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$100+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BOI
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$255
(Alaska Airlines)

One-way from

$100
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$455
Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.
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From Baltimore/Washington to Idaho
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One-way flight from Baltimore/Washington to Idaho
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Highest demand for flights based on searches. 15% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 8, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:14 pmBWI - BOI
1 stop17h 38mAlaska Airlines
Tue 2/101:55 pmBOI - BWI
1 stop26h 19mAlaska Airlines
Deal found 1/8$255
This United Airlines deal was found by Cheapflights users on 1/8. 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.
Thu 2/58:42 amBWI - BOI
1 stop9h 28mUnited Airlines
Tue 2/107:45 amBOI - BWI
2 stops11h 41mUnited Airlines
Deal found 1/8$260
This American Airlines deal was found by Cheapflights users on 1/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/125:00 amBWI - GEG
1 stop9h 44mAmerican Airlines
Wed 2/2512:25 pmGEG - BWI
1 stop8h 08mAmerican Airlines
Deal found 1/5$263
This United Airlines deal was found by Cheapflights users on 1/8. 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 2/44:10 pmBWI - BOI
1 stop7h 42mUnited Airlines
Sat 2/710:15 amBOI - BWI
1 stop9h 11mUnited Airlines
Deal found 1/8$268
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:46 pmBWI - GEG
1 stop8h 13mAlaska Airlines
Tue 2/175:57 pmGEG - BWI
1 stop20h 49mAlaska Airlines
Deal found 1/6$269
This Southwest deal was found by Cheapflights users on 1/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:25 amBWI - BOI
1 stop9h 25mSouthwest
Wed 3/253:15 pmBOI - BWI
1 stop6h 00mSouthwest
Deal found 1/5$279
This Southwest deal was found by Cheapflights users on 1/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/145:45 pmBWI - BOI
1 stop8h 35mSouthwest
Tue 2/177:05 pmBOI - BWI
1 stop8h 40mSouthwest
Deal found 1/8$284
This American Airlines deal was found by Cheapflights users on 1/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/143:20 pmBWI - GEG
1 stop8h 52mAmerican Airlines
Tue 2/1712:25 pmGEG - BWI
1 stop8h 08mAmerican Airlines
Deal found 1/7$285
This United Airlines deal was found by Cheapflights users on 1/8. 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 1/314:10 pmBWI - JAC
1 stop6h 32mUnited Airlines
Tue 2/37:00 amJAC - BWI
1 stop6h 04mUnited Airlines
Deal found 1/8$289
This United Airlines deal was found by Cheapflights users on 1/6. 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 2/74:10 pmBWI - SUN
1 stop7h 19mUnited Airlines
Sun 2/88:00 amSUN - BWI
1 stop11h 26mUnited Airlines
Deal found 1/6$293
This United Airlines deal was found by Cheapflights users on 1/8. 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.
Tue 1/274:10 pmBWI - JAC
1 stop6h 32mUnited Airlines
Sat 1/312:40 pmJAC - BWI
1 stop6h 35mUnited Airlines
Deal found 1/8$293
This Delta deal was found by Cheapflights users on 1/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:05 amBWI - BOI
2 stops12h 12mDelta
Tue 2/1011:20 amBOI - BWI
2 stops10h 06mDelta
Deal found 1/8$294

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 January 8, 2026.
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

Thu 2/5

7:14 pm-10:52 am

1 stop17h 38m

Boise Air Term. Gowen Fld

Tue 2/10

1:55 pm-6:14 pm

1 stop26h 19m

$255

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Thu 2/5

8:42 am-4:10 pm

1 stop9h 28m

Boise Air Term. Gowen Fld

Tue 2/10

7:45 am-9:26 pm

2 stops11h 41m

$260

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Thu 2/12

5:00 am-11:44 am

1 stop9h 44m

Spokane

Wed 2/25

12:25 pm-11:33 pm

1 stop8h 08m

$263

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Sat 2/14

6:46 pm-11:59 pm

1 stop8h 13m

Spokane

Tue 2/17

5:57 pm-5:46 pm

1 stop20h 49m

$269

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Sat 2/14

6:46 pm-11:59 pm

1 stop8h 13m

Spokane

Wed 2/18

5:40 am-5:46 pm

1 stop9h 06m

$275

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 3/10

8:25 am-3:50 pm

1 stop9h 25m

Boise Air Term. Gowen Fld

Wed 3/25

3:15 pm-11:15 pm

1 stop6h 00m

$279

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 2/14

5:45 pm-12:20 am

1 stop8h 35m

Boise Air Term. Gowen Fld

Tue 2/17

7:05 pm-5:45 am

1 stop8h 40m

$284

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 2/4

9:50 am-7:51 pm

2 stops12h 01m

Boise Air Term. Gowen Fld

Sat 2/7

9:48 am-9:21 pm

2 stops9h 33m

$287

BaltimoreJackson

BWI - JAC

BWIJAC

Baltimore/Washington

Sat 1/31

4:10 pm-8:42 pm

1 stop6h 32m

Jackson Hole

Tue 2/3

7:00 am-3:04 pm

1 stop6h 04m

$289

BaltimoreHailey

BWI - SUN

BWISUN

Baltimore/Washington

Sat 2/7

4:10 pm-9:29 pm

1 stop7h 19m

Hailey Sun Valley-Friedman

Sun 2/8

8:00 am-9:26 pm

1 stop11h 26m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

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, September is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $150). Flying from Baltimore to Idaho in November is currently the most expensive (average of $301). 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.

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 January 8, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
11,672 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,672 reviews
Alaska Airlines
8.0
Very good
11,672 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
8.0
Very good
4,250 reviews
Alaska Airlines
8.0
Very good
11,672 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,032 reviews
Alaska Airlines
8.0
Very good
11,672 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,142 reviews
Alaska Airlines
8.0
Very good
11,672 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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?

    Alaska Airlines, United Airlines, and American Airlines can get you from Baltimore to Idaho in just under 9h 28m. Your travel time can differ by up to 8h 10m. The distance between Baltimore and Idaho is about 2052 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 Delta. According to our data, you can fly for as low as $118. Users have also found prices from $158 and $197 on United Airlines and Southwest, respectively.

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

    The most popular route from Baltimore to Idaho is Baltimore/Washington - Jackson Hole. You may also consider Baltimore/Washington - Spokane or Baltimore/Washington - Boise Air Term. Gowen Fld.

  • 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, September is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $150). Flying from Baltimore to Idaho in November is currently the most expensive (average of $301). 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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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$448FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$298Average$608FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$321Average$372FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$346Average$483FlexibilityNo cancel feeOn-time63%

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