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Cheap flights from Bismarck to Seattle from $291

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Bismarck to Seattle departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Bismarck to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:40 pm - 11:55 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
8h 15m1 stop Minneapolis St Paul
Delta Logo
11:59 pm - 10:32 amSEA  Seattle/Tacoma Intl-BIS Bismarck
8h 33m1 stop Minneapolis St Paul
$325Delta
Wed, Sep 23 - Mon, Sep 28
United Airlines Logo
9:00 am - 3:52 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
8h 52m1 stop Denver Intl
United Airlines Logo
2:34 pm - 11:38 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
7h 04m1 stop Denver Intl
$354United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
9:00 am - 4:14 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
9h 14m2 stops Denver Intl San Francisco
United Airlines Logo
2:34 pm - 11:38 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
7h 04m1 stop Denver Intl
$359United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
5:50 am - 9:47 amBIS  Bismarck-SEA Seattle/Tacoma Intl
5h 57m1 stop Denver Intl
United Airlines Logo
5:00 am - 12:32 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
5h 32m1 stop Denver Intl
$362United Airlines
Sun, Nov 1 - Thu, Dec 31
Delta Logo
5:00 am - 8:48 amBIS  Bismarck-SEA Seattle/Tacoma Intl
5h 48m1 stop Minneapolis St Paul
Delta Logo
2:56 pm - 11:11 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
6h 15m1 stop Minneapolis St Paul
$381Delta
Sun, Sep 6 - Sat, Sep 12
Delta Logo
5:36 pm - 10:00 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
6h 24m1 stop Minneapolis St Paul
Delta Logo
2:56 pm - 11:11 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
6h 15m1 stop Minneapolis St Paul
$381Delta
Sat, Sep 5 - Sat, Sep 12
Delta Logo
5:36 pm - 10:00 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
6h 24m1 stop Minneapolis St Paul
Delta Logo
6:00 am - 5:00 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
9h 00m1 stop Minneapolis St Paul
$399Delta
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
1:57 pm - 9:52 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
9h 55m1 stop Dallas/Fort Worth
American Airlines Logo
12:04 pm - 10:59 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
8h 55m1 stop Dallas/Fort Worth
$546American Airlines
Fri, Oct 2 - Mon, Oct 5
American Airlines Logo
1:55 pm - 10:26 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
10h 31m1 stop Dallas/Fort Worth
American Airlines Logo
10:15 am - 10:44 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
10h 29m1 stop Dallas/Fort Worth
$559American Airlines
Wed, Aug 26 - Wed, Sep 2
American Airlines Logo
1:01 pm - 8:52 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
9h 51m1 stop Chicago O'Hare Intl
American Airlines Logo
10:17 am - 10:52 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
10h 35m1 stop Dallas/Fort Worth
$570American Airlines
Sat, Sep 5 - Fri, Sep 11

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Delta flights from Bismarck to Seattle

Our best Delta deals on Bismarck to Seattle flight tickets
Delta
Sep 23
BIS5:40 pmBismarck
8h 15m
1 stop
SEA11:55 pmSeattle/Tacoma Intl
Sep 28
SEA11:59 pmSeattle/Tacoma Intl
8h 33m
1 stop
BIS10:32 amBismarck
$325
Delta
Sep 6
BIS5:00 amBismarck
5h 48m
1 stop
SEA8:48 amSeattle/Tacoma Intl
Sep 12
SEA2:56 pmSeattle/Tacoma Intl
6h 15m
1 stop
BIS11:11 pmBismarck
$381
Delta
Sep 5
BIS5:36 pmBismarck
6h 24m
1 stop
SEA10:00 pmSeattle/Tacoma Intl
Sep 11
SEA6:00 amSeattle/Tacoma Intl
9h 00m
1 stop
BIS5:00 pmBismarck
$399

United Airlines flights from Bismarck to Seattle

Our best United Airlines deals on Bismarck to Seattle flight tickets
United Airlines
Aug 26
BIS9:00 amBismarck
8h 52m
1 stop
SEA3:52 pmSeattle/Tacoma Intl
Sep 2
SEA2:34 pmSeattle/Tacoma Intl
7h 04m
1 stop
BIS11:38 pmBismarck
$354
United Airlines
Aug 26
BIS9:00 amBismarck
9h 14m
2 stops
SEA4:14 pmSeattle/Tacoma Intl
Sep 2
SEA2:34 pmSeattle/Tacoma Intl
7h 04m
1 stop
BIS11:38 pmBismarck
$359
United Airlines
Nov 1
BIS5:50 amBismarck
5h 57m
1 stop
SEA9:47 amSeattle/Tacoma Intl
Dec 31
SEA5:00 amSeattle/Tacoma Intl
5h 32m
1 stop
BIS12:32 pmBismarck
$362

momondo 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, momondo users made 832,500 searches. Data last updated August 12, 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

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 9/23

5:40 pm-11:55 pm

1 stop8h 15m

Seattle/Tacoma Intl

Mon 9/28

11:59 pm-10:32 am

1 stop8h 33m

$325

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 8/26

9:00 am-3:52 pm

1 stop8h 52m

Seattle/Tacoma Intl

Wed 9/2

2:34 pm-11:38 pm

1 stop7h 04m

$354

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 8/26

9:00 am-4:14 pm

2 stops9h 14m

Seattle/Tacoma Intl

Wed 9/2

2:34 pm-11:38 pm

1 stop7h 04m

$359
Quickest round-trip

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Sun 11/1

5:50 am-9:47 am

1 stop5h 57m

Seattle/Tacoma Intl

Thu 12/31

5:00 am-12:32 pm

1 stop5h 32m

$362

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Sun 9/6

5:00 am-8:48 am

1 stop5h 48m

Seattle/Tacoma Intl

Sat 9/12

2:56 pm-11:11 pm

1 stop6h 15m

$381

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Sat 9/5

5:36 pm-10:00 pm

1 stop6h 24m

Seattle/Tacoma Intl

Sat 9/12

2:56 pm-11:11 pm

1 stop6h 15m

$381

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Sat 9/5

5:36 pm-10:00 pm

1 stop6h 24m

Seattle/Tacoma Intl

Fri 9/11

6:00 am-5:00 pm

1 stop9h 00m

$399

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Fri 10/2

1:57 pm-9:52 pm

1 stop9h 55m

Seattle/Tacoma Intl

Mon 10/5

12:04 pm-10:59 pm

1 stop8h 55m

$546

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Wed 8/26

1:55 pm-10:26 pm

1 stop10h 31m

Seattle/Tacoma Intl

Wed 9/2

10:15 am-10:44 pm

1 stop10h 29m

$559

BismarckSeattle

BIS Bismarck - SEA Seattle/Tacoma Intl

BISSEA

Bismarck

Sat 9/5

1:01 pm-8:52 pm

1 stop9h 51m

Seattle/Tacoma Intl

Fri 9/11

10:17 am-10:52 pm

1 stop10h 35m

$570

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Bismarck to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Bismarck and Seattle?

Prices are currently typical for flights on this route.

Typical prices usually range from $314 to $678.
The lowest price recently found on this route was $325.

What is the cheapest month to fly to Seattle?

In general, July is the cheapest month to fly from Bismarck to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $264. If you don’t want to visit Seattle in July, then you should wait until March to fly from Bismarck, when ticket prices are also cheap, with an average price of $399.

When to book flights from Bismarck to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Bismarck to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Bismarck to Seattle (BIS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Bismarck to Seattle

Fastest flight time

5h 57m

Direct flights

None
The fastest flight from Bismarck to Seattle takes 5h 57m
There are no direct flights from Bismarck to Seattle. There are no popular flight routes from Bismarck to Seattle.
Search flight deals

Frequently asked questions about flying from Bismarck to Seattle

  • How far is Bismarck to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 1009.3 mi away from Bismarck. Flights usually cover this in 5h 57m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Bismarck Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Bismarck Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Bismarck Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Bismarck Airport to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Bismarck Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Bismarck to Seattle?

Best airlines flying from Bismarck to Seattle

Compare and see reviews for airlines that fly from Bismarck to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $264Free CancellationRating
7.8
8,505 reviews
Search Delta flights
United AirlinesPriceFrom $310Free CancellationRating
7.4
10,111 reviews
Search United Airlines flights

Traveling to a place near Seattle?

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

Why use momondo?

Why should I use momondo to find a flight deal from Bismarck to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Bismarck to Seattle for you.

Can I find flights from Bismarck to Seattle with flexible booking policies on momondo?

All flight searches from Bismarck to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Bismarck to Seattle?

Once you have performed a search for Bismarck to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Bismarck to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Bismarck are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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