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- Boise (BOI) to Las Vegas (LAS).Southwest Airlines, nonstop.Departing on Wed, Dec 31 at 5:50pm from Boise, arriving at 6:40pm in Las Vegas.Returning on Sun, Jan 4 at 10:40pm from Las Vegas, arriving on Mon, Jan 5 at 1:25am in Boise.Select Southwest Airlines flight departing on Wed, Dec 31 at 5:50pm from Boise, returning on Sun, Jan 4 at 10:40pm from Las Vegas priced at $21745% less than typical$217
- Boise (BOI) to Las Vegas (LAS).Alaska Airlines, nonstop.Departing on Wed, Dec 24 at 9:00am from Boise, arriving at 9:54am in Las Vegas.Returning on Tue, Dec 30 at 7:10pm from Las Vegas, arriving on Wed, Dec 31 at 12:19am in Boise.Select Alaska Airlines flight departing on Wed, Dec 24 at 9:00am from Boise, returning on Tue, Dec 30 at 7:10pm from Las Vegas priced at $26835% less than typical$268
- Boise (BOI) to Las Vegas (LAS).Southwest Airlines, nonstop.Departing on Wed, Dec 31 at 5:50pm from Boise, arriving at 6:40pm in Las Vegas.Returning on Sat, Jan 3 at 10:55pm from Las Vegas, arriving on Sun, Jan 4 at 1:40am in Boise.Select Southwest Airlines flight departing on Wed, Dec 31 at 5:50pm from Boise, returning on Sat, Jan 3 at 10:55pm from Las Vegas priced at $21740% less than typical$217
- Boise (BOI) to Phoenix (PHX).Alaska Airlines, nonstop.Departing on Mon, Dec 22 at 6:45pm from Boise, arriving at 8:56pm in Phoenix.Returning on Mon, Dec 29 at 6:35am from Phoenix, arriving at 12:02pm in Boise.Select Alaska Airlines flight departing on Mon, Dec 22 at 6:45pm from Boise, returning on Mon, Dec 29 at 6:35am from Phoenix priced at $30030% less than typical$300
- Boise (BOI) to Seattle (SEA).Delta, nonstop.Departing on Wed, Dec 24 at 3:30pm from Boise, arriving at 4:20pm in Seattle.Returning on Sun, Dec 28 at 9:35pm from Seattle, arriving on Mon, Dec 29 at 12:04am in Boise.Select Delta flight departing on Wed, Dec 24 at 3:30pm from Boise, returning on Sun, Dec 28 at 9:35pm from Seattle priced at $23745% less than typical$237
- Boise (BOI) to Seattle (SEA).Delta, nonstop.Departing on Mon, Dec 22 at 3:30pm from Boise, arriving at 4:20pm in Seattle.Returning on Sun, Dec 28 at 9:35pm from Seattle, arriving on Mon, Dec 29 at 12:04am in Boise.Select Delta flight departing on Mon, Dec 22 at 3:30pm from Boise, returning on Sun, Dec 28 at 9:35pm from Seattle priced at $23740% less than typical$237
- Boise (BOI) to Seattle (SEA).Alaska Airlines, nonstop.Departing on Wed, Dec 31 at 11:58am from Boise, arriving at 12:37pm in Seattle.Returning on Sun, Jan 4 at 9:15pm from Seattle, arriving at 11:37pm in Boise.Select Alaska Airlines flight departing on Wed, Dec 31 at 11:58am from Boise, returning on Sun, Jan 4 at 9:15pm from Seattle priced at $21745% less than typical$217
- Boise (BOI) to Ontario (ONT).Alaska Airlines, nonstop.Departing on Sat, Jan 17 at 6:09pm from Boise, arriving at 7:16pm in Ontario.Returning on Sat, Jan 24 at 7:56pm from Ontario, arriving at 10:57pm in Boise.Select Alaska Airlines flight departing on Sat, Jan 17 at 6:09pm from Boise, returning on Sat, Jan 24 at 7:56pm from Ontario priced at $13755% less than typical$137
- Boise (BOI) to Ontario (ONT).Alaska Airlines, nonstop.Departing on Fri, Jan 16 at 6:09pm from Boise, arriving at 7:16pm in Ontario.Returning on Mon, Jan 19 at 7:56pm from Ontario, arriving at 10:57pm in Boise.Select Alaska Airlines flight departing on Fri, Jan 16 at 6:09pm from Boise, returning on Mon, Jan 19 at 7:56pm from Ontario priced at $19740% less than typical$197
Cheapest flights from Southwest Idaho
These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Flights from Southwest Idaho: Essential Travel Information
Cheapest flight from Southwest Idaho | $66 (roundtrip) |
|---|---|
Best airlines to fly from Southwest Idaho | Frontier Airlines, Breeze Airways, Southwest Airlines, Alaska Airlines, American Airlines, Delta |
Cheapest month to fly from Southwest Idaho | January |
Southwest Idaho IATA code | BOI |
Southwest Idaho Country/State | Idaho |
Airline ticket deals from Southwest Idaho | $66 - $158 |
How to Find Cheap Flights from Southwest Idaho, ID
How much is a flight from Southwest Idaho?
This week, flights from Southwest Idaho are available between $66 – $158.
How to find cheap flights from Southwest Idaho?
Expedia makes it easy to compare cheap flights from Southwest Idaho to many destinations. Check out excellent deals on domestic and international flights from Southwest Idaho. Once you select an offer, use our filters and sort by “Price (Lowest)” to see some of the cheapest and suitable options.
How can I get the best deal on flights from Southwest Idaho?
On Expedia, you have some of best airline ticket deals at your fingertips. Whether it’s a beach escape with your partner, a family vacation with your kids, or business trip with colleagues, these low airline ticket prices mean more savings for you. An excellent strategy for finding some of the best deals on flights from Southwest Idaho is to be flexible with your dates. Within each offer, you can compare prices for similar timeframes using our “Show flexible dates” feature. Depending on your destination, direct flights from Southwest Idaho may be more expensive. Airlines with strict bag policies or fees can also impact your costs.
What is the best airline to fly from Southwest Idaho?
At Expedia, we give you all the available options from our reputable partners. Select the airline that best suits your preferences and membership loyalties. You can fly from Southwest Idaho with: Frontier Airlines, Breeze Airways, Southwest Airlines, Alaska Airlines, American Airlines, Delta.
What is the best month to fly from Southwest Idaho?
One of the cheapest times to fly from Southwest Idaho airport(s) is January, based on the current list of flights available now. Prices on plane tickets vary considerably throughout the year due to availability and seasonal demand.
Are there any last-minute flights from Southwest Idaho?
Expedia is the place to find last-minute flights from Southwest Idaho, making it easy for you to compare prices on flights in the near future for different combinations of travel dates and from multiple airlines. We source some of the best deals for you and display some of the best offers available over the next 2 weeks.
Why book your ticket with Expedia?
Booking flights from Southwest Idaho with Expedia is the obvious choice to get low prices, save money, and see more value from every dollar spent. We show you some of the best deals happening right now and provide a vast inventory of airlines and flight routes to choose from, so you can find some of the cheapest flights from Southwest Idaho. You can customize your journey to your timeline, route preferences, budget, rewards programs, and more.
Can I change/cancel my flight?
Some flights can be changed or canceled, but fees and refunds will depend on the unique terms of your flight agreement. Airlines have different rules and restrictions for exchanging or refunding flights. For more information, go to your itinerary or visit our customer service portal. We recommend choosing flights with no change fees for the most flexibility. Filter by “Flexible change policies” to see flights with no change fees.
*Data specialists from both ARC and Expedia Group analysed ARC's global flight data to distil actionable information to help people save money on travel. While it's impossible to guarantee when to find the lowest prices, after examining the variables, we were able to observe trends. Analysis based on ARC, round-trip flight data between 1 October 2017 - 30 September 2018 for Economy and Premium cabin ATPs on a global basis.
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