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Cheap flights from Bismarck to Seattle from $271

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Bismarck to Seattle 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
0 bags

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Find the cheapest flights from Bismarck to Seattle

Cheap round-trip flights

Delta Logo
1:10 pm - 8:32 pmBIS-SEA
9h 22m1 stop
Delta Logo
6:05 am - 4:53 pmSEA-BIS
8h 48m1 stop
$314Delta
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Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
6:30 pm - 11:05 pmBIS-SEA
6h 35m1 stop
United Airlines Logo
9:25 am - 11:37 pmSEA-BIS
12h 12m2 stops
$344United Airlines
Find Deal
Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
6:30 pm - 11:05 pmBIS-SEA
6h 35m1 stop
United Airlines Logo
8:30 am - 4:22 pmSEA-BIS
5h 52m1 stop
$381United Airlines
Find Deal
Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
5:10 pm - 11:29 pmBIS-SEA
8h 19m1 stop
United Airlines Logo
5:00 am - 1:00 pmSEA-BIS
6h 00m1 stop
$426United Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
United Airlines Logo
1:30 pm - 9:01 pmBIS-SEA
9h 31m2 stops
United Airlines Logo
9:25 am - 11:37 pmSEA-BIS
12h 12m2 stops
$466United Airlines
Find Deal
Tue, Mar 3 - Sat, Mar 7
American Airlines Logo
3:07 pm - 11:09 pmBIS-SEA
10h 02m1 stop
American Airlines Logo
1:35 am - 12:38 pmSEA-BIS
9h 03m1 stop
$475American Airlines
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Tue, Mar 3 - Fri, Mar 6
United Airlines Logo
5:10 pm - 11:29 pmBIS-SEA
8h 19m1 stop
United Airlines Logo
5:31 pm - 11:39 pmSEA-BIS
28h 08m2 stops
$507United Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Delta Logo
7:30 am - 12:58 pmBIS-SEA
7h 28m1 stop
Delta Logo
11:55 pm - 10:40 amSEA-BIS
8h 45m1 stop
$541Delta
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Wed, Oct 22 - Wed, Oct 22
American Airlines Logo
6:34 am - 6:34 pmBIS-SEA
14h 00m2 stops
American Airlines Logo
1:35 am - 12:38 pmSEA-BIS
9h 03m1 stop
$551American Airlines
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Tue, Mar 3 - Fri, Mar 6
American Airlines Logo
2:28 pm - 9:18 pmBIS-SEA
8h 50m1 stop
American Airlines Logo
12:59 am - 12:25 pmSEA-BIS
9h 26m1 stop
$781American Airlines
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Fri, Nov 21 - Sat, Nov 29

United Airlines flights from Bismarck to Seattle

Our best United Airlines deals on Bismarck to Seattle flight tickets
United Airlines
Mar 3
BIS6:30 pmBismarck
6h 35m
1 stop
SEA11:05 pmSeattle/Tacoma Intl
Mar 7
SEA9:25 amSeattle/Tacoma Intl
12h 12m
2 stops
BIS11:37 pmBismarck
$344
Find similar
United Airlines
Sep 18
BIS1:55 pmBismarck
5h 56m
1 stop
SEA5:51 pmSeattle/Tacoma Intl
Sep 20
SEA7:00 amSeattle/Tacoma Intl
11h 46m
2 stops
BIS8:46 pmBismarck
$371
Find similar
United Airlines
Sep 18
BIS1:55 pmBismarck
8h 59m
2 stops
SEA8:54 pmSeattle/Tacoma Intl
Sep 20
SEA7:00 amSeattle/Tacoma Intl
11h 46m
2 stops
BIS8:46 pmBismarck
$376
Find similar

Delta flights from Bismarck to Seattle

Our best Delta deals on Bismarck to Seattle flight tickets
Delta
Mar 3
BIS1:10 pmBismarck
9h 22m
1 stop
SEA8:32 pmSeattle/Tacoma Intl
Mar 7
SEA6:05 amSeattle/Tacoma Intl
8h 48m
1 stop
BIS4:53 pmBismarck
$314
Find similar
Delta
Oct 22
BIS7:30 amBismarck
7h 28m
1 stop
SEA12:58 pmSeattle/Tacoma Intl
Oct 22
SEA11:55 pmSeattle/Tacoma Intl
8h 45m
1 stop
BIS10:40 amBismarck
$541
Find similar
Delta
Dec 18
BIS1:27 pmBismarck
9h 08m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
Dec 28
SEA12:59 amSeattle/Tacoma Intl
7h 39m
1 stop
BIS10:38 amBismarck
$685
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 September 16, 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 3/3

1:10 pm-8:32 pm

1 stop9h 22m

Seattle/Tacoma Intl

Sat 3/7

6:05 am-4:53 pm

1 stop8h 48m

$314

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

6:30 pm-11:05 pm

1 stop6h 35m

Seattle/Tacoma Intl

Sat 3/7

9:25 am-11:37 pm

2 stops12h 12m

$344

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

6:30 pm-11:05 pm

1 stop6h 35m

Seattle/Tacoma Intl

Sat 3/7

8:30 am-4:22 pm

1 stop5h 52m

$381

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Mon 10/13

5:10 pm-11:29 pm

1 stop8h 19m

Seattle/Tacoma Intl

Mon 10/20

5:00 am-1:00 pm

1 stop6h 00m

$426

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

1:30 pm-9:01 pm

2 stops9h 31m

Seattle/Tacoma Intl

Sat 3/7

9:25 am-11:37 pm

2 stops12h 12m

$466

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

3:07 pm-11:09 pm

1 stop10h 02m

Seattle/Tacoma Intl

Fri 3/6

1:35 am-12:38 pm

1 stop9h 03m

$475

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Mon 10/13

5:10 pm-11:29 pm

1 stop8h 19m

Seattle/Tacoma Intl

Mon 10/20

5:31 pm-11:39 pm

2 stops28h 08m

$507

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Wed 10/22

7:30 am-12:58 pm

1 stop7h 28m

Seattle/Tacoma Intl

Wed 10/22

11:55 pm-10:40 am

1 stop8h 45m

$541

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Tue 3/3

6:34 am-6:34 pm

2 stops14h 00m

Seattle/Tacoma Intl

Fri 3/6

1:35 am-12:38 pm

1 stop9h 03m

$551

BismarckSeattle

BIS - SEA

BISSEA

Bismarck

Fri 11/21

2:28 pm-9:18 pm

1 stop8h 50m

Seattle/Tacoma Intl

Sat 11/29

12:59 am-12:25 pm

1 stop9h 26m

$781

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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, October 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 $288. If you don’t want to visit Seattle in October, then you should wait until February to fly from Bismarck, when ticket prices are also cheap, with an average price of $317.

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 16% 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

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 59m, 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 $227Free CancellationRating
7.9
7,954 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Kirkland
Tukwila
Shoreline
Lakewood
Centralia
Fife
Cle Elum
Redmond
Westport

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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