Flights Boise → San Francisco
As of September 2026, economy flights from Boise to San Francisco have a typical range USD 467–1000, median USD 701. Full range across all 189 offers: USD 232–2223. We analyzed 189 offers from 12 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Boise → San Francisco
Based on 189 offers · September 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Boise → San Francisco
Add-on pricing from the cheapest available offer per airline · September 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| United | Included | USD 35 | — |
| Frontier Airlines | — | — | — |
| Alaska Airlines | Included | USD 35 | — |
| Air New Zealand | Included | USD 30 | — |
| Southwest Airlines | Included | Included | — |
| Delta | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| Qantas | Included | USD 35 | — |
| Qatar Airways | Included | Included | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Boise to San Francisco cost?
Based on 189 offers · September 2026
Boise to San Francisco flights ranged from USD 232 to USD 2223 across 189 offers analyzed in September 2026. The chart below shows how prices distributed across all 189 offers.
These 189 offers (September 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 544 and USD 807
What hidden fees do Boise to San Francisco flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Boise to San Francisco routes. The breakdown below is based on 189 offers analyzed in September 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| UA | 45 | 7% |
| F9 | 93 | 21% |
| AS | 35 | 5% |
| NZ | 42 | 6% |
| WN | 12 | 2% |
| DL | 31 | 3% |
| AA | 45 | 5% |
| QF | 50 | 6% |
| QR | 20 | 1% |
Frontier Airlines: base ~USD 399 + fees USD 93 = ~USD 492 total. Southwest Airlines: base ~USD 565 + fees USD 12 = ~USD 577 total.
Frontier Airlines's USD 93 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 166 base difference shrinks to USD 85 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Boise to San Francisco?
12 airlines flew Boise to San Francisco in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Frontier | 1 | — | 236 | n/a |
 Frontier Airlines | 5 | 260–596 | 492 | 93 (19%) |
 Alaska | 11 | 413–548 | 493 | n/a |
 Southwest | 1 | — | 515 | n/a |
 Southwest Airlines | 68 | 477–772 | 577 | 12 (2%) |
 Alaska Airlines | 44 | 609–930 | 749 | 35 (5%) |
 United Airlines | 11 | 308–901 | 764 | 45 (6%) |
 Air New Zealand | 9 | 352–946 | 798 | 42 (5%) |
 Qantas | 4 | 757–1071 | 818 | 50 (6%) |
 American Airlines | 9 | 749–1529 | 822 | 45 (5%) |
 Delta Air Lines | 25 | 679–1748 | 1040 | 31 (3%) |
 Qatar Airways | 1 | — | 2223 | 20 (1%) |
Where do the best Boise → San Francisco prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Boise to San Francisco flights
- Full-service carriers on Boise–San Francisco cost 2.1x more than budget airlines (USD 963 vs USD 455 median; overall median USD 701).
- F9 charges 7.8x more in ancillary fees than WN — USD 93 vs USD 12 avg per booking.
- The same route priced USD 229 apart depending on where it was booked — the lowest median was USD 546. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Boise to San Francisco cost?
- Based on 189 offers analyzed, Boise to San Francisco flights range from USD 232 to USD 2223, with a median price of USD 701. Search for your specific dates →
- What hidden fees should I expect on Boise to San Francisco flights?
- On average, ancillary fees (bags, seat selection) add USD 29 to the base fare on Boise to San Francisco flights. See itemized fees for your itinerary →
- Which airline is cheapest on Boise to San Francisco including all fees?
- Frontier has the lowest median fare on Boise to San Francisco at USD 236 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Boise–San Francisco flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 546. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Boise to San Francisco routes?
- Boise to San Francisco has 12 airlines competing, creating a price range from USD 232 to USD 2223 across 189 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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