Cheapest€98.67
- Alaska Airlines AA967306:302h 6m08:36San Diego SANBoise BOI
Door to door 5h 16mCO2 307.7 kgChanges 0Fixed, no changes
San Diego to Boise flight
Flights from San Diego to Boise start at €103.39 and take 5h 9m at their fastest.
Check dates and fares
Fares and seats move by the day. Price San Diego to Boise on the date you actually want, rather than on the date this page was built.
The Flights from San Diego to Boise starts at €103.39 and takes 5h 9m door to door, run by 4 operators over 1,251 km, with around 16 departures a day. Fares bottom out about 45 days before departure.
- 5h 9mDoor to door
- 1h 59mMoving
- €103.39 to €247.35From
- 06:16 to 18:39First and last departure
- 16Per day
- 307.7 kgCO2
First and last are taken from the services we sell on October 6, 2026. The return direction keeps its own timetable and is not these times reversed.
€103.39 to €247.35 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €205.46Wed16
- about €247.35Thu17
- about €187.17Fri18
- about €193.66Sat19
- about €175.96Sun20
- about €163.57Mon21
- about €125.81Tue22
- about €133.48Wed23
- about €170.06Thu24
- about €150.59Fri25
- about €156.49Sat26
- about €147.05Sun27
- about €131.12Mon28
- about €103.39Tue29
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on October 6, 2026
Fastest€128.17
- Alaska Airlines AA415710:431h 59m12:42San Diego SANBoise BOI
Door to door 5h 9mCO2 307.7 kgChanges 0Fixed, no changes
Airlines
| Operator | From | Fastest |
|---|---|---|
 Alaska Airlines | €98.67 | 5h 9m |
 SkyWest | €103.39 | 5h 9m |
 Horizon Air | €104.57 | 5h 9m |
 Southwest Airlines | €103.39 | 5h 10m |
The flight gets you into Boise. It does not get you a bed, and neither do we.
A room in Boise for the night the flight gets in
Sort by distance from Boise Union Pacific Depot and you can see which places are ten minutes on foot and which are not.
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When to book San Diego to Boise
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €100.4490 days
- €99.2660 days
- €96.5945 days
- €111.0630 days
- €98.6721 days
- €103.3914 days
- €125.817 days
- €187.173 days
- €205.461 days
- Cheapest lead time
- Fares bottom out around 45 days ahead, at €96.59.
- How much it moves
- The gap between the cheapest and most expensive lead time is 113 percent. The most expensive point is €205.46, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 45 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €147.05Sun
- €131.12Mon
- €103.39Tue
- €133.48Wed
- €170.06Thu
- €150.59Fri
- €156.49Sat
Where you leave from and where you arrive
San Diego
Air
- SAN
Boise
Air
- BOI
What the journey actually looks like
- Direct or connecting
- 80% of the services we sell on this corridor run through without a change. The remaining 20% involve one connection.
- How far it really runs
- The route covers 1,251 km against 1,215 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Santa Ana, Ontario, San Bernardino, Los Angeles. The gap between arriving and leaving is 57 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 17 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves San Diego at 06:16 and the last at 18:39, across 16 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about San Diego to Boise
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from San Diego to Boise take?
The Flight from San Diego to Boise takes 5h 9m door to door, of which 1h 59m is spent moving. The route runs 1,251 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from San Diego to Boise cost?
The Flight from San Diego to Boise starts at €103.39 for one passenger, as of September 15, 2026. A typical fare is €123.16. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from San Diego to Boise?
4 operators run the Flight from San Diego to Boise: Alaska Airlines, SkyWest, Horizon Air, Southwest Airlines. Between them they file around 16 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from San Diego to Boise use?
The Flight from San Diego to Boise leaves from San Diego SAN and arrives at Boise BOI. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from San Diego to Boise?
Fares for the Flight from San Diego to Boise bottom out around 45 days ahead, at €96.59. The gap between the cheapest and most expensive lead time across the window is 113 percent, measured on September 15, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from San Diego to Boise produce?
The Flight from San Diego to Boise produces about 307.7 kg of CO2 per passenger over 1251 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for San Diego to Boise on September 15, 2026: 1251 km of route against 1215 km in a straight line, 16 services a day, 4 operators a cheapest fare of €103.39, and 5h 9m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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