HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$119+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BOI
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 septiembre 17, 2025.

Round-trip from

$237
(Delta)

One-way from

$119
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$453
From Baltimore/Washington to Idaho
Search Deals
One-way flight from Baltimore/Washington to Idaho
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 septiembre 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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.
jue. 12/47:01 amBWI - BOI
1 stop7h 50mDelta
sáb. 1/101:43 pmBOI - BWI
1 stop8h 28mDelta
Deal found 9/16$237
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
sáb. 11/157:38 amBWI - BOI
1 stop10h 39mAlaska Airlines
lun. 11/244:38 pmBOI - BWI
1 stop11h 01mAlaska Airlines
Deal found 9/15$306
This Delta deal was found by Cheapflights users on 9/16. 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.
jue. 12/46:00 amBWI - GEG
2 stops11h 55mDelta
lun. 12/83:35 pmGEG - BWI
2 stops11h 28mDelta
Deal found 9/16$312
This United Airlines deal was found by Cheapflights users on 9/15. 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.
sáb. 11/158:15 amBWI - BOI
1 stop7h 10mUnited Airlines
lun. 11/247:00 pmBOI - BWI
2 stops10h 56mUnited Airlines
Deal found 9/15$312
This American Airlines deal was found by Cheapflights users on 9/14. 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.
jue. 12/46:00 amBWI - BOI
1 stop9h 06mAmerican Airlines
sáb. 1/101:43 pmBOI - BWI
1 stop6h 40mAmerican Airlines
Deal found 9/14$314
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/17:02 pmBWI - GEG
1 stop28h 16mMultiple Airlines
dom. 10/59:08 pmGEG - BWI
2 stops22h 28mMultiple Airlines
Deal found 9/16$315
This Delta deal was found by Cheapflights users on 9/15. 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.
vie. 10/312:45 pmBWI - GEG
1 stop8h 01mDelta
mar. 11/412:51 pmGEG - BWI
1 stop8h 50mDelta
Deal found 9/15$317
This United Airlines deal was found by Cheapflights users on 9/15. 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.
vie. 10/3110:10 amBWI - GEG
2 stops16h 19mUnited Airlines
mar. 11/45:10 amGEG - BWI
1 stop7h 00mUnited Airlines
Deal found 9/15$322
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/107:16 pmBWI - GEG
1 stop8h 08mAlaska Airlines
lun. 12/151:33 pmGEG - BWI
1 stop13h 07mAlaska Airlines
Deal found 9/17$326
This Delta deal was found by Cheapflights users on 9/15. 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.
mié. 10/157:15 amBWI - GEG
1 stop7h 46mDelta
lun. 10/207:05 pmGEG - BWI
1 stop7h 55mDelta
Deal found 9/15$327
This Delta deal was found by Cheapflights users on 9/16. 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.
mié. 12/107:01 amBWI - GEG
1 stop8h 10mDelta
lun. 12/151:16 pmGEG - BWI
1 stop8h 11mDelta
Deal found 9/16$334
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
mié. 10/157:51 amBWI - BOI
1 stop8h 45mAlaska Airlines
mié. 10/155:38 pmBOI - BWI
1 stop10h 34mAlaska Airlines
Deal found 9/15$335

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 septiembre 17, 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

jue. 12/4

7:01 am-12:51 pm

1 stop7h 50m

Boise Air Term. Gowen Fld

sáb. 1/10

1:43 pm-12:11 am

1 stop8h 28m

$237

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

jue. 12/4

6:00 am-2:55 pm

2 stops11h 55m

Spokane

lun. 12/8

3:35 pm-6:03 am

2 stops11h 28m

$312

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

jue. 10/16

6:45 am-1:43 pm

1 stop8h 58m

Boise Air Term. Gowen Fld

mié. 10/22

2:39 pm-11:18 pm

1 stop6h 39m

$314

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

mié. 12/10

7:16 pm-12:24 am

1 stop8h 08m

Spokane

lun. 12/15

1:33 pm-5:40 am

1 stop13h 07m

$326

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

mié. 10/15

7:15 am-12:01 pm

1 stop7h 46m

Spokane

lun. 10/20

7:05 pm-6:00 am

1 stop7h 55m

$327

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

vie. 10/31

6:00 am-12:29 pm

1 stop8h 29m

Boise Air Term. Gowen Fld

dom. 11/2

5:42 am-1:50 pm

1 stop6h 08m

$337

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

mié. 12/10

6:00 am-12:29 pm

2 stops9h 29m

Spokane

lun. 12/15

1:16 pm-12:27 am

1 stop8h 11m

$339

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

sáb. 11/15

7:15 am-6:54 pm

2 stops13h 39m

Boise Air Term. Gowen Fld

lun. 11/24

4:45 pm-5:58 am

2 stops11h 13m

$344

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

mar. 11/11

7:29 am-12:32 pm

1 stop8h 03m

Spokane

vie. 11/14

1:14 pm-11:55 pm

1 stop7h 41m

$348

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

sáb. 10/18

6:14 am-11:43 am

1 stop8h 29m

Spokane

sáb. 10/25

12:33 pm-10:54 pm

1 stop7h 21m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
1
2
3
...
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, 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 $398). 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 septiembre 17, 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 septiembre 17, 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.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 50m. Your travel time can differ by up to 1h 08m. 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 United Airlines. According to our data, you can fly for as low as $119. Users have also found prices from $124 and $158 on Delta and Alaska Airlines, respectively.

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

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

  • 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 $398). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Baltimore to Boston flights
Reagan-National to Dallas/Fort Worth flights
Dulles Intl to O'Hare Intl flights
Dulles Intl to Orlando flights
Dulles Intl to Atlanta flights
Baltimore to O'Hare Intl flights
Reagan-National to Los Angeles flights
Dulles Intl to Miami flights
Dulles Intl to Los Angeles flights
Reagan-National to O'Hare Intl flights
Dulles Intl to Las Vegas flights
Philadelphia to Orlando flights
Dulles Intl to Boston flights
Reagan-National to Boston flights
Reagan-National to Miami flights
Reagan-National to Las Vegas flights
Philadelphia to O'Hare Intl flights
Dulles Intl to Seattle flights
Philadelphia to Las Vegas flights
Baltimore to Fort Lauderdale flights
Philadelphia to Dallas/Fort Worth flights
Reagan-National to Orlando flights
Baltimore to Orlando flights
Reagan-National to Hobby flights
Baltimore to Midway flights
Baltimore to San Francisco flights
Baltimore to Las Vegas flights
Reagan-National to San Francisco flights
Baltimore to Los Angeles flights
Reagan-National to Seattle flights
Reagan-National to Atlanta flights
Philadelphia to Fort Lauderdale flights
Philadelphia to Atlanta flights
Philadelphia to Denver flights
Baltimore to Atlanta flights
Dulles Intl to San Francisco flights
Dulles Intl to Hobby flights
Baltimore to Seattle flights
Baltimore to Miami flights
Baltimore to Hobby flights
Philadelphia to Miami flights
Baltimore to Denver flights
Dulles Intl to Sky Harbor Intl flights
Dulles Intl to Tampa flights
Dulles Intl to Detroit flights
Dulles Intl to New Orleans flights
Dulles Intl to Midway flights
Dulles Intl to Denver flights

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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$488FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$602FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$334Average$823FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$347Average$486FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.