Flights San Francisco → Idaho Falls
As of November 2026, economy flights from San Francisco to Idaho Falls have a typical range USD 937–2057, median USD 1359. Full range across all 299 offers: USD 761–5474. We analyzed 299 offers from 6 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: San Francisco → Idaho Falls
Based on 299 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: San Francisco → Idaho Falls
Add-on pricing from the cheapest available offer per airline · November 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Delta | — | USD 90 | — |
| Delta | Included | USD 35 | — |
| Alaska | — | USD 90 | — |
| Alaska Airlines | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| United | Included | USD 35 | — |
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 San Francisco to Idaho Falls cost?
Based on 299 offers · November 2026
San Francisco to Idaho Falls flights ranged from USD 761 to USD 5474 across 299 offers analyzed in November 2026. The chart below shows how prices distributed across all 299 offers.
These 299 offers (November 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 1112 and USD 1625
What hidden fees do San Francisco to Idaho Falls flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on San Francisco to Idaho Falls routes. The breakdown below is based on 299 offers analyzed in November 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| Delta | 90 | 10% |
| DL | 39 | 3% |
| Alaska | 98 | 10% |
| AS | 34 | 3% |
| AA | 47 | 3% |
| UA | 40 | 2% |
Alaska: base ~USD 885 + fees USD 98 = ~USD 983 total. Alaska Airlines: base ~USD 1212 + fees USD 34 = ~USD 1246 total.
Alaska's USD 98 ancillary fees narrow the gap with Alaska Airlines's lower-fee model — the USD 327 base difference shrinks to USD 263 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 San Francisco to Idaho Falls?
6 airlines flew San Francisco to Idaho Falls 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.
Even on the cheapest airline (Delta), fares ranged USD 785–985 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Delta | 14 | 785–985 | 895 | 90 (10%) |
 Alaska | 12 | 878–1010 | 983 | 98 (10%) |
 Delta Air Lines | 92 | 924–2020 | 1235 | 39 (3%) |
 Alaska Airlines | 64 | 971–1550 | 1246 | 34 (3%) |
 American Airlines | 28 | 1096–1673 | 1315 | 47 (4%) |
 United Airlines | 89 | 1366–2738 | 1701 | 40 (2%) |
Where do the best San Francisco → Idaho Falls prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from travel agency 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: San Francisco to Idaho Falls flights
- San Francisco–Idaho Falls had 299 offers analyzed. Median price: USD 1359.
- Alaska charges 2.9x more in ancillary fees than AS — USD 98 vs USD 34 avg per booking.
- The same route priced USD 467 apart depending on where it was booked — the lowest median was USD 952. 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 San Francisco to Idaho Falls cost?
- Based on 299 offers analyzed, San Francisco to Idaho Falls flights range from USD 761 to USD 5474, with a median price of USD 1359. Search for your specific dates →
- What hidden fees should I expect on San Francisco to Idaho Falls flights?
- On average, ancillary fees (bags, seat selection) add USD 44 to the base fare on San Francisco to Idaho Falls flights. See itemized fees for your itinerary →
- Which airline is cheapest on San Francisco to Idaho Falls including all fees?
- Delta has the lowest median fare on San Francisco to Idaho Falls at USD 895 (median across 14 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest San Francisco–Idaho Falls 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 952. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on San Francisco to Idaho Falls routes?
- San Francisco to Idaho Falls has 6 airlines competing, creating a price range from USD 761 to USD 5474 across 299 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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