Idaho

$103+ 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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BOI
May 22 — May 291
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Cheap 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 April 22, 2026.

This Delta deal was found by Cheapflights users on 4/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 pm
BWI
-
BOI
1 stop6h 29m
Delta
Wed 8/265:40 am
BOI
-
BWI
2 stops9h 28m
Delta
Deal found 4/20$202
This Delta deal was found by Cheapflights users on 4/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:10 am
BWI
-
BOI
1 stop9h 24m
Delta
Mon 9/1411:30 pm
BOI
-
BWI
1 stop9h 40m
Delta
Deal found 4/20$203
This Delta deal was found by Cheapflights users on 4/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 pm
BWI
-
GEG
1 stop7h 04m
Delta
Tue 9/16:05 am
GEG
-
BWI
1 stop9h 04m
Delta
Deal found 4/20$205
This Delta deal was found by Cheapflights users on 4/21. 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.
Mon 8/247:00 pm
BWI
-
BOI
1 stop6h 29m
Delta
Sat 8/295:40 am
BOI
-
BWI
1 stop6h 15m
Delta
Deal found 4/21$209
This Delta deal was found by Cheapflights users on 4/21. 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 8/207:10 am
BWI
-
BOI
1 stop9h 24m
Delta
Mon 8/245:40 am
BOI
-
BWI
2 stops11h 12m
Delta
Deal found 4/21$214
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:55 pm
BWI
-
BOI
1 stop9h 30m
Southwest
Wed 8/266:00 am
BOI
-
BWI
1 stop8h 30m
Southwest
Deal found 4/20$216
This Delta deal was found by Cheapflights users on 4/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:00 am
BWI
-
GEG
1 stop8h 01m
Delta
Mon 6/810:48 pm
GEG
-
BWI
1 stop8h 59m
Delta
Deal found 4/20$224
This United Airlines deal was found by Cheapflights users on 4/21. 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 9/124:23 pm
BWI
-
BOI
1 stop8h 09m
United Airlines
Sat 9/1911:46 am
BOI
-
BWI
2 stops10h 57m
United Airlines
Deal found 4/21$246
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:15 am
BWI
-
BOI
1 stop7h 17m
United Airlines
Thu 5/287:05 pm
BOI
-
BWI
1 stop10h 05m
United Airlines
Deal found 4/20$252
This Delta deal was found by Cheapflights users on 4/21. 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.
Sun 5/247:00 am
BWI
-
GEG
1 stop7h 17m
Delta
Tue 6/212:27 pm
GEG
-
BWI
1 stop9h 20m
Delta
Deal found 4/21$257
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:00 am
BWI
-
BOI
2 stops10h 45m
Southwest
Mon 9/1412:10 pm
BOI
-
BWI
1 stop8h 35m
Southwest
Deal found 4/20$257
This Delta deal was found by Cheapflights users on 4/22. 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 5/286:59 pm
BWI
-
BOI
1 stop6h 47m
Delta
Wed 6/311:39 pm
BOI
-
BWI
1 stop9h 05m
Delta
Deal found 4/22$258

Find flight deals from Baltimore to Idaho

Keep the following information in mind while searching for Baltimore to Idaho flight deals. Data was last updated April 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$202
(Delta)

One-way from

$103
(Delta)

Popular in

December

Cheapest in

April

Average price

$270
Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.
From Baltimore/Washington to Idaho
One-way flight from Baltimore/Washington to Idaho
Highest demand for flights based on searches. 12% potential increase in price ($57 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 22, 2026.
Use the filters below to find and compare flights from Baltimore to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 8/18

7:00 pm-11:29 pm

1 stop6h 29m

Boise Air Term. Gowen Fld

Wed 8/26

5:40 am-5:08 pm

2 stops9h 28m

$202

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 5/12

6:59 pm-11:06 pm

1 stop7h 07m

Spokane

Tue 5/19

4:57 pm-5:45 am

1 stop9h 48m

$205

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Fri 5/29

5:26 pm-11:35 pm

2 stops9h 09m

Spokane

Mon 6/1

10:40 pm-10:44 am

1 stop9h 04m

$276

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Fri 5/29

4:17 pm-11:06 pm

1 stop9h 49m

Spokane

Mon 6/1

7:25 pm-3:17 pm

1 stop16h 52m

$328

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Mon 7/13

5:32 am-11:40 am

1 stop9h 08m

Spokane

Tue 7/28

4:30 pm-5:57 am

2 stops10h 27m

$342

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 8/12

7:10 am-2:34 pm

1 stop9h 24m

Boise Air Term. Gowen Fld

Wed 8/19

5:40 am-5:08 pm

2 stops9h 28m

$345

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 7/27

5:00 pm-10:32 pm

1 stop7h 32m

Boise Air Term. Gowen Fld

Thu 8/6

5:20 am-6:23 pm

2 stops11h 03m

$356

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 6/10

7:03 am-3:26 pm

1 stop10h 23m

Boise Air Term. Gowen Fld

Tue 6/16

6:13 pm-5:41 am

1 stop9h 28m

$388

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 6/1

3:55 pm-12:45 am

1 stop10h 50m

Boise Air Term. Gowen Fld

Wed 6/17

5:30 am-6:55 pm

2 stops11h 25m

$389

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 9/4

6:35 am-2:10 pm

2 stops9h 35m

Boise Air Term. Gowen Fld

Tue 9/8

6:00 am-4:30 pm

1 stop8h 30m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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, July is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $116). Flying from Baltimore to Idaho in April is currently the most expensive (average of $410). 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.

How much does it cost to fly round-trip from Baltimore to Idaho?

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 April 22, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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.

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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?

    Delta, United Airlines, and Alaska Airlines can get you from Baltimore to Idaho in just under 7h 07m. Your travel time can differ by up to 2h 42m. 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 Delta. According to our data, you can fly for as low as $143. Users have also found prices from $163 and $197 on United Airlines and Southwest, 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, July is the cheapest month in which you can book a flight from Baltimore to Idaho (average of $116). Flying from Baltimore to Idaho in April is currently the most expensive (average of $410). 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 April 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$458FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$275Average$628FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$321Average$393FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$351Average$487FlexibilityNo cancel feeOn-time63%

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