San Francisco to Idaho Falls flights

Routavio compares airline fares from several flight booking sites. Search San Francisco to Idaho Falls to see the lowest price before you book.

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Fare seen

€148Seen on 18 Sep 2026

Last checked

11 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €80

Lowest observed

2 Dec 2026

Allegiant Air · 1 stop · One way

Cheapest observed day · Last checked: 18 Sep 2026

Departure

18:30

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Airlines seen: Alaska Airlines, Allegiant Air, Flair Airlines, Frontier Airlines, United Airlines, WestJet
Typical journey time: 6h 46m

Short answer

Routavio has seen Alaska Airlines fares from San Francisco to Idaho Falls. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare. Fare seen: €148 on 18 Sep 2026.

About this route

Explore the fares we observed from San Francisco to Idaho Falls. Prices move often, so pick your dates to see the latest options.

Route distance: 1,081 km
Typical journey time: 6h 46m
Airlines seen: Alaska Airlines, Allegiant Air, Flair Airlines, Frontier Airlines, United Airlines, WestJet
Seen on fares with a connection: Alaska Airlines, Frontier Airlines, Allegiant Air, United Airlines

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

A clearer picture of your fare

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Airport to city: straight-line distance

San Francisco International Airport (SFO) → San Francisco, city gazetteer reference point (37.7749, -122.4194): ≈ 18 km.
Idaho Falls Regional Airport (IDA) → Idaho Falls, city gazetteer reference point (43.4927, -112.0408): ≈ 3 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much was a flight from San Francisco to Idaho Falls?

A fare of €148 was seen on 18 Sep 2026. Fares change, so search your dates for the current price.

Are there direct flights from San Francisco to Idaho Falls?

Our data holds no non-stop flight from San Francisco to Idaho Falls. The fares on this page include at least one stop.

Which airlines fly from San Francisco to Idaho Falls?

These are the carriers we have seen on the route: Alaska Airlines, Allegiant Air, Flair Airlines, Frontier Airlines, United Airlines, WestJet.

How long does the flight from San Francisco to Idaho Falls take?

The average journey time across the 79 fares we observed is 11h 53m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed San Francisco to Idaho Falls fares were non-stop?

None of the 79 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide