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Cheap flights from Seattle to Bismarck from $259

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bismarck departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Delta Logo
3:35 pm - 11:22 pmSEA-BIS
5h 47m1 stop
Delta Logo
5:00 am - 12:25 pmBIS-SEA
9h 25m1 stop
$259Delta
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Wed, Apr 1 - Sun, Apr 5
Delta Logo
12:00 pm - 8:07 pmSEA-BIS
6h 07m1 stop
Delta Logo
5:00 am - 12:25 pmBIS-SEA
9h 25m1 stop
$299Delta
Find Deal
Wed, Apr 1 - Sun, Apr 5
United Airlines Logo
12:00 pm - 8:51 pmSEA-BIS
6h 51m1 stop
United Airlines Logo
5:15 pm - 9:13 pmBIS-SEA
5h 58m1 stop
$309United Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
United Airlines Logo
1:20 pm - 11:39 pmSEA-BIS
8h 19m2 stops
United Airlines Logo
5:15 pm - 9:13 pmBIS-SEA
5h 58m1 stop
$314United Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
Delta Logo
12:00 pm - 8:07 pmSEA-BIS
6h 07m1 stop
Delta Logo
7:31 am - 12:25 pmBIS-SEA
6h 54m1 stop
$329Delta
Find Deal
Wed, Apr 1 - Sun, Apr 5
United Airlines Logo
9:25 am - 11:39 pmSEA-BIS
12h 14m2 stops
United Airlines Logo
5:15 pm - 12:59 amBIS-SEA
9h 44m2 stops
$370United Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
Multiple Airlines Logo
12:51 pm - 11:00 amSEA-BIS
20h 09m2 stops
Multiple Airlines Logo
1:06 pm - 10:06 amBIS-SEA
23h 00m1 stop
$473Multiple Airlines
Find Deal
Wed, Nov 26 - Wed, Dec 3
American Airlines Logo
12:59 am - 12:25 pmSEA-BIS
9h 26m1 stop
American Airlines Logo
2:52 pm - 11:38 pmBIS-SEA
10h 46m1 stop
$509American Airlines
Find Deal
Tue, Nov 25 - Wed, Dec 3
Multiple Airlines Logo
1:37 pm - 10:41 amSEA-BIS
19h 04m2 stops
Multiple Airlines Logo
4:36 pm - 1:22 pmBIS-SEA
22h 46m1 stop
$519Multiple Airlines
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Wed, Nov 19 - Fri, Nov 28
American Airlines Logo
1:33 am - 12:36 pmSEA-BIS
9h 03m1 stop
American Airlines Logo
6:44 am - 12:31 pmBIS-SEA
7h 47m1 stop
$590American Airlines
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Tue, Mar 31 - Sun, Apr 5

United Airlines flights from Seattle to Bismarck

Our best United Airlines deals on Seattle to Bismarck flight tickets
United Airlines
Nov 18
SEA12:00 pmSeattle/Tacoma Intl
6h 51m
1 stop
BIS8:51 pmBismarck
Nov 22
BIS5:15 pmBismarck
5h 58m
1 stop
SEA9:13 pmSeattle/Tacoma Intl
$309
Find similar
United Airlines
Nov 18
SEA1:20 pmSeattle/Tacoma Intl
8h 19m
2 stops
BIS11:39 pmBismarck
Nov 22
BIS5:15 pmBismarck
5h 58m
1 stop
SEA9:13 pmSeattle/Tacoma Intl
$314
Find similar
United Airlines
Nov 18
SEA9:25 amSeattle/Tacoma Intl
12h 14m
2 stops
BIS11:39 pmBismarck
Nov 22
BIS5:15 pmBismarck
9h 44m
2 stops
SEA12:59 amSeattle/Tacoma Intl
$370
Find similar

American Airlines flights from Seattle to Bismarck

Our best American Airlines deals on Seattle to Bismarck flight tickets
American Airlines
Nov 25
SEA12:59 amSeattle/Tacoma Intl
9h 26m
1 stop
BIS12:25 pmBismarck
Dec 3
BIS2:52 pmBismarck
10h 46m
1 stop
SEA11:38 pmSeattle/Tacoma Intl
$509
Find similar
American Airlines
Nov 7
SEA10:35 amSeattle/Tacoma Intl
9h 47m
1 stop
BIS10:22 pmBismarck
Nov 9
BIS2:58 pmBismarck
10h 07m
1 stop
SEA11:05 pmSeattle/Tacoma Intl
$580
Find similar
American Airlines
Mar 31
SEA1:33 amSeattle/Tacoma Intl
9h 03m
1 stop
BIS12:36 pmBismarck
Apr 5
BIS6:44 amBismarck
7h 47m
1 stop
SEA12:31 pmSeattle/Tacoma Intl
$590
Find similar

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 November 4, 2025.
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

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Wed 4/1

3:35 pm-11:22 pm

1 stop5h 47m

Bismarck

Sun 4/5

5:00 am-12:25 pm

1 stop9h 25m

$259

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Wed 4/1

12:00 pm-8:07 pm

1 stop6h 07m

Bismarck

Sun 4/5

5:00 am-12:25 pm

1 stop9h 25m

$299

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 11/18

12:00 pm-8:51 pm

1 stop6h 51m

Bismarck

Sat 11/22

5:15 pm-9:13 pm

1 stop5h 58m

$309

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 11/18

1:20 pm-11:39 pm

2 stops8h 19m

Bismarck

Sat 11/22

5:15 pm-9:13 pm

1 stop5h 58m

$314

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Wed 4/1

12:00 pm-8:07 pm

1 stop6h 07m

Bismarck

Sun 4/5

7:31 am-12:25 pm

1 stop6h 54m

$329

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 11/18

9:25 am-11:39 pm

2 stops12h 14m

Bismarck

Sat 11/22

5:15 pm-12:59 am

2 stops9h 44m

$370

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Wed 11/26

12:51 pm-11:00 am

2 stops20h 09m

Bismarck

Wed 12/3

1:06 pm-10:06 am

1 stop23h 00m

$473

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 11/25

12:59 am-12:25 pm

1 stop9h 26m

Bismarck

Wed 12/3

2:52 pm-11:38 pm

1 stop10h 46m

$509

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Wed 11/19

1:37 pm-10:41 am

2 stops19h 04m

Bismarck

Fri 11/28

4:36 pm-1:22 pm

1 stop22h 46m

$519

SeattleBismarck

SEA - BIS

SEABIS

Seattle/Tacoma Intl

Tue 3/31

1:33 am-12:36 pm

1 stop9h 03m

Bismarck

Sun 4/5

6:44 am-12:31 pm

1 stop7h 47m

$590

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest month to fly to Bismarck?

In general, March 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 $266. If you aren’t able to travel during the month of March, then book flights to Bismarck from Seattle during January instead. Flights to Bismarck in January, while not as cheap as those in March, still average around $318.

What is the cheapest day to depart on your flight to Bismarck?

The cheapest day to depart from Seattle to Bismarck is on a Wednesday. Travelers who choose to depart for Bismarck on a Wednesday will often find tickets for as low as $548. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $768. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bismarck.

What is the cheapest time of day to depart on your flight to Bismarck?

According to our data, the cheapest time of day to fly to Bismarck is in the evening. momondo users have found flights departing from Seattle to Bismarck in the evening for as low as $617. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the afternoon because they tend to be around $725. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights

None
There are no direct flights from Seattle to Bismarck. There are no popular flight routes from Seattle to Bismarck.
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  • 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 47m 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
DeltaPriceFrom $258Free CancellationRating
7.9
8,003 reviews
Search Delta flights
American AirlinesPriceFrom $328Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $358Free CancellationRating
7.4
9,002 reviews
Search United Airlines 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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