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$149+ Cheap flights from Idaho to Baltimore (BWI)

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BWI
Apr 17 — Apr 241
Fri 4/17
Fri 4/24
1 adult, Economy
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Cheap flight deals from Idaho to Baltimore

Cheapest flights from Idaho to Baltimore
Explore the most affordable flight options available from Idaho to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.

This Delta deal was found by Cheapflights users on 3/16. 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 4/2210:40 pm
GEG
-
BWI
1 stop9h 06m
Delta
Sat 5/23:00 pm
BWI
-
GEG
1 stop9h 05m
Delta
Deal found 3/16$297
This Southwest deal was found by Cheapflights users on 3/16. 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 4/221:45 pm
GEG
-
BWI
1 stop12h 35m
Southwest
Sat 5/22:10 pm
BWI
-
GEG
1 stop10h 25m
Southwest
Deal found 3/16$302
This Southwest deal was found by Cheapflights users on 3/14. 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 4/221:45 pm
GEG
-
BWI
1 stop12h 35m
Southwest
Tue 4/283:10 pm
BWI
-
GEG
2 stops10h 45m
Southwest
Deal found 3/14$308
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 4/256:00 am
BOI
-
BWI
1 stop10h 16m
Alaska Airlines
Tue 4/287:04 am
BWI
-
BOI
1 stop10h 29m
Alaska Airlines
Deal found 3/13$317
This Southwest deal was found by Cheapflights users on 3/13. 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 4/153:15 pm
BOI
-
BWI
1 stop6h 35m
Southwest
Sat 4/253:50 pm
BWI
-
BOI
1 stop8h 05m
Southwest
Deal found 3/13$322
This United Airlines deal was found by Cheapflights users on 3/16. 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 4/221:46 pm
GEG
-
BWI
1 stop6h 38m
United Airlines
Sat 5/26:15 am
BWI
-
GEG
2 stops11h 16m
United Airlines
Deal found 3/16$322
This Southwest deal was found by Cheapflights users on 3/14. 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.
Mon 4/134:20 pm
BOI
-
BWI
1 stop6h 05m
Southwest
Tue 4/143:30 pm
BWI
-
BOI
1 stop10h 00m
Southwest
Deal found 3/14$325
This Delta deal was found by Cheapflights users on 3/14. 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 4/227:38 pm
GEG
-
BWI
2 stops10h 33m
Delta
Wed 4/296:08 am
BWI
-
GEG
2 stops11h 41m
Delta
Deal found 3/14$327
This American Airlines deal was found by Cheapflights users on 3/14. 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 4/251:29 pm
BOI
-
BWI
1 stop8h 27m
American Airlines
Tue 4/285:39 am
BWI
-
BOI
1 stop9h 10m
American Airlines
Deal found 3/14$332
This United Airlines deal was found by Cheapflights users on 3/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:11 am
BOI
-
BWI
1 stop7h 57m
United Airlines
Sat 4/256:05 am
BWI
-
BOI
1 stop11h 19m
United Airlines
Deal found 3/17$333
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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.
Tue 5/58:10 am
BOI
-
BWI
1 stop8h 06m
Alaska Airlines
Tue 5/127:35 pm
BWI
-
BOI
1 stop17h 28m
Alaska Airlines
Deal found 3/13$337
This American Airlines deal was found by Cheapflights users on 3/14. 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 4/231:22 pm
GEG
-
BWI
1 stop7h 34m
American Airlines
Wed 4/295:39 am
BWI
-
GEG
1 stop9h 53m
American Airlines
Deal found 3/14$337

Find flight deals from Idaho to Baltimore

Keep the following information in mind while searching for Idaho to Baltimore flight deals. Data was last updated March 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Delta)

One-way from

$149
(Delta)

Popular in

December

Cheapest in

February

Average price

$425
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flights.
Search Deals
From Idaho to Baltimore/Washington
Search Deals
One-way flight from Idaho to Baltimore/Washington
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Baltimore 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 March 18, 2026.
Use the filters below to find and compare flights from Idaho to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Thu 4/30

4:38 pm-5:44 am

1 stop11h 06m

Baltimore/Washington

Wed 5/6

7:04 am-1:52 pm

1 stop8h 48m

$325

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Wed 4/22

7:38 pm-9:11 am

2 stops10h 33m

Baltimore/Washington

Wed 4/29

6:08 am-2:49 pm

2 stops11h 41m

$327

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Thu 4/23

2:10 pm-11:26 pm

1 stop6h 16m

Baltimore/Washington

Wed 4/29

6:08 am-2:49 pm

2 stops11h 41m

$362

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Sat 4/11

1:10 pm-5:20 am

1 stop13h 10m

Baltimore/Washington

Sat 4/18

2:50 pm-9:15 pm

2 stops9h 25m

$370

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 5/13

2:00 pm-12:25 am

1 stop8h 25m

Baltimore/Washington

Wed 5/20

3:25 pm-12:25 am

1 stop11h 00m

$375

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Thu 4/16

8:40 pm-9:11 am

2 stops10h 31m

Baltimore/Washington

Sat 4/25

6:00 am-5:21 pm

2 stops13h 21m

$381

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Sun 4/12

4:10 pm-5:20 am

1 stop11h 10m

Baltimore/Washington

Sat 4/18

2:40 pm-10:05 pm

2 stops9h 25m

$395

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 5/27

6:41 pm-5:45 am

1 stop9h 04m

Baltimore/Washington

Wed 6/3

6:17 am-1:07 pm

1 stop8h 50m

$402

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 5/27

9:16 pm-11:43 am

2 stops12h 27m

Baltimore/Washington

Tue 6/2

6:10 am-2:41 pm

2 stops10h 31m

$413

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Tue 4/28

1:46 pm-11:24 pm

1 stop6h 38m

Baltimore/Washington

Wed 4/29

11:08 am-9:11 pm

2 stops13h 03m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Idaho to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Idaho 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 Idaho to Baltimore

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

Currently, April is the cheapest month in which you can book a flight from Idaho to Baltimore (average of $141). Flying from Idaho to Baltimore in December is currently the most expensive (average of $369). 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.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Baltimore. 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 into for flights to Baltimore from Idaho?

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

  • How long is the flight from Idaho to Baltimore?

    For as low as $327, Alaska Airlines can have you in Baltimore from Idaho in 10h 33m. Airlines will cover a distance of 2105 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $143. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Idaho to Baltimore for a low price.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to Baltimore 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 Idaho to Baltimore?

    Currently, April is the cheapest month in which you can book a flight from Idaho to Baltimore (average of $141). Flying from Idaho to Baltimore in December is currently the most expensive (average of $369). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Idaho to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
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San Francisco to Philadelphia flights
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Seattle to Baltimore flights
Los Angeles to Philadelphia flights
Denver to Philadelphia flights
George Bush Intcntl to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Fort Lauderdale to Philadelphia flights
Austin to Dulles Intl flights
Minneapolis to Dulles Intl flights
Miami to Reagan-National flights
Denver to Reagan-National flights
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Top 3 airlines flying from Idaho to Baltimore

Discover the top 3 airlines that operate flights from Idaho to Baltimore. 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 March 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$378FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$283Average$494FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$340Average$436FlexibilityNo cancel feeOn-time63%

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