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$259+ Cheap flights from Bismarck to Seattle (BIS - SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — SEA
dic. 24 — dic. 311
mié. 12/24
mié. 12/31
1 adult, Economy
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Cheap flight deals from Bismarck to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bismarck (BIS) to Seattle (SEA). 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 noviembre 24, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$259
(Delta)

Popular in

May

Cheapest in

February

Average price

$493
Provider with most accurate pricing for Bismarck-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Bismarck-Seattle/Tacoma Intl flights.
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From Bismarck to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 20% potential increase in price ($123 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Bismarck to Seattle

Cheapest flights from Bismarck to Seattle
Explore the most affordable flight options available from Bismarck to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 24, 2025.

This Delta deal was found by Cheapflights users on 11/24. 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. 11/265:35 pmBIS - SEA
1 stop8h 26mDelta
sáb. 12/136:00 amSEA - BIS
1 stop6h 50mDelta
Deal found 11/24$346
This American Airlines deal was found by Cheapflights users on 11/22. 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.
jue. 12/42:29 pmBIS - SEA
1 stop8h 44mAmerican Airlines
mar. 12/911:34 amSEA - BIS
1 stop8h 44mAmerican Airlines
Deal found 11/22$354
This United Airlines deal was found by Cheapflights users on 11/23. 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.
lun. 12/15:15 pmBIS - SEA
1 stop7h 55mUnited Airlines
lun. 12/85:00 amSEA - BIS
1 stop5h 54mUnited Airlines
Deal found 11/23$370
This United Airlines deal was found by Cheapflights users on 11/24. 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.
mié. 11/261:56 pmBIS - SEA
2 stops11h 48mUnited Airlines
sáb. 12/138:40 amSEA - BIS
1 stop5h 45mUnited Airlines
Deal found 11/24$427
This United Airlines deal was found by Cheapflights users on 11/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/41:50 pmBIS - SEA
2 stops11h 25mUnited Airlines
mar. 12/95:00 amSEA - BIS
1 stop5h 54mUnited Airlines
Deal found 11/22$439
This United Airlines deal was found by Cheapflights users on 11/21. 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.
lun. 12/155:15 pmBIS - SEA
1 stop6h 31mUnited Airlines
sáb. 12/205:02 amSEA - BIS
1 stop13h 14mUnited Airlines
Deal found 11/21$637
This American Airlines deal was found by Cheapflights users on 11/23. 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.
lun. 12/12:28 pmBIS - SEA
1 stop8h 48mAmerican Airlines
dom. 12/712:38 amSEA - BIS
1 stop9h 43mAmerican Airlines
Deal found 11/23$638

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bismarck to Seattle 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 noviembre 24, 2025.
Use the filters below to find and compare flights from Bismarck to Seattle that are best for you.

Fly from

Bismarck

Fly to

Seattle

Route

Depart

Return

Price

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

mar. 2/10

5:00 am-12:23 pm

1 stop9h 23m

Seattle/Tacoma Intl

mié. 2/18

6:10 am-4:41 pm

1 stop8h 31m

$259

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

mar. 1/13

1:03 pm-12:20 pm

2 stops25h 17m

Seattle/Tacoma Intl

sáb. 1/17

6:05 am-4:34 pm

1 stop8h 29m

$298

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

mar. 1/13

1:35 pm-6:26 pm

1 stop6h 51m

Seattle/Tacoma Intl

sáb. 1/17

5:00 am-12:51 pm

1 stop5h 51m

$339

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

jue. 12/4

2:29 pm-9:13 pm

1 stop8h 44m

Seattle/Tacoma Intl

mar. 12/9

11:34 am-10:18 pm

1 stop8h 44m

$354

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

lun. 12/1

5:15 pm-11:10 pm

1 stop7h 55m

Seattle/Tacoma Intl

lun. 12/8

5:00 am-12:54 pm

1 stop5h 54m

$370

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

dom. 11/30

5:45 am-10:35 am

1 stop6h 50m

$469

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/22

Compare providers for flights from Bismarck to Seattle

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 Bismarck to Seattle in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Bismarck-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bismarck-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bismarck-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bismarck-Seattle 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 Bismarck-Seattle 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 Bismarck to Seattle

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

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

Currently, March is the cheapest month in which you can book a flight from Bismarck to Seattle (average of $224). Flying from Bismarck to Seattle in May is currently the most expensive (average of $471). 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 BIS to SEA?

Find hourly flight availability from Bismarck to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 24, 2025.

It’s optimal to fly from Bismarck to Seattle in the evening. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated noviembre 24, 2025.
Read through reviews of airlines operating flights from Bismarck to Seattle, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
7,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,044 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Bismarck to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Bismarck to Seattle?

    For as low as $259, Delta can have you in Seattle from Bismarck in 9h 23m. The distance between Bismarck and Seattle is about 1011 mi.

  • What are the cheapest airlines flying from Bismarck to Seattle round-trip?

    Delta, at $258, was found to be the cheapest airline from Bismarck to Seattle. An alternate airline flying to your destination would be United Airlines. Delta is 45% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Bismarck to Seattle (average of $224). Flying from Bismarck to Seattle in May is currently the most expensive (average of $471). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Tukwila
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Cle Elum
Marysville
Puyallup
Federal Way
Fife
Issaquah
Aberdeen

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Bismarck to Seattle

Discover the top 2 airlines that operate flights from Bismarck to Seattle. 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 noviembre 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$316FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$566FlexibilityNo cancel feeOn-time69%

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