Idaho

$109+ Cheap flights from Baltimore (BWI) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BOI
Aug 25 — Sep 11
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Cheap flight deals from Baltimore to Idaho

Keep the following information in mind while searching for Baltimore to Idaho flight deals. Data was last updated August 20, 2025.

Round-trip from

$169
(Orbitz)

One-way from

$109
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$418
From Baltimore/Washington to Idaho
One-way flight from Baltimore/Washington to Idaho
Highest demand for flights based on searches. 19% potential increase in price ($105 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Baltimore to Idaho

Cheapest flights from Baltimore to Idaho
Explore the most affordable flight options available from Baltimore to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Orbitz deal was found by Cheapflights users on 8/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:16 amBWI - BOI
1 stop14h 15mSpirit Airlines
Thu 9/112:16 pmBOI - BWI
1 stop12h 14mSpirit Airlines
Deal found 8/18$169
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/268:16 amBWI - BOI
1 stop14h 15mSpirit Airlines
Sun 9/282:16 pmBOI - BWI
1 stop12h 14mSpirit Airlines
Deal found 8/18$197
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:02 pmBWI - BOI
1 stop20h 19mSpirit Airlines
Sat 9/132:16 pmBOI - BWI
1 stop12h 14mSpirit Airlines
Deal found 8/18$205
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:02 pmBWI - BOI
1 stop20h 19mSpirit Airlines
Fri 9/129:26 pmBOI - BWI
1 stop29h 04mSpirit Airlines
Deal found 8/19$209
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:16 amBWI - BOI
1 stop14h 15mSpirit Airlines
Mon 9/229:26 pmBOI - BWI
1 stop29h 04mSpirit Airlines
Deal found 8/18$212
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/177:02 pmBWI - BOI
1 stop20h 19mMultiple Airlines
Sun 9/2112:22 pmBOI - BWI
1 stop27h 20mMultiple Airlines
Deal found 8/18$213
This Cheapflightsfares deal was found by Cheapflights users on 8/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:50 amBWI - BOI
1 stop14h 06mSpirit Airlines
Thu 10/92:25 pmBOI - BWI
1 stop12h 05mSpirit Airlines
Deal found 8/19$221
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:50 amBWI - BOI
1 stop14h 06mSpirit Airlines
Sun 11/22:25 pmBOI - BWI
1 stop12h 05mSpirit Airlines
Deal found 8/18$223
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:02 pmBWI - BOI
1 stop27h 29mSpirit Airlines
Sun 9/282:16 pmBOI - BWI
1 stop12h 14mSpirit Airlines
Deal found 8/18$225
This Orbitz deal was found by Cheapflights users on 8/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:01 pmBWI - BOI
2 stops17h 42mMultiple Airlines
Sat 10/182:25 pmBOI - BWI
1 stop12h 05mMultiple Airlines
Deal found 8/18$228
This FlightHub deal was found by Cheapflights users on 8/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:02 pmBWI - BOI
1 stop27h 29mSpirit Airlines
Mon 9/229:26 pmBOI - BWI
1 stop29h 04mSpirit Airlines
Deal found 8/20$229
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/127:02 pmBWI - BOI
1 stop20h 19mSpirit Airlines
Sat 9/202:16 pmBOI - BWI
1 stop12h 14mSpirit Airlines
Deal found 8/19$230

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Baltimore to Idaho that are best for you.

Fly from

Baltimore

Fly to

Idaho

Route

Depart

Return

Price

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 9/8

8:16 am-8:31 pm

1 stop14h 15m

Boise Air Term. Gowen Fld

Thu 9/11

2:16 pm-4:30 am

1 stop12h 14m

$169

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 9/26

8:16 am-8:31 pm

1 stop14h 15m

Boise Air Term. Gowen Fld

Sun 9/28

2:16 pm-4:30 am

1 stop12h 14m

$197

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 9/10

7:02 pm-1:21 pm

1 stop20h 19m

Boise Air Term. Gowen Fld

Sat 9/13

2:16 pm-4:30 am

1 stop12h 14m

$205

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Thu 9/25

7:02 pm-8:31 pm

1 stop27h 29m

Boise Air Term. Gowen Fld

Mon 9/29

9:26 pm-4:30 am

1 stop29h 04m

$209

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 9/10

7:02 pm-1:21 pm

1 stop20h 19m

Boise Air Term. Gowen Fld

Fri 9/12

9:26 pm-4:30 am

1 stop29h 04m

$209

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 9/15

8:16 am-8:31 pm

1 stop14h 15m

Boise Air Term. Gowen Fld

Mon 9/22

9:26 pm-4:30 am

1 stop29h 04m

$212

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 9/17

7:02 pm-1:21 pm

1 stop20h 19m

Boise Air Term. Gowen Fld

Sun 9/21

12:22 pm-5:42 pm

1 stop27h 20m

$213

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 10/6

7:50 am-7:56 pm

1 stop14h 06m

Boise Air Term. Gowen Fld

Thu 10/9

2:25 pm-4:30 am

1 stop12h 05m

$221

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 10/31

7:50 am-7:56 pm

1 stop14h 06m

Boise Air Term. Gowen Fld

Sun 11/2

2:25 pm-4:30 am

1 stop12h 05m

$223

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Thu 9/25

7:02 pm-8:31 pm

1 stop27h 29m

Boise Air Term. Gowen Fld

Sun 9/28

2:16 pm-4:30 am

1 stop12h 14m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 60 results
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Best time to book a flight from Baltimore to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Idaho

What is the cheapest month to book a flight from Baltimore to Idaho?

Currently, October is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $314). Flying from Baltimore to Idaho in June is currently the most expensive (average of $399). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to ID?

Find hourly flight availability from Baltimore to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Baltimore to Idaho as you normally would.

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated August 20, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Baltimore to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
8.0
Very good

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Baltimore to Idaho?

    Most people fly from Baltimore/Washington (BWI) if they book a flight from Baltimore to Idaho. Baltimore/Washington is conveniently located just 8.5 mi from Baltimore’s city center.

  • How long is the flight from Baltimore to Idaho?

    Spirit Airlines, Delta, and United Airlines can get you from Baltimore to Idaho in just under 7h 36m. Your travel time can differ by up to 6h 39m. The distance between Baltimore and Idaho is about 2105 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Baltimore to Idaho one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $109. Users have also found prices from $128 and $129 on Frontier and Hawaiian Airlines, respectively.

  • What are the most popular routes from Baltimore to Idaho?

  • Can I find deals for flights from Baltimore to Idaho that include hotel bookings?

    Yes. In addition to deals on Baltimore to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Idaho.

  • Can I find deals for business class flights from Baltimore to Idaho?

    Yes. Cheapflights offers flight deals from Baltimore to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $314). Flying from Baltimore to Idaho in June is currently the most expensive (average of $399). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Baltimore to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Baltimore to Idaho

Discover the top 4 airlines that operate flights from Baltimore to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$471FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$630FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$334Average$823FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$347Average$487FlexibilityNo cancel feeOn-time63%

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