Cheapest€49.70
- SkyWest SW938117:191h 12m18:31Portland PDXBoise BOI
Door to door 4h 22mCO2 140.5 kgChanges 0Fixed, no changes
Portland to Boise flight
Flights from Portland to Boise start at €60.91 and take 4h 19m at their fastest.
Check dates and fares
Fares and seats move by the day. Price Portland to Boise on the date you actually want, rather than on the date this page was built.
The Flights from Portland to Boise starts at €60.91 and takes 4h 19m door to door, run by 3 operators over 571 km, with around 20 departures a day. Fares bottom out about 21 days before departure.
- 4h 19mDoor to door
- 1h 9mMoving
- €60.91 to €118.73From
- 06:27 to 20:05First and last departure
- 20Per day
- 140.5 kgCO2
First and last are taken from the services we sell on 5 October 2026. The return direction keeps its own timetable and is not these times reversed.
€60.91 to €118.73 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 €109.29Wed16
- about €118.73Thu17
- about €109.29Fri18
- about €93.36Sat19
- about €85.10Sun20
- about €75.07Mon21
- about €73.30Tue22
- about €70.94Wed23
- about €81.56Thu24
- about €75.07Fri25
- about €79.20Sat26
- about €70.94Sun27
- about €62.68Mon28
- about €60.91Tue29
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 5 October 2026
Fastest€59.73
- SkyWest SW606709:041h 9m10:13Portland PDXBoise BOI
Door to door 4h 19mCO2 140.5 kgChanges 0Fixed, no changes
Airlines
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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Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Portland to Boise
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €51.4790 days
- €50.2960 days
- €54.4245 days
- €56.7830 days
- €49.7021 days
- €60.9114 days
- €73.307 days
- €109.293 days
- €109.291 days
- Cheapest lead time
- Fares bottom out around 21 days ahead, at €49.70.
- How much it moves
- The gap between the cheapest and dearest lead time is 120 percent. The dearest point is €109.29, 3 days out.
- What that means
- Today sits inside the cheap window, which closes about 21 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.
- €70.94Sun
- €62.68Mon
- €60.91Tue
- €70.94Wed
- €81.56Thu
- €75.07Fri
- €79.20Sat
Where you leave from and where you arrive
Portland
Air
- PDX
Boise
Air
- BOI
What the journey actually looks like
- Direct or connecting
- 90% of the services we sell on this corridor run through without a change. The remaining 10% involve one connection.
- How far it really runs
- The route covers 571 km against 555 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 Spokane, Seattle. The gap between arriving and leaving is 57 minutes, of which about 5 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 Portland at 06:27 and the last at 20:05, across 20 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Portland to Boise
The questions people actually ask about this journey, 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 Portland to Boise take?
The Flight from Portland to Boise takes 4h 19m door to door, of which 1h 9m is spent moving. The route runs 571 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 Portland to Boise cost?
The Flight from Portland to Boise starts at €60.91 for one passenger, as of 15 September 2026. A typical fare is €58.55. 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 Portland to Boise?
3 operators run the Flight from Portland to Boise: Alaska Airlines, SkyWest, Horizon Air. Between them they file around 20 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 Portland to Boise use?
The Flight from Portland to Boise leaves from Portland PDX 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 Portland to Boise?
Fares for the Flight from Portland to Boise bottom out around 21 days ahead, at €49.70. The gap between the cheapest and dearest lead time across the window is 120 percent, measured on 15 September 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Portland to Boise produce?
The Flight from Portland to Boise produces about 140.5 kg of CO2 per passenger over 571 km, which works out at roughly 246 grams per passenger kilometre. That figure is for the whole journey and for one traveller, 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 Portland to Boise on 15 September 2026: 571 km of route against 555 km in a straight line, 20 services a day, 3 operators a cheapest fare of €60.91, and 4h 19m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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