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$185+ Cheap flights from Bismarck to Seattle (BIS - SEA)

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — SEA
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Cheap 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 April 23, 2026.

This Delta deal was found by Cheapflights users on 4/20. 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 5/511:17 am
BIS
-
SEA
1 stop7h 28m
Delta
Sat 5/912:00 pm
SEA
-
BIS
1 stop5h 34m
Delta
Deal found 4/20$369
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 5/56:00 am
BIS
-
SEA
1 stop5h 40m
United Airlines
Sat 5/98:38 am
SEA
-
BIS
2 stops13h 03m
United Airlines
Deal found 4/20$374
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/166:00 am
BIS
-
SEA
1 stop5h 40m
United Airlines
Sun 5/245:07 am
SEA
-
BIS
1 stop5h 49m
United Airlines
Deal found 4/22$380
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 9/239:16 am
BIS
-
SEA
1 stop8h 35m
United Airlines
Fri 10/22:34 pm
SEA
-
BIS
1 stop7h 03m
United Airlines
Deal found 4/21$415
This American Airlines deal was found by Cheapflights users on 4/18. 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 8/211:32 pm
BIS
-
SEA
1 stop8h 30m
American Airlines
Tue 8/2512:34 am
SEA
-
BIS
1 stop10h 27m
American Airlines
Deal found 4/18$425
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Thu 5/76:00 am
BIS
-
SEA
2 stops10h 36m
United Airlines
Mon 5/115:05 am
SEA
-
BIS
1 stop6h 00m
United Airlines
Deal found 4/21$439
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:00 am
BIS
-
SEA
2 stops14h 03m
Delta
Sun 5/249:05 am
SEA
-
BIS
1 stop8h 29m
Delta
Deal found 4/21$467

Find 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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Delta)

One-way from

$185
(Trip.com)

Popular in

May

Cheapest in

July

Average price

$469
Provider with most accurate pricing for Bismarck-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bismarck-Seattle/Tacoma Intl flights.
Search Deals
From Bismarck to Seattle/Tacoma Intl
Search Deals
One-way flight from Bismarck to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 23, 2026.
Use the filters below to find and compare flights from Bismarck to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 5/5

1:19 pm-8:42 pm

1 stop9h 23m

Seattle/Tacoma Intl

Sat 5/9

12:00 pm-7:34 pm

1 stop5h 34m

$369

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Fri 5/8

2:26 pm-9:22 pm

1 stop8h 56m

Seattle/Tacoma Intl

Tue 5/12

11:41 am-10:55 pm

1 stop9h 14m

$369

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 5/7

5:42 pm-11:44 pm

1 stop8h 02m

Seattle/Tacoma Intl

Mon 5/11

11:59 pm-10:29 am

1 stop8h 30m

$369

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 5/5

6:00 am-9:40 am

1 stop5h 40m

Seattle/Tacoma Intl

Sat 5/9

8:38 am-11:41 pm

2 stops13h 03m

$374

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Wed 9/23

9:16 am-4:15 pm

2 stops8h 59m

Seattle/Tacoma Intl

Fri 10/2

2:34 pm-11:37 pm

1 stop7h 03m

$420

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 5/7

6:00 am-2:36 pm

2 stops10h 36m

Seattle/Tacoma Intl

Mon 5/11

5:05 am-1:05 pm

1 stop6h 00m

$439

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Sat 7/11

5:40 pm-11:58 pm

1 stop8h 18m

Seattle/Tacoma Intl

Tue 7/14

11:59 pm-10:30 am

1 stop8h 31m

$489

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Wed 7/15

2:00 pm-10:26 pm

1 stop10h 26m

Seattle/Tacoma Intl

Wed 7/22

11:56 pm-12:12 pm

1 stop10h 16m

$498

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Fri 8/14

1:45 pm-11:24 pm

2 stops11h 39m

Seattle/Tacoma Intl

Sat 8/22

3:51 pm-11:38 pm

1 stop5h 47m

$605

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 5/5

5:03 pm-9:06 pm

1 stop6h 03m

Seattle/Tacoma Intl

Fri 5/8

5:25 pm-1:05 pm

2 stops17h 40m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Bismarck-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bismarck-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, July is the cheapest month in which you can book a flight from Bismarck to Seattle (average of $313). Flying from Bismarck to Seattle in May is currently the most expensive (average of $626). 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.

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

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 April 23, 2026.
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
8,438 reviews

Food

7.2

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

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
8,438 reviews
Delta
7.9
Good
8,438 reviews

Food

7.2

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

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
9,637 reviews
Delta
7.9
Good
8,438 reviews

Food

7.2

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

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 $369, Delta can have you in Seattle from Bismarck in 8h 02m. The distance between Bismarck and Seattle is about 1011 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 44% 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, July is the cheapest month in which you can book a flight from Bismarck to Seattle (average of $313). Flying from Bismarck to Seattle in May is currently the most expensive (average of $626). 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
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Kent
Tumwater
Tukwila
Puyallup
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$364FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$287Average$488FlexibilityNo cancel feeOn-time69%

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