Frontier AirlinesDepart14:49
Thu, Nov 12BOI → PDX
4h 26m · 1 stop
$136one way, per person
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- Cheapest fare
- $136
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 4h 26m
Frontier Airlines · Thu, Nov 12
from $136
Usually 1+ stop
550 km
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Cheapest month to fly from Boise to Portland
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Frontier Airlines
Southwest AirlinesDepart06:35
Fri, Nov 13BOI → PDX
4h 50m · 1 stop
$270one way, per person
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About flights from Boise to Portland
Boise (BOI) and Portland (PDX) are about 550 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 4h 26m. Over the next few months, one-way fares start from $136, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Boise to Portland?
The cheapest one-way fare we've seen recently is $136 with Frontier Airlines, departing Thursday, November 12, 2026.
What is the cheapest month to fly from Boise to Portland?
November 2026 currently has the lowest fares, from $136 one way.
Are there direct flights from Boise to Portland?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Boise to Portland?
The quickest journey we've seen takes about 4h 26m. Boise and Portland are around 550 km apart.
Which airlines fly from Boise to Portland?
Recent fares on this route were with Frontier Airlines and Southwest Airlines.
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