Bismarck

$210+ Cheap flights from Seattle to Bismarck (SEA - 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIS
Jul 30 — Aug 61
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Cheap flight deals from Seattle to Bismarck

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bismarck (BIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 25, 2025.

Round-trip from

$449
(American Airlines)

One-way from

$271
(American Airlines)

Popular in

April

Cheapest in

March

Average price

$565
From Seattle/Tacoma Intl to Bismarck
One-way flight from Seattle/Tacoma Intl to Bismarck
High demand for flights, 6% potential price rise
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Seattle to Bismarck

Cheapest flights from Seattle to Bismarck
Explore the most affordable flight options available from Seattle to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/211:55 pmSEA - BIS
1 stop8h 44mDelta
Tue 9/911:20 amBIS - SEA
1 stop7h 24mDelta
Deal found 7/22$274
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 9/112:46 amSEA - BIS
1 stop10h 06mAmerican Airlines
Tue 9/92:32 pmBIS - SEA
1 stop8h 51mAmerican Airlines
Deal found 7/22$301
This Trip.com deal was found by Cheapflights users on 7/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/245:02 amSEA - BIS
1 stop5h 57mUnited Airlines
Sun 8/316:00 amBIS - SEA
1 stop5h 57mUnited Airlines
Deal found 7/22$338
This Trip.com deal was found by Cheapflights users on 7/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/247:22 pmSEA - BIS
2 stops15h 37mMultiple Airlines
Sun 8/316:00 amBIS - SEA
2 stops13h 31mMultiple Airlines
Deal found 7/22$543

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 July 25, 2025.
Use the filters below to find and compare flights from Seattle to Bismarck that are best for you.

Fly from

Seattle

Fly to

Bismarck

Route

Depart

Return

Price

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 9/2

11:55 pm-10:39 am

1 stop8h 44m

Bismarck

Tue 9/9

11:20 am-4:44 pm

1 stop7h 24m

$274

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Mon 9/1

12:46 am-12:52 pm

1 stop10h 06m

Bismarck

Tue 9/9

2:32 pm-9:23 pm

1 stop8h 51m

$301

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Sun 8/24

5:02 am-12:59 pm

1 stop5h 57m

Bismarck

Sun 8/31

6:00 am-9:57 am

1 stop5h 57m

$338

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Sun 8/24

7:22 pm-12:59 pm

2 stops15h 37m

Bismarck

Sun 8/31

6:00 am-5:31 pm

2 stops13h 31m

$543

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 9/16

6:00 am-4:51 pm

1 stop8h 51m

$210

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Mon 8/25

12:46 am-12:52 pm

1 stop10h 06m

$271

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Mon 9/22

11:58 pm-11:39 pm

2 stops21h 41m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Best time to book a flight from Seattle to Bismarck

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

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

Currently, August is the cheapest month in which you can book a flight from Seattle to Bismarck (average of $346). Flying from Seattle to Bismarck in July is currently the most expensive (average of $433). 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 SEA to BIS?

Find hourly flight availability from Seattle to Bismarck. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Bismarck in the afternoon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.

How much does it cost to fly round-trip from Seattle to Bismarck?

Reviews of airlines servicing Bismarck

Get insights into the airlines that provide service to Bismarck. 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 Bismarck. Reviews last updated July 25, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Seattle to Bismarck by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bismarck. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from Seattle to Bismarck round-trip?

    Our cheapest airline available from Seattle to Bismarck is American Airlines. Our recent data shows that you can find tickets from as low as $449 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $517 and $529 round-trip. American Airlines is priced at 9% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Seattle to Bismarck (average of $346). Flying from Seattle to Bismarck in July is currently the most expensive (average of $433). 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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Top 3 airlines flying from Seattle to Bismarck

Discover the top 3 airlines that operate flights from Seattle 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 July 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$432FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$328Average$578FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$358Average$608FlexibilityNo cancel feeOn-time69%

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