$150 Cheap Flights from Baltimore (BWI) to Boise (BOI)

View $150 flight on Fri, Feb 20, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Boise Airport (BOI)

Cheap Flights from Baltimore to Boise (BWI-BOI)

Prices were available within the past 7 days and start at $150 for one-way flights and $283 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Nov 24 - Mon, Nov 24
BWI
Baltimore
BOI
Boise
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Mon, Nov 24 from Baltimore to Boise, returning Mon, Nov 24, priced at $283 found 4 days ago
United
Mon, Nov 24 - Mon, Nov 24
BWI
Baltimore
BOI
Boise
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 24 from Baltimore to Boise, returning Mon, Nov 24, priced at $284 found 4 days ago
Alaska Airlines
Mon, Nov 24 - Mon, Nov 24
BWI
Baltimore
BOI
Boise
$289 Roundtrip, found 4 days ago
$289
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Mon, Nov 24 from Baltimore to Boise, returning Mon, Nov 24, priced at $289 found 4 days ago
Bargain Flight
Tue, Nov 18 - Mon, Nov 24
BWI
Baltimore
BOI
Boise
$296 Roundtrip, found 3 days ago
$296
Roundtrip
found 3 days ago
Select Bargain Flight flight, departing Tue, Nov 18 from Baltimore to Boise, returning Mon, Nov 24, priced at $296 found 3 days ago
Alaska Airlines
Tue, Nov 18 - Mon, Nov 24
BWI
Baltimore
BOI
Boise
$297 Roundtrip, found 3 days ago
$297
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Nov 18 from Baltimore to Boise, returning Mon, Nov 24, priced at $297 found 3 days ago
American Airlines
Wed, Jan 14 - Sun, Jan 18
BWI
Baltimore
BOI
Boise
$300 Roundtrip, found 5 days ago
$300
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jan 14 from Baltimore to Boise, returning Sun, Jan 18, priced at $300 found 5 days ago
United
Tue, Nov 18 - Mon, Nov 24
BWI
Baltimore
BOI
Boise
$303 Roundtrip, found 3 days ago
$303
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 18 from Baltimore to Boise, returning Mon, Nov 24, priced at $303 found 3 days ago
United
Wed, Jan 14 - Sun, Jan 18
BWI
Baltimore
BOI
Boise
$305 Roundtrip, found 5 days ago
$305
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jan 14 from Baltimore to Boise, returning Sun, Jan 18, priced at $305 found 5 days ago
Alaska Airlines
Tue, Dec 9 - Wed, Dec 10
BWI
Baltimore
BOI
Boise
$306 Roundtrip, found 1 day ago
$306
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Baltimore to Boise, returning Wed, Dec 10, priced at $306 found 1 day ago
Southwest Airlines
Wed, Feb 4 - Sat, Feb 7
BWI
Baltimore
BOI
Boise
$307 Roundtrip, found 1 day ago
$307
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Feb 4 from Baltimore to Boise, returning Sat, Feb 7, priced at $307 found 1 day ago

Find the cheapest month to fly from Baltimore (BWI) to Boise (BOI)

February is typically the cheapest month to fly

From $188 - $735 per traveler.

Alternative airports near Boise

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $556
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $556
Flights from Baltimore (BWI) to Boise (BOI)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$282
Distance
2053 mi

Baltimore to Boise Flights

The cheapest times to fly from Baltimore to Boise

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Boise are during the month of November. You can find some of the cheapest flights from Baltimore to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Boise

Sunday is one of the best days to book for cheap flights from Baltimore to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Boise

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $150 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI) cost?
Lock in a cheap one-way flight from $150 or cheap return flight from $283 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI)?
November is the most affordable month to fly from BWI to BOI. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI)?
To find the cheapest airline that'll fly you from BWI to BOI, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI)?
You'll have to hop on a flight with a layover when traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from BWI to BOI?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI)?
To avoid possible delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI) last-minute?
Last-minute fares from BWI to BOI are generally more expensive. For the best rates, start searching for flights well ahead of time. That said, if you're flexible with your travel dates, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book a BWI to BOI flight and hotel package?
Opting for a BWI to BOI flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our wide range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Boise Airport (BOI)?
Generally, it's possible to reschedule or cancel your BWI to BOI flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.