$210 Cheap Delta flights Bismarck (BIS) to Seattle (SEA)

View $210 flight on Tue, Sep 9, 2025Opens in a new window

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$210 Cheap Delta flights Bismarck (BIS) to Seattle (SEA)

Prices were available within the past 7 days and start at $210 for one-way flights and $274 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Nov 24 - Tue, Dec 9
BIS
Bismarck
SEA
Seattle
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 24 from Bismarck to Seattle, returning Tue, Dec 9, priced at $274 found 1 day ago
Delta
Fri, Nov 21 - Wed, Dec 3
BIS
Bismarck
SEA
Seattle
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Nov 21 from Bismarck to Seattle, returning Wed, Dec 3, priced at $309 found 1 day ago
Delta
Mon, Aug 4 - Tue, Aug 26
BIS
Bismarck
SEA
Seattle
$314 Roundtrip, found 6 days ago
$314
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Aug 4 from Bismarck to Seattle, returning Tue, Aug 26, priced at $314 found 6 days ago
Delta
Sun, Aug 31 - Fri, Sep 19
BIS
Bismarck
SEA
Seattle
$327 Roundtrip, found 2 days ago
$327
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Aug 31 from Bismarck to Seattle, returning Fri, Sep 19, priced at $327 found 2 days ago
Delta
Mon, Aug 4 - Mon, Aug 25
BIS
Bismarck
SEA
Seattle
$329 Roundtrip, found 6 days ago
$329
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Aug 4 from Bismarck to Seattle, returning Mon, Aug 25, priced at $329 found 6 days ago
Delta
Tue, Sep 9 - Tue, Sep 23
BIS
Bismarck
SEA
Seattle
$331 Roundtrip, found 1 hour ago
$331
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Sep 9 from Bismarck to Seattle, returning Tue, Sep 23, priced at $331 found 1 hour ago
Flights from Bismarck (BIS) to Seattle (SEA)
Origin airport
Bismarck Municipal
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
American Airlines
Distance
1010 mi

Frequently asked questions

How much is a Delta Air Lines flight from Bismarck Municipal Airport (BIS) to Seattle - Tacoma Intl. Airport (SEA)?
You'll discover affordable return Delta Air Lines flights from $274 from BIS to SEA by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $210 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BIS to SEA with Delta Air Lines?
January is one of the most affordable months to get away to Seattle with Delta Air Lines. You could also find great deals on one-way and round-trip tickets in February.
What is the cheapest time to book flights from Bismarck Municipal Airport (BIS) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines?
For cheap Delta Air Lines fares from Bismarck Municipal Airport (BIS) to Seattle - Tacoma Intl. Airport (SEA), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the overall price. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Bismarck Municipal Airport (BIS) to Seattle - Tacoma Intl. Airport (SEA)?
Fill in your dates, hit search and select the "Nonstop" filter on Expedia to browse any direct flights from BIS to SEA with Delta Air Lines or another carrier.
What is the earliest Delta Air Lines flight from BIS to SEA?
Filter your results by "Morning" and "Early Morning" to see the earliest departures from BIS to SEA. Leaving early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Seattle?
Jump on a Delta Air Lines flight from Bismarck Municipal Airport (BIS) to Seattle, and you're most likely to land at Seattle - Tacoma Intl. Airport (SEA). This is the airline's main hub in this city.
Why fly with Delta Air Lines from BIS to SEA?
With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a favorite for many passengers heading from BIS to SEA. What's more, if you're a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which you can put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Bismarck Municipal Airport (BIS) to Seattle - Tacoma Intl. Airport (SEA)?
Changes are generally free within 24 hours of booking, but your airline may add a charge after that. For more details about altering your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your plans without being charged, tick the "No cancel fee" or "Changes included" filter when organizing your trip.
*Available to One Key members.