Idaho

$132+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BOI
Jun 21 — Jun 281
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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 May 22, 2026.

This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:19 am
BWI
-
BOI
1 stop9h 32m
Delta
Tue 7/146:42 pm
BOI
-
BWI
1 stop9h 18m
Delta
Deal found 5/18$263
This Delta deal was found by Cheapflights users on 5/20. 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 7/146:20 am
BWI
-
BOI
1 stop6h 37m
Delta
Wed 7/2911:42 pm
BOI
-
BWI
1 stop9h 05m
Delta
Deal found 5/20$293
This Delta deal was found by Cheapflights users on 5/17. 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.
Sat 7/186:00 am
BWI
-
BOI
1 stop8h 53m
Delta
Tue 7/2111:42 pm
BOI
-
BWI
1 stop7h 42m
Delta
Deal found 5/17$303
This Delta deal was found by Cheapflights users on 5/21. 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.
Fri 7/246:20 am
BWI
-
BOI
1 stop9h 24m
Delta
Mon 7/2711:42 pm
BOI
-
BWI
1 stop7h 42m
Delta
Deal found 5/21$306
This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 am
BWI
-
GEG
1 stop7h 28m
Delta
Tue 9/17:07 pm
GEG
-
BWI
1 stop7h 56m
Delta
Deal found 5/18$309
This American Airlines deal was found by Cheapflights users on 5/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:44 am
BWI
-
BOI
2 stops11h 03m
American Airlines
Tue 7/213:10 pm
BOI
-
BWI
1 stop7h 23m
American Airlines
Deal found 5/20$310
This Delta deal was found by Cheapflights users on 5/21. 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 5/287:00 am
BWI
-
BOI
1 stop7h 43m
Delta
Fri 5/296:41 pm
BOI
-
BWI
1 stop9h 04m
Delta
Deal found 5/21$311
This Southwest deal was found by Cheapflights users on 5/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/272:50 pm
BWI
-
GEG
2 stops11h 05m
Southwest
Thu 5/282:50 pm
GEG
-
BWI
1 stop6h 35m
Southwest
Deal found 5/19$314
This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/72:18 pm
BWI
-
GEG
1 stop10h 12m
Delta
Thu 8/137:15 pm
GEG
-
BWI
1 stop8h 05m
Delta
Deal found 5/18$318
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:20 am
BWI
-
BOI
1 stop9h 24m
Delta
Wed 7/156:42 pm
BOI
-
BWI
1 stop9h 18m
Delta
Deal found 5/19$318
This Southwest deal was found by Cheapflights users on 5/17. 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.
Sun 5/245:15 pm
BWI
-
GEG
1 stop8h 45m
Southwest
Thu 5/285:00 am
GEG
-
BWI
2 stops15h 55m
Southwest
Deal found 5/17$320
This American Airlines deal was found by Cheapflights users on 5/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:06 am
BWI
-
GEG
1 stop9h 13m
American Airlines
Tue 9/16:30 am
GEG
-
BWI
2 stops12h 29m
American Airlines
Deal found 5/22$321

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 May 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$263
(Delta)

One-way from

$132
(Delta)

Popular in

December

Cheapest in

May

Average price

$328
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. 10% potential increase in price ($49 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in May 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 May 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

Fri 8/14

7:39 am-12:10 pm

1 stop6h 31m

Boise Air Term. Gowen Fld

Tue 8/18

6:44 pm-6:20 am

1 stop9h 36m

$306

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 8/25

4:43 pm-11:11 pm

1 stop9h 28m

Spokane

Tue 9/1

5:12 am-3:40 pm

1 stop7h 28m

$309

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Sat 9/26

6:19 am-1:07 pm

1 stop9h 48m

Spokane

Wed 9/30

7:07 pm-6:03 am

1 stop7h 56m

$309

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Thu 5/28

7:00 am-12:43 pm

1 stop7h 43m

Boise Air Term. Gowen Fld

Fri 5/29

6:41 pm-5:45 am

1 stop9h 04m

$311

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 8/25

4:43 pm-11:11 pm

1 stop9h 28m

Spokane

Wed 8/26

5:12 am-3:40 pm

1 stop7h 28m

$323

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 7/27

7:10 pm-11:46 pm

1 stop6h 36m

Boise Air Term. Gowen Fld

Thu 8/6

11:35 pm-9:19 am

1 stop7h 44m

$325

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 7/10

5:40 am-12:53 pm

1 stop9h 13m

Boise Air Term. Gowen Fld

Sun 7/12

11:42 pm-9:24 am

1 stop7h 42m

$349

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Fri 8/14

4:10 pm-10:00 pm

1 stop8h 50m

Spokane

Sun 8/16

1:00 pm-6:35 am

1 stop14h 35m

$356

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Mon 7/6

6:19 am-11:40 am

1 stop8h 21m

Spokane

Mon 7/13

7:08 pm-6:00 am

1 stop7h 52m

$374

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Fri 8/14

7:40 am-4:15 pm

2 stops10h 35m

Boise Air Term. Gowen Fld

Tue 8/18

2:20 pm-6:30 am

1 stop14h 10m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/21

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?

How far ahead should I book a flight from Baltimore to Idaho?

Booking 33 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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, Alaska Airlines, and Southwest can get you from Baltimore to Idaho in just under 6h 31m. Your travel time can differ by up to 2h 57m. 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 $129. 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 May 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$196Average$438FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$275Average$628FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$321Average$372FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$342Average$478FlexibilityNo cancel feeOn-time63%

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