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Cheap flights from Bismarck to Seattle 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 Bismarck to Seattle departing on 2/10. 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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Find the cheapest flights from Bismarck to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:00 am - 10:55 amBIS-SEA
7h 55m1 stop
Delta Logo
6:10 am - 4:41 pmSEA-BIS
8h 31m1 stop
$259Delta
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Tue, Feb 10 - Wed, Feb 18
United Airlines Logo
1:35 pm - 9:12 pmBIS-SEA
9h 37m2 stops
United Airlines Logo
5:00 am - 12:56 pmSEA-BIS
5h 56m1 stop
$264United Airlines
Find Deal
Tue, Feb 10 - Wed, Feb 18
Delta Logo
1:03 pm - 12:20 pmBIS-SEA
25h 17m2 stops
Delta Logo
6:05 am - 4:34 pmSEA-BIS
8h 29m1 stop
$298Delta
Find Deal
Tue, Jan 13 - Sat, Jan 17
Delta Logo
11:47 am - 5:00 pmBIS-SEA
7h 13m1 stop
Delta Logo
11:55 pm - 11:07 amSEA-BIS
9h 12m1 stop
$309Delta
Find Deal
Tue, Dec 9 - Sat, Dec 13
United Airlines Logo
1:50 pm - 11:15 pmBIS-SEA
11h 25m2 stops
United Airlines Logo
8:40 am - 4:25 pmSEA-BIS
5h 45m1 stop
$314United Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
United Airlines Logo
5:45 am - 3:29 pmBIS-SEA
11h 44m2 stops
United Airlines Logo
9:25 am - 11:08 pmSEA-BIS
11h 43m2 stops
$319United Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
United Airlines Logo
1:30 pm - 9:12 pmBIS-SEA
9h 42m2 stops
United Airlines Logo
5:00 am - 12:48 pmSEA-BIS
5h 48m1 stop
$325United Airlines
Find Deal
Tue, Apr 14 - Sun, Apr 19
Delta Logo
8:44 am - 8:48 pmBIS-SEA
14h 04m2 stops
Delta Logo
5:55 pm - 11:30 pmSEA-BIS
27h 35m2 stops
$338Delta
Find Deal
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
5:10 pm - 9:15 pmBIS-SEA
6h 05m1 stop
United Airlines Logo
5:00 am - 12:51 pmSEA-BIS
5h 51m1 stop
$339United Airlines
Find Deal
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
1:35 pm - 9:12 pmBIS-SEA
9h 37m2 stops
United Airlines Logo
12:37 pm - 11:43 pmSEA-BIS
9h 06m2 stops
$371United Airlines
Find Deal
Tue, Feb 10 - Wed, Feb 18

Delta flights from Bismarck to Seattle

Our best Delta deals on Bismarck to Seattle flight tickets
Delta
Feb 10
BIS5:00 amBismarck
7h 55m
1 stop
SEA10:55 amSeattle/Tacoma Intl
Feb 18
SEA6:10 amSeattle/Tacoma Intl
8h 31m
1 stop
BIS4:41 pmBismarck
$259
Find similar
Delta
Jan 13
BIS1:03 pmBismarck
25h 17m
2 stops
SEA12:20 pmSeattle/Tacoma Intl
Jan 17
SEA6:05 amSeattle/Tacoma Intl
8h 29m
1 stop
BIS4:34 pmBismarck
$298
Find similar
Delta
Dec 9
BIS11:47 amBismarck
7h 13m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Dec 13
SEA11:55 pmSeattle/Tacoma Intl
9h 12m
1 stop
BIS11:07 amBismarck
$309
Find similar

United Airlines flights from Bismarck to Seattle

Our best United Airlines deals on Bismarck to Seattle flight tickets
United Airlines
Feb 10
BIS1:35 pmBismarck
9h 37m
2 stops
SEA9:12 pmSeattle/Tacoma Intl
Feb 18
SEA5:00 amSeattle/Tacoma Intl
5h 56m
1 stop
BIS12:56 pmBismarck
$264
Find similar
United Airlines
Dec 9
BIS1:50 pmBismarck
11h 25m
2 stops
SEA11:15 pmSeattle/Tacoma Intl
Dec 13
SEA8:40 amSeattle/Tacoma Intl
5h 45m
1 stop
BIS4:25 pmBismarck
$314
Find similar
United Airlines
Dec 11
BIS5:45 amBismarck
11h 44m
2 stops
SEA3:29 pmSeattle/Tacoma Intl
Dec 15
SEA9:25 amSeattle/Tacoma Intl
11h 43m
2 stops
BIS11:08 pmBismarck
$319
Find similar

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 November 26, 2025.
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

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 2/10

5:00 am-10:55 am

1 stop7h 55m

Seattle/Tacoma Intl

Wed 2/18

6:10 am-4:41 pm

1 stop8h 31m

$259

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 2/10

1:35 pm-9:12 pm

2 stops9h 37m

Seattle/Tacoma Intl

Wed 2/18

5:00 am-12:56 pm

1 stop5h 56m

$264

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 1/13

1:03 pm-12:20 pm

2 stops25h 17m

Seattle/Tacoma Intl

Sat 1/17

6:05 am-4:34 pm

1 stop8h 29m

$298

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 12/9

11:47 am-5:00 pm

1 stop7h 13m

Seattle/Tacoma Intl

Sat 12/13

11:55 pm-11:07 am

1 stop9h 12m

$309

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 12/9

1:50 pm-11:15 pm

2 stops11h 25m

Seattle/Tacoma Intl

Sat 12/13

8:40 am-4:25 pm

1 stop5h 45m

$314

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 12/11

5:45 am-3:29 pm

2 stops11h 44m

Seattle/Tacoma Intl

Mon 12/15

9:25 am-11:08 pm

2 stops11h 43m

$319

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 4/14

1:30 pm-9:12 pm

2 stops9h 42m

Seattle/Tacoma Intl

Sun 4/19

5:00 am-12:48 pm

1 stop5h 48m

$325

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 1/13

8:44 am-8:48 pm

2 stops14h 04m

Seattle/Tacoma Intl

Sat 1/17

5:55 pm-11:30 pm

2 stops27h 35m

$338

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 1/13

5:10 pm-9:15 pm

1 stop6h 05m

Seattle/Tacoma Intl

Sat 1/17

5:00 am-12:51 pm

1 stop5h 51m

$339

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 2/10

1:35 pm-9:12 pm

2 stops9h 37m

Seattle/Tacoma Intl

Wed 2/18

12:37 pm-11:43 pm

2 stops9h 06m

$371

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest month to fly to Seattle?

In general, February 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 $317. If you don’t want to visit Seattle in February, then you should wait until July to fly from Bismarck, when ticket prices are also cheap, with an average price of $354.

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

On average, the least expensive day to fly to Seattle from Bismarck is on a Monday. momondo users have found tickets for Monday departures for as low as $575. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Bismarck because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $765.

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

Flying to Seattle from Bismarck at noon is the least expensive time of day to depart. momondo users have found prices as low as $578 when looking at flights departing at noon. Flights to Seattle are more costly in the afternoon, with an average ticket price of $692. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Bismarck to Seattle flights?

You could potentially save up to 5% on your flight if you consider stops on a Bismarck to Seattle flight.

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 55m

Direct flights

None
The fastest flight from Bismarck to Seattle takes 5h 55m
There are no direct flights from Bismarck to Seattle. There are no popular flight routes from Bismarck to Seattle.
Search flight deals

  • 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 6h 05m, 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 $258Free CancellationRating
7.9
7,999 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,046 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
Lynnwood
Kent
Marysville
Puyallup
Redmond
Tukwila
Cle Elum
Lakewood
Federal Way
Fife
Centralia
Kirkland
Westport
Shoreline

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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