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$319+ Cheap flights from Bismarck to Seattle (BIS - SEA)

BIS — SEA
Oct 14 — Oct 211
Wed 10/14
Wed 10/21
1 adult, Economy
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Cheap flight deals from Bismarck to Seattle

Cheapest flights from Bismarck to Seattle

Tue 12/85:41 pm -
1 stop8h 13m
Sun 12/136:00 am -
1 stop8h 59m
Deal found 9/10$345
Fri 10/305:02 pm -
1 stop6h 17m
Sun 11/15:05 am -
1 stop5h 22m
Deal found 9/13$398
Thu 10/2912:40 pm -
1 stop6h 18m
Mon 11/21:42 pm -
1 stop7h 43m
Deal found 9/9$434
Thu 10/295:02 pm -
1 stop6h 17m
Sun 11/15:05 am -
1 stop5h 22m
Deal found 9/13$441
Fri 9/251:40 pm -
1 stop5h 57m
Tue 9/295:00 am -
1 stop6h 01m
Deal found 9/11$479
Tue 12/89:10 am -
2 stops13h 38m
Sun 12/135:05 am -
1 stop5h 28m
Deal found 9/9$493
Thu 10/295:50 am -
2 stops10h 49m
Mon 11/23:49 pm -
1 stop5h 55m
Deal found 9/9$502

Find flight deals from Bismarck to Seattle

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$345
(Delta)

One-way from

$319
(United Airlines)

Popular in

June

Cheapest in

July

Average price

$464
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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One-way flight from Bismarck to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 10/14

6:00 am-10:01 am

1 stop6h 01m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$319

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Tue 12/8

5:41 pm-11:54 pm

1 stop8h 13m

Seattle/Tacoma Intl

Sun 12/13

6:00 am-4:59 pm

1 stop8h 59m

$345

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Thu 2/4

5:40 am-2:33 pm

2 stops10h 53m

Seattle/Tacoma Intl

Tue 2/9

3:51 pm-11:51 pm

1 stop6h 00m

$380

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 10/14

7:00 am-2:52 pm

1 stop9h 52m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$384

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 10/14

9:30 pm-9:48 am

3 stops38h 18m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$428

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Fri 9/25

1:40 pm-5:37 pm

1 stop5h 57m

Seattle/Tacoma Intl

Tue 9/29

5:00 am-1:01 pm

1 stop6h 01m

$479

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Thu 10/29

5:50 am-2:39 pm

2 stops10h 49m

Seattle/Tacoma Intl

Mon 11/2

3:49 pm-11:44 pm

1 stop5h 55m

$502

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 9/30

5:40 pm-11:55 pm

1 stop8h 15m

Seattle/Tacoma Intl

Sun 10/4

2:30 pm-11:11 pm

1 stop6h 41m

$572

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Thu 10/29

5:02 pm-9:19 pm

1 stop6h 17m

Seattle/Tacoma Intl

Sun 11/1

5:05 am-12:27 pm

1 stop5h 22m

$593

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 9/30

6:00 am-2:22 pm

2 stops10h 22m

Seattle/Tacoma Intl

Sun 10/4

5:00 am-11:43 pm

1 stop16h 43m

$594

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 11 resultsSorted by cheapest first
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Compare providers for flights from Bismarck to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bismarck to Seattle in September.
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

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 $264). Flying from Bismarck to Seattle in June is currently the most expensive (average of $741). 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?

Airfare is below average for this route at the moment.

Bismarck to Seattle flights typically cost between $400 and $628 in December.
The cheapest round-trip price found within the last 5 days was $345 on Delta (Dec 8-Dec 13).

Reviews of airlines servicing Seattle

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
7.8
Good
8,564 reviews

Entertainment

7.8

Crew

8.5

Overall

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
Delta
7.8
Good
8,564 reviews
Delta
7.8
Good
8,564 reviews

Entertainment

7.8

Crew

8.5

Overall

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
United Airlines
7.4
Good
10,213 reviews
Delta
7.8
Good
8,564 reviews

Entertainment

7.8

Crew

8.5

Overall

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.

Related info for your journey

  • How long is the flight from Bismarck to Seattle?

    For as low as $345, Delta can have you in Seattle from Bismarck in 8h 13m. 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 $264, was found to be the cheapest airline from Bismarck to Seattle. An alternate airline flying to your destination would be United Airlines. Delta is 41% 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 $264). Flying from Bismarck to Seattle in June is currently the most expensive (average of $741). 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
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Bismarck to Seattle

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$264Average$328FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$310Average$468FlexibilityNo cancel feeOn-time69%

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