What is the cheapest airline that flies from Baltimore/Washington to Idaho?

Delta, Southwest, and United Airlines are the most popular carriers operating from Baltimore/Washington to Idaho

What airlines fly to Idaho?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Idaho from Baltimore according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Baltimore/Washington Airport to Idaho?

Prices for flights from Baltimore/Washington Airport to Idaho are refreshed on a daily basis.

How many operators does momondo search for flights from Baltimore/Washington Airport to Idaho?

As of April 2026, there are 5 operators available to choose from for flights from Baltimore/Washington Airport to Idaho.

How old do you have to be to fly from Baltimore/Washington Airport to Idaho?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Baltimore/Washington Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$132 Cheap Flights from Baltimore to Idaho in 2026

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Find the cheapest flights from Baltimore to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:12 am - 12:13 pm

BWI

BOI

7h 01m

1 stop

11:42 pm - 9:24 am

BOI

BWI

7h 42m

1 stop

$263Delta

Tue, Jul 14 - Tue, Jul 21

6:08 am - 1:44 pm

BWI

BOI

9h 36m

2 stops

11:42 pm - 9:24 am

BOI

BWI

7h 42m

1 stop

$268Delta

Tue, Jul 14 - Tue, Jul 21

6:25 pm - 12:25 am

BWI

BOI

8h 00m

1 stop

4:05 pm - 5:40 am

BOI

BWI

11h 35m

1 stop

$278Southwest

Wed, May 6 - Tue, May 12

5:05 pm - 12:25 am

BWI

BOI

9h 20m

2 stops

4:05 pm - 5:40 am

BOI

BWI

11h 35m

1 stop

$284Southwest

Wed, May 6 - Tue, May 12

4:23 pm - 9:25 pm

BWI

BOI

7h 02m

1 stop

7:01 pm - 7:13 am

BOI

BWI

10h 12m

1 stop

$290United Airlines

Mon, Aug 31 - Thu, Sep 10

3:48 pm - 8:47 pm

BWI

GEG

7h 59m

1 stop

6:00 am - 7:27 pm

GEG

BWI

10h 27m

1 stop

$316American Airlines

Sat, Aug 29 - Sat, Sep 5

4:17 pm - 1:17 pm

BWI

IDA

23h 00m

1 stop

1:54 pm - 5:43 am

IDA

BWI

13h 49m

1 stop

$369Alaska Airlines

Sat, May 30 - Tue, Jun 9

6:15 am - 11:05 am

BWI

JAC

6h 50m

1 stop

10:00 am - 8:40 pm

JAC

BWI

8h 40m

1 stop

$391American Airlines

Mon, May 25 - Thu, May 28

6:10 am - 11:35 am

BWI

JAC

7h 25m

1 stop

1:42 pm - 12:33 am

JAC

BWI

8h 51m

2 stops

$410United Airlines

Mon, May 25 - Thu, May 28

4:17 pm - 1:17 pm

BWI

IDA

23h 00m

1 stop

1:54 pm - 6:28 am

IDA

BWI

14h 34m

1 stop

$413Alaska Airlines

Tue, Jun 2 - Fri, Jun 5

Delta flights from Baltimore to Idaho

Our best Delta deals on Baltimore to Idaho flight tickets

Delta

Jul 14

BWI7:12 amBaltimore/Washington

7h 01m

1 stop

BOI12:13 pmBoise Air Term. Gowen Fld

Jul 21

BOI11:42 pmBoise Air Term. Gowen Fld

7h 42m

1 stop

BWI9:24 amBaltimore/Washington

$263

Delta

Jul 14

BWI6:08 amBaltimore/Washington

9h 36m

2 stops

BOI1:44 pmBoise Air Term. Gowen Fld

Jul 21

BOI11:42 pmBoise Air Term. Gowen Fld

7h 42m

1 stop

BWI9:24 amBaltimore/Washington

$268

Delta

Jul 7

BWI6:08 amBaltimore/Washington

8h 05m

2 stops

BOI12:13 pmBoise Air Term. Gowen Fld

Jul 14

BOI6:42 pmBoise Air Term. Gowen Fld

12h 42m

2 stops

BWI9:24 amBaltimore/Washington

$273

United Airlines flights from Baltimore to Idaho

Our best United Airlines deals on Baltimore to Idaho flight tickets

United Airlines

Aug 31

BWI4:23 pmBaltimore/Washington

7h 02m

1 stop

BOI9:25 pmBoise Air Term. Gowen Fld

Sep 10

BOI7:01 pmBoise Air Term. Gowen Fld

10h 12m

1 stop

BWI7:13 amBaltimore/Washington

$290

United Airlines

Sep 8

BWI4:23 pmBaltimore/Washington

7h 02m

1 stop

BOI9:25 pmBoise Air Term. Gowen Fld

Sep 15

BOI6:30 amBoise Air Term. Gowen Fld

6h 42m

1 stop

BWI3:12 pmBaltimore/Washington

$305

United Airlines

Aug 29

BWI8:00 amBaltimore/Washington

10h 48m

1 stop

BOI4:48 pmBoise Air Term. Gowen Fld

Sep 9

BOI7:01 pmBoise Air Term. Gowen Fld

10h 12m

1 stop

BWI7:13 amBaltimore/Washington

$373

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 7/14

7:12 am-12:13 pm

1 stop7h 01m

Boise Air Term. Gowen Fld

Tue 7/21

11:42 pm-9:24 am

1 stop7h 42m

$263

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 7/14

6:08 am-1:44 pm

2 stops9h 36m

Boise Air Term. Gowen Fld

Tue 7/21

11:42 pm-9:24 am

1 stop7h 42m

$268

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 5/6

6:25 pm-12:25 am

1 stop8h 00m

Boise Air Term. Gowen Fld

Tue 5/12

4:05 pm-5:40 am

1 stop11h 35m

$278

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 5/6

5:05 pm-12:25 am

2 stops9h 20m

Boise Air Term. Gowen Fld

Tue 5/12

4:05 pm-5:40 am

1 stop11h 35m

$284

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 8/31

4:23 pm-9:25 pm

1 stop7h 02m

Boise Air Term. Gowen Fld

Thu 9/10

7:01 pm-7:13 am

1 stop10h 12m

$290

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Sat 8/29

3:48 pm-8:47 pm

1 stop7h 59m

Spokane

Sat 9/5

6:00 am-7:27 pm

1 stop10h 27m

$316

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Sat 5/30

4:17 pm-1:17 pm

1 stop23h 00m

Idaho Falls Fanning Field

Tue 6/9

1:54 pm-5:43 am

1 stop13h 49m

$369

BaltimoreJackson

BWI - JAC

BWIJAC

Baltimore/Washington

Mon 5/25

6:15 am-11:05 am

1 stop6h 50m

Jackson Hole

Thu 5/28

10:00 am-8:40 pm

1 stop8h 40m

$391

BaltimoreJackson

BWI - JAC

BWIJAC

Baltimore/Washington

Mon 5/25

6:10 am-11:35 am

1 stop7h 25m

Jackson Hole

Thu 5/28

1:42 pm-12:33 am

2 stops8h 51m

$410

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Tue 6/2

4:17 pm-1:17 pm

1 stop23h 00m

Idaho Falls Fanning Field

Fri 6/5

1:54 pm-6:28 am

1 stop14h 34m

$413

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Baltimore to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Idaho?

In general, January is the cheapest month to fly from Baltimore to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $342. If you don’t want to visit Idaho in January, then you should wait until August to fly from Baltimore, when ticket prices are also cheap, with an average price of $378.

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $487 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Baltimore for as low as $389 on momondo.

Can stopping save me money on Baltimore to Idaho flights?

You could potentially save up to 33% on your flight if you consider stops on a Baltimore to Idaho flight.

Cheap Baltimore to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Idaho

Fastest flight time	6h 37m
Direct flights	None

The fastest flight from Baltimore to Idaho takes 6h 37m

There are no direct flights from Baltimore to Idaho. There are no popular flight routes from Baltimore to Idaho.

Search flight deals

Frequently asked questions about flying from Baltimore to Idaho

When did momondo last update prices for flights from Baltimore/Washington Airport to Idaho?
Prices for flights from Baltimore/Washington Airport to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from Baltimore/Washington Airport to Idaho?
As of April 2026, there are 5 operators available to choose from for flights from Baltimore/Washington Airport to Idaho.
How old do you have to be to fly from Baltimore/Washington Airport to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Baltimore/Washington Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Baltimore to Idaho

Compare and see reviews for airlines that fly from Baltimore to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $208	Free Cancellation	Rating 7.9 8,406 reviews	Search Delta flights
United Airlines	PriceFrom $275	Free Cancellation	Rating 7.4 9,589 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $321	Free Cancellation	Rating 7.9 12,234 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $342	Free Cancellation	Rating 8.0 4,331 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to Idaho?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho from Baltimore.

Can I find flights from Baltimore to Idaho with flexible booking policies on momondo?

All flight searches from Baltimore to Idaho on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Baltimore to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from Baltimore. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Baltimore to Idaho right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Baltimore to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.