Cheap flights from Boise to Chicago

One-way fares from $147 · BOI → CHI · prices found by travellers in the last 48 hours

Compare all dates Chicago → Boise
Cheapest fare
$147

Alaska Airlines · Thu, Dec 24

Cheapest month
December

from $147

Direct flights
Not recently

Usually 1+ stop

Quickest trip
5h 38m

2,330 km

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Cheapest month to fly from Boise to Chicago

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $195
  2. December 2026 Cheapest $147

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

Alaska Airlines
Depart08:20 Thu, Dec 24BOI → ORD 7h 45m · 2 stops
$147one way, per person
View deal
See every date in December 2026 →

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About flights from Boise to Chicago

Boise (BOI) and Chicago (CHI) are about 2,330 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 5h 38m. Over the next few months, one-way fares start from $147, and December 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 Chicago?

The cheapest one-way fare we've seen recently is $147 with Alaska Airlines, departing Thursday, December 24, 2026. Over the coming months, the lowest fare in each month ranges from $147 to $195.

What is the cheapest month to fly from Boise to Chicago?

December 2026 currently has the lowest fares, from $147 one way.

Are there direct flights from Boise to Chicago?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Boise to Chicago?

The quickest journey we've seen takes about 5h 38m. Boise and Chicago are around 2,330 km apart.

Which airlines fly from Boise to Chicago?

Recent fares on this route were with Frontier Airlines and Alaska Airlines.

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