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Find cheap United Airlines flights to Boise

CMH — BOI
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to Boise

Cheapest United Airlines flights from USA to Boise
Explore the most affordable United Airlines flight options available from USA to Boise. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:32 pm
DEN
-
BOI
Nonstop2h 08m
United Airlines
Sat 8/225:00 am
BOI
-
DEN
Nonstop2h 10m
United Airlines
Deal found 7/24$197
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:00 am
ONT
-
BOI
1 stop6h 31m
United Airlines
Tue 9/18:15 am
BOI
-
ONT
1 stop4h 57m
United Airlines
Deal found 7/26$197
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:30 pm
SFO
-
BOI
Nonstop1h 54m
United Airlines
Wed 9/27:05 pm
BOI
-
SFO
Nonstop1h 53m
United Airlines
Deal found 7/27$207

Flights to Boise with United Airlines at a glance

Find detailed information about United Airlines flights from USA to Boise. Explore the options provided by United Airlines to plan your journey from USA to Boise. Data last updated July 27, 2026.

Popular in

June

Cheapest in

January

Average price

$385

Round-trip from

$197

One-way from

$99

Good one-way deal

$505 or less
Highest demand for flights to Boise with United Airlines; 9% potential price increase.
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Best time to find cheap flights to Boise with United Airlines; 1% potential price drop.
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Average price for flights to Boise with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 8/19-8/22
  • Nonstop
  • 4h 18m total
  • USA to Boise
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United Airlines
  • United Airlines
  • 8/19
  • Nonstop
  • 1h 55m total
  • USA to Boise
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Price to beat on a one-way flight from the United States to Boise with United Airlines.
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Cheapflights Insights

Find cheap United Airlines flights to Boise

How long is the flight to Boise with United Airlines?

On average, United Airlines flights from the United States to Boise take 3 hours 21 minutes. Flights to Boise from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

United Airlines weekly flight availability to Boise

The most flights to Boise operated by United Airlines are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

When is the best time to book a flight to Boise with United Airlines?

The best time to book a flight to Boise with United Airlines is 48 days before departure. On average, fares are higher if you book 4 days before departure.

When is the cheapest time to fly to Boise with United Airlines?

Users looking for the cheapest United Airlines fares to Boise should consider flying on Thursday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday evenings, when prices are usually at their highest.

FAQs about flights to Boise with United Airlines

  • Which airport do United Airlines flights arrive at when travelling to Boise?

    United Airlines flights on this route tend to land at Boise Air Term. Gowen Fld Airport.

  • Is United Airlines the cheapest airline for a flight to Boise?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Boise tends to be with Frontier.

  • Are there alternative airlines other than United Airlines that fly to Boise?

    Alaska Airlines, Delta and American Airlines all fly to Boise and offer an alternative to United Airlines.

  • How much is a flight to Boise with United Airlines?

    The average price for a return flight with United Airlines is $478; with a one-way flight around $311.

See more FAQs

Reviews of United Airlines

See what Cheapflights users have to say about their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Popular United Airlines flights

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