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Cheap flights from Seattle to Bismarck from $135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bismarck departing on 10/21. 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

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Find the cheapest flights from Seattle to Bismarck

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:45 pm - 1:50 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
14h 05m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:30 pm - 9:42 amBIS  Bismarck-SEA Seattle/Tacoma Intl
22h 12m1 stop Las Vegas Harry Reid Intl
$307Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
10:53 am - 1:50 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
24h 57m2 stops Ontario Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:30 pm - 9:42 amBIS  Bismarck-SEA Seattle/Tacoma Intl
22h 12m1 stop Las Vegas Harry Reid Intl
$318Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Delta Logo
11:59 pm - 10:32 amSEA  Seattle/Tacoma Intl-BIS Bismarck
8h 33m1 stop Minneapolis St Paul
Delta Logo
9:40 am - 4:45 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
9h 05m1 stop Minneapolis St Paul
$321Delta
Tue, Sep 8 - Sat, Sep 19
Delta Logo
11:59 pm - 10:30 amSEA  Seattle/Tacoma Intl-BIS Bismarck
8h 31m1 stop Minneapolis St Paul
Delta Logo
5:40 pm - 11:55 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
8h 15m1 stop Minneapolis St Paul
$321Delta
Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
2:34 pm - 11:38 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
7h 04m1 stop Denver Intl
United Airlines Logo
6:00 am - 10:01 amBIS  Bismarck-SEA Seattle/Tacoma Intl
6h 01m1 stop Denver Intl
$325United Airlines
Wed, Sep 2 - Tue, Sep 15
United Airlines Logo
3:49 pm - 11:46 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
5h 57m1 stop Denver Intl
United Airlines Logo
5:50 am - 9:47 amBIS  Bismarck-SEA Seattle/Tacoma Intl
5h 57m1 stop Denver Intl
$325United Airlines
Fri, Oct 30 - Tue, Nov 3
Delta Logo
8:59 am - 4:56 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
5h 57m1 stop Minneapolis St Paul
Delta Logo
5:40 pm - 11:55 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
8h 15m1 stop Minneapolis St Paul
$325Delta
Wed, Sep 2 - Tue, Sep 15
United Airlines Logo
3:54 pm - 11:38 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
5h 44m1 stop Denver Intl
United Airlines Logo
6:00 am - 2:24 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
10h 24m2 stops Denver Intl San Francisco
$330United Airlines
Wed, Sep 2 - Tue, Sep 15
Multiple Airlines Logo
11:06 am - 10:59 amSEA  Seattle/Tacoma Intl-BIS Bismarck
21h 53m2 stops Los Angeles Phoenix Sky Harbor Intl
Multiple Airlines Logo
10:44 pm - 10:00 amBIS  Bismarck-SEA Seattle/Tacoma Intl
13h 16m1 stop Las Vegas Harry Reid Intl
$347Multiple Airlines
Thu, Nov 5 - Thu, Nov 12
American Airlines Logo
10:17 am - 10:52 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
10h 35m1 stop Dallas/Fort Worth
American Airlines Logo
7:12 am - 2:51 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
9h 39m1 stop Dallas/Fort Worth
$389American Airlines
Thu, Oct 1 - Sun, Oct 4

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United Airlines flights from Seattle to Bismarck

Our best United Airlines deals on Seattle to Bismarck flight tickets
United Airlines
Sep 1
SEA7:11 amSeattle/Tacoma Intl
11h 22m
2 stops
BIS8:33 pmBismarck
Sep 8
BIS6:00 amBismarck
7h 57m
1 stop
SEA11:57 amSeattle/Tacoma Intl
$326
United Airlines
Sep 2
SEA3:54 pmSeattle/Tacoma Intl
5h 44m
1 stop
BIS11:38 pmBismarck
Sep 15
BIS6:00 amBismarck
10h 24m
2 stops
SEA2:24 pmSeattle/Tacoma Intl
$330
United Airlines
Sep 2
SEA1:16 pmSeattle/Tacoma Intl
8h 22m
2 stops
BIS11:38 pmBismarck
Sep 15
BIS6:00 amBismarck
10h 24m
2 stops
SEA2:24 pmSeattle/Tacoma Intl
$335

Delta flights from Seattle to Bismarck

Our best Delta deals on Seattle to Bismarck flight tickets
Delta
Sep 1
SEA11:59 pmSeattle/Tacoma Intl
8h 31m
1 stop
BIS10:30 amBismarck
Sep 8
BIS5:40 pmBismarck
8h 15m
1 stop
SEA11:55 pmSeattle/Tacoma Intl
$321
Delta
Sep 2
SEA8:59 amSeattle/Tacoma Intl
5h 57m
1 stop
BIS4:56 pmBismarck
Sep 15
BIS5:40 pmBismarck
8h 15m
1 stop
SEA11:55 pmSeattle/Tacoma Intl
$325
Delta
Nov 5
SEA6:00 amSeattle/Tacoma Intl
8h 26m
1 stop
BIS4:26 pmBismarck
Nov 12
BIS5:42 pmBismarck
8h 17m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$329

momondo 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, momondo users made 832,500 searches. Data last updated August 6, 2026.
Use the filters below to find and compare flights from Seattle to Bismarck that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/9

9:45 pm-1:50 pm

1 stop14h 05m

Bismarck

Sun 9/20

1:30 pm-9:42 am

1 stop22h 12m

$307

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/9

10:53 am-1:50 pm

2 stops24h 57m

Bismarck

Sun 9/20

1:30 pm-9:42 am

1 stop22h 12m

$318

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Tue 9/8

11:59 pm-10:32 am

1 stop8h 33m

Bismarck

Sat 9/19

9:40 am-4:45 pm

1 stop9h 05m

$321

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Tue 9/1

11:59 pm-10:30 am

1 stop8h 31m

Bismarck

Tue 9/8

5:40 pm-11:55 pm

1 stop8h 15m

$321

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/2

2:34 pm-11:38 pm

1 stop7h 04m

Bismarck

Tue 9/15

6:00 am-10:01 am

1 stop6h 01m

$325
Quickest round-trip

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Fri 10/30

3:49 pm-11:46 pm

1 stop5h 57m

Bismarck

Tue 11/3

5:50 am-9:47 am

1 stop5h 57m

$325

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/2

8:59 am-4:56 pm

1 stop5h 57m

Bismarck

Tue 9/15

5:40 pm-11:55 pm

1 stop8h 15m

$325

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/2

3:54 pm-11:38 pm

1 stop5h 44m

Bismarck

Tue 9/15

6:00 am-2:24 pm

2 stops10h 24m

$330

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Thu 11/5

11:06 am-10:59 am

2 stops21h 53m

Bismarck

Thu 11/12

10:44 pm-10:00 am

1 stop13h 16m

$347

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Thu 10/1

10:17 am-10:52 pm

1 stop10h 35m

Bismarck

Sun 10/4

7:12 am-2:51 pm

1 stop9h 39m

$389

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bismarck from

How to get the cheapest flight ticket from Seattle to Bismarck

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 Seattle and Bismarck?

Prices are currently low for flights on this route.

Typical prices usually range from $428 to $589.
The lowest price recently found on this route was $307.

What is the cheapest month to fly to Bismarck?

In general, December is the cheapest month to fly from Seattle to Bismarck. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel during the month of December, then book flights to Bismarck from Seattle during November instead. Flights to Bismarck in November, while not as cheap as those in December, still average around $0.

When to book flights from Seattle to Bismarck

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

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

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

Fastest flight time

5h 57m

Direct flights

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

Frequently asked questions about flying from Seattle to Bismarck

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

    A flight from Seattle/Tacoma Intl to Bismarck will travel around 1009.3 mi. Typically, this will take 5h 57m by plane in normal conditions.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Bismarck Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Bismarck Airport.

  • What documentation or ID do you need to fly to Bismarck Airport?

    The travel and health documents required for your trip to Bismarck Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bismarck Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Seattle to Bismarck

Compare and see reviews for airlines that fly from Seattle to Bismarck with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $294Free CancellationRating
7.4
10,073 reviews
Search United Airlines flights
DeltaPriceFrom $343Free CancellationRating
7.8
8,492 reviews
Search Delta flights

Why use momondo?

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

It is quick and easy to find Seattle to Bismarck flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bismarck that suits you.

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

Yes. momondo enables you to select and highlight flights to Bismarck from Seattle with this policy.

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

momondo provides multiple filters to help you find the best flight to Bismarck from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Bismarck from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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