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Cheap flights from Bismarck to Seattle from $309

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 11/24. 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.
United Airlines Logo
5:15 pm - 9:13 pmBIS-SEA
5h 58m1 stop
United Airlines Logo
3:45 pm - 11:08 pmSEA-BIS
5h 23m1 stop
$309United Airlines
Find Deal
Mon, Nov 24 - Tue, Dec 2
United Airlines Logo
5:30 am - 3:44 pmBIS-SEA
12h 14m2 stops
United Airlines Logo
5:00 am - 12:51 pmSEA-BIS
5h 51m1 stop
$324United Airlines
Find Deal
Wed, Jan 7 - Sun, Jan 11
United Airlines Logo
5:15 pm - 9:46 pmBIS-SEA
6h 31m1 stop
United Airlines Logo
3:45 pm - 11:08 pmSEA-BIS
5h 23m1 stop
$339United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
United Airlines Logo
8:00 am - 6:32 pmBIS-SEA
12h 32m2 stops
United Airlines Logo
3:45 pm - 11:08 pmSEA-BIS
5h 23m1 stop
$344United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
United Airlines Logo
5:45 am - 9:55 amBIS-SEA
6h 10m1 stop
United Airlines Logo
5:00 am - 12:51 pmSEA-BIS
5h 51m1 stop
$365United Airlines
Find Deal
Thu, Dec 25 - Fri, Jan 9
United Airlines Logo
5:45 am - 9:55 amBIS-SEA
6h 10m1 stop
United Airlines Logo
9:25 am - 11:30 pmSEA-BIS
12h 05m2 stops
$370United Airlines
Find Deal
Thu, Dec 25 - Fri, Jan 9
United Airlines Logo
1:56 pm - 12:59 amBIS-SEA
13h 03m2 stops
United Airlines Logo
3:45 pm - 11:08 pmSEA-BIS
5h 23m1 stop
$376United Airlines
Find Deal
Mon, Nov 24 - Tue, Dec 2
United Airlines Logo
5:30 am - 9:49 amBIS-SEA
6h 19m1 stop
United Airlines Logo
8:30 am - 4:22 pmSEA-BIS
5h 52m1 stop
$394United Airlines
Find Deal
Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
1:43 pm - 12:59 amBIS-SEA
13h 16m2 stops
United Airlines Logo
5:07 am - 12:48 pmSEA-BIS
5h 41m1 stop
$400United Airlines
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Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
1:43 pm - 11:30 pmBIS-SEA
11h 47m2 stops
United Airlines Logo
9:19 am - 11:37 pmSEA-BIS
12h 18m2 stops
$405United Airlines
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Tue, Mar 3 - Sat, Mar 7

Delta flights from Bismarck to Seattle

Our best Delta deals on Bismarck to Seattle flight tickets
Delta
Dec 25
BIS11:18 amBismarck
6h 33m
1 stop
SEA3:51 pmSeattle/Tacoma Intl
Jan 10
SEA3:35 pmSeattle/Tacoma Intl
5h 53m
1 stop
BIS11:28 pmBismarck
$419
Find similar
Delta
Dec 24
BIS1:28 pmBismarck
9h 17m
1 stop
SEA8:45 pmSeattle/Tacoma Intl
Dec 29
SEA12:55 amSeattle/Tacoma Intl
7h 43m
1 stop
BIS10:38 amBismarck
$768
Find similar
Delta
Nov 18
BIS5:35 pmBismarck
8h 26m
1 stop
SEA12:01 amSeattle/Tacoma Intl
Nov 21
SEA1:49 pmSeattle/Tacoma Intl
7h 37m
1 stop
BIS11:26 pmBismarck
$847
Find similar

United Airlines flights from Bismarck to Seattle

Our best United Airlines deals on Bismarck to Seattle flight tickets
United Airlines
Nov 24
BIS5:15 pmBismarck
5h 58m
1 stop
SEA9:13 pmSeattle/Tacoma Intl
Dec 2
SEA3:45 pmSeattle/Tacoma Intl
5h 23m
1 stop
BIS11:08 pmBismarck
$309
Find similar
United Airlines
Jan 7
BIS5:30 amBismarck
12h 14m
2 stops
SEA3:44 pmSeattle/Tacoma Intl
Jan 11
SEA5:00 amSeattle/Tacoma Intl
5h 51m
1 stop
BIS12:51 pmBismarck
$324
Find similar
United Airlines
Dec 4
BIS5:15 pmBismarck
6h 31m
1 stop
SEA9:46 pmSeattle/Tacoma Intl
Dec 9
SEA3:45 pmSeattle/Tacoma Intl
5h 23m
1 stop
BIS11:08 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 November 13, 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

Mon 11/24

5:15 pm-9:13 pm

1 stop5h 58m

Seattle/Tacoma Intl

Tue 12/2

3:45 pm-11:08 pm

1 stop5h 23m

$309

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Wed 1/7

5:30 am-3:44 pm

2 stops12h 14m

Seattle/Tacoma Intl

Sun 1/11

5:00 am-12:51 pm

1 stop5h 51m

$324

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 12/4

5:15 pm-9:46 pm

1 stop6h 31m

Seattle/Tacoma Intl

Tue 12/9

3:45 pm-11:08 pm

1 stop5h 23m

$339

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 12/4

8:00 am-6:32 pm

2 stops12h 32m

Seattle/Tacoma Intl

Tue 12/9

3:45 pm-11:08 pm

1 stop5h 23m

$344

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 12/25

5:45 am-9:55 am

1 stop6h 10m

Seattle/Tacoma Intl

Fri 1/9

5:00 am-12:51 pm

1 stop5h 51m

$365

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Thu 12/25

5:45 am-9:55 am

1 stop6h 10m

Seattle/Tacoma Intl

Fri 1/9

9:25 am-11:30 pm

2 stops12h 05m

$370

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Mon 11/24

1:56 pm-12:59 am

2 stops13h 03m

Seattle/Tacoma Intl

Tue 12/2

3:45 pm-11:08 pm

1 stop5h 23m

$376

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

5:30 am-9:49 am

1 stop6h 19m

Seattle/Tacoma Intl

Sat 3/7

8:30 am-4:22 pm

1 stop5h 52m

$394

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

1:43 pm-12:59 am

2 stops13h 16m

Seattle/Tacoma Intl

Sat 3/7

5:07 am-12:48 pm

1 stop5h 41m

$400

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

1:43 pm-11:30 pm

2 stops11h 47m

Seattle/Tacoma Intl

Sat 3/7

9:19 am-11:37 pm

2 stops12h 18m

$405

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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?

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.

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

Direct flights

None
There are no direct flights from Bismarck to Seattle. There are no popular flight routes from Bismarck to Seattle.
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  • 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 58m, 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
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,017 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
Redmond
Tukwila
Lakewood
Federal Way
Fife
Cle Elum
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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