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$189+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIS
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$348
(Mytrip)

One-way from

$189
(American Airlines)

Popular in

July

Cheapest in

March

Average price

$594
Provider with most accurate pricing for Seattle/Tacoma Intl-Bismarck flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Bismarck flights.
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From Seattle/Tacoma Intl to Bismarck
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One-way flight from Seattle/Tacoma Intl to Bismarck
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Highest demand for flights based on searches. 21% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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 4/303:35 pmSEA - BIS
1 stop6h 14mUnited Airlines
Wed 5/71:55 pmBIS - SEA
1 stop6h 11mUnited Airlines
Deal found 4/29$343
This Delta deal was found by Cheapflights users on 4/28. 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 5/286:00 amSEA - BIS
1 stop8h 52mDelta
Wed 6/45:00 amBIS - SEA
1 stop5h 44mDelta
Deal found 4/28$422
This American Airlines deal was found by Cheapflights users on 4/29. 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 7/1411:55 pmSEA - BIS
1 stop10h 14mAmerican Airlines
Sun 7/203:00 pmBIS - SEA
1 stop8h 09mAmerican Airlines
Deal found 4/29$483

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 April 29, 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

Wed 5/28

6:00 am-4:52 pm

1 stop8h 52m

Bismarck

Wed 6/4

5:00 am-8:44 am

1 stop5h 44m

$422

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Wed 7/16

5:10 am-4:33 pm

2 stops9h 23m

Bismarck

Fri 7/25

5:11 pm-10:59 pm

1 stop7h 48m

$482

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Mon 7/14

11:55 pm-12:09 pm

1 stop10h 14m

Bismarck

Sun 7/20

3:00 pm-9:09 pm

1 stop8h 09m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Compare providers for flights from Seattle to Bismarck

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Bismarck in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Bismarck flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Bismarck flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Bismarck flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Bismarck flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Bismarck flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 June is currently the most expensive (average of $489). 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 April 29, 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.

Rainfall in Bismarck by month

Plan your trip to Bismarck by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bismarck ranges from 0.4 - 3.2 inches per month. June is typically the wettest month, when rainfall can reach 3.2 in. January is typically the driest time to visit Bismarck when rainfall is around 0.4 in.

Temperature in Bismarck by month

Plan your trip to Bismarck by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bismarck, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 12.2 F).

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 April 29, 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Seattle to Bismarck have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,929 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 $420 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $422 and $482 round-trip. American Airlines is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Bismarck one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $189. United Airlines flights start at $329 while deals on Delta start at $418 one-way.

  • 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 June is currently the most expensive (average of $489). 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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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$468FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$328Average$598FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$388Average$710FlexibilityNo cancel feeOn-time69%

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