$109+ Cheap flights from San Francisco (SFO) 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOI
Jul 7 — Jul 141
Round-trip
1 adult, Economy
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Cheapest flights from San Francisco to IdahoExplore the most affordable flight options available from San Francisco to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
Explore the most affordable flight options available from San Francisco to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Sun 9/610:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$217
This Priceline deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Fri 8/2110:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$222
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:59 pm
SFO
- BOI
Nonstop1h 56m
United Airlines
Wed 7/227:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 6/3![United Airlines logo]()
$227
This Orbitz deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:46 pm
SFO
- BOI
Nonstop1h 41m
Multiple Airlines
Tue 9/1512:59 pm
BOI
- SFO
1 stop12h 16m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$229
This Expedia deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
SFO
- BOI
1 stop5h 29m
Frontier
Tue 7/211:24 pm
BOI
- SFO
1 stop11h 59m
Frontier
Deal found 6/7![Frontier logo]()
$230
This Alaska Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Tue 9/154:20 pm
BOI
- SFO
1 stop4h 39m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$232
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:16 pm
SFO
- BOI
1 stop4h 30m
Delta
Sun 9/61:06 pm
BOI
- SFO
1 stop4h 10m
Delta
Deal found 6/2![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:40 pm
SFO
- GEG
1 stop6h 11m
Alaska Airlines
Sat 10/241:57 pm
GEG
- SFO
Nonstop2h 15m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$237
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:15 am
SFO
- BOI
Nonstop1h 49m
United Airlines
Fri 8/2111:52 am
BOI
- SFO
Nonstop2h 01m
United Airlines
Deal found 6/3![United Airlines logo]()
$238
This Travelocity deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:12 am
SFO
- GEG
Nonstop2h 10m
Alaska Airlines
Wed 10/71:57 pm
GEG
- SFO
Nonstop2h 15m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$238
This Booking.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:17 pm
SFO
- BOI
1 stop15h 47m
Multiple Airlines
Sat 9/1910:14 am
BOI
- SFO
Nonstop1h 56m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:15 am
SFO
- BOI
Nonstop1h 49m
United Airlines
Sun 8/238:15 am
BOI
- SFO
Nonstop2h 03m
United Airlines
Deal found 6/4![United Airlines logo]()
$240
Best flights from San Francisco to IdahoDiscover carefully curated flight deals from San Francisco to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
Discover carefully curated flight deals from San Francisco to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Sun 9/610:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:50 am
SFO
- BOI
1 stop5h 24m
Delta
Sun 9/66:00 am
BOI
- SFO
1 stop3h 46m
Delta
Deal found 6/6![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:00 pm
SFO
- BOI
2 stops6h 35m
Southwest
Fri 8/213:45 pm
BOI
- SFO
1 stop5h 45m
Southwest
Deal found 6/3![Southwest logo]()
$263
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/121:54 pm
SFO
- BOI
Nonstop1h 50m
United Airlines
Thu 7/166:30 am
BOI
- SFO
Nonstop2h 00m
United Airlines
Deal found 6/4![United Airlines logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:51 pm
SFO
- BOI
1 stop6h 09m
Alaska Airlines
Sun 8/3010:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:55 am
SFO
- GEG
1 stop15h 12m
Alaska Airlines
Wed 8/128:15 am
GEG
- SFO
1 stop14h 53m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:16 pm
SFO
- BOI
1 stop4h 30m
Delta
Mon 9/76:45 pm
BOI
- SFO
1 stop6h 12m
Delta
Deal found 6/6![Delta logo]()
$292
This Southwest deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:00 pm
SFO
- GEG
2 stops7h 10m
Southwest
Tue 8/2512:35 pm
GEG
- SFO
2 stops6h 30m
Southwest
Deal found 6/4![Southwest logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:29 pm
SFO
- GEG
Nonstop2h 07m
Alaska Airlines
Wed 8/192:02 pm
GEG
- SFO
Nonstop2h 17m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:50 am
SFO
- WYS
1 stop5h 38m
Delta
Mon 6/291:10 pm
WYS
- SFO
1 stop4h 16m
Delta
Deal found 6/2![Delta logo]()
$294
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:20 pm
SFO
- GEG
1 stop6h 40m
Southwest
Sun 8/302:50 pm
GEG
- SFO
2 stops7h 15m
Southwest
Deal found 6/2![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:35 am
SFO
- GEG
1 stop5h 12m
Delta
Thu 7/309:27 am
GEG
- SFO
1 stop7h 22m
Delta
Deal found 6/4![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:50 pm
SFO
- GEG
1 stop6h 00m
Southwest
Wed 7/155:00 am
GEG
- SFO
2 stops8h 40m
Southwest
Deal found 6/5![Southwest logo]()
$316
This Alaska Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Sun 9/610:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:50 am
SFO
- WYS
1 stop5h 36m
Delta
Fri 8/71:09 pm
WYS
- SFO
2 stops7h 21m
Delta
Deal found 6/7![Delta logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:10 pm
SFO
- JAC
Nonstop2h 20m
United Airlines
Thu 8/138:05 am
JAC
- SFO
1 stop7h 47m
United Airlines
Deal found 6/2![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:15 pm
SFO
- GEG
2 stops9h 15m
Southwest
Mon 7/135:25 am
GEG
- SFO
1 stop6h 35m
Southwest
Deal found 6/4![Southwest logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/297:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Thu 7/26:51 pm
BOI
- SFO
1 stop6h 06m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:07 pm
SFO
- IDA
1 stop4h 25m
Delta
Sun 7/127:00 pm
IDA
- SFO
1 stop5h 52m
Delta
Deal found 6/2![Delta logo]()
$336
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/264:00 pm
SFO
- BOI
1 stop7h 20m
Southwest
Sun 6/287:15 pm
BOI
- SFO
1 stop5h 15m
Southwest
Deal found 6/2![Southwest logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:23 pm
SFO
- GEG
2 stops10h 02m
Alaska Airlines
Sun 8/307:00 am
GEG
- SFO
1 stop4h 10m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$335
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/203:45 pm
SFO
- GEG
2 stops7h 55m
Southwest
Fri 7/245:30 pm
GEG
- SFO
2 stops7h 05m
Southwest
Deal found 6/3![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:26 pm
SFO
- JAC
Nonstop2h 13m
United Airlines
Tue 8/259:28 am
JAC
- SFO
Nonstop2h 29m
United Airlines
Deal found 6/2![United Airlines logo]()
$507
This Delta deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:05 pm
SFO
- IDA
1 stop4h 27m
Delta
Sat 7/257:00 pm
IDA
- SFO
1 stop5h 20m
Delta
Deal found 6/3![Delta logo]()
$361
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3012:10 pm
SFO
- GEG
2 stops10h 30m
Southwest
Mon 7/135:00 am
GEG
- SFO
2 stops8h 40m
Southwest
Deal found 6/6![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:10 pm
SFO
- JAC
Nonstop2h 20m
United Airlines
Sat 7/258:00 am
JAC
- SFO
Nonstop2h 26m
United Airlines
Deal found 6/3![United Airlines logo]()
$507
This Alaska Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/412:29 pm
SFO
- GEG
Nonstop2h 07m
Alaska Airlines
Mon 7/206:20 am
GEG
- SFO
1 stop5h 07m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:50 am
SFO
- WYS
1 stop3h 56m
Delta
Wed 6/241:10 pm
WYS
- SFO
2 stops9h 40m
Delta
Deal found 6/2![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:26 pm
SFO
- JAC
Nonstop2h 13m
United Airlines
Tue 9/19:28 am
JAC
- SFO
Nonstop2h 29m
United Airlines
Deal found 6/6![United Airlines logo]()
$507
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/74:00 pm
SFO
- BOI
2 stops6h 35m
Southwest
Sun 8/96:30 am
BOI
- SFO
2 stops6h 35m
Southwest
Deal found 6/6![Southwest logo]()
$347
Last-minute flights from San Francisco to IdahoDiscover last-minute flight deals from San Francisco to Idaho. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Idaho. Data last updated June 7, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/236:00 am
SFO
- BOI
1 stop5h 30m
Frontier
Tue 7/211:24 pm
BOI
- SFO
1 stop11h 59m
Frontier
Deal found 6/3![Frontier logo]()
$250
This Travelocity deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:25 pm
SFO
- BOI
Nonstop1h 42m
Multiple Airlines
Sun 6/281:25 pm
BOI
- SFO
1 stop23h 18m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$254
This Booking.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2412:38 pm
SFO
- BOI
1 stop22h 52m
Frontier
Sun 6/281:25 pm
BOI
- SFO
1 stop23h 18m
Frontier
Deal found 6/2![Frontier logo]()
$262
This Booking.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/112:38 pm
SFO
- BOI
1 stop22h 52m
Frontier
Tue 7/71:24 pm
BOI
- SFO
1 stop23h 03m
Frontier
Deal found 6/2![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:43 pm
SFO
- BOI
1 stop13h 46m
Multiple Airlines
Wed 7/88:03 am
BOI
- SFO
1 stop7h 48m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:00 pm
SFO
- IDA
1 stop18h 00m
Multiple Airlines
Mon 7/1310:47 pm
IDA
- SFO
1 stop17h 38m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$249
This Expedia deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
SFO
- BOI
1 stop5h 29m
Frontier
Tue 7/211:24 pm
BOI
- SFO
1 stop11h 59m
Frontier
Deal found 6/7![Frontier logo]()
$230
This Frontier deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
SFO
- BOI
1 stop5h 29m
Frontier
Thu 7/231:24 pm
BOI
- SFO
1 stop11h 59m
Frontier
Deal found 6/3![Frontier logo]()
$249
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:59 pm
SFO
- BOI
Nonstop1h 56m
United Airlines
Wed 7/227:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 6/3![United Airlines logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Tue 7/218:03 am
BOI
- SFO
1 stop7h 48m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:07 pm
SFO
- BOI
1 stop5h 58m
Delta
Wed 7/226:42 pm
BOI
- SFO
1 stop6h 10m
Delta
Deal found 6/3![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/152:55 pm
SFO
- BOI
2 stops8h 35m
Southwest
Wed 7/224:05 pm
BOI
- SFO
1 stop7h 25m
Southwest
Deal found 6/5![Southwest logo]()
$252
One-way flights from San Francisco to IdahoSearch for one-way flight options from San Francisco to Idaho. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
Search for one-way flight options from San Francisco to Idaho. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 pm
SFO
- BOI
Nonstop1h 46m
United Airlines
Deal found 6/3![United Airlines logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$114
This Frontier deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
SFO
- BOI
1 stop5h 29m
Frontier
Deal found 6/2![Frontier logo]()
$115
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:00 pm
SFO
- BOI
1 stop5h 40m
Southwest
Deal found 6/3![Southwest logo]()
$119
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/152:20 pm
SFO
- BOI
1 stop7h 35m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$124
This CheapOair deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:03 am
SFO
- GEG
1 stop4h 58m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/142:55 pm
SFO
- BOI
2 stops8h 35m
Southwest
Deal found 6/2![Southwest logo]()
$129
This Priceline deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/294:30 pm
SFO
- GEG
1 stop27h 31m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$130
This Priceline deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:00 am
SFO
- BOI
1 stop5h 29m
Frontier
Deal found 6/5![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:00 pm
SFO
- GEG
1 stop23h 01m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$134
This Frontier deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:00 am
SFO
- BOI
1 stop5h 29m
Frontier
Deal found 6/7![Frontier logo]()
$135
Find flight deals from San Francisco to Idaho
Keep the following information in mind while searching for San Francisco to Idaho flight deals. Data was last updated June 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Alaska Airlines) |
One-way from | $109 (United Airlines) |
Popular in | May |
Cheapest in | January |
Average price | $307 |
Good round-trip deal | $307 or less |
Good one-way deal | $158 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 June 7, 2026.
Use the filters below to find and compare flights from San Francisco to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Sat 9/5
7:46 pm-10:27 pm
Nonstop1h 41m
Boise Air Term. Gowen Fld
Sun 9/6
10:14 am-11:10 am
Nonstop1h 56m
$217
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Thu 8/27
3:51 pm-11:00 pm
1 stop6h 09m
Boise Air Term. Gowen Fld
Sun 8/30
10:14 am-11:10 am
Nonstop1h 56m
$232
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Sat 9/5
5:50 am-12:14 pm
1 stop5h 24m
Boise Air Term. Gowen Fld
Sun 9/6
6:00 am-8:46 am
1 stop3h 46m
$237
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Tue 8/11
7:55 am-11:07 pm
1 stop15h 12m
Spokane
Wed 8/12
8:15 am-11:08 pm
1 stop14h 53m
$255
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Mon 8/17
4:00 pm-11:35 pm
2 stops6h 35m
Boise Air Term. Gowen Fld
Fri 8/21
3:45 pm-8:30 pm
1 stop5h 45m
$263
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Thu 8/13
12:29 pm-2:36 pm
Nonstop2h 07m
Spokane
Wed 8/19
2:02 pm-4:19 pm
Nonstop2h 17m
$265
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Sat 9/5
5:16 pm-10:46 pm
1 stop4h 30m
Boise Air Term. Gowen Fld
Mon 9/7
6:45 pm-11:57 pm
1 stop6h 12m
$292
San FranciscoWest Yellowstone
SFO - WYS
SFOWYS
San Francisco
Wed 6/24
5:50 am-12:28 pm
1 stop5h 38m
West Yellowstone
Mon 6/29
1:10 pm-4:26 pm
1 stop4h 16m
$294
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Fri 8/21
3:00 pm-10:10 pm
2 stops7h 10m
Spokane
Tue 8/25
12:35 pm-7:05 pm
2 stops6h 30m
$297
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Thu 8/27
3:20 pm-10:00 pm
1 stop6h 40m
Spokane
Sun 8/30
2:50 pm-10:05 pm
2 stops7h 15m
$302
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Francisco to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from San Francisco with our price prediction graph.
SFO-BOI
SFO-GEG
SFO-IDA
SFO-WYS
SFO-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 San Francisco to Idaho
SFO-USID
SFO-BOI
SFO-GEG
SFO-IDA
SFO-WYS
What is the cheapest month to book a flight from San Francisco to Idaho?
Currently, August is the cheapest month in which you can book a flight from San Francisco to Idaho (average of $44). Flying from San Francisco to Idaho in November is currently the most expensive (average of $147). 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 SFO to ID?
Find hourly flight availability from San Francisco 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 June 7, 2026.
One of the essential ways to save on airfare from San Francisco to Idaho is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 30% on airfare.
Weekly flight availability from San Francisco to Idaho
Explore weekly flight availability from San Francisco 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 June 7, 2026.
The most flights from SFO to USID are scheduled on a Wednesday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).
How much does it cost to fly round-trip from San Francisco to Idaho?
How far ahead should I book a flight from San Francisco to Idaho?
Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from San Francisco to Idaho?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Idaho. Price data was last updated on May 30, 2026.
Travelers seeking maximum savings on their San Francisco to Idaho flight should consider departing on Saturday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 7, 2026.
Read through reviews of airlines operating flights from San Francisco to Idaho, such as Alaska Airlines,Delta, andHawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from San Francisco 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 Francisco 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 Francisco to Idaho by cabin class
Find flights from San Francisco to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Idaho flights
Browse other San Francisco and Idaho flight options. Last updated on June 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Francisco to Idaho flights
Consider these flights traveling from San Francisco to Idaho.
Top 4 airlines flying from San Francisco to Idaho
Discover the top 4 airlines that operate flights from San Francisco 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 June 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$215 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$128 | Average$326 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$131 | Average$445 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$214 | Average$518 | FlexibilityNo cancel fee | On-timeN/A |