$79+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOI
May 25 — Jun 11
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Francisco 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 San Francisco to Idaho
Cheapest
Best
Last-minute
One-way
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 April 25, 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 April 25, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Sat 5/166:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 4/24. 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.
Sat 5/165:40 am
SFO
- BOI
1 stop5h 31m
Delta
Wed 6/36:41 pm
BOI
- SFO
1 stop6h 46m
Delta
Deal found 4/24![Delta logo]()
$177
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:55 pm
SFO
- BOI
Nonstop1h 55m
United Airlines
Mon 8/177:01 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 4/21![United Airlines logo]()
$186
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:54 pm
SFO
- BOI
Nonstop1h 50m
United Airlines
Thu 6/47:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 4/23![United Airlines logo]()
$188
This Trip.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Sat 5/308:26 am
BOI
- SFO
1 stop9h 35m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$189
This Alaska Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:33 pm
SFO
- GEG
Nonstop2h 07m
Alaska Airlines
Wed 6/31:50 pm
GEG
- SFO
Nonstop2h 14m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 pm
SFO
- BOI
1 stop4h 04m
Delta
Sat 5/166:41 pm
BOI
- SFO
1 stop4h 46m
Delta
Deal found 4/22![Delta logo]()
$196
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/211:45 am
SFO
- BOI
1 stop8h 35m
Alaska Airlines
Sat 6/66:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$197
This CheapOair deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:44 pm
SFO
- BOI
Nonstop1h 43m
Alaska Airlines
Tue 5/129:02 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:40 am
SFO
- BOI
1 stop5h 16m
Delta
Thu 6/46:41 pm
BOI
- SFO
1 stop6h 16m
Delta
Deal found 4/22![Delta logo]()
$202
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/206:16 am
SFO
- GEG
1 stop15h 29m
Alaska Airlines
Sat 5/231:50 pm
GEG
- SFO
Nonstop2h 14m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$203
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:15 am
SFO
- BOI
Nonstop1h 53m
United Airlines
Wed 6/107:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 4/24![United Airlines logo]()
$204
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 April 25, 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 April 25, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:33 pm
SFO
- GEG
Nonstop2h 07m
Alaska Airlines
Wed 6/37:01 am
GEG
- SFO
1 stop27h 48m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$194
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:40 am
SFO
- BOI
1 stop5h 16m
Delta
Tue 6/96:42 pm
BOI
- SFO
1 stop6h 16m
Delta
Deal found 4/22![Delta logo]()
$202
This Southwest deal was found by Cheapflights users on 4/20. 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 5/201:45 pm
SFO
- GEG
2 stops9h 10m
Southwest
Sat 5/235:10 am
GEG
- SFO
2 stops7h 25m
Southwest
Deal found 4/20![Southwest logo]()
$286
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/168:59 pm
SFO
- BOI
Nonstop1h 56m
United Airlines
Sun 6/216:30 am
BOI
- SFO
Nonstop2h 00m
United Airlines
Deal found 4/24![United Airlines logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/273:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Sat 5/306:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/175:55 am
SFO
- GEG
1 stop4h 17m
Delta
Tue 5/195:37 pm
GEG
- SFO
1 stop6h 28m
Delta
Deal found 4/22![Delta logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 5/127:15 am
SFO
- BOI
1 stop13h 11m
Alaska Airlines
Mon 5/186:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:30 am
SFO
- BOI
1 stop11h 07m
Alaska Airlines
Thu 6/46:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 4/25. 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.
Thu 5/215:55 am
SFO
- GEG
1 stop4h 17m
Delta
Sun 5/245:37 pm
GEG
- SFO
1 stop6h 03m
Delta
Deal found 4/25![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 4/25. 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 5/253:40 pm
SFO
- GEG
2 stops8h 50m
Southwest
Sat 5/305:10 am
GEG
- SFO
2 stops7h 25m
Southwest
Deal found 4/25![Southwest logo]()
$298
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:15 pm
SFO
- BOI
1 stop5h 01m
United Airlines
Mon 5/186:23 am
BOI
- SFO
Nonstop2h 02m
United Airlines
Deal found 4/24![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:55 am
SFO
- BOI
1 stop15h 16m
Delta
Sun 6/76:00 am
BOI
- SFO
1 stop3h 56m
Delta
Deal found 4/22![Delta logo]()
$275
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/253:00 pm
SFO
- BOI
2 stops6h 55m
Southwest
Wed 6/35:00 pm
BOI
- SFO
2 stops7h 15m
Southwest
Deal found 4/24![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:30 am
SFO
- GEG
1 stop6h 50m
Southwest
Mon 6/156:05 pm
GEG
- SFO
1 stop6h 45m
Southwest
Deal found 4/20![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:00 am
SFO
- JAC
1 stop6h 48m
United Airlines
Fri 7/178:00 am
JAC
- SFO
Nonstop2h 26m
United Airlines
Deal found 4/20![United Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 4/21. 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.
Sat 5/305:40 am
SFO
- WYS
1 stop3h 58m
Delta
Tue 6/21:10 pm
WYS
- SFO
1 stop3h 54m
Delta
Deal found 4/21![Delta logo]()
$314
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:33 pm
SFO
- BOI
1 stop3h 55m
Alaska Airlines
Sat 5/237:00 am
BOI
- SFO
2 stops13h 20m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/113:15 pm
SFO
- GEG
2 stops8h 50m
Southwest
Sat 7/185:00 am
GEG
- SFO
1 stop4h 35m
Southwest
Deal found 4/23![Southwest logo]()
$318
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/236:00 am
SFO
- JAC
1 stop6h 48m
United Airlines
Tue 6/308:00 am
JAC
- SFO
1 stop5h 30m
United Airlines
Deal found 4/23![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
SFO
- GEG
1 stop6h 16m
Delta
Mon 7/135:37 pm
GEG
- SFO
1 stop6h 21m
Delta
Deal found 4/23![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 4/25. 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.
Wed 7/83:35 pm
SFO
- GEG
1 stop8h 30m
Southwest
Fri 7/105:30 pm
GEG
- SFO
2 stops7h 00m
Southwest
Deal found 4/25![Southwest logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:40 am
SFO
- IDA
1 stop4h 37m
Alaska Airlines
Wed 6/34:03 pm
IDA
- SFO
1 stop4h 53m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 4/21. 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.
Thu 5/71:35 pm
SFO
- GEG
1 stop5h 08m
Delta
Thu 5/145:00 am
GEG
- SFO
1 stop7h 29m
Delta
Deal found 4/21![Delta logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:20 am
SFO
- IDA
1 stop4h 46m
Alaska Airlines
Thu 8/134:14 pm
IDA
- SFO
1 stop4h 16m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:15 pm
SFO
- GEG
2 stops9h 10m
Southwest
Mon 7/135:25 am
GEG
- SFO
2 stops7h 35m
Southwest
Deal found 4/22![Southwest logo]()
$327
This United Airlines deal was found by Cheapflights users on 4/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:00 am
SFO
- JAC
1 stop6h 48m
United Airlines
Sat 6/68:00 am
JAC
- SFO
Nonstop2h 26m
United Airlines
Deal found 4/24![United Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:10 am
SFO
- BOI
2 stops6h 05m
Southwest
Wed 7/86:30 am
BOI
- SFO
2 stops8h 10m
Southwest
Deal found 4/22![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:40 am
SFO
- JAC
1 stop4h 08m
Delta
Fri 5/295:59 pm
JAC
- SFO
1 stop4h 31m
Delta
Deal found 4/23![Delta logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 5/1612:33 pm
SFO
- BOI
1 stop3h 55m
Alaska Airlines
Wed 5/2010:00 am
BOI
- SFO
2 stops12h 31m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$344
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Thu 6/256:00 am
SFO
- JAC
1 stop6h 48m
United Airlines
Mon 6/298:00 am
JAC
- SFO
Nonstop2h 26m
United Airlines
Deal found 4/20![United Airlines logo]()
$442
Last-minute flights from San Francisco to IdahoDiscover last-minute flight deals from San Francisco to Idaho. Data last updated April 25, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Idaho. Data last updated April 25, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:44 pm
SFO
- BOI
Nonstop1h 43m
Alaska Airlines
Tue 5/129:02 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$201
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:50 am
SFO
- GEG
Nonstop2h 26m
United Airlines
Wed 5/136:00 am
GEG
- SFO
Nonstop2h 28m
United Airlines
Deal found 4/21![United Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 pm
SFO
- BOI
1 stop4h 04m
Delta
Sat 5/166:41 pm
BOI
- SFO
1 stop4h 46m
Delta
Deal found 4/22![Delta logo]()
$196
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Sat 5/166:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 4/24. 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.
Sat 5/165:40 am
SFO
- BOI
1 stop5h 31m
Delta
Wed 6/36:41 pm
BOI
- SFO
1 stop6h 46m
Delta
Deal found 4/24![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:16 am
SFO
- GEG
1 stop15h 29m
Alaska Airlines
Tue 5/261:50 pm
GEG
- SFO
Nonstop2h 14m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$194
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/206:16 am
SFO
- GEG
1 stop15h 29m
Alaska Airlines
Sat 5/237:01 am
GEG
- SFO
1 stop15h 22m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$198
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:45 pm
SFO
- GEG
Nonstop2h 19m
United Airlines
Sat 5/3012:37 pm
GEG
- SFO
Nonstop2h 24m
United Airlines
Deal found 4/23![United Airlines logo]()
$207
This Trip.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Sat 5/308:26 am
BOI
- SFO
1 stop9h 35m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$189
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:54 pm
SFO
- BOI
Nonstop1h 50m
United Airlines
Mon 6/17:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 4/23![United Airlines logo]()
$188
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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.
Sat 5/303:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Sun 6/76:54 pm
BOI
- SFO
Nonstop1h 49m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:40 am
SFO
- BOI
1 stop5h 16m
Delta
Mon 6/86:42 pm
BOI
- SFO
1 stop4h 09m
Delta
Deal found 4/22![Delta logo]()
$202
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 April 25, 2026.
Search for one-way flight options from San Francisco to Idaho. Find affordable one-way fares based on user searches. Data last updated April 25, 2026.
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:30 pm
SFO
- BOI
Nonstop1h 56m
United Airlines
Deal found 4/21![United Airlines logo]()
$79
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:40 am
SFO
- BOI
1 stop5h 16m
Delta
Deal found 4/22![Delta logo]()
$89
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:50 am
SFO
- GEG
Nonstop2h 26m
United Airlines
Deal found 4/21![United Airlines logo]()
$95
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:44 pm
SFO
- BOI
Nonstop1h 43m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$98
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Tue 5/268:59 pm
SFO
- BOI
Nonstop1h 56m
United Airlines
Deal found 4/25![United Airlines logo]()
$99
This CheapOair deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:15 pm
SFO
- GEG
1 stop6h 37m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$99
This Alaska Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:05 pm
SFO
- BOI
Nonstop1h 38m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$104
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Sat 5/1612:10 pm
SFO
- GEG
Nonstop2h 21m
United Airlines
Deal found 4/20![United Airlines logo]()
$104
This Delta deal was found by Cheapflights users on 4/21. 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.
Wed 5/135:55 am
SFO
- GEG
1 stop6h 18m
Delta
Deal found 4/21![Delta logo]()
$105
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:55 pm
SFO
- BOI
1 stop6h 09m
Delta
Deal found 4/22![Delta logo]()
$108
This Southwest deal was found by Cheapflights users on 4/20. 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.
Sun 6/712:50 pm
SFO
- BOI
1 stop5h 55m
Southwest
Deal found 4/20![Southwest logo]()
$114
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:35 pm
SFO
- GEG
1 stop7h 38m
Delta
Deal found 4/20![Delta logo]()
$114
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 April 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $176 (Alaska Airlines) |
One-way from | $79 (United Airlines) |
Popular in | May |
Cheapest in | January |
Average price | $232 |
Good round-trip deal | $258 or less |
Good one-way deal | $133 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 April 25, 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
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Tue 6/2
12:33 pm-2:40 pm
Nonstop2h 07m
Spokane
Wed 6/3
7:01 am-10:49 am
1 stop27h 48m
$194
Quickest round-trip
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Wed 5/27
3:05 pm-5:43 pm
Nonstop1h 38m
Boise Air Term. Gowen Fld
Sat 5/30
6:54 pm-7:43 pm
Nonstop1h 49m
$201
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Sun 5/31
5:40 am-11:56 am
1 stop5h 16m
Boise Air Term. Gowen Fld
Tue 6/9
6:42 pm-11:58 pm
1 stop6h 16m
$202
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Tue 5/12
7:15 am-9:26 pm
1 stop13h 11m
Boise Air Term. Gowen Fld
Mon 5/18
6:54 pm-7:43 pm
Nonstop1h 49m
$222
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Mon 6/1
10:30 am-10:37 pm
1 stop11h 07m
Boise Air Term. Gowen Fld
Thu 6/4
6:54 pm-7:43 pm
Nonstop1h 49m
$229
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Sun 5/17
5:55 am-10:12 am
1 stop4h 17m
Spokane
Tue 5/19
5:37 pm-12:05 am
1 stop6h 28m
$238
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Thu 5/21
5:55 am-10:12 am
1 stop4h 17m
Spokane
Sun 5/24
5:37 pm-11:40 pm
1 stop6h 03m
$267
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Mon 6/1
5:55 am-10:11 pm
1 stop15h 16m
Boise Air Term. Gowen Fld
Sun 6/7
6:00 am-8:56 am
1 stop3h 56m
$275
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Wed 5/20
1:45 pm-10:55 pm
2 stops9h 10m
Spokane
Sat 5/23
5:10 am-12:35 pm
2 stops7h 25m
$286
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Mon 5/25
3:40 pm-12:30 am
2 stops8h 50m
Spokane
Sat 5/30
5:10 am-12:35 pm
2 stops7h 25m
$298
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-JAC
SFO-WYS
SFO-IDA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Idaho
SFO-USID
SFO-BOI
SFO-GEG
SFO-JAC
SFO-WYS
How far ahead should I book a flight from San Francisco to Idaho?
Booking 80 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 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 April 25, 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 34% on airfare.
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 April 25, 2026.
Travelers seeking maximum savings on their San Francisco to Idaho flight should consider departing on Tuesday at noon 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.
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 April 25, 2026.
The most flights from SFO to USID are scheduled on a Monday (16 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from San Francisco 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 April 25, 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.
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
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.
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 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 April 25, 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 April 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$215 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$129 | Average$452 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$134 | Average$466 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$136 | Average$340 | FlexibilityNo cancel fee | On-time75% |