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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 2/3. 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
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
1:31 pm - 8:46 pm
BIS
-
SEA
9h 15m1 stop
Delta Logo
3:35 pm - 11:30 pm
SEA
-
BIS
5h 55m1 stop
$259Delta
Tue, Feb 3 - Sat, Feb 7
United Airlines Logo
9:00 am - 1:57 pm
BIS
-
SEA
6h 57m1 stop
United Airlines Logo
5:00 am - 12:51 pm
SEA
-
BIS
5h 51m1 stop
$288United Airlines
Sun, Jan 11 - Sat, Jan 17
United Airlines Logo
5:30 am - 3:44 pm
BIS
-
SEA
12h 14m2 stops
United Airlines Logo
5:00 am - 12:51 pm
SEA
-
BIS
5h 51m1 stop
$293United Airlines
Sun, Jan 11 - Sat, Jan 17
Delta Logo
1:31 pm - 6:40 am
BIS
-
SEA
19h 09m2 stops
Delta Logo
7:25 am - 11:30 pm
SEA
-
BIS
14h 05m2 stops
$318Delta
Tue, Feb 3 - Sat, Feb 7
Delta Logo
1:28 pm - 8:46 pm
BIS
-
SEA
9h 18m1 stop
Delta Logo
11:47 am - 8:19 pm
SEA
-
BIS
6h 32m1 stop
$319Delta
Thu, Mar 5 - Wed, Mar 11
United Airlines Logo
1:35 pm - 6:26 pm
BIS
-
SEA
6h 51m1 stop
United Airlines Logo
5:00 am - 12:51 pm
SEA
-
BIS
5h 51m1 stop
$339United Airlines
Tue, Feb 3 - Sat, Feb 7
United Airlines Logo
5:30 am - 3:54 pm
BIS
-
SEA
12h 24m2 stops
United Airlines Logo
5:00 am - 12:51 pm
SEA
-
BIS
5h 51m1 stop
$344United Airlines
Tue, Feb 3 - Sat, Feb 7
Delta Logo
7:20 am - 11:25 pm
BIS
-
SEA
18h 05m2 stops
Delta Logo
11:47 am - 8:19 pm
SEA
-
BIS
6h 32m1 stop
$357Delta
Wed, Mar 4 - Wed, Mar 11
Delta Logo
5:00 am - 10:55 am
BIS
-
SEA
7h 55m1 stop
Delta Logo
11:47 am - 8:19 pm
SEA
-
BIS
6h 32m1 stop
$379Delta
Wed, Mar 4 - Wed, Mar 11
Delta Logo
1:28 pm - 8:46 pm
BIS
-
SEA
9h 18m1 stop
Delta Logo
6:00 am - 4:15 pm
SEA
-
BIS
8h 15m1 stop
$391Delta
Thu, Mar 5 - Tue, Mar 10

Delta flights from Bismarck to Seattle

Our best Delta deals on Bismarck to Seattle flight tickets
Delta
Feb 3
BIS1:31 pmBismarck
9h 15m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
Feb 7
SEA3:35 pmSeattle/Tacoma Intl
5h 55m
1 stop
BIS11:30 pmBismarck
$259
Find similar
Delta
Feb 3
BIS1:31 pmBismarck
19h 09m
2 stops
SEA6:40 amSeattle/Tacoma Intl
Feb 7
SEA7:25 amSeattle/Tacoma Intl
14h 05m
2 stops
BIS11:30 pmBismarck
$318
Find similar
Delta
Mar 5
BIS1:28 pmBismarck
9h 18m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
Mar 11
SEA11:47 amSeattle/Tacoma Intl
6h 32m
1 stop
BIS8:19 pmBismarck
$319
Find similar

United Airlines flights from Bismarck to Seattle

Our best United Airlines deals on Bismarck to Seattle flight tickets
United Airlines
Jan 11
BIS9:00 amBismarck
6h 57m
1 stop
SEA1:57 pmSeattle/Tacoma Intl
Jan 17
SEA5:00 amSeattle/Tacoma Intl
5h 51m
1 stop
BIS12:51 pmBismarck
$288
Find similar
United Airlines
Jan 11
BIS5:30 amBismarck
12h 14m
2 stops
SEA3:44 pmSeattle/Tacoma Intl
Jan 17
SEA5:00 amSeattle/Tacoma Intl
5h 51m
1 stop
BIS12:51 pmBismarck
$293
Find similar
United Airlines
Feb 3
BIS1:35 pmBismarck
6h 51m
1 stop
SEA6:26 pmSeattle/Tacoma Intl
Feb 7
SEA5:00 amSeattle/Tacoma Intl
5h 51m
1 stop
BIS12:51 pmBismarck
$339
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 December 4, 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 2/3

1:31 pm-8:46 pm

1 stop9h 15m

Seattle/Tacoma Intl

Sat 2/7

3:35 pm-11:30 pm

1 stop5h 55m

$259

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Sun 1/11

9:00 am-1:57 pm

1 stop6h 57m

Seattle/Tacoma Intl

Sat 1/17

5:00 am-12:51 pm

1 stop5h 51m

$288

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Sun 1/11

5:30 am-3:44 pm

2 stops12h 14m

Seattle/Tacoma Intl

Sat 1/17

5:00 am-12:51 pm

1 stop5h 51m

$293

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 2/3

1:31 pm-6:40 am

2 stops19h 09m

Seattle/Tacoma Intl

Sat 2/7

7:25 am-11:30 pm

2 stops14h 05m

$318

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 3/5

1:28 pm-8:46 pm

1 stop9h 18m

Seattle/Tacoma Intl

Wed 3/11

11:47 am-8:19 pm

1 stop6h 32m

$319

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 2/3

1:35 pm-6:26 pm

1 stop6h 51m

Seattle/Tacoma Intl

Sat 2/7

5:00 am-12:51 pm

1 stop5h 51m

$339

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 2/3

5:30 am-3:54 pm

2 stops12h 24m

Seattle/Tacoma Intl

Sat 2/7

5:00 am-12:51 pm

1 stop5h 51m

$344

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Wed 3/4

7:20 am-11:25 pm

2 stops18h 05m

Seattle/Tacoma Intl

Wed 3/11

11:47 am-8:19 pm

1 stop6h 32m

$357

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Wed 3/4

5:00 am-10:55 am

1 stop7h 55m

Seattle/Tacoma Intl

Wed 3/11

11:47 am-8:19 pm

1 stop6h 32m

$379

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 3/5

1:28 pm-8:46 pm

1 stop9h 18m

Seattle/Tacoma Intl

Tue 3/10

6:00 am-4:15 pm

1 stop8h 15m

$391

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

6h 05m

Direct flights

None
The fastest flight from Bismarck to Seattle takes 6h 05m
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 11m, 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
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,066 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
Puyallup
Marysville
Tukwila
Redmond
Cle Elum
Federal Way
Lakewood
Fife
Centralia
Westport
Kirkland
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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