:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$135
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/234:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Mon 9/286:49 pm
BOI
- SAN
Nonstop2h 30m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$137
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/197:00 am
SAN
- GEG
1 stop8h 14m
Delta
Tue 9/2211:10 am
GEG
- SAN
1 stop6h 49m
Delta
Deal found 7/29![Delta logo]()
$137
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/17:05 am
SAN
- GEG
1 stop4h 45m
Southwest
Fri 9/412:20 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/28![Southwest logo]()
$141
This Priceline deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/267:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Wed 9/27:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$145
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:03 pm
SAN
- BOI
1 stop16h 54m
Frontier
Mon 10/53:52 pm
BOI
- SAN
1 stop5h 25m
Frontier
Deal found 7/24![Frontier logo]()
$149
This Trip.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Thu 8/204:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Mon 8/246:49 pm
BOI
- SAN
Nonstop2h 30m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$150
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.
Wed 9/94:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Sat 9/267:20 am
BOI
- SAN
Nonstop2h 21m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/235:54 pm
SAN
- BOI
1 stop19h 01m
Frontier
Mon 9/282:50 pm
BOI
- SAN
1 stop6h 27m
Frontier
Deal found 7/26![Frontier logo]()
$152
Best flights from San Diego to IdahoDiscover carefully curated flight deals from San Diego to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
Discover carefully curated flight deals from San Diego to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/194:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Wed 9/237:20 am
BOI
- SAN
Nonstop2h 21m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$117
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:15 am
SAN
- GEG
Nonstop2h 50m
Southwest
Fri 10/1612:15 pm
GEG
- SAN
Nonstop2h 45m
Southwest
Deal found 7/25![Southwest logo]()
$153
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:01 pm
SAN
- GEG
1 stop4h 53m
Delta
Sun 10/45:10 am
GEG
- SAN
1 stop4h 59m
Delta
Deal found 7/27![Delta logo]()
$173
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/2512:33 pm
SAN
- JAC
1 stop7h 07m
United Airlines
Tue 9/14:25 pm
JAC
- SAN
1 stop5h 09m
United Airlines
Deal found 7/26![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/14:35 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Tue 9/86:25 am
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 7/26![Southwest logo]()
$157
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Sat 9/197:20 am
BOI
- SAN
Nonstop2h 21m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/59:46 am
SAN
- GEG
1 stop6h 23m
Delta
Wed 9/95:10 am
GEG
- SAN
1 stop4h 59m
Delta
Deal found 7/26![Delta logo]()
$173
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:35 am
SAN
- GEG
1 stop4h 55m
Southwest
Sun 11/810:55 am
GEG
- SAN
Nonstop2h 45m
Southwest
Deal found 7/28![Southwest logo]()
$159
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/287:13 pm
SAN
- BOI
1 stop3h 46m
Delta
Sun 8/306:00 am
BOI
- SAN
1 stop3h 41m
Delta
Deal found 7/28![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/511:15 am
SAN
- GEG
Nonstop2h 45m
Southwest
Tue 9/84:55 pm
GEG
- SAN
1 stop4h 45m
Southwest
Deal found 7/27![Southwest logo]()
$163
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/284:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Sun 8/307:00 am
BOI
- SAN
1 stop3h 50m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 10/2311:15 am
SAN
- GEG
Nonstop2h 50m
Southwest
Sun 10/257:30 pm
GEG
- SAN
1 stop4h 20m
Southwest
Deal found 7/28![Southwest logo]()
$163
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:00 pm
SAN
- BOI
1 stop6h 59m
Delta
Sat 9/194:00 pm
BOI
- SAN
1 stop4h 04m
Delta
Deal found 7/24![Delta logo]()
$187
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 10/1610:29 am
SAN
- BOI
Nonstop2h 18m
Alaska Airlines
Sun 10/187:37 pm
BOI
- SAN
Nonstop2h 21m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$187
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.
Sat 9/511:15 am
SAN
- GEG
Nonstop2h 45m
Southwest
Wed 9/910:55 am
GEG
- SAN
1 stop6h 00m
Southwest
Deal found 7/24![Southwest logo]()
$163
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:13 pm
SAN
- BOI
1 stop3h 46m
Delta
Wed 8/196:00 am
BOI
- SAN
1 stop3h 41m
Delta
Deal found 7/25![Delta logo]()
$187
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/112:15 pm
SAN
- GEG
Nonstop2h 40m
Southwest
Fri 9/181:50 pm
GEG
- SAN
2 stops7h 25m
Southwest
Deal found 7/27![Southwest logo]()
$168
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/176:20 am
SAN
- SUN
1 stop6h 34m
United Airlines
Wed 8/192:50 pm
SUN
- SAN
1 stop6h 05m
United Airlines
Deal found 7/26![United Airlines logo]()
$281
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/2911:15 am
SAN
- GEG
Nonstop2h 45m
Southwest
Tue 9/110:55 am
GEG
- SAN
2 stops7h 45m
Southwest
Deal found 7/27![Southwest logo]()
$168
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/243:56 pm
SAN
- SUN
1 stop4h 41m
United Airlines
Wed 8/262:50 pm
SUN
- SAN
1 stop6h 05m
United Airlines
Deal found 7/28![United Airlines logo]()
$281
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:30 am
SAN
- IDA
1 stop7h 53m
United Airlines
Sat 9/194:04 pm
IDA
- SAN
1 stop5h 33m
United Airlines
Deal found 7/25![United Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/201:20 pm
SAN
- BOI
1 stop4h 50m
Southwest
Tue 8/257:40 am
BOI
- SAN
2 stops5h 05m
Southwest
Deal found 7/28![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 10/14:23 pm
SAN
- LWS
1 stop6h 45m
Delta
Mon 10/512:14 pm
LWS
- SAN
1 stop5h 52m
Delta
Deal found 7/28![Delta logo]()
$262
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/116:30 am
SAN
- IDA
1 stop5h 59m
United Airlines
Tue 9/224:04 pm
IDA
- SAN
1 stop5h 30m
United Airlines
Deal found 7/28![United Airlines logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/296:55 am
SAN
- JAC
1 stop5h 35m
Alaska Airlines
Sat 9/53:10 pm
JAC
- SAN
Nonstop2h 36m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/304:23 pm
SAN
- LWS
1 stop6h 45m
Delta
Mon 10/512:14 pm
LWS
- SAN
1 stop5h 52m
Delta
Deal found 7/28![Delta logo]()
$262
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:43 pm
SAN
- IDA
2 stops8h 16m
Alaska Airlines
Tue 10/131:58 pm
IDA
- SAN
1 stop6h 45m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/158:45 am
SAN
- IDA
1 stop7h 31m
United Airlines
Tue 8/182:25 pm
IDA
- SAN
1 stop7h 09m
United Airlines
Deal found 7/26![United Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/121:36 pm
SAN
- JAC
1 stop4h 45m
Delta
Sat 9/195:55 pm
JAC
- SAN
1 stop5h 33m
Delta
Deal found 7/26![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:30 am
SAN
- IDA
1 stop5h 59m
United Airlines
Thu 9/104:04 pm
IDA
- SAN
1 stop7h 24m
United Airlines
Deal found 7/28![United Airlines logo]()
$346
Last-minute flights from San Diego to IdahoDiscover last-minute flight deals from San Diego to Idaho. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Idaho. Data last updated July 29, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Thu 8/204:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Mon 8/246:49 pm
BOI
- SAN
Nonstop2h 30m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$150
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/205:30 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Mon 8/243:45 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 7/28![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/205:30 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Thu 8/276:00 am
BOI
- SAN
1 stop4h 35m
Southwest
Deal found 7/28![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/205:30 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Tue 8/252:25 pm
BOI
- SAN
2 stops6h 25m
Southwest
Deal found 7/28![Southwest logo]()
$172
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/207:02 pm
SAN
- GEG
1 stop4h 57m
Delta
Mon 8/245:00 pm
GEG
- SAN
1 stop6h 50m
Delta
Deal found 7/28![Delta logo]()
$173
This Trip.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Thu 8/204:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Sun 8/237:20 am
BOI
- SAN
Nonstop2h 21m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$181
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/217:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Wed 9/27:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$153
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/215:01 pm
SAN
- GEG
1 stop6h 52m
Delta
Wed 9/24:20 pm
GEG
- SAN
1 stop6h 29m
Delta
Deal found 7/28![Delta logo]()
$155
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/2211:15 am
SAN
- GEG
Nonstop2h 45m
Southwest
Sat 8/2912:45 pm
GEG
- SAN
1 stop7h 05m
Southwest
Deal found 7/26![Southwest logo]()
$163
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:50 pm
SAN
- BOI
2 stops5h 05m
Southwest
Sat 8/294:05 pm
BOI
- SAN
1 stop3h 45m
Southwest
Deal found 7/25![Southwest logo]()
$178
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/246:20 am
SAN
- BOI
1 stop4h 10m
Southwest
Thu 8/273:45 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 7/28![Southwest logo]()
$163
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/294:30 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Sat 9/51:50 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 7/28![Southwest logo]()
$117
One-way flights from San Diego to IdahoSearch for one-way flight options from San Diego to Idaho. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
Search for one-way flight options from San Diego to Idaho. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/2910:45 am
SAN
- BOI
Nonstop2h 17m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$59
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/298:59 pm
SAN
- GEG
Nonstop2h 54m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$59
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/293:00 pm
SAN
- BOI
1 stop6h 59m
Delta
Deal found 7/29![Delta logo]()
$69
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/87:00 am
SAN
- GEG
1 stop5h 20m
Delta
Deal found 7/28![Delta logo]()
$69
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/291:55 pm
SAN
- BOI
2 stops7h 05m
Southwest
Deal found 7/29![Southwest logo]()
$74
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/84:10 pm
SAN
- GEG
2 stops5h 35m
Southwest
Deal found 7/28![Southwest logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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.
Thu 9/109:03 pm
SAN
- BOI
1 stop15h 52m
Frontier
Deal found 7/28![Frontier logo]()
$75
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.
Wed 9/910:45 am
SAN
- BOI
Nonstop2h 17m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$76
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:59 pm
SAN
- GEG
Nonstop2h 54m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$76
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Mon 8/247:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$77
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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.
Mon 8/244:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$79
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:25 am
SAN
- GEG
1 stop8h 13m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$81
Find flight deals from San Diego to Idaho
Keep the following information in mind while searching for San Diego to Idaho flight deals. Data was last updated July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Southwest) |
One-way from | $59 (Alaska Airlines) |
Popular in | November |
Cheapest in | February |
Average price | $297 |
Good round-trip deal | $217 or less |
Good one-way deal | $148 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego 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 29, 2026.
Use the filters below to find and compare flights from San Diego to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoBoise
SAN - BOI
SANBOI
San Diego
Sat 9/19
4:58 pm-8:20 pm
Nonstop2h 22m
Boise Air Term. Gowen Fld
Wed 9/23
7:20 am-8:41 am
Nonstop2h 21m
$117
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Mon 10/12
11:15 am-2:05 pm
Nonstop2h 50m
Spokane
Fri 10/16
12:15 pm-3:00 pm
Nonstop2h 45m
$153
Quickest round-trip
San DiegoBoise
SAN - BOI
SANBOI
San Diego
Tue 9/1
4:35 pm-7:45 pm
Nonstop2h 10m
Boise Air Term. Gowen Fld
Tue 9/8
6:25 am-7:40 am
Nonstop2h 15m
$157
San DiegoBoise
SAN - BOI
SANBOI
San Diego
Wed 9/16
4:58 pm-8:20 pm
Nonstop2h 22m
Boise Air Term. Gowen Fld
Sat 9/19
7:20 am-8:41 am
Nonstop2h 21m
$157
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Fri 11/6
6:35 am-11:30 am
1 stop4h 55m
Spokane
Sun 11/8
10:55 am-1:40 pm
Nonstop2h 45m
$159
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 9/5
11:15 am-2:00 pm
Nonstop2h 45m
Spokane
Tue 9/8
4:55 pm-9:40 pm
1 stop4h 45m
$163
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Fri 10/23
11:15 am-2:05 pm
Nonstop2h 50m
Spokane
Sun 10/25
7:30 pm-11:50 pm
1 stop4h 20m
$163
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 9/5
11:15 am-2:00 pm
Nonstop2h 45m
Spokane
Wed 9/9
10:55 am-4:55 pm
1 stop6h 00m
$163
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Fri 9/11
2:15 pm-4:55 pm
Nonstop2h 40m
Spokane
Fri 9/18
1:50 pm-9:15 pm
2 stops7h 25m
$168
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 8/29
11:15 am-2:00 pm
Nonstop2h 45m
Spokane
Tue 9/1
10:55 am-6:40 pm
2 stops7h 45m
$168
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Diego to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from San Diego with our price prediction graph.
SAN-BOI
SAN-GEG
SAN-IDA
SAN-JAC
SAN-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 San Diego to Idaho
SAN-USID
SAN-BOI
SAN-GEG
SAN-IDA
SAN-JAC
What is the cheapest month to book a flight from San Diego to Idaho?
Currently, February is the cheapest month in which you can book a flight from San Diego to Idaho (average of $222). Flying from San Diego to Idaho in November is currently the most expensive (average of $357). 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.
What is the cheapest time of day to fly from SAN to ID?
Find hourly flight availability from San Diego to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2026.
It’s optimal to fly from San Diego to Idaho at noon. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the morning.
Weekly flight availability from San Diego to Idaho
Explore weekly flight availability from San Diego to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2026.
The most flights from SAN to USID are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from San Diego to Idaho?
Airfare is below average for this route at the moment.
San Diego to Idaho flights typically cost between $207 and $386 in August.The cheapest round-trip price found within the last 5 days was $117 on Southwest (Aug 29-Sep 5).
How far ahead should I book a flight from San Diego to Idaho?
Booking 23 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 29, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from San Diego 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.
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from San Diego 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 San Diego 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 San Diego to Idaho by cabin class
Find flights from San Diego to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Diego and Idaho flights
Browse other San Diego and Idaho flight options. Last updated on July 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Diego to Idaho flights
Consider these flights traveling from San Diego to Idaho.
Top 6 airlines flying from San Diego to Idaho
Discover the top 6 airlines that operate flights from San Diego 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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$405 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$127 | Average$218 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$134 | Average$440 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$151 | Average$350 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$162 | Average$279 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$306 | FlexibilityNo cancel fee | On-time62% |