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Cheap flights from Washington to Bismarck from $126

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Bismarck departing on 10/7. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington to Bismarck

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:45 pm - 1:50 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
14h 05m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:30 pm - 9:42 amBIS  Bismarck-SEA Seattle/Tacoma Intl
22h 12m1 stop Las Vegas Harry Reid Intl
$314Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Delta Logo
2:05 pm - 11:12 pmGEG  Spokane-BIS Bismarck
7h 07m1 stop Minneapolis St Paul
Delta Logo
5:36 pm - 11:26 pmBIS  Bismarck-GEG Spokane
7h 50m1 stop Minneapolis St Paul
$319Delta
Fri, Sep 4 - Mon, Sep 7
Delta Logo
6:45 am - 4:56 pmGEG  Spokane-BIS Bismarck
8h 11m1 stop Minneapolis St Paul
Delta Logo
5:36 pm - 11:26 pmBIS  Bismarck-GEG Spokane
7h 50m1 stop Minneapolis St Paul
$319Delta
Tue, Sep 1 - Mon, Sep 7
Delta Logo
6:05 am - 2:25 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
6h 20m1 stop Minneapolis St Paul
Delta Logo
7:31 am - 12:30 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
6h 59m1 stop Minneapolis St Paul
$321Delta
Sat, Feb 6 - Wed, Feb 10
United Airlines Logo
2:27 pm - 11:43 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
7h 16m1 stop Denver Intl
United Airlines Logo
5:00 pm - 9:15 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
6h 15m1 stop Denver Intl
$325United Airlines
Thu, Sep 24 - Sat, Oct 3
United Airlines Logo
12:45 pm - 8:33 pmPDX  Portland-BIS Bismarck
5h 48m1 stop Denver Intl
United Airlines Logo
9:20 am - 3:05 pmBIS  Bismarck-PDX Portland
7h 45m1 stop Denver Intl
$325United Airlines
Fri, Sep 4 - Sat, Sep 12
United Airlines Logo
5:00 am - 12:56 pmPDX  Portland-BIS Bismarck
5h 56m1 stop Denver Intl
United Airlines Logo
9:20 am - 3:05 pmBIS  Bismarck-PDX Portland
7h 45m1 stop Denver Intl
$325United Airlines
Sun, Sep 6 - Sat, Sep 12
Multiple Airlines Logo
10:53 am - 1:50 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
24h 57m2 stops Ontario Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:30 pm - 9:42 amBIS  Bismarck-SEA Seattle/Tacoma Intl
22h 12m1 stop Las Vegas Harry Reid Intl
$327Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
9:45 pm - 9:25 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
21h 40m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
10:41 pm - 6:36 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
21h 55m2 stops Las Vegas Harry Reid Intl Los Angeles Los Angeles
$359Multiple Airlines
Wed, Sep 30 - Sun, Oct 4
Multiple Airlines Logo
9:45 pm - 9:25 pmSEA  Seattle/Tacoma Intl-BIS Bismarck
21h 40m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
10:41 pm - 6:28 pmBIS  Bismarck-SEA Seattle/Tacoma Intl
21h 47m1 stop Las Vegas Harry Reid Intl
$367Multiple Airlines
Wed, Sep 30 - Sun, Oct 4

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American Airlines flights from State of Washington to Bismarck

Our best American Airlines deals on State of Washington to Bismarck flight tickets
American Airlines
Sep 30
SEA11:57 pmSeattle/Tacoma Intl
11h 30m
2 stops
BIS1:27 pmBismarck
Oct 3
BIS1:57 pmBismarck
9h 55m
1 stop
SEA9:52 pmSeattle/Tacoma Intl
$437
American Airlines
Sep 18
SEA10:17 amSeattle/Tacoma Intl
10h 35m
1 stop
BIS10:52 pmBismarck
Sep 21
BIS1:57 pmBismarck
7h 51m
1 stop
SEA7:48 pmSeattle/Tacoma Intl
$450
American Airlines
Sep 30
SEA10:17 amSeattle/Tacoma Intl
10h 35m
1 stop
BIS10:52 pmBismarck
Oct 3
BIS1:57 pmBismarck
9h 55m
1 stop
SEA9:52 pmSeattle/Tacoma Intl
$456

United Airlines flights from State of Washington to Bismarck

Our best United Airlines deals on State of Washington to Bismarck flight tickets
United Airlines
Sep 24
SEA2:27 pmSeattle/Tacoma Intl
7h 16m
1 stop
BIS11:43 pmBismarck
Oct 3
BIS5:00 pmBismarck
6h 15m
1 stop
SEA9:15 pmSeattle/Tacoma Intl
$325
United Airlines
Sep 2
SEA3:54 pmSeattle/Tacoma Intl
5h 44m
1 stop
BIS11:38 pmBismarck
Sep 12
BIS9:20 amBismarck
13h 23m
2 stops
SEA8:43 pmSeattle/Tacoma Intl
$330
United Airlines
Aug 26
PDX4:07 pmPortland
5h 31m
1 stop
BIS11:38 pmBismarck
Aug 29
BIS9:00 amBismarck
11h 32m
2 stops
PDX6:32 pmPortland
$359

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 August 11, 2026.
Use the filters below to find and compare flights from Washington to Bismarck that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/9

9:45 pm-1:50 pm

1 stop14h 05m

Bismarck

Sun 9/20

1:30 pm-9:42 am

1 stop22h 12m

$314

SpokaneBismarck

GEG Spokane - BIS Bismarck

GEGBIS

Spokane

Fri 9/4

2:05 pm-11:12 pm

1 stop7h 07m

Bismarck

Mon 9/7

5:36 pm-11:26 pm

1 stop7h 50m

$319

SpokaneBismarck

GEG Spokane - BIS Bismarck

GEGBIS

Spokane

Tue 9/1

6:45 am-4:56 pm

1 stop8h 11m

Bismarck

Mon 9/7

5:36 pm-11:26 pm

1 stop7h 50m

$319
Quickest round-trip

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Sat 2/6

6:05 am-2:25 pm

1 stop6h 20m

Bismarck

Wed 2/10

7:31 am-12:30 pm

1 stop6h 59m

$321

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Thu 9/24

2:27 pm-11:43 pm

1 stop7h 16m

Bismarck

Sat 10/3

5:00 pm-9:15 pm

1 stop6h 15m

$325

PortlandBismarck

PDX Portland - BIS Bismarck

PDXBIS

Portland

Fri 9/4

12:45 pm-8:33 pm

1 stop5h 48m

Bismarck

Sat 9/12

9:20 am-3:05 pm

1 stop7h 45m

$325

PortlandBismarck

PDX Portland - BIS Bismarck

PDXBIS

Portland

Sun 9/6

5:00 am-12:56 pm

1 stop5h 56m

Bismarck

Sat 9/12

9:20 am-3:05 pm

1 stop7h 45m

$325

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/9

10:53 am-1:50 pm

2 stops24h 57m

Bismarck

Sun 9/20

1:30 pm-9:42 am

1 stop22h 12m

$327

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/30

9:45 pm-9:25 pm

1 stop21h 40m

Bismarck

Sun 10/4

10:41 pm-6:36 pm

2 stops21h 55m

$359

SeattleBismarck

SEA Seattle/Tacoma Intl - BIS Bismarck

SEABIS

Seattle/Tacoma Intl

Wed 9/30

9:45 pm-9:25 pm

1 stop21h 40m

Bismarck

Sun 10/4

10:41 pm-6:28 pm

1 stop21h 47m

$367

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bismarck from

How to get the cheapest flight ticket from State of Washington 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, November is the cheapest month to fly from State of Washington to Bismarck. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $343. If you aren’t able to travel during the month of November, then book flights to Bismarck from State of Washington during February instead. Flights to Bismarck in February, while not as cheap as those in November, still average around $380.

Cheap State of Washington to Bismarck flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Bismarck

Fastest flight time

5h 33m

Direct flights

None
The fastest flight from State of Washington to Bismarck takes 5h 33m
There are no direct flights from State of Washington to Bismarck. There are no popular flight routes from State of Washington to Bismarck.
Search flight deals

Frequently asked questions about flying from Washington to Bismarck

  • When did momondo last update prices for flights from Washington to Bismarck Airport?

    Prices for flights from Washington to Bismarck Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Bismarck Airport?

  • How old do you have to be to fly from Washington to Bismarck 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 Washington to Bismarck Airport.

  • What documentation or ID do you need to fly to Bismarck Airport?

    The necessary travel and health documents for your Bismarck Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Bismarck

Compare and see reviews for airlines that fly from State of Washington to Bismarck with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $248Free CancellationRating
7.8
8,505 reviews
Search Delta flights
United AirlinesPriceFrom $305Free CancellationRating
7.4
10,104 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Bismarck?

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 Washington to Bismarck for you.

Can I find flights from Washington to Bismarck with flexible booking policies on momondo?

Yes. All flights to Bismarck from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to Bismarck?

Once all potential Washington to Bismarck flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to Bismarck right now. Can momondo alert me if prices change?

Price alerts on flights to Bismarck from Washington 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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