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Bismarck

$180+ Cheap flights from Idaho to Bismarck (BIS)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BIS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Idaho to Bismarck

Keep the following information in mind while searching for Idaho to Bismarck flight deals. Data was last updated September 16, 2025.

Round-trip from

$284
(Delta)

One-way from

$180
(Delta)

Popular in

March

Cheapest in

April

Average price

$461
From Idaho to Bismarck
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One-way flight from Idaho to Bismarck
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Idaho to Bismarck

Cheapest flights from Idaho to Bismarck
Explore the most affordable flight options available from Idaho to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:10 amGEG - BIS
1 stop6h 40mDelta
Mon 9/295:32 pmBIS - GEG
1 stop8h 26mDelta
Deal found 9/13$284
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/191:38 pmBOI - BIS
1 stop7h 48mAmerican Airlines
Mon 9/226:19 amBIS - BOI
1 stop7h 29mAmerican Airlines
Deal found 9/15$324
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.
Sat 9/203:20 pmBOI - BIS
1 stop7h 02mDelta
Wed 9/245:32 pmBIS - BOI
1 stop7h 27mDelta
Deal found 9/15$339
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.
Sun 11/235:00 amBOI - BIS
1 stop7h 11mUnited Airlines
Sun 11/305:15 pmBIS - BOI
1 stop6h 30mUnited Airlines
Deal found 9/15$349
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.
Sat 9/202:42 pmBOI - BIS
1 stop5h 04mUnited Airlines
Thu 9/256:00 amBIS - BOI
1 stop4h 42mUnited Airlines
Deal found 9/15$352
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.
Wed 10/12:23 pmGEG - BIS
1 stop6h 59mDelta
Sun 10/55:32 pmBIS - GEG
1 stop8h 26mDelta
Deal found 9/16$354
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/94:00 pmGEG - BIS
1 stop5h 39mUnited Airlines
Tue 10/145:10 pmBIS - GEG
1 stop5h 14mUnited Airlines
Deal found 9/14$364
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.
Thu 10/94:00 pmGEG - BIS
1 stop5h 39mUnited Airlines
Mon 10/135:10 pmBIS - GEG
1 stop5h 14mUnited Airlines
Deal found 9/15$379
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/192:23 pmGEG - BIS
1 stop6h 59mDelta
Sun 9/217:35 amBIS - GEG
1 stop7h 42mDelta
Deal found 9/13$404
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.
Sun 9/215:00 amBOI - BIS
1 stop4h 35mUnited Airlines
Wed 9/241:55 pmBIS - BOI
2 stops10h 39mUnited Airlines
Deal found 9/15$412
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.
Wed 11/197:05 amGEG - BIS
2 stops10h 42mDelta
Fri 11/211:20 pmBIS - GEG
1 stop8h 43mDelta
Deal found 9/15$482
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.
Fri 9/192:13 pmBOI - BIS
2 stops8h 26mUnited Airlines
Mon 9/2211:35 amBIS - BOI
2 stops12h 59mUnited Airlines
Deal found 9/15$483

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Bismarck 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 September 16, 2025.
Use the filters below to find and compare flights from Idaho to Bismarck that are best for you.

Fly from

Idaho

Fly to

Bismarck

Route

Depart

Return

Price

SpokaneBismarck

GEG - BIS

GEGBIS

Spokane

Sat 9/27

6:10 am-2:50 pm

1 stop6h 40m

Bismarck

Mon 9/29

5:32 pm-11:58 pm

1 stop8h 26m

$284

BoiseBismarck

BOI - BIS

BOIBIS

Boise Air Term. Gowen Fld

Sun 11/23

6:20 am-4:26 pm

2 stops9h 06m

Bismarck

Sun 11/30

5:15 pm-9:16 pm

1 stop5h 01m

$324

SpokaneBismarck

GEG - BIS

GEGBIS

Spokane

Wed 10/1

2:23 pm-11:22 pm

1 stop6h 59m

Bismarck

Sun 10/5

5:32 pm-11:58 pm

1 stop8h 26m

$354

SpokaneBismarck

GEG - BIS

GEGBIS

Spokane

Thu 10/9

4:00 pm-11:39 pm

1 stop5h 39m

Bismarck

Mon 10/13

5:10 pm-8:24 pm

1 stop5h 14m

$379

SpokaneBismarck

GEG - BIS

GEGBIS

Spokane

Wed 11/19

6:00 am-7:47 pm

2 stops11h 47m

Bismarck

Fri 11/21

1:20 pm-8:03 pm

1 stop8h 43m

$482

SpokaneBismarck

GEG - BIS

GEGBIS

Spokane

Wed 11/19

4:05 pm-11:39 pm

1 stop5h 34m

Bismarck

Fri 11/21

1:56 pm-3:21 pm

1 stop27h 25m

$514

BoiseBismarck

BOI - BIS

BOIBIS

Boise Air Term. Gowen Fld

Fri 11/21

5:17 pm-11:39 pm

1 stop5h 22m

Bismarck

Sun 11/30

5:15 pm-4:03 pm

2 stops23h 48m

$538

BoiseBismarck

BOI - BIS

BOIBIS

Boise Air Term. Gowen Fld

Fri 11/21

9:01 am-12:10 pm

1 stop26h 09m

Bismarck

Sun 11/30

8:24 pm-2:27 pm

1 stop19h 03m

$548

BoiseBismarck

BOI - BIS

BOIBIS

Boise Air Term. Gowen Fld

Mon 12/1

5:35 am-12:40 pm

1 stop6h 05m

Bismarck

Thu 12/11

7:40 am-2:17 pm

1 stop7h 37m

$558

BoiseBismarck

BOI - BIS

BOIBIS

Boise Air Term. Gowen Fld

Mon 12/1

1:43 pm-12:16 pm

2 stops45h 33m

Bismarck

Thu 12/11

11:36 am-3:44 pm

1 stop29h 08m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 20 results
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Best time to book a flight from Idaho to Bismarck

Have a flexible travel schedule? Discover the best time to fly to Bismarck 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 Bismarck

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

Currently, August is the cheapest month in which you can book a flight from Idaho to Bismarck (average of $346). Flying from Idaho to Bismarck in June is currently the most expensive (average of $425). 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 Bismarck. 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 Bismarck from Idaho?

    Located just 2.5 mi from the city center, Bismarck (BIS) is the airport most travelers will use when flying to Bismarck from Idaho.

  • How long is the flight from Idaho to Bismarck?

    There are many flights that can get you from Idaho to Bismarck in 6h 40m. Fly via Delta, United Airlines, or Allegiant Air to get the fastest option. There are 788 mi between Idaho and Bismarck. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Idaho to Bismarck (average of $346). Flying from Idaho to Bismarck in June is currently the most expensive (average of $425). 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 Idaho to Bismarck

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Idaho to Bismarck

Discover the top 2 airlines that operate flights from Idaho to Bismarck. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$223Average$422FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$436FlexibilityNo cancel feeOn-time69%

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