Chicago to Boise: buy now or wait?
Buy now FareScore 80/100
usually $239 $215 ≈ €191 Today's best fare
Cheaper than 80% of what we have seen
13 Nov Alaska Airlines With a stop
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All fares Chicago → Boise
Cheapest first. Every price is live and goes straight to booking.
12 Nov
13:00
Alaska Airlines · 9h 24m
With a stop
€191
13 Nov
21:59
Alaska Airlines · 8h 50m
With a stop
€191
10 Nov
20:07
Alaska Airlines · 6h 59m
With a stop
€193
5 Nov
21:59
Alaska Airlines · 7h 21m
With a stop
€218
10 Nov
12:05
Southwest Airlines · 5h 55m
With a stop
€234
5 Nov
16:05
Southwest Airlines · 7h 00m
Direct
€251
What the history says
Prices recorded 19
Typical price €212
Lowest we saw €191
You save today €21
Based on 19 prices we recorded on this exact route, compared against every month we have on record.
Best booking window
0–13 days — is when this route has been cheapest to book: €226 typical, on 18 observations.
Cheapest months to fly to Boise
November €226 18 observations
Booking tips from our fare data
- How far in advance should you book a flight?
- Book 1–1.5 months before departure. Tracking the same flights at every lead time (94,914 flights on 19,442 routes, 2026-06-14 to 2026-11-04), that window had the smallest average premium over each flight's lowest fare: +16.8%, against +49.3% in the last 3 days.
- What is the cheapest day of the week to fly?
- Wednesday. Comparing each fare with the median of its own route, Wednesday departures were +3.4% and Tuesday +4.2%, while Friday was the dearest at +10.6%. Weekend departures cost more than midweek ones.
- What is the cheapest month to fly?
- November 2026. Comparing each route's fares month by month (booked 8–60 days ahead), November 2026 departures were -1.1% against the route's own median, while January 2027 was the dearest at +17.5%. Covers September 2026, October 2026, November 2026, December 2026, January 2027; fares observed 2026-06-14 to 2026-11-04.
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