$195+ Cheap flights from Seattle to Bismarck (SEA - BIS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIS
Oct 23 — Oct 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Bismarck with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Bismarck
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to BismarckExplore the most affordable flight options available from Seattle to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
Explore the most affordable flight options available from Seattle to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop8h 40m
Wed 12/93:45 pm -
1 stop7h 04m
Deal found 9/21![Delta logo]()
$341
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Tue 10/275:00 am -
1 stop7h 59m
Deal found 9/23![Delta logo]()
$345
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Fri 10/305:39 pm -
1 stop8h 20m
Deal found 9/22![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/301:16 pm -
2 stops8h 30m
Sat 11/75:50 am -
1 stop5h 57m
Deal found 9/22![United Airlines logo]()
$350
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:49 pm -
1 stop5h 57m
Sun 11/85:50 am -
2 stops10h 49m
Deal found 9/21![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 am -
1 stop8h 26m
Sun 11/85:39 pm -
1 stop8h 40m
Deal found 9/21![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:00 am -
1 stop6h 01m
Fri 10/305:02 pm -
1 stop6h 17m
Deal found 9/21![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:16 pm -
2 stops8h 30m
Thu 11/125:50 am -
1 stop5h 57m
Deal found 9/22![United Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:05 am -
1 stop5h 22m
Thu 11/125:50 am -
2 stops12h 37m
Deal found 9/22![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:27 pm -
1 stop7h 16m
Tue 10/275:50 am -
1 stop5h 57m
Deal found 9/18![United Airlines logo]()
$401
Best flights from Seattle to BismarckDiscover carefully curated flight deals from Seattle to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Seattle to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Fri 10/305:39 pm -
1 stop8h 20m
Deal found 9/22![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:00 am -
1 stop6h 01m
Fri 10/305:02 pm -
1 stop6h 17m
Deal found 9/21![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:16 pm -
2 stops8h 30m
Thu 11/125:50 am -
1 stop5h 57m
Deal found 9/22![United Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am -
1 stop6h 38m
Thu 10/2212:40 pm -
1 stop6h 18m
Deal found 9/20![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:27 pm -
1 stop7h 16m
Tue 10/275:50 am -
1 stop5h 57m
Deal found 9/18![United Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/33:51 pm -
1 stop6h 00m
Sat 2/61:08 pm -
1 stop7h 01m
Deal found 9/19![United Airlines logo]()
$451
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Tue 10/275:00 am -
1 stop7h 59m
Deal found 9/19![Delta logo]()
$500
Last-minute flights from Seattle to BismarckDiscover last-minute flight deals from Seattle to Bismarck. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Bismarck. Data last updated September 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am -
1 stop6h 38m
Fri 10/235:39 pm -
1 stop8h 20m
Deal found 9/22![Delta logo]()
$404
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Tue 10/275:00 am -
1 stop7h 59m
Deal found 9/23![Delta logo]()
$345
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Fri 10/305:39 pm -
1 stop8h 20m
Deal found 9/22![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:27 pm -
1 stop7h 16m
Tue 10/275:50 am -
1 stop5h 57m
Deal found 9/18![United Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:27 pm -
1 stop7h 16m
Fri 10/305:02 pm -
2 stops9h 57m
Deal found 9/22![United Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:00 am -
1 stop6h 01m
Fri 10/305:02 pm -
1 stop6h 17m
Deal found 9/21![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/301:16 pm -
2 stops8h 30m
Sat 11/75:50 am -
1 stop5h 57m
Deal found 9/22![United Airlines logo]()
$350
One-way flights from Seattle to BismarckSearch for one-way flight options from Seattle to Bismarck. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Seattle to Bismarck. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:03 am -
2 stops9h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:50 am -
2 stops9h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop6h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/199:02 am -
2 stops12h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![United Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:05 am -
2 stops12h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$368
This American Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:59 pm -
2 stops11h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![American Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/199:40 pm -
3 stops36h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/54:39 pm -
3 stops29h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$613
Find flight deals from Seattle to Bismarck
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bismarck (BIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $341 (Delta) |
One-way from | $195 (Kiwi.com) |
Popular in | July |
Cheapest in | December |
Average price | $408 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
Use the filters below to find and compare flights from Seattle to Bismarck that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Thu 10/22
10:03 am-9:46 pm
2 stops9h 43m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$195
Quickest round-trip
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Fri 10/23
6:00 am-2:38 pm
1 stop6h 38m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$319
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Thu 11/5
10:27 am-9:46 pm
1 stop9h 19m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$319
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Thu 10/22
12:04 pm-10:59 pm
1 stop8h 55m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$319
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Tue 1/19
9:02 am-11:51 pm
2 stops12h 49m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$324
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Fri 10/23
6:00 am-2:38 pm
1 stop6h 38m
Bismarck
Fri 10/30
5:39 pm-11:59 pm
1 stop8h 20m
$349
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Fri 10/23
9:05 am-11:43 pm
2 stops12h 38m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$368
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Sat 10/24
5:00 am-1:01 pm
1 stop6h 01m
Bismarck
Fri 10/30
5:02 pm-9:19 pm
1 stop6h 17m
$384
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Fri 10/23
11:59 pm-1:37 pm
2 stops11h 38m
Bismarck
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$385
SeattleBismarck
SEA Seattle/Tacoma Intl - BIS Bismarck
SEABIS
Seattle/Tacoma Intl
Fri 11/6
1:16 pm-11:46 pm
2 stops8h 30m
Bismarck
Thu 11/12
5:50 am-9:47 am
1 stop5h 57m
$392
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Seattle to Bismarck
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Bismarck in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Bismarck flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Bismarck flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Bismarck flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Bismarck flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Bismarck flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Bismarck
Have a flexible travel schedule? Discover the best time to fly to Bismarck from Seattle with our price prediction graph.
SEA-BIS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Bismarck
Reviews of airlines servicing Bismarck
Get insights into the airlines that provide service to Bismarck. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bismarck. Reviews last updated September 23, 2026.
Get a feel of what it's like to fly with Delta and United Airlines from Seattle to Bismarck by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Bismarck. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Bismarck flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seattle
Popular flights
Alternative routes for Seattle to Bismarck
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Bismarck
Explore flights to Bismarck departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
Complete your trip
Complete your trip to Bismarck by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Bismarck by cabin class
Find flights from Seattle to Bismarck, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Bismarck flights
Browse other Seattle and Bismarck flight options. Last updated on September 23, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Seattle to Bismarck
Discover the top 2 airlines that operate flights from Seattle to Bismarck. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$294 | Average$502 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$343 | Average$468 | FlexibilityNo cancel fee | On-timeN/A |